AD7782BRUZ-REEL7

模数转换器 - ADC 2 Chnl non-writeable 24-bit ADC

Product Details

The AD7782 and AD7783 are 24-bit low cost, low power Sigma Delta ADCs intended for dc and low frequency ac measurement applications. They are Read-only ADCs and have no writeable registers. This leads to a very simple interface between ADC and controller. Since their power consumption is low, the devices can be loop powered, battery powered or locally powered. The two-setting on-chip PGA can accommodate either a low-level or high-level analog input with no external signal conditioning hardware. Operating options are pin-programmable, not software programmable.

### Features and Benefits

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2-Channel, 24-Bit Σ-Δ ADC

Pin Configurable No Programmable Registers 

Pin Selectable Input Channels 

Pin Programmable Input Ranges ±2.56 V or ±160 mV

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Fixed 19.79 Hz Update Rate

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Simultaneous 50 Hz and 60 Hz Rejection

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24-Bit No Missing Codes

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18.5-Bit p-p Resolution ±2.56 V Range

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On-Chip Functions Rail-Rail Input Buffer and PGA

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16.5-Bit p-p Resolution ±160 mV Range

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Interface

Master or Slave Mode of Operation 

Slave Mode: 

3-Wire Serial 

SPI®, QSPI™, MICROWIRE™, and DSP-Compatible 

Schmitt Trigger on SCLK

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Power

Specified for Single 3 V and 5 V Operation 

Normal: 1.3 mA @ 3 V 

Power-Down: 9 µA