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Amelie Zheng
13 days ago
Amplifiers
Amplifiers forum
LMH32401: if the -VBIAS of LMH32401 connect to GND directly, what will the negative bias be between Vin- and Vin+
TI Thinks Resolved
Part Number:
LMH32401
Hi Team, May I ask if the -VBIAS of
LMH32401
connect to GND directly, what will the negative bias be between Vin- and Vin+? If using PD instead of APD, there is no need for a large negative bias, about -0.5V is enough.
Amelie Zheng
7 days ago
Amplifiers
Amplifiers forum
LMH32401: ALC
Part Number:
LMH32401
Hi Team, As for
LMH32401
' feature ALC, could you give more detail about this? •Integrated ambient light cancellation What's the meaning of ambient light mentioned here? including the sunlight or the APD noise...
Amelie Zheng
15 days ago
Amplifiers
Amplifiers forum
LMH32401: the enable time is inconsistent when the gain resistance is 20k
Part Number:
LMH32401
Hi team, In the
LMH32401
specification, the enable time is inconsistent when the gain resistance is 20k. The table writes a typical value of 850ns, but the given waveform is less than 100ns. Please help to confirm which one is...
Hasan Babiker31
1 month ago
Amplifiers
Amplifiers forum
RE: LMH32401: Input impedance of LMH32401 with enable pin high
Hello AJ, Please refer to the following: "When the amplifier is in its low-power mode, the clamp circuitry is still active thereby protecting the TIA input. The ambient light cancellation loop is disabled when the amplifier is placed in power...
SimaJalaleddine
2 months ago
Code Composer Studio™
Code Composer Studio™ forum
RE: Compiler/LMH32401: The exact marking of the part#LMH32401IRGTR is not as same as the one ‘L32401’ maked in the datesheet
Hello Michael, I received word from the team that the devices marked as L01A0 has the same die as the devices marked as L32401. There are no differences between the two. Thank you, Sima
Yannick Bertrand
1 month ago
Amplifiers
Amplifiers forum
RE: LMH32401: Alternate DC cancellation/cutoff
Yes, it's for a transimpedance circuit. I need a bandwidth of approx. 40MHz for a 10pF Cin photodiode, hence the need for an amplifier with a good bandwidth. The output will be fed to an integrator circuit (hence the need to cancel DC current, so...
Hasan Babiker31
3 months ago
Amplifiers
Amplifiers forum
RE: LMH32401: Looking for the best TIA
Hello Art, The devices you are looking at are way above the requirements needed to build this trans-impedance circuit. Note that the transimpedance gain doesn't determine the GBP of the amplifier but rather the noise gain of the circuit (which is...
Krishna Sanjeevi
4 months ago
Amplifiers
Amplifiers forum
LMH32401: Reg. Gain setting of LMH32401
TI Thinks Resolved
Part Number:
LMH32401
Hi, Can the gain of
LMH32401
be changed dynamically while IDC_EN is LOW(enabled), by toggling the GAIN pin to HIGH or LOW via a microcontroller or any other digital circuit? thanks, Krishna
Helen chen
4 months ago
Amplifiers
Amplifiers forum
LMH32401: The photo diodes used to test LMH32401
Part Number:
LMH32401
In the
LMH32401
EVM UG, on page 4, it wrote: "the input trace can be used to connect a common three-terminal photo-diode in a TO package. The photo-diode can be mounted over the edge of the board where the cathode can be connected...
Hasan Babiker31
4 months ago
Amplifiers
Amplifiers forum
RE: LMH32401: Need unencrypted SPICE model, would like to sign NDA
Hello Yannick, The model for the
LMH32401
isn't encrypted, you can find the .lib file in the Pspice model. Best, Hasan Babiker
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