Hello,
I have an AM26LV32E which has to feed some inputs of an ADS131E04 ADC.
As the ADC data sheet states that all digital inputs must be low at power up, and fail safe outputs of AM26LV32E are high, can I simply put pull-down resistors on AM26LV32E outputs? How large can they be, so that I do not draw excessive static power when outputs are high?
My fastest signal is a 5 MHz SPI clock.
Thanks in advance
Stefano
Hi Ron,
I think I have to better explain my application.
I have a sensor board with the ADC and transceiver on it, which is remotely controlled by a microcontroller installed on an acquisition board. AM26LV32E (and its counterpart 31E) are present and needed only because of their physical translation of a single ended LVTTL signal in a differential RS422 one. The two power supplies are not shared, as the ADC is beyond an isolation barrier.
And, finally, I have no room for G and not G signals, as all the interface pins are already used for other signals. That was the reason why I was thinking about pull down resistors.
Here you can find a block diagram of the sensor board.
Thanks,
Stefano
