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Analog Product Guide (PDF) - Powel.ru

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Precision Sensing Applications<br />

Bridge Sensors — Pressure, Load, Force<br />

Photoconductive/Photovoltaic<br />

C F<br />

10 V<br />

RG<br />

10 V<br />

+<br />

AMP<br />

-<br />

RF<br />

RF<br />

R A<br />

RB<br />

10 V<br />

-<br />

AMP<br />

+<br />

5V<br />

ADC121S101<br />

VA<br />

CSB<br />

ADC<br />

GND SDATA<br />

VIN<br />

SCLK<br />

5V<br />

2.5V<br />

is biased, provides C D C CM AMP<br />

R F<br />

D PHOTO<br />

Photoconductive diode<br />

faster response<br />

-<br />

+<br />

5V<br />

ADC<br />

CS<br />

SCLK<br />

D OUT<br />

Pressure<br />

Sensor<br />

10 V<br />

-<br />

AMP<br />

+<br />

R A<br />

RB<br />

C F<br />

R F<br />

5V<br />

Photovoltaic more<br />

linear, no leakage<br />

current. Generates<br />

voltage proportional<br />

to light<br />

I IN<br />

C CM<br />

C D<br />

-<br />

AMP<br />

+<br />

ADC<br />

CS<br />

SCLK<br />

DOUT<br />

Solutions Examples Pages<br />

Op amp LMP7704/ 09 43<br />

Single ended input SPI ADC ADC101Sxx1, ADC101C02x 25, 24<br />

Power LM2267x, LM500x, LM284x 114, 118<br />

Solutions Examples Pages<br />

Op amp LMP7701, LMV851, LMP7715, LMV841 44, 46<br />

Single-ended input SPI ADC ADC121Sxx1, ADC121C02x 25, 24<br />

Power LM500x, LM284x 118<br />

Reference LM4132, LM4140 144<br />

Temperature-Thermacouple Interface<br />

Temperature-RTD<br />

Type K<br />

Thermocouple<br />

Temp Sensor<br />

1<br />

5<br />

T CJR<br />

+V<br />

4<br />

Cold Junction<br />

Temperature<br />

V DD<br />

3 V OUT<br />

2<br />

Cold Junction<br />

Reference<br />

Copper<br />

Copper<br />

5K<br />

5K<br />

Av = 200<br />

Full Scale ~ 500 o C<br />

1M<br />

2<br />

3<br />

1M<br />

+V<br />

180Ω<br />

+5<br />

- 7<br />

6<br />

180 Ω<br />

AMP<br />

Amplified<br />

+ 4 Thermocouple<br />

Output<br />

3<br />

470 pF<br />

4<br />

3 REF 6<br />

1,2 7,8<br />

3<br />

470 pF<br />

ADC<br />

1<br />

100 nF<br />

1<br />

4<br />

6<br />

ADC<br />

5<br />

2<br />

2<br />

4<br />

6<br />

5<br />

4.096 V<br />

SCLK<br />

/CS<br />

SDATA<br />

To<br />

μP<br />

SCLK<br />

/CS<br />

SDATA<br />

RTD<br />

5 +<br />

3<br />

1<br />

AMP<br />

4<br />

2<br />

-<br />

R8<br />

2.5K<br />

+V<br />

4<br />

5<br />

Reference<br />

2 +V<br />

3 + 5<br />

AMP 1<br />

4<br />

-<br />

2<br />

+V<br />

3 + 5<br />

AMP<br />

1<br />

4<br />

- 2<br />

R2<br />

10K<br />

R5<br />

10K<br />

R7<br />

3.04K<br />

R6<br />

10K<br />

R4<br />

10K<br />

Av = (1+2R5/R7)(R1/R2)<br />

R1<br />

10K<br />

R3<br />

10K<br />

+V<br />

3 + 5<br />

AMP<br />

4<br />

- 2<br />

1<br />

1 μF<br />

ADC<br />

VA<br />

2 kΩ<br />

LM4040-2.5<br />

Solutions Examples Pages<br />

Op amp LMP7701, LMP7715 44<br />

Single-ended input SPI ADC ADC121x021 24, 25<br />

Temp Sensor LM94022 57<br />

Reference LM4140 144<br />

Solutions Examples Pages<br />

Op amp LMP7704, LMP7716, LMP7731 44, 51<br />

Differential-Input SPI ADC ADC121Sxx5, ADC141626 26<br />

Reference LM4132, LM4040 144<br />

Power LM284x, LM500x 118<br />

6

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