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Product Detailed Parameters
- Description：IC DAC 12BIT V-OUT 16SOIC
- Series：DACPORT®
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Number of Bits：12
- Number of D/A Converters：1
- Settling Time：10µs
- Output Type：Voltage - Buffered
- Differential Output：No
- Data Interface：SPI
- Reference Type：External, Internal
- Voltage - Supply, Analog：±10.8V ~ 16.5V
- Voltage - Supply, Digital：-
- INL/DNL (LSB)：±1 (Max), ±0.9 (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 AD7243AR-REEL is a 12-bit voltage output digital-to-analog converter (DAC) from Analog Devices, fabricated on LC2MOS technology. It integrates an output amplifier and a Zener voltage reference on a monolithic CMOS chip, eliminating the need for external trimming. The device supports single or dual supply operation with selectable output ranges of 0 V to +5 V, 0 V to +10 V, or ±5 V. It features a serial interface compatible with microcomputers and DSPs, supporting data rates up to 5 MHz for a DAC update rate of 300 kHz. Key static performance metrics include a relative accuracy of ±1 LSB (max) and nonlinearity of ±1/2 LSB (max).
Feature Summary
- Integrated 12-bit DAC with on-chip 5 V Zener voltage reference and buffered output amplifier.
- Three selectable output voltage ranges: 0 V to +5 V, 0 V to +10 V, and ±5 V.
- Serial interface with daisy-chain capability via SDO pin for multi-DAC systems.
- Clear function (CLR) sets output to 0 V or –REFIN for power-on reset.
Applications
- Process control systems requiring precise analog signal generation.
- Industrial automation equipment needing reliable digital-to-analog conversion.
- Digital signal processing (DSP) systems input/output ports.
- Multi-channel DAC arrays utilizing the daisy-chain serial interface.
Procurement Notes
Verify that the ordering suffix 'REEL' indicates tape-and-reel packaging rather than tube packaging. Confirm the specific grade (A, B, or S) matches the required temperature range, as the base part number may denote different industrial or extended temperature variants. Ensure the datasheet revision corresponds to the manufacturing lot for accurate timing specifications.
Selection Notes
Select the AD7243AR-REEL when a complete 12-bit solution with integrated reference and amplifier is required in a surface-mount SOIC package. Choose this variant over DIP packages for automated assembly processes. Verify that the system power supply allows for the necessary headroom, particularly for the 0 V to +10 V range which requires VDD ≥ +14.25 V. Consider the 300 kHz update rate against system bandwidth requirements.
Part Context
The AD7243 belongs to the DACPORT family of complete digital-to-analog converters. The AR suffix typically denotes the SOIC-16 package option, while the REEL suffix specifies the reel packaging format for high-volume surface mount production. This component is part of Analog Devices' legacy LC2MOS product line, designed for robust mixed-signal applications.
Replacement Considerations
Direct replacements within the same family include other AD7243 variants such as AD7243ARZ (tube) or AD7243BNZ (DIP), provided the package and temperature grade are compatible. Cross-family replacements require verification of pin compatibility, resolution, and interface protocols.
