TC911A Ver la hoja de datos (PDF) - TelCom Semiconductor Inc => Microchip

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Fabricante

TC911A

AUTO-ZEROED OPERATIONAL AMPLIFIERS

TelCom Semiconductor Inc => Microchip 

AUTO-ZEROED MONOLITHIC

OPERATIONAL AMPLIFIERS

1

TC911A

TC911B

TYPICAL APPLICATIONS

10-Volt Precision Reference

2

Thermometer Circuit

+9V

18 kΩ

+15V

TC911

3+ 7

6

2–

4

6.4V

0.1 µF

VOUT = 10V

TEMP

OUT

REF02

ADJ

VREF

R1

TC911

R2

–

+

3

VOUT

3.6 kΩ

6.4 kΩ

R3

4

[ ( )] [ ] VOUT = VTEMP

1 + R2

R3 + R1

R3X R1

–

VREF

R2

R1

[ ( )] d VOUT =

dT

1 + R2

R +R

31

R3 X R1

d (VTEMP) ≈K (2.1 mV/°C)

dT

K = 1 + R2

R3X R1

5

Programmable Gain Amplifier With Input Multiplexer

+5V –5V

GND

+5V –5V

IN1

IN2

IC1b

IN3

IN4

A1 A2 A3 A4WR

INPUT

CHANNEL

SELECT

IC1b

+

–

+5V –5V

TC911

VOUT

X1

X 10

X 100 X1000

18 k Ω 99 k Ω 999 kΩ

6

68HC11

7

GAIN

SELECT

WR LATCH

A1 A2 A3 A4

GND

2 kΩ

1 kΩ

1 kΩ

IC1a, b, = Quad Analog Switch

TELCOM SEMICONDUCTOR, INC.

8

3-267

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