MMC2107 - Freescale Semiconductor

Freescale Semiconductor, Inc.
Electrical Specifications
QADC Electrical Characteristics
Table 22-8. QADC Conversion Specifications
(V DDH and V DDA = 5.0 Vdc ± 0.5 V, V DD = 2.7 to 3.6 V, V SS = V SSA = 0 Vdc,
V RH – V RL = 5 V ± 0.5 V, T A = T L to T H )
nc...
Freescale Semiconductor, I
No. Parameter Symbol Min Max Unit
1 QADC clock (QCLK) frequency (1) f QCLK 0.5 2.1 MHz
2 Conversion cycles CC 14 28
3
Conversion time, f QCLK = 2.0 MHz
Minimum = CCW/IST =%00
Maximum = CCW/IST =%11
QCLK
cycles
t CONV 7.0 14.0 µs
4 Stop mode recovery time t SR — 10 µs
5 Resolution (2) — 5 — mV
6
(3), (4), (5)
Absolute (total unadjusted) error
f QCLK = 2.0 MHz (2) , two clock input sample time
AE –2 2 Counts
7 Disruptive input injection current (6), (7), (8) I INJ
(9) –1 1 mA
8
9
Current coupling ratio (10)
PQA
PQB
K —
—
Incremental error due to injection current
All channels have same 10 kΩ < R S V SSA due to the presence of the
sample amplifier. Other channels are not affected by non-disruptive conditions.
7. Exceeding limit may cause conversion error on stressed channels and on unstressed channels. Transitions within the limit
do not affect device reliability or cause permanent damage.
8. Input must be current limited to the value specified. To determine the value of the required current-limiting resistor, calculate
resistance values using V POSCLAMP = V DDA + 0.5 V and V NEGCLAMP = – 0.3 V, then use the larger of the calculated values.
9. Condition applies to two adjacent pins.
10. Current coupling ratio, K, is defined as the ratio of the output current, I Out , measured on the pin under test to the injection
current, I INJ , when both adjacent pins are overstressed with the specified injection current. K = I Out / I INJ The input voltage
error on the channel under test is calculated as V ERR = I INJ x K x R S .
— Continued —
MMC2107 – Rev. 2.0
Technical Data
MOTOROLA Electrical Specifications 593
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