Part Number: OPA3S2859 Other Parts Discussed in Thread: ADS1285 , , REF7025 Our application is a ratiometric one, where the signal of interest is Sample/Reference. We need to connect to photodiodes where the ratio of the two varies over a large dynamic…
Part Number: BQ27Z561-R2-DEVICE-FW Other Parts Discussed in Thread: ADS1285EVM-PDK , ADS1285 I'm testing the ADS1285EVM-PDK 32bits ADC board, but I met some problems. When I only connect the UBS wire to PC and do not connect sonser, I measure the voltage…
Hi Lhagva,
Below is a preliminary circuit using the THP210 (FDA) and OPA2388 dual, zero-drift (Chopper amplifier) rail-to-rail input amplifier.
Comments:
- Since the sensor has a 32kOhm impedance, the sensor output needs to be buffered to drive…
Hello Shane,
The ADS1282EVM includes two input amplifiers which reduces the input impedance to about 1kOhm.
However, if you have a balanced differential signal, such as a bridge sensor or an isolated sensor, such as a geophone, then you do not need…
Part Number: ADS1256 Other Parts Discussed in Thread: INA821 , LM27762 , , ADS1285 , ADS1260
Hello experts, I tried to use the LM27762 to convert the +5V power supply into a dual power supply +-5V for the INA821. Figure 1 According to Figure 2, I will…
Hi Lhagva,
Lkhagvajantsan Damdinsuren said: 1. Please recommend me Vref voltage for ADC ADS1285? I think 4.096V from external reference chip might be good point.
Since this is 32bit ADC, you would need to have ultra precision 4.096Vref for the application…
