AMP01

Data Sheet

Rev. E | Page 12 of 29

*MAKE NO ELECTRICAL CONNECTION

OUTPUT

REFERENCE

TEST PIN*

–IN

SENSE

TEST PIN*

V–

V+

TEST PIN*

+IN

AMP01

TOP VIEW

(Not to Scale)

1

2

3

4

20

19

18

17

5

16

6

15

7

14

8

13

9

12

10

11

Figure 4. 20-Lead SOIC

Table 9. 20-Lead SOIC Pin Function Descriptions

Pin No.

Mnemonic

Description

1

Gain Resistor Pin. Install a resistor between 200 kΩ and 100 Ω to Pin 20.

2

TEST PIN

Test Pin. Pin 2 is reserved for factory test. Do not connect.

3

−IN

Inverting Signal Input

4

Output Offset Voltage Null. Connect a 100 kΩ trimmer across Pin 4 and Pin 5 with wiper to negative supply voltage.

5

Output Offset Voltage Null. Connect a 100 kΩ trimmer across Pin 4 and Pin 5 with wiper to negative supply voltage.

6

TEST PIN

Test Pin. Pin 6 is reserved for factory test. Do not connect.

7

SENSE

This pin completes the feedback loop for the inverting input amplifier. Normally connected to the output.

8

REFERENCE

This pin shifts the output CMV. Normally connected to ground.

9

OUTPUT

Output of the In-Amp.

10

Negative Supply Voltage for Output Amplifier.

11

V−

Negative Supply Voltage for Input Amplifiers.

12

V+

Positive Supply Voltage for Input Amplifiers.

13

Positive Supply Voltage for Output Amplifier.

14

Scale Resistor. See the Gain section and Figure 32 for value.

15

Scale Resistor. See the Gain section and Figure 32 for value.

16

Input Offset Voltage Null. Connect a 100 kΩ trimmer across Pin 16 and Pin 17 with wiper to negative supply voltage.

17

Input Offset Voltage Null. Connect a 100 kΩ trimmer across Pin 16 and Pin 17 with wiper to negative supply voltage.

18

+IN

Noninverting Signal Input.

19

TEST PIN

Test Pin. Pin 19 is reserved for factory test. Do not connect.

20

Gain Resistor Pin. Install a resistor between 200 kΩ and 100 Ω to Pin 1.