AD7782BRUZ-REEL7
数据手册.pdf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