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 9.3.4 Stabilitypage…
Hi Jax,
Here are the answers to your questions:
The ADS1260 can accept a 4.5 V reference voltage, so the REF6045 will work just as well as the REF6025. Therefore, if the REF6045 offers benefits to your system (larger VDIFF, lower dropout voltage), then…
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 LMH32401…
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…
Part Number: ADS8881EVMV2-PDK Other Parts Discussed in Thread: ADS8881 , REF6045 , I met a new problem about the test of ADS8881EVMV2, and that is my SNR(tested in “ADS8881 GUI”) is much worse than datasheet.
Here is my tested conditions:
…
Other Parts Discussed in Thread: REF6145 , ADS8887 , REF6125 , REF6045 , REF6025 , LM4140 , MUX36S08 Hello,
the REF6145 seems to be an ideal match for the ADS8887 I intend to use in my design. However I do require to have a startup time within the 0.1% error…
