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AD7943BR
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Product Detailed Parameters
- Description：IC DAC 12BIT A-OUT 16SOIC
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- 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：16-SOIC (0.295", 7.50mm Width)
- Supplier Device Package：16-SOIC
- Mounting Type：Surface Mount
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Overview
The AD7943BR 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 with guaranteed linearity of ±0.5 LSBs for both Integral Nonlinearity (INL) and Differential Nonlinearity (DNL). The device supports a nominal 5 V supply range (4.5 V to 5.5 V) and consumes typically 5 mW of power. Key performance metrics include a settling time of 600 ns to 0.01% and a glitch impulse of 60 nV-s. It is housed in a 16-lead Small Outline Package (SOP) and functions within an industrial temperature range of -40°C to +85°C.
Feature Summary
- 12-bit resolution with ±0.5 LSB max INL and DNL
- Serial interface with 40 ns strobe pulsewidth
- Low power consumption: typically 5 mW
- Fast settling time: 600 ns to 0.01%
Applications
- Battery-powered instrumentation
- Laptop computers
- Upgrades for AD754x series DAC designs
Procurement Notes
Verify the package type corresponds to the 'R' suffix, indicating a 16-lead SOP. Confirm the temperature grade matches the 'B' suffix (-40°C to +85°C). Ensure the design utilizes a single +5 V supply or adapts to biased mode if lower voltage operation is required. Check that the serial timing parameters meet the system clock requirements.
Selection Notes
Select the AD7943BR when a serial interface is preferred over parallel options like the AD7945. Choose this part for applications requiring low power and fast settling times under a single 5 V supply. If higher accuracy or extended temperature ranges are needed, consider other variants or grades within the AD7943 family.
Part Context
The AD7943BR belongs to the AD7943/AD7945/AD7948 family of 12-bit multiplying DACs. It serves as a high-speed, low-power replacement for industry-standard parts like the AD7543. The 'BR' designation specifically identifies the 16-lead SOP package and the industrial temperature grade.
Replacement Considerations
The AD7943BR is designed to replace the AD7543 in many applications. When substituting, ensure the serial interface timing is compatible. For parallel interface needs, the AD7945 may be a functional alternative within the same family.
