CA3094 - EBG - Darmstadt

April 1994
Features
SEMICONDUCTOR CA3094
• CA3094T, E, M for Operation Up to 24V
• CA3094AT, E, M for Operation Up to 36V
• CA3094BT, M for Operation Up to 44V
• Designed for Single or Dual Power Supply
• Programmable: Strobing, Gating, Squelching, AGC
Capabilities
• Can Deliver 3W (Average) or 10W (Peak) to External
Load (in Switching Mode)
• High Power, Single Ended Class A Amplifier will Deliver
Power Output of 0.6W (1.6W Device Dissipation)
• Total Harmonic Distortion (THD) at 0.6W in Class A
Operation 1.4% (Typ.)
Applications
• Error Signal Detector: Temperature Control with
Thermistor Sensor; Speed Control for Shunt Wound
DC Motor
• Over Current, Over Voltage, Over Temperature Protectors
• Dual Tracking Power Supply with CA3085
• Wide Frequency Range Oscillator
• Analog Timer
• Level Detector
• Alarm Systems
• Voltage Follower
• Ramp Voltage Generator
• High Power Comparator
• Ground Fault Interrupter (GFI) Circuits
Ordering Information
PART NUMBER
TEMPERATURE
RANGE PACKAGE
CA3094T, AT, BT -55 o C to +125 o C 8 Lead Metal Can
CA3094E, AE, BE -55 o C to +125 o C 8 Lead Plastic DIP
CA3094M, AM, BA -55 o C to +125 o C 8 Lead Plastic SOIC (N)
Pinouts
EXT. FREQUENCY
COMPENSATION
OR INHIBIT INPUT
DIFFERENTIAL
VOLTAGE INPUTS
GND (V- IN DUAL
SUPPLY OPERATION)
CA3094 (PDIP, SOIC)
TOP VIEW
NOTE: Pin 4 is connected to case
1
2
3
4
8
7
6
5
SINK OUTPUT
(COLLECTOR)
V+
DRIVE OUTPUT
(EMITTER)
I ABC CURRENT
PROGRAMMABLE
INPUT
(STROBE OR AGC)
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper I.C. Handling Procedures.
Copyright © Harris Corporation 1994
10-11
Programmable Power Switch/Amplifier for
Control and General Purpose Applications
Description
The CA3094 is a differential input power control switch/
amplifier with auxiliary circuit features for ease of programmability.
For example, an error or unbalance signal can be
amplified by the CA3094 to provide an on-off signal or
proportional control output signal up to 100mA. This signal is
sufficient to directly drive high current thyristors, relays, DC
loads, or power transistors. The CA3094 has the generic
characteristics of the CA3080 operational amplifier directly
coupled to an integral Darlington power transistor capable of
sinking or driving currents up to 100mA.
The gain of the differential input stage is proportional to the
amplifier bias current (I ABC ), permitting programmable
variation of the integrated circuit sensitivity with either digital
and/or analog programming signals. For example, at an I ABC
of 100μA, a 1mV change at the input will change the output
from 0 to 100μA (typical).
The CA3094 is intended for operation up to 24V and is
especially useful for timing circuits, in automotive equipment,
and in other applications where operation up to 24V is a
primary design requirement (see Figures 28, 29 and 30 in
Typical Applications text). The CA3094A and CA3094B are
like the CA3094 but are intended for operation up to 36V and
44V, respectively (single or dual supply).
These types are available in 8 lead TO-99 Metal Cans (“T”
suffix). Type CA3094 is also available in an 8 lead dual-inline
plastic DIP package (“E” suffix) and Small Outline Package
(“M” suffix).
EXT. FREQUENCY
COMPENSATION OR
INHIBIT INPUT
DIFFERENTIAL
VOLTAGE INPUTS
2
CA3094 (CAN)
TOP VIEW
1
3
SINK OUTPUT
(COLLECTOR)
8
4
GND (V- IN DUAL
SUPPLY OPERATION)
TAB
7
5
6
V+
DRIVE OUTPUT
(EMITTER)
IABC CURRENT
PROGRAMMABLE INPUT
(STROBE OR AGC)
File Number 598.3

Specifications CA3094, CA3094A, CA3094B
Absolute Maximum Ratings Thermal Information
Dual Supply Voltage
CA3094 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±12V
CA3094A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±18V
CA3094B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±22V
Single Supply Voltage
CA3094. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24V
CA3094A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36V
CA3094B. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44V
Differential Input Voltage (Term. 2 and 3) Note 1 . . . . . . . . . . . . . 5V
DC Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V+ to V-
Input Current (Term. 2 and 3). . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±1mA
Amplifier Bias Current (Term. 5) . . . . . . . . . . . . . . . . . . . . . . . . . 2mA
Average Output Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100mA
Peak Output Current. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300mA
10-12
Thermal Resistance θ JA θ JC
Plastic DIP Package . . . . . . . . . . . . . . . . 150 o C/W -
Plastic SOIC Package . . . . . . . . . . . . . . . 170 o C/W -
Metal Can . . . . . . . . . . . . . . . . . . . . . . . . 156 o C/W 68 o C/W
Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +175 o C
Junction Temperature (Plastic Package). . . . . . . . . . . . . . . . +150 o C
Lead Temperature (Soldering 10s) . . . . . . . . . . . . . . . . . . . . +300 o C
(SOIC - Lead Tips Only)
Operating Temperature Range . . . . . . . . . . . . . . . . -55 o C to +125 o C
Storage Temperature Range. . . . . . . . . . . . . . . . . . -65 o C to +150 o C
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation
of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
Electrical Specifications T A = +25 o C for Equipment Design. Single Supply V+ = 30V, Dual Supply V+ = 15V, V- = -15V, I ABC = 100μA
Unless Otherwise Specified
INPUT PARAMETERS
PARAMETERS SYMBOL TEST CONDITIONS MIN TYP MAX UNITS
Input Offset Voltage V IO T A = +25 o C - 0.4 5.0 mV
Input Offset Voltage Change |ΔV IO | Change in V IO between I ABC = 100μA
and I ABC = 5μA
T A = 0 o C to +70 o C - - 7.0 mV
- 1 8.0 mV
Input Offset Current I IO T A = +25 o C - 0.02 0.2 μA
T A = 0 o C to +70 o C - - 0.3 μA
Input Bias Current I I T A = +25 o C - 0.2 0.50 μA
T A = 0 o C to +70 o C - - 0.70 μA
Device Dissipation P D I OUT = 0mA 8 10 12 mW
Common Mode Rejection Ratio CMRR 70 110 - dB
Common Mode Input Voltage Range V ICR V+ = 30V (High) 27 28.8 - V
V- = 0V (Low) 1.0 0.5 - V
V+ = 15V 12 13.8 - V
V- = -15V -14 -14.5 - V
Unity Gain Bandwidth f T I C = 7.5mA, V CE = 15V, I ABC = 500μA - 30 - MHz
Open Loop Bandwidth at -3dB Point BW OL I C = 7.5mA, V CE = 15V, I ABC = 500μA - 4 - kHz
Total Harmonic Distortion
(Class A Operation)
Amplifier Bias Voltage
(Terminal 5 to Terminal 4)
Input Offset Voltage Temperature
Coefficient
THD P D = 220mW - 0.4 - %
P D = 600mW - 1.4 - %
V ABC - 0.68 - V
ΔV IO /ΔT - 4 - μV/ o C
Power Supply Rejection ΔV IO /ΔV - 15 150 μV/V
1/F Noise Voltage EN f = 10Hz, IABC = 50μA - 18 - nV⁄ Hz
1/F Noise Current IN f = 10Hz, IABC = 50μA - 1.8 - pA⁄ Hz
Differential Input Resistance RI IABC = 20μA 0.50 1.0 - MΩ
Differential Input Capacitance C I f = 1MHz, V+ = 30V - 2.6 - pF
OUTPUT PARAMETERS (Differential Input Voltage = 1V)

Peak Output Voltage
(Terminal 6)
Peak Output Voltage
(Terminal 6)
Peak Output Voltage
(Terminal 8)
Peak Output Voltage
(Terminal 8)
Collector-to-Emitter Saturation Voltage
(Terminal 8)
Output Leakage Current
(Terminal 6 to Terminal 4)
Specifications CA3094, CA3094A, CA3094B
Electrical Specifications T A = +25 o C for Equipment Design. Single Supply V+ = 30V, Dual Supply V+ = 15V, V- = -15V, I ABC = 100μA
Unless Otherwise Specified (Continued)
Composite Small Signal Current Transfer
Ratio (Beta) (Q12 and Q13)
With Q13 “ON” V+OM V+ = 30V, R L = 2kΩ to GND 26 27 - V
With Q13 “OFF” V-OM - 0.01 0.05 V
Positive V+OM V+ = 15V, V- = -15V, R L = 2kΩ to -15V 11 12 - V
Negative V-OM - -14.99 -14.95 V
With Q13 “OFF” V+OM V+ = 30V, R L = 2kΩ to 30V 29.95 29.99 - V
With Q13 “ON” V-OM - 0.040 - V
Positive V+OM V+ = 15V, V- = -15V,
14.95 14.99 - V
Negative V-OM
RL = 2kΩ to 15V
- -14.96 - V
V CE(SAT)
V+ = 30V, I C = 50mA, Terminal 6
Grounded
10-13
- 0.17 0.80 V
V+ = 30V - 2 10 μA
h FE V+ = 30V, V CE = 5V, I C = 50mA 16,000 100,000 -
Output Capacitance Terminal 6 CO f = 1MHz, All remaining Terminals Tied - 5.5 - pF
Terminal 8
to Terminal 4
- 17 - pF
TRANSFER PARAMETERS
Voltage Gain A V+ = 30V, I ABC = 100μA, ΔV OUT = 20V,
R L = 2kΩ
Forward Transconductance to
Terminal 1
Slew Rate (Open
Loop)
PARAMETERS SYMBOL TEST CONDITIONS MIN TYP MAX UNITS
20,000 100,000 - V/V
86 100 - dB
g M 1650 2200 2750 μmhos
Positive Slope SR I ABC = 500μA, R L = 2kΩ - 500 - V/μs
Negative Slope - 50 - V/μs
Unity Gain (Non-Inverting Compensated) I ABC = 500μA, R L = 2kΩ - 0.70 - V/μs
NOTE:
1. Exceeding this voltage rating will not damage the device unless the peak input signal current (1mA) is also exceeded.
Schematic Diagram
DIFFERENTIAL
VOLTAGE 2
INPUT
DIFFERENTIAL
VOLTAGE
INPUT
AMPLIFIER
BIAS INPUT
I ABC
Q4
3
Q1
D2
Q2
Q5
D3
5 Q3
D1
EXTERNAL FREQUENCY
COMPENSATION OR INHIBIT INPUT
Q7
Q6
D4
Q11
Q9
D5
Q8
Q10
1
R2 47kΩ
D6
4
7
V-
R 1
2kΩ
Q12
V+
8
“SINK”
OUTPUT
Q13
6
“SOURCE”
(DRIVE)
OUTPUT
OUTPUT
MODE
OUTPUT
TERM
INV
INPUTS
NON-
INV
“Source” 6 2 3
“Sink” 8 3 2

Typical Performance Curves
INPUT OFFSET VOLTAGE (mV)
5
4
3
2
V+ = +15V, V- = -15V
1
0
-1
-2
-3
-4
-5
-6
-7
+125
-8
0.1 1 10 100 1000
o +90
C
o +70
C
o C
-55 o +25
C
o +70
C
o +90
C
o +125
C
oC -55 o +25
C
o C
AMPLIFIER BIAS CURRENT (μA)
FIGURE 1. INPUT OFFSET VOLTAGE vs AMPLIFIER BIAS
CURRENT (I ABC , TERMINAL 5)
INPUT BIAS CURRENT (nA)
0.1
0.1 0.88μA 1 10 100 1000
AMPLIFIER BIAS CURRENT (μA)
FIGURE 3. INPUT BIAS CURRENT vs AMPLIFIER BIAS CUR-
RENT (I ABC , TERMINAL 5)
AMPLIFIER SUPPLY CURRENT (μA)
10 4
10 3
10 2
10 1
3
1.0
10 4
10 3
10 2
10 1
1.0
V+ = +15V, V- = -15V
V+ = +15V, V- = -15V
+125 o C
+25 o C
-55 o C
FIGURE 5. AMPLIFIER SUPPLY CURRENT vs AMPLIFIER
BIAS CURRENT (I ABC , TERMINAL 5)
CA3094, CA3094A, CA3094B
+125 o C
+25 o C
-55 o C
T A = +125 o C
+25 o C
-55 o C
0.1
0.1 1.0 10 100 1000
AMPLIFIER BIAS CURRENT (μA)
10-14
INPUT OFFSET CURRENT (nA)
10 3
10 2
10 1
1
0.1
V+ = +15V, V- = -15V
+125o +25
C
o -55
C
o C
0.01
0.1 1.0 10 100 1000
AMPLIFIER BIAS CURRENT (μA)
FIGURE 2. INPUT OFFSET CURRENT vs AMPLIFIER BIAS
CURRENT (I ABC , TERMINAL 5)
DEVICE DISSIPATION (μW)
10 5
10 4
10 3
10 2
10 1
T A = +25 o C
V+ = +15V, V- = -15V
V+ = +6V, V- = -6V
V+ = +3V, V- = -3V
1
0.1 1.0 10 100 1000
AMPLIFIER BIAS CURRENT (μA)
FIGURE 4. DEVICE DISSIPATION vs AMPLIFIER BIAS CUR-
RENT (I ABC , TERMINAL 5)
COMMON MODE INPUT VOLTAGE (V)
15.0
14.5
14.0
13.5
13.0
0
-13.0
-13.5
-14.0
-14.5
V+ = +15V, V- = -15V
T A = +25 o C
V+ CMR
V- CMR
-15.0
0.1 1.0 10 100 1000
AMPLIFIER BIAS CURRENT (μA)
FIGURE 6. COMMON MODE INPUT VOLTAGE vs AMPLIFIER
BIAS CURRENT (I ABC , TERMINAL 5)

Typical Performance Curves (Continued)
1/F NOISE VOLTAGE (nV/√Hz)
COLLECTOR-TO-EMITTER
SATURATION VOLTAGE (mV)
OPEN LOOP VOLTAGE GAIN (dB)
50
45
40
35
30
25
20
15
10 1
10
V+ = +15V, V- = -15V
RS = 0Ω, TA = +25oC FOR TEST CIRCUIT, SEE FIGURE 20
50μA
500μA
I ABC = 5μA
10
FREQUENCY (Hz)
2
CA3094, CA3094A, CA3094B
FIGURE 7. 1/F NOISE VOLTAGE vs FREQUENCY FIGURE 8. 1/F NOISE CURRENT vs FREQUENCY
10000
1000
100
FORCED BETA = 10
T A = +25 o C
FIGURE 9. COLLECTOR EMITTER SATURATION VOLTAGE vs
COLLECTOR CURRENT OF OUTPUT TRANSISTOR
(Q13)
110
100
90
80
70
60
50
40
30
20
10
0
10 3
10
1 10 100 1000
COLLECTOR CURRENT (mA)
5μA
50μA
PHASE ANGLE
(I ABC = 500μA)
I ABC = 500μA
V+ = +15V, V- = -15V, R L = 2kΩ
(TERMINAL 6 TO V-), T A = +25 o C
FOR TEST CIRCUIT, SEE FIGURE 21
-10
10
FREQUENCY (Hz)
2
10 3
10 1
1 10 4
10 5
10 6
10 7
0
-50
-100
-150
-200
PHASE ANGLE (DEGREES)
10-15
V+ = +15V, V- = -15V
RS = 1MΩ, TA = +25o 100
C
FOR TEST CIRCUIT, SEE FIGURE 20
FIGURE 10. COMPOSITE DC BETA vs COLLECTOR CURRENT
OF DARLINGTON CONNECTED OUTPUT TRAN-
SISTORS (Q12, Q13)
FIGURE 11. OPEN LOOP VOLTAGE GAIN vs FREQUENCY FIGURE 12. FORWARD TRANSCONDUCTANCE vs AMPLIFIER
BIAS CURRENT
1/F NOISE VOLTAGE (pA/√Hz)
COMPOSITE DC BETA (Q12, Q13)
FORWARD TRANSCONDUCTANCE (μmho)
10
1.0
5μA
I ABC = 500μA
50μA
10
FREQUENCY (Hz)
1 102 103 0.1
1000
100
10 4
10
V+ = 20V, V CE = 10V
T A = +25 o C
1
1 10 100 1000
COLLECTOR CURRENT (mA)
105 V+ = +15V, V- = -15V
10 3
10 2
10 1
+125 o +25
C
o -55
C
o C
1
0.1 1.0 10 100 1000
AMPLIFIER BIAS CURRENT (μA)

Typical Performance Curves (Continued)
SLEW RATE (V/μs)
100
10
1.0
V+ = +15V, V- = -15V, T A = +25 o C
FOR TEST CIRCUIT, SEE FIGURE 22
0.1
1 10 100 1000
AMPLIFIER BIAS CURRENT (μA)
CA3094, CA3094A, CA3094B
FIGURE 13. SLEW RATE vs AMPLIFIER BIAS CURRENT FIGURE 14. SLEW RATE vs CLOSED LOOP VOLTAGE GAIN
PHASE COMPENSATION CAPACITANCE (pF)
1000
100
80
60
40
10
8
6
FIGURE 15. PHASE COMPENSATION CAPACITANCE AND RESISTANCE vs CLOSED LOOP VOLTAGE GAIN
Operating Considerations
The “Sink” Output (Terminal 8) and the “Drive” Output
(Terminal 6) of the CA3094 are not inherently current (or
power) limited. Therefore, if a load is connected between
Terminal 6 and Terminal 4 (V- or Ground), it is important to
connect a current limiting resistor between Terminal 8 and
Terminal 7 (V+) to protect transistor Q13 under shorted load
conditions. Similarly, if a load is connected between Terminal
8 and Terminal 7 (V+), the current limiting resistor should be
connected between Terminal 6 and Terminal 4 or ground. In
circuit applications where the emitter of the output transistor
is not connected to the most negative potential in the
system, it is recommended that a 100Ω current limiting
resistor be inserted between Terminal 7 and the V+ supply.
20
4
2
R C
10-16
SLEW RATE (V/μs)
100
1
0 10 20 30 40 50 60 70
CLOSED LOOP VOLTAGE GAIN (dB)
10
1.0
V+ = +15V, V- = -15V, I ABC = 500mA, T A = +25 o C
100mV OUTPUT SIGNAL WITH
10% OVERSHOOT
FOR PHASE COMPENSATION
TEST CIRCUIT, SEE FIGURE 24
V+ = +15V, V- = -15V, I ABC = 500μA, T A = +25 o C
FOR TEST CIRCUIT, SEE FIGURE 23
0.1
0 20 40 60 80 100
CLOSED LOOP VOLTAGE GAIN (dB)
C C
Test Circuits
1000
800
600
400
200
PHASE COMPENSATION RESISTANCE (Ω)
1/F Noise Measurement Circuit
When using the CA3094, A, or B audio amplifier circuits, it is
frequently necessary to consider the noise performance of
the device. Noise measurements are made in the circuit
shown in Figure 20. This circuit is a 30dB, non-inverting
amplifier with emitter follower output and phase compensation
from Terminal 2 to ground. Source resistors (R S ) are set
to 0Ω or 1MΩ for E noise and I noise measurements,
respectively. These measurements are made at frequencies
of 10Hz, 100Hz and 1kHz with a 1Hz measurement bandwidth.
Typical values for 1/f noise at 10Hz and 50μA I ABC are
E = 18nV ⁄ Hz and I =
1.8pA ⁄ Hz .
N
N

Test Circuits
100Ω
15V
100Ω
15V
2
3
2
1MΩ
NOTES:
1. PDISSIPATION = (V+)(I)
V CMR
3
4
8
1
1kΩ
100pF
CA3094, CA3094A, CA3094B
30V NOTES:
1. Input Offset Voltage: V
IO
=
E
OUT
--------------
100
.
7
5
300kΩ
9.9kΩ
2. For Power Supply Rejection Test: (1) vary V+ by -2V; then (2)
vary V- by +2V.
3. Equations:
CA3094
6
(1) V+ Rejection =
E OUT – E OUT
0 1
-------------------------------------------
200
10kΩ
E OUT
30V
† Maximum Reading of Step 1 or Step 2
FIGURE 16. INPUT OFFSET VOLTAGE AND POWER SUPPLY REJECTION TEST CIRCUIT
7
CA3094
4
5
1
30V
R ABC
8
220Ω
0.001μF
6
150kΩ
1MΩ
E OUT
2.
E
OUT
I
OS
106VOLTS = ---------------------------
------------------
AMPS
FIGURE 17. INPUT OFFSET CURRENT TEST CIRCUIT FIGURE 18. INPUT BIAS CURRENT TEST CIRCUIT
100Ω
100Ω
0.8V TO 27.2V
15V
2
3
9.9kΩ
200Ω
30V
-
+
CA3094
1
4.7kΩ
7
1kΩ
100pF
8
4
6
10kΩ
10kΩ
E OUT
FIGURE 19. COMMON MODE RANGE AND REJECTION RATIO TEST CIRCUIT
10-17
E OUT – E OUT
0 2
(2) V- Rejection = -------------------------------------------
200
1
4. Power Supply Rejection: ( dB)
= 20log-------------------------------------.
V
REJECTION†
15V
NOTE: I I
=
I
2 --
2
3
-
7
CA3094A
NOTES:
1. CMRR = 100 × 26V
-------------------------------------------
E – E
2OUT 1OUT
.
+
4
5
30V
300kΩ
2. Input Voltage Range for CMRR = 1V to 27V.
3. CMRR (dB) = 20log 100 × 26V
------------------------------------------- .
E – E
2OUT 1OUT

Test Circuits (Continued)
2V
0V
120Ω
I ABC
(μA)
3.6kΩ
R S †
R S *
2
3
C COMP
(pF)
5 0
50 50
500 500
I ABC
-
+
5
CA3094A
1
C C
7
4
+15V
8
6
-15V
500Ω
3kΩ
CA3094, CA3094A, CA3094B
OUTPUT
(RMS)
NOTES:
1. RS † = 1MΩ
(1/F Noise Current Test)
2. RS = 0Ω
(1/F Noise Voltage Test)
FIGURE 20. 1/F NOISE TEST CIRCUIT FIGURE 21. OPEN LOOP GAIN vs FREQUENCY TEST CIRCUIT
+15V
-15V
2
13kΩ
3
15kΩ
I ABC
-
CA3094A
+
5
7
4
8
6
2kΩ
E OUT
FIGURE 22. OPEN LOOP SLEW RATE vs I ABC TEST CIRCUIT FIGURE 23. SLEW RATE vs NON-INVERTING UNITY GAIN TEST
CIRCUIT
10-18
±10V
91Ω
-15V 10kΩ +15V RS
10kΩ
100Ω 10Ω
10kΩ
2
10Ω
3
R S
(Ω)
I ABC
-
+
5
CA3094A
4
I ABC
(μA)
56K 500
560K 50
56M 5
56kΩ
2
3
220Ω
0.001μF
+15V
-
+
5
CA3094A
1
7
4
7
-15V
8
+15V
8
6
-15V
R L = 2kΩ
6
2kΩ
10kΩ
OUTPUT
E OUT

Test Circuits (Continued)
51Ω
R 2
R 1
Typical Applications
For additional application information, refer to
Application Note AN6048, “Some Applications of a
Programmable Power/Switch Amplifier IC” and AN6077
“An IC Operational Transconductance Amplifier (OTA)
with Power Capability”.
Design Considerations
2
3
CLOSED
LOOP GAIN
(dB)
56kΩ
R C
-
+
5
CA3094A
1
C C
R 1
(kΩ)
The selection of the optimum amplifier bias current (I ABC )
depends on:
1. The Desired Sensitivity - The higher the IABC , the higher
the sensitivity, i.e., a greater drive current capability at the
output for a specific voltage change at the input.
2. Required Input Resistance - The lower the IABC , the higher
the input resistance.
7
4
+15V
8
6
-15V
2kΩ
R 2
(kΩ)
CA3094, CA3094A, CA3094B
R 3
R 3
(kΩ)
0 10 ∞ 10
20 10 1 10
40 1 0.1 10
OUTPUT
FIGURE 24. PHASE COMPENSATION TEST CIRCUIT FIGURE 25. PRESETTABLE ANALOG TIMER
10-19
120VAC
V+ = 30V
R 5
R6 (NOTE 2)
R 7
COMMON
S 1
D 1
C 1
NOTES:
1. C1 = 0.5μF
D1 = 1N914
R1 = 0.51MΩ = 3 min.
R2 = 5.1MΩ = 30 min.
R3 = 22MΩ = 2 hrs.
R4 = 44MΩ = 4 hrs.
R5 = 1.5kΩ
R6 = 50kΩ
R7 = 5.1kΩ
R8 = 1.5kΩ
3
2
+
7
CA3094A
-
4
If the desired sensitivity and required input resistance are
not known and are to be experimentally determined, or the
anticipated equipment design is sufficiently flexible to
tolerate a wide range of these parameters, it is
recommended that the equipment designer begin his
calculations with an I ABC of 100μA, since the CA3094 is
characterized at this value of amplifier bias current.
The CA3094 is extremely versatile and can be used in a
wide variety of applications.
8
5
6
S 2
R 8
R LOAD
R 1
R 2
R 3
R 4
E OUT
MT 2
MT 1
29V 3V
0
27V
0
Time = 1 hr.
S2 Set to R4 2. Potentiometer required for initial time set to permit device interconnecting.
Time variation with temperature < 0.3%/ o C.
3
6
S 1

Typical Applications
E IN
Z 1
-
+
CA3094
Z 2
CA3094, CA3094A, CA3094B
E OUT
(NOTE 1)
NOTE: 1. In single-ended output operation, the CA3094 may require a pull up or pull down resistor
FIGURE 26. APPLICATION OF THE CA3094: (a) AS AN INVERTING OP AMP AND (b) IN A NON-INVERTING MODE, AS A FOLLOWER
FIGURE 27. RC TIMER
FIGURE 28. RC TIMER TRIGGERED BY EXTERNAL NEGATIVE PULSE
10-20
E IN
Where E OUT = E IN
+
CA3094
-
E
OUT ⎛ Z
2 ⎞
Where -------------- = f ⎜----- ⎟ depends on the characteristics of Z1 and Z2
E Z
IN ⎝ 1 ⎠
FIGURE 26A. FIGURE 26B.
VOLTAGE A
2/3V+
0
+18
0
VOLTAGE AT
TERMINAL 8
INPUT A
V+
12VDC
V+ = 18V
0.01μF
S 1
C
A
100
kΩ
B
100
kΩ
1N914
100
kΩ
R
I I
1N914
12V
R 1
100kΩ
2
3
R 2
220kΩ
R ABC
220kΩ
+
-
5
CA3094
TIME DELAY (SEC.) = RC (APPROX.)
270
kΩ
C
100
kΩ
R 1
1MΩ
D
R2 2.2MΩ
3
2
R 3
1MΩ
+
-
7
4
8
7
CA3094
4
6
5
8
220kΩ
2kΩ
PULL UP
E OUT
6
E OUT
(NOTE 1)
Problem: To calculate the maximum value of R required to
switch a 100mA output current comparator
Given:
II = 500nA at IABC = 100μA (from Figure 3)
II = 5μA can be determined by drawing a line on Figure 3 through
IABC = 100μA and IB = 500nA parallel to the typical TA = +25o I = 5μA, R 3.6MΩ
ABC ABC
C
curve.
Then: II = 33nA at IABC = 5μA
18V
= ≈ ---------
5μA
C 1
0.5μF
E
18V – 12V
R = ------------------------ = 180MΩ at T = +25°C
MAX 33nA
A
R = 180MΩ × 2⁄ 3† = 120MΩ at T =
MAX
A
– 55°C
† Ratio of I I at T A = +25 o C to I I at T A = -55 o C for any given
value of I ABC
E OUT
R LOAD
2kΩ
A
B
C
D
E
V+
0
0
0
0
V+
0
3 /4 V+
On a negative going transient at input (A), a negative
pulse at C will turn “on” the CA3094, and the output (E)
will go from a low to a high level.
At the end of the time constant determined by C1, R1,
R2, R3, the CA3094 will return to the “off” state and
the output will be pulled low by R LOAD . This condition
will be independent of the interval when input (A)
returns to a high level.

Typical Applications (Continued)
+
-
5VDC
E OUT
LINE
27kΩ
50kΩ
27kΩ
2.7MΩ
330kΩ
C
2ms
120s
3
2
C 1
0.01μF
PAPER OR
MYLAR
-
+
7
CA3094
4
5
R
6
8
CA3094, CA3094A, CA3094B
10kΩ MIN
1MΩ MAX
TYPE
1N914
NOTES:
1. R = 1MΩ, C = 1μF
2. Time Constant: t ≈ RC x 120
3. Pulse Width: ω≈ K(C1 /C)
510Ω
E OUT
FIGURE 29. FREE RUNNING PULSE GENERATOR FIGURE 30. CURRENT OR VOLTAGE CONTROLLED OSCILLATOR
R P
100kΩ
C
R
100kΩ
2
3
560pF
300kΩ
+
-
5
CA3094A
4
7
6
30V
8
FIGURE 31. SINGLE SUPPLY ASTABLE MULTIVIBRATOR FIGURE 32. DUAL SUPPLY ASTABLE MULTIVIBRATOR
Mylar is a trademark of E.I. Dupont de Nemours.
510Ω
LED
10-21
47kΩ
47kΩ
20kΩ
1N914
100kΩ
C
2
3
CURRENT INPUT
VOLTAGE INPUT
R 2
51kΩ
R1 4.3kΩ
+
-
CA3094
5
7
OR R
R
100kΩ
2
3
C 1000pF
4
300kΩ
1
NOTE: f = -------------------------------------------
OUT ⎛ 2R
1 ⎞
2RC ln⎜---------
+ 1⎟
⎝ R
2 ⎠
If: R2 = 3.08R1 , f =
OUT
+
-
5
8
1kΩ
6
CA3094A
4
1
-------
RC
7
6
-15V
OUTPUT
8
15V
1kΩ
+15V
OUTPUT
fOUT ≈ 5kHz

Typical Applications (Continued)
INPUT
2.
R 1
100kΩ
R†
51kΩ
NOTES:
R R
1 2
1. R† = -------------------
R + R
1 2
117V
60Hz
3
2
300kΩ
R 2
100kΩ
± Threshold = [ ± Supply]
-
+
5
CA3094A
4
7
6
8
R
1
-------------------
R + R
1 2
CA3094, CA3094A, CA3094B
-15V
2kΩ
+15V
OUTPUT
FIGURE 33. COMPARATORS (THRESHOLD DETECTORS) DUAL AND SINGLE SUPPLY TYPES
FIGURE 34. TEMPERATURE CONTROLLER
10-22
INPUT
NOTES:
1.
2.
51kΩ
R A
200kΩ
150kΩ
3
2
R B
200kΩ
R 1
100kΩ
Upper Threshold = [ V+ ]
Lower Threshold = [ V+ ]
-
+
5
CA3094
4
7
6
8
R
B
----------------------------------------
⎛ R R
1 A ⎞
⎜------------------- ⎟ + RB
⎝ R + R
1 A⎠
R R
1 B
-------------------
R + R
1 B
----------------------------------------
⎛ R R
1 B ⎞
⎜------------------- ⎟ + RA
⎝ R + R
1 B ⎠
FIGURE 33A. DUAL SUPPLY FIGURE 33B. SINGLE SUPPLY
TYPE
D1201F
10Ω
26V
60Hz
+
-
50μF
50V
PTC TEMP.
SENSOR
75kΩ
R
75kΩ
68kΩ
10kΩ
TEMP.
SET
75kΩ
FOR NTC SENSOR, INTERCHANGE POSITION OF SENSOR AND R
.
1N914
2
3
1.5MΩ 1N914
330kΩ
7
5
CA3094
4
8
1.5kΩ
6
NOTE: All Resistors are 1/2W.
G
2kΩ
HEATER
MT 2
MT 1
V+
+15V
OUTPUT
1kΩ
0.01μF

Typical Applications (Continued)
V+ INPUT
(NOTE 1)
V- INPUT
(NOTE 2)
2
3
0.0056μF
5.1kΩ
RTRIP 200mV
RANGE
R
47kΩ
(NOTE 3)
L C
0.02μF
C2 0.1μF
(NOTE 4)
47kΩ
100Ω
2
3
1mA
CA3085A
VOLTAGE REG.
33kΩ
+3V
200
Ω
3.3
kΩ
4 6 7
REF.
1.6V
200kΩ
+
-
1
5
CA3094A
4
10kΩ
±1%
3
100kΩ
2
0.01μF
I ABC
10μA
3.3MΩ
-
+
6
1kW
10kΩ
1.5kΩ
7
8
10kΩ
±1%
5
1
8
CA3094B
4
CA3094, CA3094A, CA3094B
NOTE 3
R
5kΩ
5.6Ω
0.03μF
+15V REG.
OUTPUT
COMMON
RETURN
-15V REG.
OUTPUT
FIGURE 35. DUAL VOLTAGE TRACKING REGULATOR
7
6
36V
I A
20μA
100Ω
0.001mF
8
I LOAD
CIRCUIT
BREAKER
CONTROL
SOLENOID
FIGURE 36. GROUND FAULT INTERRUPTER (GFI) AND WAVEFORMS PERTINENT TO GROUND FAULT DETECTOR
10-23
NOTES:
1. V+ Input Range = 19V to 30V for 15V output.
2. V- Input Range = -16V to -30V for -15V output.
3. Max IOUT = ±100mA.
4. Regulation:
ΔV
OUT
Max Line = --------------------------------------------------------- × 100 = 0.075% ⁄ V
[ V ( Initial)
] ΔV
OUT IN
VOLTS 3
ΔV
OUT
Max. Load = ------------------------------------ × 100 = 0.075% V
V ( Initial)
OUT
OUT
(IL from 1mA to 50mA)
60mV
TYPICAL
CIRCUIT TRIPS ON POSITIVE
PEAKS WILL SWITCH WITHIN
1.5 CYCLES
GROUND FAULT
SIGNAL 60Hz
t
VOLTAGE BETWEEN
TERMINALS 2 AND 4
VOLTAGE BETWEEN
TERMINALS 3 AND 4
(ADJUSTABLE WITH
RTRIP) NOTES:
1. Differential current sensor provides 60mV signal ≈ 5mA of unbalance
(Trip) current.
2. All Resistors are 1/2 Watt, ±10%.
3. RC selected for 3dB point at 200Hz.
4. C2 = AC by-pass.
5. Offset adj. included in RTRIP .
6. Input impedance from 2 to 3 = 800kΩ.
7. With no input signal Terminal 8 (output) at 36V.

Typical Applications (Continued)
“BOOST”
(CW) 15kΩ
0.12μF
1800Ω
68Ω
INPUT
25μF
+
0.001μF
C 1
TREBLE
0.001μF
R 1
0.2μF
1kΩ
“CUT”
(CCW)
VOLUME
2
3
0.01μF
5600Ω
5μF
+
680
kΩ
CA3094, CA3094A, CA3094B
TYPICAL PERFORMANCE DATA FOR 12W AUDIO AMPLIFIER CIRCUIT
Power Output (8Ω load, Tone Control set at “Flat”)
Music (at 5% THD, regulated supply) . . . . . . . . . . . . . . . . . . . 15W
Continuous (at 0.2% IMD, 60Hz and 2kHz
mixed in a 4:1 ratio, unregulated supply)
See Figure 8 in AN6048 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12W
Total Harmonic Distortion
At 1W, unregulated supply . . . . . . . . . . . . . . . . . . . . . . . . . 0.05%
At 12W, unregulated supply . . . . . . . . . . . . . . . . . . . . . . . . 0.57%
+
5
7
CA3094B
“BOOST” 100kΩ “CUT”
(CW)
(CCW)
BASS
-
4
820Ω
0.47
μF
0.02μF
1
10kΩ
6
6.8pF
1Ω
8
8 LEAD
TO-5
220Ω
1W
220Ω
1W
30Ω†
27Ω
15μF
+
Q2 2N6292
10-24
Voltage Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40dB
Hum and Noise (below continuous power output) . . . . . . . . . . 83dB
Input Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250kΩ
Tone Control Range . . . . . . . . . . . . . . . . . . See Figure 9 in AN6048
FIGURE 37. 12W AUDIO AMPLIFIER CIRCUIT FEATURING TRUE COMPLEMENTARY SYMMETRY OUTPUT STAGE WITH CA3094
IN DRIVER STAGE
Q 1
Q 3
THERMAL
COMPENSATION
NETWORK†
C 2
0.47μF
JUMPER
+
2N6292
0.47Ω
0.47Ω
2N6107
4700μF
+
D1 - D4 1N5391
4700
μF
330Ω
47Ω
V+
V-
D 1
D 2
D 3
D 4
3μH
22Ω
R 2
1.8MΩ
R L
8Ω
120V
60Hz
STANCOR
NO. P-8609
OR EQUIVALENT
(120VAC TO
26.8VCT AT 1A)
†OPTIONAL THERMAL
COMPENSATION
NETWORK
8.2Ω
1N5391