GENERAL DESCRIPTION

The AD45335 is a 32-channel, 14-bit denseDAC® with an on-chip

high voltage output amplifier. The AD45335 is targeted for optical

micro-electromechanical systems. The output voltage range is programmable

through 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.

REF_IN is buffered internally on the AD45335 and must be driven

from a stable reference source.

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

to using the 3-wire interface. The serial peripheral interface (SPI)

operates at clock rates of up to 30 MHz.

FEATURES

► High integration

► 32-channel, 14-bit denseDAC® with integrated high voltage output

amplifier

► Guaranteed monotonic

► Housed in a 15 mm × 15 mm CSP_BGA package

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

through reference input

► 150/40 μA source/sink drive capability

► Integrated silicon diode for temperature monitoring

► SPI

► 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