16-Channel, 16-Bit Voltage Output denseDAC
The AD5766/AD5767 are 16-channel, 16-bit/12-bit, voltage output denseDAC® digital-to-analog converters (DACs).
The DACs generate output voltage ranges from an external 2.5 V reference. Depending on the voltage range selected, the midpoint of the output span can be adjusted, allowing a minimum output voltage as low as −20 V or a maximum output voltage of up to +14 V. Each of the 16 channels can be monitored with an integrated output voltage multiplexer.
The AD5766/AD5767 have integrated output buffers that can sink or source up to 20 mA. In conjunction with these buffers, a low frequency signal can be superimposed onto each DAC output via dedicated dither pins. These dedicated dither pins simplify the system design by reducing the number of external components required for a similar external implementation, like operational amplifiers or resistors. The reduction of external components makes the AD5766/AD5767 suitable for indium phosphide Mach Zehnder modulator (InP MZM) biasing applications.
The devices incorporate a power-on reset (POR) circuit that ensures that the DAC outputs are clamped to ground on power up and remain at this level until the output range of the DAC is configured. The outputs of all DACs are updated through register configuration, with the added functionality of user-selectable DAC channels to be simultaneously updated.
The AD5766/AD5767 use a versatile 4-wire serial interface that operates at clock rates of up to 50 MHz for write mode and is compatible with serial peripheral interface (SPI), QSPI™, MICROWIRE™, and DSP interface standards. The AD5766/ AD5767 also contain a VLOGIC pin intended for 1.8 V/3.3 V/5 V logic.
The AD5766/AD5767 are available in a 4 mm × 4 mm WLCSP package and a 40-lead LFCSP package. The AD5766/AD5767 operate at a temperature range of −40°C to +105°C.
- Mach Zehnder modulator bias control
- Optical networking
- Industrial automation
- Data acquisition systems
- Analog output modules
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.
These evaluation boards integrate a power solution using the ADP5071. The ADP5071 switching regulator offers a power solution by generating a bipolar supply of 8 V and −22 V from a 3.3 V input to create a DAC voltage output range of −20 V to +6 V. Alternatively, supplying the DAC with a linear power supply via the on-board connector, J9, generates all ranges.
The on-board connector, via J10, or the EVAL-SDP-CB1Z system demonstration platform (SDP) board, via J1, can control the AD5766/AD5767. The SDP enables the control of evaluation boards through the USB port of a Windows® based PC using the AD5766/AD5767 the evaluation software, ACE.
The AD5766/AD5767 are 16-channel, 16-bit/12-bit, voltage output denseDAC® converters. The DACs generate output ranges from a 2.5 V reference. Output buffers permit the AD5766/AD5767 to source or sink up to 20 mA. The range is software selectable and any channel can be routed to the monitor pin for external monitoring. The integration of the reference and output buffers creates an easy to use universal solution.
The devices require four power supplies. AVDD and AVSS are the positive and negative high voltage power supplies, AVCC is the analog supply for the low voltage DAC circuitry, and a VLOGIC supply pin sets the logic levels for the digital interface pins.
The ACE software of the EVAL-AD5766SD2Z/EVAL-AD5767SD2Z has an intuitive graphic user interface (GUI) for the configuration of AD5766/AD5767 modes of operation through the synchronous serial port (SPORT) interface. Visit the ACE software page to view plug in modules for the evaluation boards and Circuits from the Lab® (CFTL) demo boards of many other Analog Devices devices.
Complete specifications for the AD5766/AD5767 are available in the AD5766/AD5767 data sheet, which must be consulted in conjunction with theuser guide (UG-1070) when using the EVAL-AD5766SD2Z/EVAL-AD5767SD2Z.
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.
The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.