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Product Detailed Parameters
- Description：IC DAC 14BIT V-OUT 16TSSOP
- Series：nanoDAC+®
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Number of Bits：14
- Number of D/A Converters：4
- Settling Time：8µs
- Output Type：Voltage - Buffered
- Differential Output：No
- Data Interface：SPI, DSP
- Reference Type：External, Internal
- Voltage - Supply, Analog：2.7V ~ 5.5V
- Voltage - Supply, Digital：1.8V ~ 5.5V
- INL/DNL (LSB)：±0.5, ±1 (Max)
- Architecture：String DAC
- Operating Temperature：-40°C ~ 105°C
- Package / Case：16-TSSOP (0.173", 4.40mm Width)
- Supplier Device Package：16-TSSOP
- Mounting Type：Surface Mount
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Overview
The AD5685RBRUZ-RL7 is a quad, 14-bit buffered voltage output Digital-to-Analog Converter (DAC) from the nanoDAC+ family. It features an internal 2.5 V reference with a typical drift of 2 ppm/°C and operates on a single 2.7 V to 5.5 V supply. The device supports a 50 MHz SPI interface with readback or daisy-chain capabilities and includes a user-selectable gain of 1 or 2 via the GAIN pin. Key performance metrics include a maximum relative accuracy (INL) of ±1 LSB, a settling time of 5 µs (minimum), and low power consumption of 3.3 mW at 3 V. It is available in a 16-lead TSSOP package.
Feature Summary
- Quad 14-bit resolution with ±1 LSB maximum INL
- Internal 2.5 V reference with 2 ppm/°C typical drift
- 50 MHz SPI interface with readback/daisy-chain support
- User-selectable output span (Gain = 1 or 2)
Applications
- Optical transceivers
- Base-station power amplifiers
- Process control (PLC I/O cards)
- Industrial automation
- Data acquisition systems
Procurement Notes
Verify the specific suffix 'RL7' indicates tape and reel packaging when sourcing. Confirm that the 'B' grade designation meets the required temperature coefficient specifications for the internal reference. Ensure the ordering code matches the 16-lead TSSOP package variant rather than the LFCSP option.
Selection Notes
Select this component for applications requiring four independent 14-bit channels with high precision. The internal reference eliminates external components but requires checking if the 2.5 V nominal output fits the system's full-scale range. Verify logic voltage compatibility (1.8 V to 5.5 V) with the host microcontroller. Consider the 5 µs settling time against system speed requirements.
Part Context
This part belongs to the AD5686R/AD5685R/AD5684R family, differentiated primarily by resolution: 16-bit, 14-bit, and 12-bit respectively. All members share identical pinouts, interfaces, and reference characteristics. The AD5685R specifically targets mid-range precision needs where 14-bit resolution offers a balance between cost and performance.
Replacement Considerations
The AD5686R (16-bit) and AD5684R (12-bit) are direct pin-compatible substitutes within the same datasheet. For external reference variants, consider the AD5686, AD5684, AD5694, or AD5696 series.
