AD5533

a FEATURES Infinite Sample-and-Hold Capability to ؎0.018% Accuracy High Integration: 32-Channel SHA in 12 ؋ 12 mm2 LFBGA Per Channel Acquisition Time of 16 ␮s max Adjustable Voltage Output Range Output Voltage Span 10 V Output Impedance 0.5 ⍀ Readback Capability DSP-/Microcontroller-Compatible Serial Interface Parallel Interface Temperature Range –40؇C to +85؇C APPLICATIONS Level Setting Instrumentation Automatic Test Equipment Industrial Control Systems Data Acquisition Low Cost I/O 32-Channel Infinite Sample-and-Hold AD5533* GENERAL DESCRIPTION The AD5533 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. The device is operated with AVCC = 5 V ± 5%, DVCC = 2.7 V to 5.25 V, VSS = –4.75 V to –16.5 V and VDD = 8 V to 16.5 V and requires a stable 3 V reference on REF_IN as well as an offset voltage on OFFS_IN. PRODUCT HIGHLIGHTS 1. Infinite Droopless Sample-and-Hold Capability. 2. The AD5533 is available in a ...