AD5371

PRODUCTION

40-Channel, 14-Bit, Serial Input, Voltage Output DAC

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Overview

  • 40-channel DAC in 80-lead LQFP and 100-ball CSP_BGA
  • Guaranteed monotonic to 14 bits
  • Maximum output voltage span of 4 × VREF(20 V)
  • Nominal output voltage span of −4 V to +8 V
  • System calibration function allowing user-programmable offset and gain
  • Channel grouping and addressing features
  • Thermal shutdown function
  • See datasheet for additional features

The AD5371 contains 40 14-bit DACs in a single 80-lead LQFP or 100-ball CSP_BGA. The device provides buffered voltage outputs with a span of 4× the reference voltage. The gain and offset of each DAC can be independently trimmed to remove errors. For even greater flexibility, the device is divided into five groups of eight DACs. Three offset DACs allow the output range of the groups to be adjusted. Group 0 can be adjusted by Offset DAC 0, Group 1 can be adjusted by Offset DAC 1, and Group 2 to Group 4 can be adjusted by Offset DAC 2.

The AD5371 offers guaranteed operation over a wide supply range, with VSS from −16.5 V to −4.5 V and VDD from 9 V to 16.5 V. The output amplifier headroom requirement is 1.4 V operating with a load current of 1 mA.

The AD5371 has a high speed serial interface that is compatible with SPI, QSPI, MICROWIRE, and DSP interface standards and can handle clock speeds of up to 50 MHz. It also has a 100 MHz low voltage differential signaling (LVDS) serial interface.

The DAC registers are updated on reception of new data. All the outputs can be updated simultaneously by taking the LDAC input low. Each channel has a programmable gain and an offset adjust register to allow removal of gain and offset errors.

Each DAC output is gained and buffered on chip with respect to an external SIGGNDx input. The DAC outputs can also be switched to SIGGNDx via the CLR pin.

APPLICATIONS

  • Level setting in automatic test equipment (ATE)
  • Variable optical attenuators (VOA)
  • Optical switches
  • Industrial control systems
  • Instrumentation

AD5371
40-Channel, 14-Bit, Serial Input, Voltage Output DAC
AD5371 Functional Block Diagram AD5371 Pin Configuration
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Software Resources


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.

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Evaluation Kits

eval board
EVAL-AD5371

AD5371 Evaluation Board

Features and Benefits

  • Full Featured Evaluation Board
  • On Board Reference and Buffers
  • USB operation of IC
  • PC Software for control of DACs
  • Stand-alone operation

Product Details

The AD5371 evaluation board can be used as a stand alone board with control coming from an external DSP or micro-controller or it can be connected to a PC. Software is provided which can be used to program the registers of the AD536x. Control of the AD536x is achieved via a USB interface.

EVAL-AD5371
AD5371 Evaluation Board
EVAL-AD5371EBZANGLE-web EVAL-AD5371EBZBOTTOM-web EVAL-AD5371EBZTOP-web

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