I have mounted an AD7172-2 on my board and trying to vary it's sample rate but I am not able to.
AVDD1 = AVDD2=5V
IOVDD = 5V
ATMEGA164P Micro= 5V
Using Single-Ended Channel
AIN1 = + input
Using Internal Oscillator
Using AVDD1-AVSS as reference by setting bit (5:4) = (11) of SETUP CONFIG 0
I have set the following values to the registers
ADC MODE REGISTER = 0x0000 (for internal oscillator and continuous mode)
INTERFACE MODE REGISTER = 0x0100 (setting DOUT_RESET)
CHANNEL REGISTER 0 = 0x8024 ( setting AIN1 as +ve i/p and AIN4 as -ve i/p)
SETUP CONFIG0= 0x0030 (setting AVDD1-AVSS as reference)
FILTER CONFIG 0= 0x0000
When I apply a 1Hz Sine-wave (offset applied) to the input i.e. AIN1 , the sampling rate is around 20SPS. How can I change the sampling rate. I tried couple of configurations for FILTER CONFIG0 but none give me satisfying result.