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AD5379:  40-Channel, 14-Bit, Parallel and Serial Input, Bipolar Voltage-Output DAC

产品详情

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.

Applications

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

特点和优势

  • 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

Functional Block Diagram for AD5379

文档

快讯名称 内容类型 文件类型
AD5379: 40-Channel, 14-Bit, Parallel and Serial Input, Voltage-Output DAC Data Sheet  (Rev B, 07/2009) (pdf, 763 kB) 产品数据手册 PDF
analogZone Review of the AD5379, 40-Channel, 14-Bit Bipolar DAC For ATE And Optical Networking  (htm)
... One of the incredible things about this 40-channel part is that the channel-to-channel isolation is quoted at a typical 100 dB! How the designers achieved that I cannot imagine but it is a critical specification when you are handling so many signals simultaneously.
(analogZone, 10/14/2002)
技术文章 HTM
Digital to Analog Converters ICs Solutions Bulletin  (pdf) 解决方案通报 PDF
Automatic Test Equipment Brochure  (pdf, 2037 kB) 概况 PDF
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.
概况 PDF
RAQs index 非常见问题解答 HTML
术语表 专业词汇表 HTML

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AD5379 评估板
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购买/样片
EVAL-AD5379EBZ 产品状态: 量产 Evaluation Board $ 159.00 -

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