32-Channel, 14-Bit DAC with Full-Scale Output

Voltage Programmable from 50 V to 200 V

Data Sheet

AD5535B

Rev. A

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FEATURES

High integration

32-channel, 14-bit denseDAC® with integrated high

voltage output amplifier

Guaranteed monotonic

Housed in 15 mm × 15 mm CSP_BGA package

Full-scale output voltage programmable from 50 V to 200 V

via reference input

550 µA drive capability

Integrated silicon diode for temperature monitoring

DSP-/microcontroller-compatible serial interface

1.2 MHz channel update rate

Asynchronous RESET facility

–10°C to +85°C temperature range

APPLICATIONS

Optical microelectromechanical systems (MEMS)

Optical crosspoint switches

Micropositioning applications using piezoelectric actuators

Level setting in automotive test and measurement

GENERAL DESCRIPTION

The AD5535B is a 32-channel, 14-bit denseDAC® with an on-chip

high voltage output amplifier. This device is targeted for optical

micro-electromechanical systems. The output voltage range is

programmable via the REF_IN pin. The output range is 0 V to

50 V when REF_IN = 1 V, and 0 V to 200 V when REF_IN = 4 V.

Each amplifier can source 550 µA, which is ideal for the deflection

and control of optical MEMS mirrors.

The selected digital-to-analog converter (DAC) register is written

to via the 3-wire interface. The serial interface operates at clock

rates of up to 30 MHz and is compatible with DSP and micro-

controller interface standards.

REF_IN is buffered internally on the AD5535B and should be

driven from a stable reference source.

FUNCTIONAL BLOCK DIAGRAM

Figure 1.

RF

R1

RF

R1

RF

R1

RF

R1

INTERFACE

CONTROL

LOGIC

DAC

DAC

DAC

DAC

SYNC

SCLK

DGND

AGND

DAC_GND

RESET

REF_IN

PGND

14-BIT BUS

ANODE

CATHODE

AD5535B