View Full Version : Amp9 input sensitivity?
Is the input sensitivity of Amp9 4.0 V peak-to-peak?
It is higher, I don't know exactly, but it comes with protection diodes that make it cut out at ~5V...
------X-max. can be several meters on any driver, too bad it can be done only once...------
I was curious about this too.. so here it is from the datasheet:
[u]INPUT STAGE DESIGN</u>
The TAA4100A input stage is configured as an inverting amplifier that allows the system designer
flexibility in setting the low frequency response. The gain is internally set at approximately 30dB with a typical input impedance of 50kohm.
Please note that the input stage of the TAA4100A runs off of an internally regulated 5V supply. Thus, the input signal should not exceed 5Vpp (absolute maximum is 6Vpp). Due to the gain structure of the TAA4100A, it will likely be necessary to drive the input stage with more than 5Vpp to achieve the saturated sine wave output numbers shown in the typical characteristics. If this requirement is needed for a specific application, then the input pins (pins 1-4) should be schottky diode clamped between AGND (pin 10) and 5VGEN (pin 11). Suitable schottky diode arrays are available in small package footprints from multiple semiconductor companies.
May require a line driver if your source is outputting a limited voltage.
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