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AD7943BNZ
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Product Detailed Parameters
- Description：IC DAC 12BIT A-OUT 16DIP
- 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-DIP (0.300", 7.62mm)
- Supplier Device Package：16-PDIP
- Mounting Type：Through Hole
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Overview
The AD7943BNZ 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 +3.3 V to +5 V in Biased Mode. Key electrical specifications include ±0.5 LSB maximum integral and differential nonlinearity, a typical power dissipation of 5 mW, and a settling time of 600 ns to 0.01%. The device utilizes an R-2R ladder architecture with segmented MSBs for improved performance. It is housed in a 16-lead Plastic DIP package and supports industrial temperature ranges.
Feature Summary
- 12-bit resolution with guaranteed monotonicity over temperature
- ±0.5 LSB maximum INL and DNL accuracy
- Serial interface with 40 ns strobe pulsewidth capability
- Low glitch impulse of 60 nV-s with amplifier connected
Applications
- Battery-powered instrumentation systems
- Laptop computer peripheral interfaces
- Upgrades for legacy AD754x series DAC designs
Procurement Notes
Verify the specific ordering suffix against the manufacturer's current guide to confirm package type and temperature grade. The 'N' suffix denotes a Plastic DIP package. Ensure compatibility with existing PCB footprints for 16-lead DIP configurations during procurement planning.
Selection Notes
Select the AD7943BNZ when a serial data interface is required for space-constrained designs. Choose this model over parallel variants like the AD7945 if pin count reduction is critical. Verify that the application can accommodate the 16-lead DIP footprint and meets the voltage requirements for either Normal or Biased mode operation.
Part Context
This component belongs to the AD7943/AD7945/AD7948 family of fast 12-bit multiplying DACs. While the AD7945 offers a 12-bit parallel interface and the AD7948 provides an 8-bit byte interface, the AD7943 is distinguished by its serial input structure. All three share similar core DAC performance characteristics and pinout compatibility regarding analog terminals.
Replacement Considerations
The datasheet identifies the AD7543 as a direct industry-standard replacement target. Designers upgrading from the AD7543 should verify that the improved speed and lower power consumption of the AD7943 are compatible with the system timing and power budget.
