Hello Hailey,
1. When the ladder attenuator is set of 0dB of attenuation, the resulting gain of the LMH6518 is the 10dB (in low gain (LG) mode) plus the 8.86dB of the ouput amplifier stage. This 18.8dB is then normalized, which mathematically & graphically…
Part Number: LMH6518 Tool/software: Hi TI experts,
Now We want to use LMH6518 to driver high speed ADC. Vcm from ADC is 0.9V.
Question1: What is the range of Vcm input about LMH6518(indulding min/typ/max)
Question2: What about setting up the Vcm pin…
Part Number: LMH6518 Hi Team,
We want to evaluate LMH6518 output voltage if will damage the ADC input, so check with you what does the LMH6518 max output voltage? Thanks.
Alec, Jorgen has hopefully communicated that my tests at ~0.4V have show significant offset drift over 7 days on all 32 units I have tested. The test was done at Max gain, however its has affect all ranges. The error occur at the output of the chip regardless…
Part Number: LMH6518 Other Parts Discussed in Thread: LMH6552 , Hi team,
I have a application details want to confirm wiith you while using LMH6518+LMH6552 as the DSO signal chain.
what should I do with the GND cooper in the system, if I just solder the…
Yoshikazu-san,
I have sent you a message to allow us to connect offline.
FORUM POST UPDATE: A datasheet clarification for the LMH6518 is being completed; for steady-state input signals the absolute maximum differential input voltage is +/- 400mV. Transient…
Part Number: LMH6518 Hello,
In the LMH6518 datasheet, I am reading that AV_DIFF_MIN or AV_DIFF_MAX have about +/-0.7dB gain variation.
I can also read that the ZOUT_DIFF variation is +/- 8Ohm.
The voltage divider made of ZOUT_DIFF and differential 100Ohm…
Hello Sumeet,
For the second stage VGA/PGA, I would recommend either the LMH6518 or PGA870 which have a wide gain range that includes attenuation and a fully differential output to drive an ADC and reduce the common-mode error and distortion as you mentioned…
Part Number: LMH6518 Hello,
We use the LMH6518 with the auxiliary amplifier turned off.
The complementary auxiliary outputs are left floating as well as the VCM_Aux input pin!
Is this correct or should we somehow bias the VCM_Aux input? Same for the output…