The THAT2252 is a Blackmer® Voltage Controlled Amplifier (VCA) integrated circuit. Manufactured by THAT Corporation, it's a high-performance analog signal processing component known for its low distortion and wide dynamic range. The THAT2252 is commonly used in professional audio equipment and other applications requiring precise gain control.

Applications:

• Professional audio mixing consoles
• Compressors and limiters
• Expanders and gates
• Automatic gain control (AGC) circuits
• Noise reduction systems
• Voltage-controlled filters (VCFs)
• Synthesizers

Features:

• Low THD+N (Total Harmonic Distortion + Noise): Typically 0.003%
• Wide dynamic range: Typically 120 dB
• Voltage-controlled gain: Linear control law
• Single or dual supply operation
• Low control voltage feedthrough
• Wide bandwidth
• Excellent gain accuracy

Benefits:

• High Fidelity: Low distortion and noise ensure transparent signal processing, preserving the integrity of the audio signal.
• Precise Gain Control: Voltage-controlled gain allows for accurate and repeatable gain adjustments.
• Wide Dynamic Range: Handles both very quiet and very loud signals without clipping or excessive noise.
• Versatile: Suitable for a wide range of audio processing applications due to its excellent performance characteristics.
• Easy to Use: Straightforward control interface simplifies integration into existing or new designs.

The THAT2252 operates on a control voltage that linearly adjusts the gain of the audio signal passing through the VCA. This linear control law simplifies the design of gain control circuits. The device can operate on either a single or dual supply, providing flexibility in power supply design. The THAT2252 minimizes control voltage feedthrough, preventing unwanted artifacts in the audio signal. It's commonly used in applications where precise gain adjustment and high signal quality are critical.

Technical Specifications:

• THD+N: 0.003% typical
• Dynamic Range: 120 dB typical
• Control Voltage Range: -2V to +2V (typical)
• Supply Voltage: ±4.5V to ±18V (dual) or +9V to +36V (single)
• Bandwidth: 10 MHz