GENERAL DESCRIPTION

The AD5533B combines a 32-channel voltage translation function with an infinite output hold capability. An analog input voltage on the common input pin, VIN, is sampled and its digital representation transferred to a chosen DAC register. VOUT for this DAC is then updated to reflect the new contents of the DAC register. Channel selection is accomplished via the parallel address inputs A0–A4 or via the serial input port. The output voltage range is determined by the offset voltage at the OFFS_IN pin and the gain of the output amplifier. It is restricted to a range from VSS + 2 V to VDD – 2 V because of the headroom of the output amplifier.

FEATURES

Infinite Sample-and-Hold Capability to ±0.018 Accuracy

Infinite Sample-and-Hold Total Unadjusted Error ±2.5 m V

High Integration:

32-Channel DAC in 12 mm 12 mm CSPBGA

Per Channel Acquisition Time of 16 μs Max

Adjustable Voltage Output Range

Output Impedance 0.5 Ω

Output Voltage Span 10 V

Readback Capability

DSP/Microcontroller Compatible Serial Interface

Parallel Interface

Temperature Range –40°C to +85°C

APPLICATIONS

Optical Networks

Automatic Test Equipment

Level Setting

Instrumentation

Industrial Control Systems

Data Acquisition

Low Cost I/O