Our single-chip audio dynamics processors, dubbed “THAT Analog Engines®,” combine in one IC all the active circuitry needed to construct a wide range of dynamics processors. Each of the 43xx series includes a high-performance, exponentially controlled Blackmer® voltage controlled amplifier (VCA) and a log-responding RMS-level sensor. The 4320 includes three general-purpose opamps allowing more complex signal processing.
THAT4305 – A low-cost, basic compressor/ limiter/ expander system for dual supply voltages.
THAT4320 – A versatile compressor/ limiter/ expander system for single supply voltages optimized for low-voltage, low-power operation.
THAT4315 – A low-cost basic compressor/ limiter/ expander system for single supply voltages designed for low-voltage, low-power operation.
THAT4316 – A very low-voltage, low-power basic compressor/ limiter/ expander system for single supply voltages.
Analog Engine Selector
For a printable PDF version of this guide follow this link: THAT Analog Engine Selector
| THAT 4305 | THAT 4320 | THAT 4315 | THAT 4316 | |
|
|
Low-Cost Analog Engine |
Low-Voltage Low-Power Analog Engine |
Low-Voltage Low-Cost Analog Engine |
Very Low-Voltage Analog Engine |
| Supply voltage | ±4.5 ~ ±16 V | 4.5 ~ 16 V | 4.5 ~ 16 V | 2.7 ~ 5.5 V |
| Supply type | Dual | Single | Single | Single |
| Supply current | 3.5 mA | 3.7 mA | 1.6 mA | 1.2 mA |
| Opamps included |
No | Yes | No | No |
| Cost | Low | Moderate | Low | Low |
| VCA THD | ~ 0.07 % | ~ 0.05 % | ~ 0.07 % | ~ 0.07 % |
| Adjustable symmetry |
No | No | No | No |
| VCA control ports |
2 (+/-) | 1 (+) | 2 (+/-) | 2 (+/-) |
| VCA gain range | ± 60 dB | -100 ~ +40 dB | ± 60 dB | ± 50 dB |
| Packages | QSOP-16 | QSOP-28 QFN-24 |
QSOP-16 | QSOP-16 |
| Datasheet link | 4305 Datasheet |
4320 Datasheet |
4315 Datasheet |
4316 Datasheet |