Data Sheet

AD5541A

Rev. B | Page 7 of 20

PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS

AGND

3

REF

4

CS

5

10

DGND

9

LDAC

8

DIN

7

SCLK

6

AD5541A

TOP VIEW

(Not to Scale)

Figure 4. AD5541A 10-Lead MSOP Pin Configuration

Table 6. AD5541A Pin Function Descriptions

Pin No.

Mnemonic

Description

1

Analog Supply Voltage.

2

Analog Output Voltage from the DAC.

3

AGND

Ground Reference Point for Analog Circuitry.

4

REF

Voltage Reference Input for the DAC. Connect to an external 2.5 V reference. The reference can range from

5

CS

Logic Input Signal. The chip select signal is used to frame the serial data input.

6

SCLK

Clock Input. Data is clocked into the serial input register on the rising edge of SCLK. The duty cycle must be

between 40% and 60%.

7

DIN

Serial Data Input. This device accepts 16-bit words. Data is clocked into the serial input register on the rising edge

of SCLK.

8

LDAC

LDAC Input. When this input is taken low, the DAC register is simultaneously updated with the contents of the

serial register data.

9

DGND

Digital Ground. Ground reference for digital circuitry.

10

Logic Power Supply.