SP Amp DIFF AMP Dual ±2.625V/5.25V 24-Pin SSOP

The CS3302 is a high input impedance differential in, differential out amplifier with programmable gain, optimized for amplifying signals from high impedance sensors such as hydrophones. The gain settings are binary weighted (x1, x2, x4, x8, x16, x32, x64) and are selected using simple pin settings. Two sets of external inputs, INA and INB, simplify system design as inputs from a sensor and test DAC. An internal 800? termination can also be selected for noise tests.Amplifier input impedance is very high, requiring less than 1 pA of input current. Noise performance is very good at 1 µVp-p between 0.1 Hz and 10 Hz, and a noise density of 8.5 nV/ vHz over the 200 Hz to 2 kHz bandwidth. Distortion performance is also extremely good, typically -118 dB THD. Low input current, low noise, and low total harmonic distortion make this amplifier ideal for high impedance differential sensors requiring maximum dynamic range.

• Signal bandwidth: DC to 2 kHz
• Selectable gain: x1, x2, x4, x8, x16, x32, x64
• Differential inputs, differential outputs
  • Multiplexed inputs: INA, INB, 800? termination
  • Rough / fine charge outputs for CS5371/72
  • Max signal amplitude: 5 Vp-p differential
  • Ultra-low input bias: < 1 pA
• Excellent noise performance
• 1 µVp-p between 0.1 Hz and 10 Hz
  • 8.5 nV/ vHz from 200 Hz to 2 kHz
• Low total harmonic distortion
  • -118 dB THD typical (0.000126%)
  • -112 dB THD maximum (0.000251%)
• Low power consumption
  • Normal / LPWR / PWDN: 5 mA, 3.3 mA, 10 µA
• Single or dual power supply configurations
  • VA+ = +5 V; VA- = 0 V; VD = +3.3 V to +5 V
  • VA+ = +2.5 V;VA- = -2.5 V;VD = +3.3 V