SGM4822
Single/Dual-Input, Fixed-Gain Microphone Amplifier with Integrated Bias
The SGM4822/SGM4825 (single-input) and SGM4823/SGM4826 (dual-input) are low noise, low power, rail-to-rail, fixed-gain microphone amplifiers with integrated bias. The SGM4822/SGM4823 support power supply voltage from 3.3V to 5.5V and the SGM4825/SGM4826 support wide power supply voltage from 2.7V to 5.5V. The devices are suitable for portable audio applications. They feature low THD+N = 0.009% in active mode, 2.6MHz bandwidth and forced shutdown mode.
The SGM4822/SGM4823 power-saving features include automatic switching between low power monitor mode and low noise active mode, and the devices also provide latched push-pull output to wake up external MCU in sleeping mode. Two inputs of the SGM4823/SGM4826 allow two microphones to be multiplexed into one output.
The devices operate over an ambient temperature range of -40℃ to +85℃.
Very Low Noise: 30nV/√Hz at 1kHz, Gain = 20dB
Very Low THD+N: 0.009%, Gain = 20dB
Wide Supply Voltage Range: 3.3V to 5.5V
Low Quiescent Current:
0.1μA in Forced Shutdown Mode
4μA in Monitor Mode at VCC = 3.3V
660μA in Active Mode
Low Noise Microphone Bias Voltage: 2.3V
Rail-to-Rail Outputs
20dB Fixed-Gain
Automatic Switching between Low Power Monitor Mode and Low Noise Active Mode
Latched Push-Pull Output to Wake Up External MCU in Sleeping Mode
-40℃ to +85℃ Operating Temperature Range
Laptop Computers
Smart Phones
Digital Cameras
VCRs
Part Number | Status | Package | Pins | Pd-Free | RoHS | REACH | Green | MSL Rating | Operating Temperature Range | Material Content | Reliability Report | Unit Resale Price* (Volume Range: in USD) | Lead Time** (Volume Range: Days) | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
SGM4822B-23YN8G/TR | Active | SOT-23-8 | 8 | Yes | Yes | Yes | Yes | MSL3 | -40℃ to +85℃ | View | View | 1-24 units : $0.875/unit 25-99 units : $0.75/unit 100-249 units : $0.625/unit 250-499 units : $0.5/unit 500-999 units : $0.4375/unit 1000-9999 units : $0.325/unit | 3K-9K : 14 days 10K-99K : 35 days 100K-999K : 70 days 1000K and above : 98 days |
* The unit resale price is for reference purposes only. Please contact our distributors for a formal quotation.
** The lead time provided is for reference purposes only and is subject to change based on different circumstances.
