Data Sheet

ADGS1208/ADGS1209

Rev. 0 | Page 13 of 33

2

1

3

4

5

6

18

17

16

15

14

13

S3A

S2A

S1A

GPO2

GPO1

NOTES

1. THE EXPOSED PAD IS CONNECTED INTERNALLY.

FOR INCREASED RELIABILITY OF THE SOLDER JOINTS

AND MAXIMUM THERMAL CAPABILITY, IT IS RECOMMENDED

2. NIC = NOT INTERNALLY CONNECTED.

S2B

S1B

GND

CNV

GPO3

ADGS1209

TOP VIEW

(Not to Scale)

Figure 8. ADGS1209 Pin Configuration

Table 9. ADGS1209 Pin Function Descriptions

Pin No.

Mnemonic

Description

1

GPO1

General-Purpose Output 1. This pin is a digital output.

2

GPO2

General-Purpose Output 2. This pin is a digital output.

3

Most Negative Power Supply Potential. In single-supply applications, tie this pin to ground.

4

S1A

Source Terminal 1A. This pin can be an input or output.

5

S2A

Source Terminal 2A. This pin can be an input or output.

6

S3A

Source Terminal 3A. This pin can be an input or output.

7

S4A

Source Terminal 4A. This pin can be an input or output.

8

NIC

Not Internally Connected. This pin is not internally connected.

9

DA

Drain Terminal A. This pin can be an input or output.

10

DB

Drain Terminal B. This pin can be an input or output.

11

S4B

Source Terminal 4B. This pin can be an input or output.

12

S3B

Source Terminal 3B. This pin can be an input or output.

13

S2B

Source Terminal 2B. This pin can be an input or output.

14

S1B

Source Terminal 1B. This pin can be an input or output.

15

Most Positive Power Supply Potential.

16

GND

Ground (0 V) Reference.

17

CNV

Channel Cycle Input. When in round robin mode, the CNV pin is used to cycle through the selected channels.

18

GPO3

General-Purpose Output 3. This pin is a digital output.

19

SDO

Serial Data Output. This pin can be used for daisy chaining a number of these devices together or for reading

back the data stored in a register for diagnostic purposes. The serial data is propagated on the falling edge of

20

registers are set to their default values.

21

CS

Active Low Control Input. CS is the frame synchronization signal for the input data.

22

SCLK

Serial Clock Input. Data is captured on the positive edge of SCLK. Data can be transferred at rates of up to 50 MHz.

23

SDI

Serial Data Input. Data is captured on the positive edge of the serial clock input.

24

GPO4

General-Purpose Output 4. This pin is a digital output.

EPAD

Exposed Pad. The exposed pad is connected internally. For increased reliability of the solder joints and