AD5934

Rev. 0 | Page 7 of 32

PIN CONFIGURATION AND DESCRIPTIONS

NC

1

NC

2

NC

3

RFB

4

SCL

16

SDA

15

AGND2

14

AGND1

13

VIN

5

VOUT

6

NC

7

DGND

12

AVDD2

11

AVDD1

10

MCLK

8

DVDD

9

NC = NO CONNECT

AD5934

TOP VIEW

(Not to Scale)

Figure 3. Pin Configuration

It is recommended to tie all supply connections (Pin 9, Pin 10, and Pin 11) and run from a single supply between 2.7 V and 5.5 V. It is also

recommended to connect all ground signals together (Pin 12, Pin 13, and Pin 14).

Table 5. Pin Function Descriptions

Pin No.

Mnemonic

Description/comment

1, 2, 3, 7

NC

No Connect.

4

RFB

External Feedback Resistor. Connected from Pin 4 to Pin 5 and used to set the gain of the current-to-voltage

amplifier on the receive side.

5

VIN

Input to Receive Transimpedance Amplifier. Presents a virtual earth voltage of VDD/2.

6

VOUT

Excitation Voltage Signal Output.

8

MCLK

Master Clock for the System. Supplied by user.

9

DVDD

Digital Supply Voltage.

10

AVDD1

Analog Supply Voltage 1.

11

AVDD2

Analog Supply Voltage 2.

12

DGND

Digital Ground.

13

AGND1

Analog Ground 1.

14

AGND2

Analog Ground 2.

15

SDA

16

SCL