**Part Number:**ADS1260

**Other Parts Discussed in Thread:**REF6045, REF6025

Hi bro,

For the uA solution of ADS1260:

If I choose bigger value R-shunt = 500mΩ for much buffer of avoiding noise,

(1) Vshunt_Max = Isense_Max x Rshunt = 50mA x 500mΩ = 25mV

(2) Dynamic Range = Isense_Max / Iresolution = 50mA / 1uA = 50000

-> (3)Vresolution = Vsense_Max / Dynamic Range = 0.5uV

I can choose PGA Gain =128 for best performance.

Q1: If the current flow direction is only one-way.

For more VIN_DIFF Range and lower Dropout voltage,

is 4.5 V(REF6045) better for Reference voltage instead of 2.5V(REF6025)?

(2) In ADS1260 Datasheet, I get confused in the Table 4:

What is the correct value of Full-scale Diff. input range when Gain =64, 128?

The value in Table 4 is mismatch to the formula rule “gain = 32,64 , use gain = 32 in the calculation”.

Thanks.

-Jax