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Product Detailed Parameters
- Description：IC DAC 14BIT V-OUT 16TSSOP
- Series：nanoDAC+®
- Mfr：Analog Devices Inc.
- Package：Tube
- 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 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 provides four analog outputs with a maximum relative accuracy (INL) of ±1 LSB and a total unadjusted error of ±0.1% of FSR. It supports a 50 MHz SPI interface with readback or daisy-chain capabilities and includes user-selectable gain settings for full-scale outputs of 2.5 V or 5 V.
Feature Summary
- Quad 14-bit resolution with ±1 LSB maximum INL
- Internal 2.5 V reference with 2 ppm/°C typical temperature coefficient
- 50 MHz SPI serial interface with 1.8 V logic compatibility
- User-selectable gain (GAIN pin) for 2.5 V or 5 V full-scale output range
Applications
- Optical transceivers
- Base-station power amplifiers
- Process control PLC I/O cards
- Industrial automation systems
- Data acquisition systems
Procurement Notes
Verify the package type against the ordering suffix; BRU indicates a 16-lead TSSOP package. Confirm the grade (A or B) required for specific accuracy specifications. Ensure the internal reference configuration matches the design requirements, as it is enabled by default. Check for RoHS compliance status in the latest datasheet revision.
Selection Notes
Select the AD5685RBRUZ when 14-bit resolution and low drift are required for multi-channel applications. Choose this part over the AD5686R if lower cost is prioritized over 16-bit precision. Ensure the load impedance and capacitive load requirements fall within the stability limits specified in the output characteristics table.
Part Context
The AD5685RBRUZ belongs to the nanoDAC+ family, which also includes the 16-bit AD5686R and 12-bit AD5684R. These devices share functional similarities but differ in resolution and accuracy grades. The BRU suffix specifically denotes the 16-lead TSSOP package option, distinct from the LFCSP package available for other variants.
Replacement Considerations
The AD5686RBRUZ offers higher 16-bit resolution but maintains pin compatibility. The AD5684RBRUZ provides 12-bit resolution at a potentially lower cost point. For external reference designs, the non-R versions (AD5685) are available, though they lack the integrated low-drift reference.
