Product Details
●The AD7705 and AD7706 are complete 16-bit, low-cost, Sigma Delta ADCs intended for dc and low-frequency ac measurement applications. Their low power (1 mW max @ 3 V) allows them to be used in loop-powered, battery-powered or locally-powered applications. The on-chip Programmable Gain Amplifier with gain settings from I through 128 can accommodate both low-level and high-level analog inputs with no external signal conditioning hardware.
●The AD7705 has two differential channels while the AD7706 has one differential and two pseudo-differential channels. Differential reference inputs also allow maximum flexibility in tailoring the device for use in ratiometric applications.
●### Features and Benefits
● Three Pseudo Differential Input Channel ADCs
●16 Bits No Missing Codes
●0.003% Nonlinearity
● Programmable Gain Front End
●Gains from 1 to 128
● Ability to Buffer the Analog Input
● 2.7 V to 3.3 V or 4.75 V to 5.25 V Operation
● Three-Wire Serial Interface
●SPI®, QSPI™, MICROWIRE™ and DSP Compatible
●Schmitt Trigger Input on SCLK
● Power Dissipation 1 mW max @ 3 V
● Standby Current 8 µA max
● 16-Lead DIP, 16-Lead SOIC and TSSOP Packages
