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TI(德州仪器) DAC8802
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  • TI(德州仪器) DAC8802
  • TI(德州仪器) DAC8802
  • TI(德州仪器) DAC8802
  • TI(德州仪器) DAC8802
  • TI(德州仪器) DAC8802
  • TI(德州仪器) DAC8802
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DAC8802

DAC8802

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14 位双通道串行接口乘法数模转换器

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  • 说明
  • 特性
  • 参数
  • 封装 | 引脚 | 尺寸

The DAC8802 is a dual, 14-bit, current-output digital-to-analogconverter (DAC) designed to operate from a single 2.7 V to 5.5 V supply.

The applied external reference input voltage VREF determines the full-scale output current. An internal feedback resistor (RFB) provides temperature tracking for the full-scale output when combined with an external I-to-V precision amplifier.

A doubled-buffered, serial data interface offers high-speed, 3-wire, SPI and microcontroller compatible inputs using serial data in (SDI), clock (CLK), and a chip-select (CS). A common level-sensitive load DAC strobe (LDAC) input allows simultaneous update of all DAC outputs from previously loaded input registers. Additionally, an internal power-on reset forces the output voltage to zero at system turn-on. An MSB pin allows system reset assertion (RS) to force all registers to zero code when MSB = 0, or to half-scale code when MSB = 1.

The DAC8802 is available in an TSSOP-16 package.

  • Relative Accuracy: 1 LSB Max
  • Differential Nonlinearity: 1 LSB Max
  • 2-mA Full-Scale Current ±20%, with VREF = ±10 V
  • 0.5 µs Settling Time
  • Midscale or Zero-Scale Reset
  • Separate 4Q Multiplying Reference Inputs
  • Reference Bandwidth: 10 MHz
  • Reference Dynamics: -105 dB THD
  • SPI™-Compatible 3-Wire Interface: 50 MHz
  • Double Buffered Registers to Enable Simultaneous Multichannel Update
  • Internal Power-On Reset
  • Industry-Standard Pin Configuration
  • APPLICATIONS
    • Automatic Test Equipment
    • Instrumentation
    • Digitally Controlled Calibration

SPI is a trademark of Motorola, Inc.
All other trademarks are the property of their respective owners.

Resolution (Bits)14
Number of DAC channels2
Interface typeSPI
Output typeUnbuffered Current
Settling time (µs)0.5
FeaturesReset to Mid-Scale
Reference typeExt
ArchitectureMultiplying DAC
RatingCatalog
Output range (max) (mA/V)2
Output range (min) (mA/V)0
Sample/update rate (Msps)2
Power consumption (typ) (mW)0.025
Operating temperature range (°C)-40 to 85
TSSOP (PW)1632 mm² 5 x 6.4
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