AD5535B

Data Sheet

Rev. A | Page 8 of 16

Table 5. Pin Function Descriptions

Mnemonic

Description

AGND

Analog GND Pins.

Analog Supply Pins. Voltage range from 4.75 V to 5.25 V.

Output Amplifier High Voltage Supply. Voltage range from (REF_IN × 50) + 1 V to 225 V.

PGND

Output Amplifier Ground Reference Pins.

DGND

Digital GND Pins.

Digital Supply Pins. Voltage range from 2.7 V to 5.25 V.

DAC_GND

Reference GND Supply for All DACs.

REF_IN

Reference Voltage for Channel 0 to Channel 31. Reference input range is 1 V to 4 V and can be used to program the full-

scale output voltage from 50 V to 200 V.

Analog Output Voltages from the 32 Channels.

ANODE

Anode of Internal Diode for Diode Temperature Measurement.

CATHODE

Cathode of Internal Diode for Diode Temperature Measurement.

SYNC

Active Low Input. This is the frame synchronization signal for the serial interface. While SYNC is low, data is transferred in

upon the falling edge of SCLK.

SCLK

Serial Clock Input. Data is clocked into the shift register upon the falling edge of SCLK. The pin operates at clock speeds of

up to 30 MHz. Internal pull-up device on logic input; therefore, it can be left floating and defaults to a logic high

condition.

Serial Data Input. Data must be valid upon the falling edge of SCLK.

TEST

For normal operation, tie this pin low.

RESET

Active Low Input. This pin can also be used to reset the complete device to its power-on reset conditions. Zero code is

loaded to the DACs.

NC

No Connect. Do not connect to these pins.