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
● 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)
● Fixed 19.79 Hz Update Rate
● Simultaneous 50 Hz and 60 Hz Rejection
● 24-Bit No Missing Codes
● 18.5-Bit p-p Resolution (±2.56 V Range)
● On-Chip Functions Rail-Rail Input Buffer and PGA
● 16.5-Bit p-p Resolution (±160 mV Range)
● Interface
●Master or Slave Mode of Operation
●Slave Mode:
●3-Wire Serial
●SPI®, QSPI™, MICROWIRE™, and DSP-Compatible
●Schmitt Trigger on SCLK
● Power
●Specified for Single 3 V and 5 V Operation
●Normal: 1.3 mA @ 3 V
●Power-Down: 9 µA
