Part Number: OPA857 Hi,
A TIA circuit was designed using OPA857, and Input Voltage Noise Density and Input Current Noise Density values are required for noise analysis. What are the Input Voltage Noise Density and Input Current Noise Density values of…
Part Number: OPA857 Can the OPA857 be used with an AC-coupled signal? i.e. can I connect a cap between the photodiode and the TIA input to reject DC? Will this affect stability?
Part Number: OPA857 Dear E2E team
I'm trying to evaluate an OPA857 using its built-in test block. This is the circuit I built:
For the first test I closed J2, pulling so TEST_SD to GND. JP1 was open, so IN was floating. Under these conditions I was…
Part Number: OPA857 Hi,
I've been trying to test my design using the OPA857 by injecting current from an ideal current source into the IN pin of the OPA857. However, whenever the probe for injecting current touches the net that connects to the IN pin…
Part Number: OPA857 Other Parts Discussed in Thread: LMH32404 , LMH32401 , OPA818 , OPA859 Hello, team.
Could you please suggest, do we have any updates of OPA857 device?
Customer is wondering if we can propose any modern alternative with better noise specs…
Part Number: OPA857 Other Parts Discussed in Thread: TIDA-00663 Hi team,
customer designs OPA857 but why the output signal is smaller than input signal?
Is there any problem in their testing or circuit, please advise?
Ch1: pin15
Ch3: pin8
Their MCU GOPI…
Part Number: OPA857-DIE Other Parts Discussed in Thread: OPA857 , , OPA855 , LMH32401 , OPA858 , OPA859 , OPA856 Hello,
I was wondering if there are any experimental/test data about this device?
I would expect the input capacitance to be affected by the packaging…
Part Number: OPA857 Other Parts Discussed in Thread: TIDA-00663 , Dear All,
I started from the reference design TIDA-00663. For the photodiode I use the SFH 2400 (wider spectral response) instead of the SFH 2400FA (only sensitive in infrared). The laser…
Part Number: OPA857 Other Parts Discussed in Thread: TINA-TI Hi team,
How much time does it need to recovery its output saturation? We will use this device with large pulse input and then OPA857 output would be saturated. We need its recovery time between…