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 repre-sentation 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 A0A4 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.
AD5533 Maximum Ratings
(TA = 25°C unless otherwise noted)
VDD to AGND . . . . . . . . . . . . . . . .. . . . . . . . . . . . 0.3 V to +17 V
VSS to AGND . . . . . . . . . . . . . . . . . . . .. . . . . . . . +0.3 V to 17 V
AVCC to AGND, DAC_GND . . . . . . . . . .. . .. . . . . . . 0.3 V to +7 V
DVCC to DGND . . . . . . . . . . . . . . . . .. . . . . . . . . . . 0.3 V to +7 V
Digital Inputs to DGND . . . . . . .. . . .. .. . . 0.3 V to DVCC + 0.3 V
Digital Outputs to DGND . . . . . . . . . .. .. . . 0.3 V to DVCC + 0.3 V
REF_IN to AGND, DAC_GND . . . . . . . . .. . . .. . . . . . 0.3 V to +7 V
VIN to AGND, DAC_GND . . . . . . . . . . . .. . .. . . . . . . 0.3 V to +7 V
VOUT031 to AGND . . . . . . . . . . . ... . VSS 0.3 V to VDD + 0.3 V
VOUT031 toVSS . . . . . . . . . . . .. . . . . . . . . . . . . 0.3 V to +24 V
OFFS_IN to AGND . . . . . . . . . . . .. . .. . VSS 0.3 V to VDD + 0.3 V
OFFS_OUT to AGND . . .. . . .. . . .. . AGND 0.3 V to AVCC + 0.3 V
AGND to DGND. . . . . . . . . . .. . . .. . . . . . . . . . . . . 0.3 V to +0.3 V
Operating Temperature Range
Industrial . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40°C to +85°C
Storage Temperature Range . . . . . . . . . . . . . 65°C to +150°C
Junction Temperature (TJ max) . . . . .. . . . . . . . . . . . . . . . . 150°C
74-Lead LFBGA Package, JA Thermal Impedance . .. . . . 41°C/W
Reflow Soldering
Peak Temperature . . . . . . . . . . . . . . . . . . . . . . .. . . .. . . . . 220°C
Time at Peak Temperature . . . . . . . . . . .. . . .. . . 10 sec to 40 sec
AD5533 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 40C to +85C
AD5533 Typical Application
Level Setting
Instrumentation
Automatic Test Equipment
Industrial Control Systems
Data Acquisition
Low Cost I/O
AD5533 Connection Diagram

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