4305Q16-U

4305Q16-U is a pre-trimmed analogue Engine® dynamics processor IC. It is a single-chip Analog Engine® optimized for low-cost applications. It incorporates a high-performance Blackmer® voltage-controlled amplifier (VCA) and log-responding RMS-level sensor. The VCA and RMS detectors are pre-trimmed at the wafer stage to deliver low distortion without further adjustment. It is aimed at line-operated audio applications such as compressor/limiters, gates, and other dynamic processors. The part normally operates from a split supply voltage up to ±16Vdc, drawing only 3.5mA at ±15V. This IC also works at supply voltages as low as ±4.5V, making it useful in some battery-operated products as well. It is used in applications such as compressors and limiters, gates & expanders, AGCs, line-operated dynamics processors, De-Essers, duckers, mixers, level indicators, and companding noise reduction systems.

• Pre-trimmed Blackmer® VCA & RMS-level detector
• Positive supply voltage range from +4.5V to +16V
• Supply current is 3.5mA typical at (VCC=+15V, VEE= -15V)
• VCA gain range is +60dB maximum
• Gain-control tempco is +0.33%/°C typical at (ref TCHIP = 27°C)
• Output noise is -95dBV maximum at (22Hz to 22KHz, RIN=ROUT=20Kohm)
• Total harmonic distortion is 0.15% maximum at (VIN= -5dBV, 1KHz, EC+ = EC- = 0V)
• Capacitive load is 150pF maximum
• Load resistance is 2Kohm minimum at (-250mV <lt/> VOUTRMS<lt/> +250mV)
• Operating temperature range from -40°C to +85°C, 16-pin QSOP package