MAX9814ETD+T
| Parameters | |
|---|---|
| Series | - |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| RoHS Status | ROHS3 Compliant |
| Package / Case | 14-WFDFN Exposed Pad |
| Mfr | Analog Devices Inc./Maxim Integrated |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Type | Class AB |
| Output Type | 1-Channel (Mono) |
| Supplier Device Package | 14-TDFN (3x3) |
| Voltage - Supply | 2.7V ~ 5.5V |
| Max Output Power x Channels @ Load | - |
| Features | AGC, Microphone, Shutdown |
| Package | Tape & Reel (TR) |
| Product Status | Active |
| Base Product Number | MAX9814 |
| REACH Status | REACH Unaffected |
| Standard Package | 2,500 |
| ECCN | EAR99 |
| HTSUS | 8542.33.0001 |
MAX9814ETD+T Low-power Amplifier IC 1-Channel (Mono) Class AB
The MAX9814ETD+T is a high-performance, low-power microphone amplifier with automatic gain control (AGC) and integrated low-noise microphone bias, manufactured by ADI. This specialized IC is designed to deliver clean, conditioned audio signals from electret condenser microphones (ECMs) in demanding acoustic environments. Housed in a compact 14-pin TDFN package, it integrates a complete audio front-end solution, featuring a preamplifier, variable gain amplifier, output amplifier, and AGC/limiter circuitry. It is particularly optimized for applications where sound levels vary widely, such as voice recognition systems, conferencing equipment, camcorders, and portable recording devices, ensuring consistent output levels and preventing signal clipping.
MAX9814ETD+T amplifier Typical Applications
The MAX9814ETD+T excels in consumer electronics and industrial systems requiring robust audio capture, including smartphones, tablets, Bluetooth headsets, security/voice-activated systems, and hearing aids. Its integrated AGC significantly simplifies design by automatically managing volume fluctuations, improving the signal-to-noise ratio for downstream processors, and ensuring optimal recording levels without manual adjustment. This leads to clearer audio capture, reduced parts count, lower overall system power consumption, and faster time-to-market for products needing reliable voice input in noisy or variable environments.
Alternative Low-Noise Amplifier IC Models
● SSM2167-1RMZ (Analog Devices): A low-voltage microphone preamplifier with variable compression (AGC), known for its excellent noise performance and simple single-resistor gain control for portable audio gear.
● TS472IQ4T (STMicroelectronics): A high-fidelity, low-noise op-amp specifically designed for microphone preamplification, offering rail-to-rail input/output and a wide gain-bandwidth product for precise audio designs.
● LMV1012 (Texas Instruments): An ultra-low-noise digital microphone amplifier with integrated AGC, designed specifically for analog MEMS microphones in always-on voice-interface applications.
