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AD7943ARS-BREEL
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Product Detailed Parameters
- Description：IC DAC 12BIT A-OUT 20SSOP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR)
- Number of Bits：12
- Number of D/A Converters：1
- Settling Time：5µs (Typ)
- Output Type：Current - Unbuffered
- Differential Output：No
- Data Interface：Serial
- Reference Type：External
- Voltage - Supply, Analog：3V ~ 5.5V
- Voltage - Supply, Digital：3V ~ 5.5V
- INL/DNL (LSB)：±1 (Max), ±0.9 (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 AD7943ARS-BREEL is a 12-bit multiplying digital-to-analog converter (DAC) from Analog Devices, featuring a serial interface. It operates in Normal Mode with a +5 V supply or Biased Mode with +3.3 V to +5 V supplies. Key electrical specifications include ±0.5 LSB maximum Integral Nonlinearity (INL) and Differential Nonlinearity (DNL), a typical power consumption of 5 mW, and a settling time of 600 ns to 0.01%. The device utilizes a segmented architecture with an R-2R ladder for the lower 10 bits and decoded switches for the two most significant bits.
Feature Summary
- 12-bit resolution with guaranteed monotonicity over temperature
- Serial interface with 40 ns minimum strobe pulsewidth
- Low glitch impulse of 60 nV-s with amplifier connected
- Operates on single +5 V (Normal) or +3.3 V to +5 V (Biased) supplies
Applications
- Battery-powered instrumentation
- Laptop computers
- Upgrades for AD754x series DACs in 5 V designs
Procurement Notes
Verify the RS-20 package designation corresponding to the SSOP form factor. Confirm that the -BREEL suffix indicates reel packaging as per manufacturer standards. Ensure compatibility with the specified industrial temperature range of –40 °C to +85 °C for the B Grade variant.
Selection Notes
Select this component when a serial interface is required for space-constrained designs. The AD7943 serves as a direct replacement for the industry-standard AD7543, offering superior speed and lower power consumption. Verify that the system can accommodate the external reference voltage requirements inherent to multiplying DAC architectures.
Part Context
This part belongs to 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 provides a serial input structure. All three share similar core performance metrics regarding linearity and power efficiency.
Replacement Considerations
The AD7943 is designed to replace the AD7543 in existing 5 V designs. Pinout compatibility should be verified against legacy DIP or SOP packages if transitioning from older hardware generations.
