Products Mentioned

AD7770 Recommended for New Designs
The AD7770 is an 8-channel, simultaneous sampling ADC. Eight full sigma-delta (Σ-Δ) ADCs are on chip. The AD7770 provides a low input current to allow...
Datasheet
AD7770 on Analog.com

Associated Drivers

AD7779 Recommended for New Designs
The AD7779 is an 8-channel, simultaneous sampling ADC. There are eight full Σ-Δ ADCs on chip. The AD7779 provides an ultralow input current to allow...
Datasheet
AD7779 on Analog.com

Associated Drivers

AD7771 Recommended for New Designs
The AD7771 is an 8-channel, simultaneous sampling analog-to-digital converter (ADC). Eight full Σ-Δ ADCs are on-chip. The AD7771 provides an ultralow...
Datasheet
AD7771 on Analog.com

Associated Drivers

Table of Contents

AD777x: What is the maximum ODR when using SPI for ΣΔ read back?

In both modes, Pin control Mode and SPI mode control, the SPI can be used to read back the data generated by the Σ-Δs.

In SPI control mode, the SPI reads back the Σ-Δ conversion data by setting the GENERAL_USERS’s bits 3 and 4 as described Table 23.   

ODR = Output data rate
SCLK = SPI clock in SPI Control Mode
Nchannel= number of channels which is always 8
Tags: ad7779 ad7771 ad7770 ad777x