AD8231ACPZ-WP datasheet(9/25 Pages) AD

部件名	AD8231ACPZ-WP

功能描述	Zero Drift, Digitally Programmable Instrumentation Amplifier

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制造商	AD [Analog Devices]

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AD8231

Data Sheet

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS

PIN 1

INDICATOR

1

NC

2

(IN-AMP –IN) –INA

3

(IN-AMP +IN) +INA

4

NC

11 –VS

12 +VS

10 OUTA (IN-AMP OUT)

9

REF

TOP VIEW

(Not to Scale)

AD8231

NOTES

1. NC = NO CONNECT.

2. THE EXPOSED PAD CAN BE CONNECTED TO THE NEGATIVE

SUPPLY (–VS) OR LEFT FLOATING.

Figure 2. Pin Configuration

Table 6. Pin Function Descriptions

Pin Number

Mnemonic

Description

1

NC

No Connect.

2

−INA (IN-AMP −IN)

Instrumentation Amplifier Negative Input.

3

+INA (IN-AMP +IN)

Instrumentation Amplifier Positive Input.

4

NC

No Connect.

5

SDN

Shutdown.

6

+INB

Operational Amplifier Positive Input.

7

−INB

Operational Amplifier Negative Input.

8

OUTB (OP AMP OUT)

Operational Amplifier Output.

9

REF

Instrumentation Amplifier Reference Pin. It should be driven with a low impedance. Output is

referred to this pin.

10

OUTA (IN-AMP OUT)

Instrumentation Amplifier Output.

11

−VS

Negative Power Supply. Connect to ground in single-supply applications.

12

+VS

Positive Power Supply.

13

CS

Chip Select. Enables digital logic interface.

14

A0

Gain Setting Bit (LSB).

15

A1

Gain Setting Bit.

16

A2

Gain Setting Bit (MSB).

EPAD

Exposed Pad. Can be connected to the negative supply (−VS) or left floating.

Rev. C | Page 8 of 24

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