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AD5378:  32-Channel 14-Bit Serial/Parallel Bipolar D/A Converter

Product Details


The AD5378 contains 32 14-bit DACs in one CSPBGA package. The AD5378 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 AD5378 guarantees 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 AD5378 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, which is compatible with SPI®, QSPI™, MICROWIRE™, and DSP interface standards and can handle clock speeds of up to 50 MHz.

The DAC outputs are updated when the DAC registers receive 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.

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. Table 1 and Table 2 show the product portfolio for high channel count bipolar and unipolar voltage output DACs.

Applications

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

FEATURES and BENEFITS

  • 32-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
  • See data sheet for additional features

AD5378 Functional Block Diagram

Of Note . . .

The AD5379 Evaluation Board (EVAL-AD5379EB) may be used to evaluate the AD5378.

Documentation

Title Content Type File Type
AD5378: 32-Channel, 14-Bit, Parallel and Serial Input, Bipolar Voltage Output DAC Data Sheet (Rev A, 07/2009) (pdf, 751 kB) Data Sheets PDF
Digital to Analog Converters ICs Solutions Bulletin  (pdf) Solutions Bulletins PDF
Automatic Test Equipment Brochure  (pdf, 2037 kB) Overview PDF
Analog Devices extends its denseDAC™ family of data converters Overview HTML
Extending the denseDAC™ Multichannel D/As  (pdf, 1100 kB)
denseDAC multichannel D/As are Analog Devices digital-to-analog converters with 8 to 40 channels, offering 12-bit to 16-bit resolution.
Overview PDF
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Evaluation Kits & Symbols & Footprints

Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.

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Price, packaging, availability

AD5378 Model Options
Price Table Help

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.


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