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TLV5614 - 产品图解：
TLV5614-12 位 3us 四路 DAC，具有串行输入、可编程稳定时间、低功耗和 H/W 或 S/W 断电功能
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TI产品 - TLV5614介绍

TLV5614 - 12 位 3us 四路 DAC，具有串行输入、可编程稳定时间、低功耗和 H/W 或 S/W 断电功能

TLV5614是TI德州仪器公司的一款精密DAC(=<10MSPS)产品，TLV5614是12 位 3us 四路 DAC，具有串行输入、可编程稳定时间、低功耗和 H/W 或 S/W 断电功能，本站介绍了TLV5614的封装应用图解、特点和优点、功能等，并给出了与TLV5614相关的TI元器件型号供参考。

TLV5614 - 12 位 3us 四路 DAC，具有串行输入、可编程稳定时间、低功耗和 H/W 或 S/W 断电功能 - 精密DAC(=<10MSPS) - 数模转换器 - 德州仪器

产品描述

The TLV5614 is a quadruple 12-bit voltage output digital-to-analog converter (DAC) with a flexible 4-wire serial interface. The 4-wire serial interface allows glueless interface to TMS320, SPI, QSPI, and Microwire serial ports. The TLV5614 is programmed with a 16-bit serial word comprised of a DAC address, individual DAC control bits, and a 12-bit DAC value. The device has provision for two supplies: one digital supply for the serial interface (via pins DVDD and DGND), and one for the DACs, reference buffers, and output buffers (via pins AVDD and AGND). Each supply is independent of the other, and can be any value between 2.7 V and 5.5 V. The dual supplies allow a typical application where the DAC will be controlled via a microprocessor operating on a 3 V supply (also used on pins DVDD and DGND), with the DACs operating on a 5 V supply. Of course, the digital and analog supplies can be tied together.

The resistor string output voltage is buffered by a x2 gain rail-to-rail output buffer. The buffer features a Class AB output stage to improve stability and reduce settling time. A rail-to-rail output stage and a power-down mode makes it ideal for single voltage, battery based applications. The settling time of the DAC is programmable to allow the designer to optimize speed versus power dissipation. The settling time is chosen by the control bits within the 16-bit serial input string. A high-impedance buffer is integrated on the REFINAB and REFINCD terminals to reduce the need for a low source impedance drive to the terminal. REFINAB and REFINCD allow DACs A and B to have a different reference voltage then DACs C and D.

The TLV5614 is implemented with a CMOS process and is available in a 16-terminal SOIC package. The TLV5614C is characterized for operation from 0°C to 70°C. The TLV5614I is characterized for operation from –40°C to 85°C.

产品特性

  • Four 12-Bit D/A Converters
  • Programmable Settling Time of Either 3 µs or 9 µs Typ
  • TMS320, (Q)SPI™, and Microwire™ Compatible Serial Interface
  • Internal Power-On Reset
  • Low Power Consumption: 8 mW, Slow Mode – 5-V Supply 3.6 mW, Slow Mode – 3-V Supply
  • Reference Input Buffer
  • Voltage Output Range ...2× the Reference Input Voltage
  • Monotonic Over Temperature
  • Dual 2.7-V to 5.5-V Supply (Separate Digital and Analog Supplies)
  • Hardware Power Down (10 nA)
  • Software Power Down (10 nA)
  • Simultaneous Update
  • applications
    • Battery Powered Test Instruments
    • Digital Offset and Gain Adjustment
    • Industrial Process Controls
    • Machine and Motion Control Devices
    • Communications
    • Arbitrary Waveform Generation

SPI and QSPI are trademarks of Motorola, Inc. Microwire is a trademark of National Semiconductor Corporation.

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