AD5533B Datasheet | Analog Devices

.. a 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 ␮s Max Adjustable Voltage Output Range Output Impedance 0.5 ⍀ Output Voltage Span 10 V Readback Capability DSP/Microcontroller patible 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 32-Channel Precision Infinite Sample-and-Hold AD5533B- GENERAL DESCRIPTION The AD5533B bines a 32-channel voltage translation function with an infinite output hold capability. An analog input voltage on the mon 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 acplished 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. Precision infinite droopless sample-and-hold capability. 2. The AD5533B is available in a 74-lead CSPBGA with a body size of 12 mm ϫ 12 mm. 3. In infinite sample-and-hold mode, a total unadjusted error of ± 2.5 m V is achieved by laser-trimming on-chip resistors. FUNCTIONAL BLOCK DIAGRAM DVCC AVCC REF IN REF OUT OFFS IN VDD VSS VOUT 0 VIN TRACK / RESET BUSY DAC GND AGND DAC DGND INTERFACE CONTROL LOGIC VOUT 31 ADC DAC DAC OFFS OUT SER /...