AD7910/AD7920

Rev. C | Page 9 of 24

PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS

GND

2

CS

6

SDATA

5

SCLK

4

AD7910/

AD7920

TOP VIEW

(Not to Scale)

Figure 5. 6-Lead SC70 Pin Configuration

SDATA

2

CS

3

NC

4

8

GND

7

SCLK

6

NC

5

NC = NO CONNECT

AD7910/

AD7920

TOP VIEW

(Not to Scale)

Figure 6. 8-Lead MSOP Pin Configuration

Table 5. Pin Function Descriptions

Pin No.

6-Lead

SC70

Pin No.

8-Lead

MSOP

Mnemonic

Description

6

3

CS

Chip Select. Active low logic input. This input provides the dual function of initiating conversions on the

AD7910/AD7920 and framing the serial data transfer.

1

1

2

7

GND

Analog Ground. Ground reference point for all circuitry on the AD7910/AD7920. All analog input signals

should be referred to this GND voltage.

3

8

5

2

SDATA

Data Out. Logic output. The conversion result from the AD7910/AD7920 is provided on this output as a

serial data stream. The bits are clocked out on the falling edge of the SCLK input. The data stream from

the AD7920 consists of four leading zeros followed by the 12 bits of conversion data, which is provided

MSB first. The data stream from the AD7910 consists of four leading zeros followed by the 10 bits of

conversion data followed by two trailing zeros, which is also provided MSB first.

4

6

SCLK

Serial Clock. Logic input. SCLK provides the serial clock for accessing data from the part. This clock input

is also used as the clock source for the AD7910/AD7920 conversion process.

N/A

4, 5

NC

No Connect.