AD5530/AD5531

Rev. B | Page 8 of 20

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS

REFAGND

1

REFIN

2

LDAC

3

SDIN

4

SYNC

5

RBEN

6

SCLK

7

SDO

8

16

15

DUTGND

14

13

NC

12

GND

11

PD

10

CLR

9

AD5530/

AD5531

TOP VIEW

(Not to Scale)

NC = NO CONNECT

Figure 4. Pin Configuration

Table 7. Pin Function Descriptions

Pin No.

Mnemonic

Description

1

REFAGND

For bipolar ±10 V output range, this pin should be tied to 0 V.

2

REFIN

This is the voltage reference input for the DAC. Connect to external 5 V reference for specified bipolar ±10 V output.

3

LDAC

Load DAC Logic Input (Active Low). When taken low, the contents of the shift register are transferred to the DAC

register. LDAC can be tied permanently low, enabling the outputs to be updated on the rising edge of SYNC.

4

SDIN

Serial Data Input. This device accepts 16-bit words. Data is clocked into the input register on the falling edge of SCLK.

5

SYNC

Active Low Control Input. Data is clocked into the shift register on the falling edges of SCLK.

6

RBEN

Active Low Readback Enable Function. This function allows the contents of the DAC register to be read. Data

from the DAC register is shifted out on the SDO pin on each rising edge of SCLK.

7

SCLK

Clock Input. Data is clocked into the input register on the falling edge of SCLK.

8

SDO

Serial Data Out. This pin is used to clock out the serial data previously written to the input shift register or can be

used in conjunction with RBEN to read back the data from the DAC register. This is an open drain output; it

should be pulled high with an external pull-up resistor. In standalone mode, SDO should be tied to GND or left

high impedance.

9

CLR

are untouched.

10

PD

This allows the DAC to be put into a power-down state.

11

GND

Ground Reference.

12

NC

Do not connect anything to this pin.

13

Negative Analog Supply Voltage. −12 V ± 10% or −15 V ± 10%, for specified performance.

14

DUTGND

15

DAC Output.

16

Positive Analog Supply Voltage. 12 V ± 10% or 15 V ± 10%, for specified performance.