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AD7948ARSZ-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：Parallel
- 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 AD7948ARSZ-BREEL is a 12-bit multiplying digital-to-analog converter (DAC) from Analog Devices Inc., featuring an 8-bit byte interface. It operates on a single +3.3 V to +5 V supply, consuming typically 5 mW of power. The device guarantees ±0.5 LSBs integral and differential nonlinearity with a fast settling time of 600 ns to 0.01% using the AD843 amplifier. It includes data override logic, input registers, and control logic for flexible system integration.
Feature Summary
- 12-bit resolution with ±0.5 LSB max INL and DNL
- 8-bit byte interface with CSMSB, CSLSB, WR, and LDAC controls
- Low power consumption: 5 mW typical at +5 V supply
- Fast settling time: 600 ns to 0.01% full-scale range
Applications
- Battery-powered instrumentation
- Laptop computer systems
- Upgrades for legacy 754x series DAC designs
Procurement Notes
Verify the specific ordering suffix 'BREEL' against official Analog Devices documentation to confirm reel packaging details and tape-and-reel specifications. Ensure the component matches the RS-20 SSOP package outline and industrial temperature range (-40°C to +85°C) required for the application environment.
Selection Notes
Select the AD7948 variant when an 8-bit parallel interface is preferred over serial or full 12-bit parallel options within the same family. Confirm that the system requires a multiplying DAC architecture capable of handling AC reference signals for two-quadrant multiplication applications.
Part Context
This component belongs to the AD7943/AD7945/AD7948 family of fast 12-bit multiplying DACs. While the AD7943 offers a serial interface and the AD7945 provides a 12-bit parallel interface, the AD7948 specifically utilizes an 8-bit byte interface to facilitate easier data handling in microcontroller-based systems.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided datasheet. Designers may consider the AD7548 for legacy compatibility, though performance characteristics differ significantly.
