Part Number: LMH6554 Hello,
My TinaTI sim of the LMH6554 shows the differential outputs not fully reaching the set VCM with a small input signal. The design parameters are:
The input signal is a 20mV sinewave, VCM is set by the ADC at 700mV. I have set…
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…
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 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…
Hello Mastik,
We have reviewed the amplifiers in the schematic:
THS4021
This is a decompensated amplifier with a gain requirement of 10V/V. The note says Gain of 12, but the configuration shows around 7V/V.
The DAC is current source output with 300kOhm…
Hello Miles,
Were you able to sum these signals into one amplifier with no issues?
Proper termination are critical in high frequencies especially with transmission lines. Looks like this is done in the schematic at input and output. Grounding the input…
Part Number: LMH6554 Hi
We have been having some soldering problems with the LMH6554 on our boards - we have noticed that the paste layer provided by TI online (via ultralibrarian https://vendor.ultralibrarian.com/TI/embedded/?gpn=LMH6554&package=NHJ&pin…
Part Number: LMH6554 Hello,
My customer is planning to use the LMH6554 for ADC input driver application.
So, they are looking for a low noise, negative-voltage device with the following conditions
- VIN = +12V or +2.5V, VOUT = -2.5V, IOUT = 0.5A
Could…
Part Number: ADS42JB69 Other Parts Discussed in Thread: LMH6554 , ADC3664 , ADS62P44 , ADS62P43 , ADC16DV160 Hello,
We purchased a DC-coupled, single-ended ADC card with a ADS42JB69 ADC that is being driven by a LMH6554. The ADC driver circuit follows the…