Features and Benefits
- 40-channel DAC in 13 mm × 13 mm 108-lead CSPBGA
- Guaranteed monotonic to 14 bits
- Buffered voltage outputs
Output voltage span of 3.5 V × VREF(+)
Maximum output voltage span of 17.5 V
- System calibration function allowing user-programmable offset and gain
- Pseudo differential outputs relative to REFGND
- Clear function to user-defined REFGND (CLR pin)
- Simultaneous update of DAC outputs ((LDAC pin)
- DAC increment/decrement mode
- Please see data sheet for additional features
The AD5379 contains 40 14-bit DACs in one CSPBGA package. The AD5379 provides a bipolar output range determined by the voltages applied to the VREF(+) and VREF(−) inputs. The maximum output voltage span is 17.5 V, corresponding to a bipolar output range of −8.75 V to +8.75 V, and is achieved with reference voltages of VREF(−) = −3.5 V and VREF(+) = +5 V.
The AD5379 offers guaranteed operation over a wide VSS/VDD supply range from ±11.4 V to ±16.5 V. The output amplifier headroom requirement is 2.5 V operating with a load current of 1.5 mA, and 2 V operating with a load current of 0.5 mA.
The AD5379 contains a double-buffered parallel interface in which 14 data bits are loaded into one of the input registers under the control of the WR, CS, and DAC Channel Address Pins A0 to A7. It also has a 3-wire serial interface that is com-patible with SPI®, QSPI™, MICROWIRE™, and DSP® interface standards and can handle clock speeds of up to 50 MHz.
The DAC outputs are updated upon reception of new data into the DAC registers. All the outputs can be simultaneously updated by taking the LDAC input low. Each channel has a programmable gain and an offset adjust register.
Each DAC output is gained and buffered on-chip with respect to an external REFGND input. The DAC outputs can also be switched to REFGND via the CLR pin.
- Level setting in automatic test equipment (ATE)
- Variable optical attenuators (VOA)
- Optical switches
- Industrial control systems
Product Lifecycle Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (1)
The evaluation board allows the functionality and performance of the AD5379 to be easily evaluated. The eval board connects to a PC via the printer port. Software is provided to allow the user to program the registers of the AD5379.
Please note: This Evaluation software does not run on Windows 8 or Windows 10 (USB driver is non-compliant with OS >Windows 7).
Tools & Simulations
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
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.