AD7400A

Preliminary Technical Data

Rev. PrA | Page 8 of 19

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS

NC = NO CONNECT

AD7400A

TOP VIEW

(Not to Scale)

1

2

3

NC

MCLKOUT

NC

16

15

14

7

8

MDAT

NC

11

10

9

13

12

Figure 5. Pin Configuration (RW-16)

1

2

3

4

8

MCLKIN

7

MDAT

6

5

NC = NO CONNECT

AD7400A

TOP VIEW

(Not to Scale)

Figure 6 Pin Configuration (NS-8)

Table 8. Pin Function Descriptions

Mnemonic

Description

Supply Voltage, 4.5 V to 5.25 V. This is the supply voltage for the isolated side of the AD7400A and

Positive Analog Input. Specified range of ±200 mV.

NC

No Connect.

Ground 1. This is the ground reference point for all circuitry on the isolated side.

Ground 2. This is the ground reference point for all circuitry on the nonisolated side.

MDAT

Serial Data Output. The single bit modulator output is supplied to this pin as a serial data stream.

The bits are clocked out on the rising edge of the MCLKOUT output and valid on the following

MCLKOUT rising edge.

MCLKOUT

Master Clock Logic Output. 10 MHz typical. The bit stream from the modulator is valid on the rising edge

of MCLKOUT.