ZHCS294G June 2011 – May 2024 TPA6211A1-Q1
PRODUCTION DATA
The input resistor (RI) can be selected to set the gain of the amplifier according to Equation 19.
The internal feedback resistors (RF) are trimmed to 40 kΩ.
Resistor matching is very important in fully differential amplifiers. The balance of the output on the reference voltage depends on matched ratios of the resistors. CMRR, PSRR, and the cancellation of the second harmonic distortion diminishes if resistor mismatch occurs. Therefore, TI recommends 1%-tolerance resistors or better to optimize performance.