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

? 150/40 μA source/sink drive capability

? Integrated silicon diode for temperature monitoring

? Serial peripheral interface (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

GENERAL DESCRIPTION

The AD45335 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. REF_IN

is buffered internally on the AD45335 and should be driven from a

stable reference source.

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

via the 3-wire interface. The SPI operates at clock rates of up to

30 MHz.