Part Number: LMH6554 Tool/software: HI ,
We are using LMH6554LE differential amplifier which is given as a input to ADC. Pin 2 VCM of the amplifier is directly connected to AGND. Do we require any 0 ohm resistor on VCM pin for debugging purpose? If yes…
Part Number: LMH6554 Tool/software: Hi,
I have a question regarding the power supply requirement for the LMH6554 full difference amplifier.
I want to use this amplifier as a current sensor amplifier along with a shunt resistor. The current is expected…
Hello Gozkul,
You could try forcing the common-mode voltage of the ADC to be 2.5V from the same supply as the VCM pin of the LMH6654.
The problem may be the common-mode voltage of the ADC is different from the 2.5V supplied to the LMH6554, which results…
Part Number: TINA-TI Other Parts Discussed in Thread: LMH6554 Tool/software: Hi, I am trying to simulate the behavior of LMH6554 while driving a switched capacitor load (red circled). You can see the switches parameters. The nets Vop and Vom saturate although…
Hello Dan,
This could be impacted by resistor choices. I’ll have some time tomorrow afternoon to ask around.
It may also be splitting hairs, that’s part of the fun of analog.
Best,
Alec
Hello Felix,
I was able to discuss with my colleagues; I do think the overdrive recovery and optical TIA application needs are met by our OPA85X family of parts. If you do still require overdrive recovery data on these LMH parts, do know that with a high…
Part Number: LMH6554 I'm following the guidelines from the LMH6554 datasheet and the evaluation board sheet for my design. I realized there are a couple of discrepancies in the application information for single-ended input to differential output con…
Part Number: LMH6554 Other Parts Discussed in Thread: TINA-TI
Hello,
I am trying to use TINA-TI to simulate some Fully Differential Amplifiers (FDAs). Specifically, I am interested in the LMH6554 FDA. I download the LMH6554 TINA-TI reference design,…
Part Number: LMH6554 Other Parts Discussed in Thread: ADS42LB69 , , TINA-TI Dear Sir/Madam,
I am using LMH6554 amplifier in dc coupled configuration to drive ADS42LB69 whose VCM requirement is 1.9V.
The LMH6554 datasheet is mentioning split supply method…