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Product Detailed Parameters
- Description：IC DAC 8BIT QUAD W/AMP 20-SSOP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Number of Bits：-
- Number of D/A Converters：-
- Settling Time：-
- Output Type：-
- Differential Output：-
- Data Interface：-
- Reference Type：-
- Voltage - Supply, Analog：-
- Voltage - Supply, Digital：-
- INL/DNL (LSB)：-
- Architecture：-
- Operating Temperature：-
- Package / Case：20-SSOP (0.209", 5.30mm Width)
- Supplier Device Package：20-SSOP
- Mounting Type：Surface Mount
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Overview
The AD7226BRS is a monolithic CMOS quad 8-bit digital-to-analog converter featuring integrated output buffer amplifiers and interface logic. It utilizes an R-2R ladder architecture with laser-trimmed offsets, eliminating the need for external calibration. The device supports dual supply operation (VDD: 11.4 V to 16.5 V; VSS: –5 V) or single supply (+15 V). Key electrical parameters include a settling time of 4 µs to ±1/2 LSB, relative accuracy of ±0.5 LSB, and differential nonlinearity of ±1 LSB. It operates within an industrial temperature range of –40°C to +85°C and accepts TTL/CMOS compatible parallel data.
Feature Summary
- Four independent 8-bit DACs with buffered voltage outputs on a single chip
- Microprocessor-compatible parallel interface with individual latches controlled by A0/A1 address lines
- Laser-trimmed amplifier offsets ensure no user trimming is required
- Supports both dual supply (-5 V/+15 V) and single supply (+15 V) configurations
Applications
- Process control systems requiring multi-channel analog output
- Automatic test equipment for signal generation
- Automatic calibration of large system parameters such as gain and offset
- Three-phase sine wave generation for motor control
Procurement Notes
Verify the 'B' suffix indicates the industrial temperature grade (-40°C to +85°C) and the 'RS' suffix denotes the SOIC/SSOP package variant per Analog Devices documentation. Confirm RoHS compliance status for specific manufacturing lots, as older revisions may differ. Ensure the source provides the official datasheet reference AD7226.pdf for technical validation.
Selection Notes
Select the AD7226BRS when four synchronized 8-bit channels are needed with high matching accuracy inherent from monolithic fabrication. It is suitable for applications requiring microprocessor interfacing without external latch components. Consider the SOIC/SSOP package if surface mount technology is required instead of the DIP variant. Verify that the required settling time of 4 µs meets the system bandwidth constraints.
Part Context
The AD7226 belongs to the LC2MOS family of precision analog devices from Analog Devices. This process technology integrates high-speed digital logic with precision analog circuits on the same die. The B version specifically designates the industrial temperature range extension compared to commercial variants, ensuring reliability in broader environmental conditions.
Replacement Considerations
The MX7226KN+ is a pin-compatible alternative from Maxim Integrated (now Analog Devices) offering similar quad 8-bit DAC functionality. Verify package compatibility (SOIC/SSOP vs. DIP) and temperature range specifications before substitution.
