Data Sheet

AMP01

Rev. E | Page 23 of 29

APPLICATIONS CIRCUITS

R1

100Ω

R2

200Ω

TRIM

SENSE

7

9

8

REFERENCE

10

11

15

14

12

13

18

1

2

3

2kΩ

+IN

–IN

2kΩ

–15V

0.047µF

0.047µF

+15V

COMPLIANCE, TYPICALLY ±10V

LINEARITY ~0.01%

OUTPUT RESISTANCE AT 20mA ~5MΩ

POWER BANDWIDTH (–3dB) ~60kHz

INTO 500Ω LOAD

20

AMP01

V+

V–

Figure 39. High Compliance Bipolar Current Source with 13-Bit Linearity

7

9

8

10

11

15

14

12

13

18

1

2

3

2.75kΩ

+IN

–IN

0V

2kΩ

0.047µF

AMP01

DIFFERENTIAL INPUT OF 100mV FOR 16mA SPAN

LINEARITY 0.01% OF SPAN

0.047µF

R5

2.21kΩ

R6

500Ω

ZERO TRIM

R2

200Ω

REF-02

R3

100Ω

4

6

2

R1

100Ω

+15V

TO +30V

4mA TO 20mA

–5V

ALL RESISTORS 1% METAL FILM

V–

V+

R4

100Ω

Figure 40. 13-Bit Linear 4 mA to 20 mA Transmitter Constructed by Adding a Voltage Reference;

Thermocouple Signals can be Accepted Without Preamplification