Microphone Preamps
THAT Corporation produces a range of specifically designed ICs for high performance microphones as used in live sound, broadcasting, recording and conference systems. We recommended the THAT1583 and THAT1580, which are compatible with the range of gain control ICs where remote or automatic control is required.
The 626x series is an all-in-one solution, ideal for portable or USB powered products where low power is a key requirement, as just 30mW of power is needed. These parts are also very low noise (-126dBu EIN) and are digitally controllable.
Very low noise op-amps are also popular for microphone preamplifiers. The NJM2122 and NJM8830 are a good choice.
Recommended parts:
NJM2122M-TE1Dual Ultra Low Noise
- Ultra low noise - 1nV/Hz
- Low supply voltage range
- Low saturation output voltage
THAT6261N48-UDual Digitally Controlled Mic Pre with 1dB Step Size
- Fine Gain Control 1dB steps
- Two Low Noise Differential Mic Preamps
- Two Differential ADC Driver Outputs
- Individually controlled Standby Mode
THAT1580N16-U3CSDigitally-controlled Analog Preamplifer
- Ultra Low noise: -134.8dBu @60dB gain - unweighted
- Low THD+N: 0.0003% from 3dB to 30dB gain
- Designed to complement THAT's Digital Controllers
THAT1583N16-U3CSDigitally-controlled Analog Preamplifer
- Low noise: -128.9dBu @60dB gain
- Low THD+N: 0.001% at up to 40dB gain
- Designed to complement THAT's Digital Controllers
