Other Parts Discussed in Thread: DUAL-DIYAMP-EVM, , TINA-TI, TLV906X, OPA365
I have similar question to the previous one.
One of my customers is evaluating TLV9062 using Inverter Amplifier type (Figure 11. Inverting Amplifier Schematic) of TI OPAMP evaluation board, DUAL-DIYAMP-EVM.
They use the following parameters for the evaluation.
R1/6=Open, C4/7=47nF, R3/8=1kohm, C3/6=22pF, R2/7= 150kohm, R4/9=560kohm, R5/10=560kohm, C5/8=100nF, C1/2=100nF
Also each terminal voltages are below.
And REFA/B=2.2V supplied from a power supply separated from V+ power supply,
They took a gain-frequency characteristics in these conditions. As the result, the gain characteristics was lower about 5 dB than TINA-TI simulation result (about 43dB)
when 10kHz signal was input.
Their questions are the follows.
Q1. What do you think the cause? Is it caused by TLV9062 gain limitation at 10kHz?
Q2. Is it difficult to design a band pass filter of gain x150 using TLV9062?
Your reply would be much appreciated.