Features and Benefits
- 6-channel, current output DAC
- 14-bit resolution
- Programmable output current ranges
- Channel 0: 0 mA to 300 mA, −60 mA to +300 mA, −60 mA to 0 mA
- Channel 1: 0 mA to 140 mA, 0 mA to 250 mA
- Channel 2: 0 mA to 55 mA, 0 mA to 150 mA
- Channel 3, Channel 4, Channel 5: 0 mA to 45 mA, 0 mA to 100 mA
- All current sourcing output ranges scale back by up to 0.5×
- 1.25 V, on-chip voltage reference
- Integrated precision reference resistor
- SPI interface
- Reset function
- Output current monitor
- Compliance voltage monitor
- Die temperature monitor
- Integrated thermal shutdown
- 49-ball, 4 mm × 4 mm WLCSP package
- Operating temperature: −40°C to +105°C
The AD5770R is a 6-channel, 14-bit resolution, low noise, programmable current output, digital-to-analog converter (DAC) for photonics control applications. The device incorporates a 1.25 V, on-chip voltage reference, a 2.5 kΩ precision resistor for reference current generation, die temperature, output monitoring functions, fault alarm, and reset functions.
The AD5770R contains five 14-bit resolution current sourcing DAC channels and one 14-bit resolution current sourcing and sinking DAC channel.
Channel 0 can be configured to sink up to 60 mA and source up to 300 mA. Channel 1 to Channel 5 have multiple programmable output current sourcing ranges set by register access.
Each DAC operates with a wide power supply rail from 0.8 V to AVDD − 0.4 V for optimizing power efficiency and thermal power dissipation.
The AD5770R operates from a 2.9 V to 5.5 V AVDD supply and is specified over the −40°C to +105°C temperature range.
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)
The EVAL-AD5770RSDZ is a fully featured evaluation board that is designed to help the user evaluate the AD5770R 6-channel, 14-bit, current output digital-to-analog converter (DAC).
The EVAL-AD5770RSDZ evaluation board is controlled by the following two methods: the on-board P11 connector and the EVAL-SDP-CB1Z (Connector P10). The system development (SDP-B) board uses the AD5770R evaluation software to control the EVAL-AD5770RSDZ evaluation board via a Windows® PC USB port.
The EVAL-AD5770RSDZ board contains a power solution that uses the ADP5073 switching regulator to generate −2 V from a +3.3 V supply and the ADP1741 linear regulator to generate +2 V from a +3.3 V supply. Alternatively, the AD5770R also uses a linear power supply connected through the nine onboard connectors (P0 to P8). The AD5770R incorporates an internal 1.25 V precision reference. The EVAL-AD5770RSDZ board contains an additional 1.25, V 0.5 ppm/°C voltage reference.
The AD5770R evaluation software provides an intuitive graphic user interface (GUI) that configures and controls the AD5770R over the serial peripheral interface (SPI).
The AD5770R is a 6-channel, 14-bit resolution, low noise, programmable current output DAC for photonics control applications. The output current ranges are software selectable, and channels are routed to the MUX_OUT pin for external monitoring.
See the AD5770R data sheet for full details and consult the AD5770R data sheet in conjunction with this user guide when using the EVAL-AD5770RSDZ board.
The PMOD compatible EVAL-AD5770R-PMDZ evaluation/prototyping board is a minimalist 6-channel, 14-bit, current-output DAC module designed as a low-cost alternative to the fully featured AD5770R evaluation board. The board allows users to make direct electrical and physical connections to the AD5770R, enabling rapid hardware and software development for their application/solution.
SPI PMOD peripheral connectors can be found on many third-party MCU or FPGA development platforms; the EVAL-AD5770R-PMDZ can be connected directly into these systems. Users can quickly develop their own code by using the ADICUP3029 demo application as a reference.
Documentation & Resources
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:
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.
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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.