Part Number: REF6025 Other Parts Discussed in Thread: ADS8887 , , ADS8881EVMV2-PDK , ADS8881 , REF6045 Tool/software: I am using the REF6025 and ADS8887 in a design, with the REF6024.
The datasheet for the REF60xx series, on page 23, in section 9.3…
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…
Hello Roy,
The REF6045 would be the preferred reference for the ADS8339. The external ref buffer was recommended in the datasheet because the REF60xx did not yet exist. There are a couple of cases where you may want to use the REF5045 and an external…
Hello Daniel,
The reference input on the ADS8339 is a switched capacitor, and requires fast dynamic currents to recharge during the conversion process. This requires not only a large charge reservoir (10uF cap), but also a high bandwidth amplifier to…
Hello Andrianirina,
You do not need R15 and can remove it from your schematic.
All supply voltages can be set to 3.3V. Vod will need to be set to 0.75V. Vod can be generated using a similar circuit as Vref/2.
With IDC_EN connected to ground, the…
Hi Lucas,
To obtain the performance, a fully-differential signal close to full-scale needs to be used. Please note the GUI displays the Signal power on the Spectral Analysis page at the bottom right of the screen. The ADS8881EVMV2-PDK is built with…
Hi Burcay,
The reference buffer, OPA333, is probably the main source of noise that you see. This amplifier is not able to directly drive the reference input of the ADS8887, which consists of a switched capacitor requiring high speed dynamic currents…
Hi Markus
Turn on time mentioned in datasheet is time required for REF6125 output to settle withing 0.1% of final value after we toggle the enable pin. TINA model does take into the account time required to enable internal bandgap once you toggle the…
