GENERAL DESCRIPTION
The TDA9901 is a wideband, low noise amplifier with differential inputs and outputs. The TDA9901 incorporates an AGC function with digital control. The TDA9901 is optimized for fast switching between different gain settings, preserving small phase and amplitude error.

FEATURES
• 130 MHz, −3 dB small signal bandwidth
• Digitally controlled gain
• TTL/CMOS compatible digital inputs (3.3 or 5 V)
• TTL single ended or differential clock input with PECL compatibility
• 24 dB gain control range
• Five steps of 6 dB plus 6 dB fixed gain
• 30 dB gain maximum
• High impedance differential inputs
• Low impedance differential outputs
• High power supply rejection
• 125 nV/√Hz output voltage noise density at 30 dB gain
• Fast gain settling
• Dual control modes: transparent or latched.

APPLICATIONS
• Linear AGC systems
• IF amplifier in IF conversion systems (e.g. base stations or satellite receivers)
• Instrumentation
• Multi-purpose amplifier
• Driver for differential ADCs (e.g. TDA8768).