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Product Detailed Parameters
- Description：IC DAC 12BIT V-OUT 16LFCSP
- Series：nanoDAC+®
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Number of Bits：12
- Number of D/A Converters：2
- Settling Time：7µs
- Output Type：Voltage - Buffered
- Differential Output：No
- Data Interface：SPI, DSP
- Reference Type：External
- Voltage - Supply, Analog：2.7V ~ 5.5V
- Voltage - Supply, Digital：1.8V ~ 5.5V
- INL/DNL (LSB)：±0.12, ±1 (Max)
- Architecture：String DAC
- Operating Temperature：-40°C ~ 105°C
- Package / Case：16-WFQFN Exposed Pad, CSP
- Supplier Device Package：16-LFCSP (3x3)
- Mounting Type：Surface Mount
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Overview
The AD5687BCPZ-RL7 is a dual, 12-bit buffered voltage output digital-to-analog converter (DAC) from the nanoDAC+ family. It operates on a single 2.7 V to 5.5 V supply and features a versatile 50 MHz SPI interface with readback or daisy-chain capabilities. The device includes user-selectable gain of 1 or 2 via the GAIN pin, allowing full-scale outputs of 2.5 V or 5 V respectively. Key performance metrics include ±1 LSB maximum relative accuracy (INL), ±0.1% FSR total unadjusted error, and low power consumption of 3.3 mW at 3 V. It incorporates a power-on reset circuit and per-channel power-down modes.
Feature Summary
- Dual 12-bit resolution with ±1 LSB INL and ±1 LSB DNL
- User-selectable gain (×1 or ×2) for flexible output ranges
- Power-on reset to zero scale or midscale via RSTSEL pin
- Per-channel power-down reducing current to 4 µA
Applications
- Optical transceivers
- Base station power amplifiers
- Process control I/O cards
- Industrial automation systems
- Data acquisition systems
Procurement Notes
Verify the specific suffix RL7 indicates reel packaging when sourcing. Confirm that the B grade meets the required temperature range of -40°C to +105°C. Ensure the LFCSP package dimensions match the PCB footprint requirements. Check for moisture sensitivity levels if storage conditions are not controlled.
Selection Notes
Select this component for applications requiring dual channels with high DC accuracy and low power. The 12-bit resolution is suitable for general-purpose control rather than high-precision instrumentation. Consider the 20 mA drive capability for direct load driving. Verify logic compatibility with the 1.8 V to 5.5 V VLOGIC range.
Part Context
This part belongs to the AD5689/AD5687 nanoDAC+ family. The AD5687 is the 12-bit variant of the AD5689, which offers 16-bit resolution. Both share identical pinouts, interfaces, and functional blocks, differing primarily in resolution and associated linearity specifications.
Replacement Considerations
The AD5689R is a related device with internal reference and 16-bit resolution. For single-channel needs, consider the AD5693. Direct pin-compatible replacements within the same family should be verified against resolution and accuracy requirements.
