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12 位、并行输入数模转换器
Resolution (Bits) 12
Number of DAC channels (#) 1
Interface type Parallel
Output type Buffered Voltage
Settling time (μs) 10
Reference type Ext, Int
Architecture R-2R
Rating Catalog
Output range (Max) (mA/V) 5
Output range (Min) (mA/V) 0
Operating temperature range (C) -40 to 85
  • LOW POWER: 2.5mW
  • FAST SETTLING: 7μs to 1 LSB
  • 1mV LSB WITH 4.095V FULL-SCALE RANGE
  • COMPLETE WITH REFERENCE
  • 12-BIT LINEARITY AND MONOTONICITY
    OVER INDUSTRIAL TEMP RANGE
  • ASYNCHRONOUS RESET TO 0V

The DAC7621 is a 12-bit digital-to-analog converter (DAC) with guaranteed 12-bit monotonicity performance over the industrial temperature range. It requires a single +5V supply and contains an input register, latch, 2.435V reference, DAC, and high speed rail-to-rail output amplifier. For a full-scale step, the output will settle to 1 LSB within 7μs. The device consumes 2.5mW (0.5mA at 5V).

The parallel interface is compatible with a wide variety of microcontrollers. The DAC7621 accepts a 12-bit parallel word, has a double-buffered input logic structure and provides data readback. In addition, two control pins provide a chip select (_CS) function and asynchronous clear (CLR) input. The _CLR input can be used to ensure that the DAC7621 output is 0V on power-up or as required by the application.

The DAC7621 is available in a 20-lead SSOP package and is fully specified over the industrial temperature range of ?40°C to +85°C.