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DAC7568 - 产品图解:
DAC7568-具有 2.5V、2ppm/℃ 内部参考的 12 位、八通道、超低短时脉冲波形干扰、电压输出 DAC
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TI产品 - DAC7568介绍
DAC7568 - 具有 2.5V、2ppm/℃ 内部参考的 12 位、八通道、超低短时脉冲波形干扰、电压输出 DAC

DAC7568是TI公司的一款精密DAC(=<10MSPS)产品,DAC7568是具有 2.5V、2ppm/℃ 内部参考的 12 位、八通道、超低短时脉冲波形干扰、电压输出 DAC,本页介绍了DAC7568的产品说明、应用、特性等,并给出了与DAC7568相关的TI元器件型号供参考。

DAC7568 - 具有 2.5V、2ppm/℃ 内部参考的 12 位、八通道、超低短时脉冲波形干扰、电压输出 DAC - 精密DAC(=<10MSPS) - 数模转换器 - TI公司(Texas Instruments,德州仪器)

产品描述

The DAC7568, DAC8168, and DAC8568 are low-power, voltage-output, eight-channel, 12-, 14-, and 16-bit digital-to-analog converters (DACs), respectively. These devices include a 2.5V, 2ppm/°C internal reference (disabled by default), giving a full-scale output voltage range of 2.5V or 5V. The internal reference has an initial accuracy of 0.004% and can source up to 20mA at the VREFIN/VREFOUT pin. These devices are monotonic, providing excellent linearity and minimizing undesired code-to-code transient voltages (glitch). They use a versatile 3-wire serial interface that operates at clock rates up to 50MHz. The interface is compatible with standard SPI, QSPI, Microwire, and digital signal processor (DSP) interfaces.

The DAC7568, DAC8168, and DAC8568 incorporate a power-on-reset circuit that ensures the DAC output powers up at either zero scale or midscale until a valid code is written to the device. These devices contain a power-down feature, accessed over the serial interface, that reduces current consumption to typically 0.18µA at 5V. Power consumption (including internal reference) is typically 2.9mW at 3V, reducing to less than 1µW in power-down mode. The low power consumption, internal reference, and small footprint make these devices ideal for portable, battery-operated equipment.

The DAC7568, DAC8168, and DAC8568 are drop-in and function-compatible with each other, and are available in TSSOP-16 and TSSOP-14 packages.

产品特性

  • Relative Accuracy:
    • DAC7568 (12-Bit): 0.3 LSB INL
    • DAC8168 (14-Bit): 1 LSB INL
    • DAC8568 (16-Bit): 4 LSB INL
  • Glitch Energy: 0.1nV-s
  • Internal Reference:
    • 2.5V Reference Voltage (disabled by default)
    • 0.004% Initial Accuracy (typ)
    • 2ppm/°C Temperature Drift (typ)
    • 5ppm/°C Temperature Drift (max)
    • 20mA Sink/Source Capability
  • Power-On Reset to Zero Scale or Midscale
  • Ultralow Power Operation: 1.25mA at 5V Including Internal Reference Current
  • Wide Power-Supply Range: +2.7V to +5.5V
  • Monotonic Over Entire Temperature Range
  • Low-Power Serial Interface with Schmitt- Triggered Inputs: Up to 50MHz
  • On-Chip Output Buffer Amplifier with Rail-to-Rail Operation
  • Temperature Range: –40°C to +125°C

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