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AD7943BRSZ-REEL
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Product Detailed Parameters
- Description：IC DAC 12BIT A-OUT 20SSOP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Number of Bits：12
- Number of D/A Converters：1
- Settling Time：600µs (Typ)
- Output Type：Current - Unbuffered
- Differential Output：No
- Data Interface：Serial
- Reference Type：External
- Voltage - Supply, Analog：5V
- Voltage - Supply, Digital：5V
- INL/DNL (LSB)：±0.5 (Max), ±0.5 (Max)
- Architecture：R-2R
- Operating Temperature：-40°C ~ 85°C
- Package / Case：20-SSOP (0.209", 5.30mm Width)
- Supplier Device Package：20-SSOP
- Mounting Type：Surface Mount
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Overview
The AD7943BRSZ-REEL is a 12-bit multiplying digital-to-analog converter (DAC) from Analog Devices, featuring a serial interface. It operates on a single +5 V supply in Normal Mode or a +3.3 V to +5 V supply in Biased Mode. The device guarantees ±0.5 LSB integral and differential nonlinearity with a typical power consumption of 5 mW. Key performance metrics include a settling time of 600 ns to 0.01% and a glitch impulse of 60 nV-s. It utilizes a segmented architecture with an R-2R ladder for the lower bits and decoded switches for the MSBs, housed in a 20-lead SSOP package.
Feature Summary
- 12-bit resolution with guaranteed ±0.5 LSB INL and DNL
- Serial interface with 40 ns strobe pulsewidth
- Low power consumption: typically 5 mW
- Fast settling time: 600 ns to 0.01%
- Low glitch impulse: 60 nV-s
Applications
- Battery-powered instrumentation
- Laptop computers
- Upgrades for AD754x series DACs in 5 V designs
Procurement Notes
Verify the specific ordering suffix 'BRSZ-REEL' against the manufacturer's current datasheet to confirm package type (SSOP-20) and reel packaging details. Ensure compatibility with system voltage requirements (+3.3 V to +5 V) and serial timing constraints before procurement.
Selection Notes
Select this component for applications requiring high linearity and low power in a serial interface environment. Compare settling time and glitch impulse specifications against other 12-bit DACs if high-speed signal processing is critical. Ensure the output amplifier selection matches the bandwidth requirements specified in the application notes.
Part Context
The AD7943 is part of the AD7943/AD7945/AD7948 family of fast 12-bit multiplying DACs. While the AD7945 uses a parallel interface and the AD7948 uses an 8-bit byte interface, the AD7943 specifically offers a serial interface. These devices are designed to replace industry-standard AD754x series DACs with improved speed and power performance.
Replacement Considerations
The AD7943 is explicitly documented as a replacement for the AD7543. When substituting, verify pinout compatibility and ensure that the serial interface timing requirements of the AD7943 are met by the host controller.
