Features and Benefits
- High relative accuracy (INL): ±2 LSB maximum at 16 bits
- Low drift 2.5 V reference: 2 ppm/°C typical
- Tiny package: 3 mm × 3 mm, 16-lead LFCSP
- Total unadjusted error (TUE): ±0.1% of FSR maximum
- Offset error: ±1.5 mV maximum
- Gain error: ±0.1% of FSR maximum
- High drive capability: 20 mA, 0.5 V from supply rails
- User selectable gain of 1 or 2 (GAIN pin)
- Reset to zero scale or midscale (RSTSEL pin)
- 1.8 V logic compatibility
- Low glitch: 0.5 nV-sec
- 400 kHz I2C-compatible serial interface
- Low power: 3.3 mW at 3 V
- 2.7 V to 5.5 V power supply
- −40°C to +105°C temperature range
The AD5694R is a low power, quad, 16-bit buffered voltage output DAC. The device includes a 2.5 V, 2 ppm/°C internal reference (enabled by default) and a gain select pin giving a full-scale output of 2.5 V (gain = 1) or 5 V (gain = 2). The device operates from a single 2.7 V to 5.5 V supply, is guaranteed monotonic by design, and exhibits less than 0.1% FSR gain error and 1.5 mV offset error performance. The device is available in a 3 mm × 3 mm LFCSP and a TSSOP package.
The AD5694R also incorporates a power-on reset circuit and a RSTSEL pin that ensures that the DAC outputs power up to zero scale or midscale and remain there until a valid write takes place. Each part contains a per-channel power-down feature that reduces the current consumption of the device to 4 μA at 3 V while in power-down mode.
The AD5694R uses a versatile 2-wire serial interface that operates at clock rates up to 400 kHz, and includes a VLOGIC pin intended for 1.8 V/3 V/5 V logic.
- High Relative Accuracy (INL).
AD5694R (12-bit): ±1 LSB maximum.
- Low Drift 2.5 V On-Chip Reference.
2 ppm/°C typical temperature coefficient.
5 ppm/°C maximum temperature coefficient.
- Two Package Options.
3 mm × 3 mm, 16-lead LFCSP.
- Optical transceivers
- Base-station power amplifiers
- Process control (PLC I/O cards)
- Industrial automation
- Data acquisition systems
Product Lifecycle Recommended for New Designs
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
Evaluation Kits (2)
This Evaluation Board is no longer available for ordering. Please see the AD5696R Evaluation Board.
The Evaluation board for the AD5694R contains a SDP connection and software allowing the AD5694R to be controlled from a SDP board.
The SDP Controller board is a separate list item in the ordering guide below (EVAL-SDP-CB1Z). If you have not previously purchased an SDP Controller board, please do so to ensure a full evaluation setup.
The EVAL-AD5696RSDZ evaluation board is designed to help users quickly prototype AD5696R circuits and reduce design time. The AD5696R operates from a single 2.7 V to 5.5 V supply. The AD5696R incorporates an internal 2.5 V reference to give an output voltage of 2.5 V or 5 V. The EVAL-AD5696RSDZ evaluation board also incorporates additional voltage references.
The EVAL-AD5696RSDZ interfaces to the USB port of a PC via a system demonstration platform (SDP) board. The analysis control evaluation (ACE) software is available for download from the EVAL-AD5696RSDZ product page to use with the evaluation board to allow the user to program the AD5696R. A PMOD connection is also available to allow the connection of microcontrollers to the evaluation board without the SDP board. Note that when a microcontroller is used through the PMOD connection, the SDP board must be disconnected, and the user is unable to operate the ACE software.
The EVAL-AD5696RSDZ evaluation board is compatible with any Analog Devices SDP board, which can be purchased separately.
For full details, see the AD5696R data sheet, which must be used in conjunction with UG-726 when using the EVAL-AD5696RSDZ evaluation board.
Software & Systems Requirements
Tools & Simulations
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
Models for the following parts are available in LTspice:
Precision DAC Error Budget Tool
The Precision DAC Error Budget Tool is a web application that calculates the DC Accuracy of precision DAC signal chains. It shows how the static errors accumulate throughout your signal chain to quickly evaluate the design tradeoffs. Calculations include the DC errors introduced by Voltage References, Operation Amplifiers and Precision DACs.
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
Sample & Buy
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