4320N24-U

4320N24-U is a pre-trimmed low-voltage low-power Analog Engine® dynamics processor IC. It is a single-chip Analog Engine® optimized for low-voltage, low-power operation. Incorporating a high-performance voltage-controlled amplifier (VCA), RMS-level sensor, and four opamps, the surface mount part is aimed at battery-operated audio applications such as wireless microphones, wireless instruments, and in-ear monitors. It operates from a single supply voltage down to +4.5Vdc, drawing only 3.7mA. This IC also works at supply voltages up to 16Vdc, making it useful in line-operated products as well. The VCA is pre-trimmed at the wafer stage to deliver low distortion without further adjustment. And, one opamp is quiet enough to be used as a microphone preamp. It is used in applications such as companding noise reduction, wireless microphones, wireless instrument packs, wireless in-ear monitors, battery-operated dynamics processors, compressors, limiters, AGCs, De-essers.

• Pre-trimmed VCA and RMS detector, on board PTAT reference, four opamps
• Positive supply voltage range from +4.5V to +16V
• Supply current is 3.7mA typical at (VCC=+5V)
• Gain-control tempco is +0.33%/°C typical
• Output noise is -98dBV typical at (0dB gain, 22Hz to 22KHz, RIN=ROUT=20Kohm)
• Total harmonic distortion is 0.05% typ at (VIN= -5dBV, 1KHz, 0V at +IN of OA2)
• Timing current is 7.5µA typical, load resistance is 2Kohm minimum
• Capacitive load is 150pF typical, input bias current is 150nA typical
• Gain bandwidth product is 13MHz typ at (f = 50KHz), slew rate is 4V/μs typ at (G = +10, CL = 100pF)
• Operating temperature range from -40°C to +85°C, 24-pin QFN package