(China (Mainland))
Product Summary
The MAX9814ETD+T is a low-cost, high-quality microphone amplifier with automatic gain control (AGC)and lownoise microphone bias. The device features a low-noise preamplifier, variable gain amplifier (VGA), output amplifier, microphone-bias-voltage generator and AGC control circuitry. A trilevel digital input programs the output amplifier gain. An external resistive divider controls the AGC threshold and a single capacitor programs the attack/release times.
Parametrics
MAX9814ETD+T absolute maximum ratings: (1)VDD to GND:-0.3V to +6V; (2)all other pins to GND: -0.3V to (VDD + 0.3V); (3)output short-circuit duration: continuous; (4)continuous current (MICOUT, MICBIAS): ±100mA; (5)all other pins: ±20mA; (6)continuous power dissipation (TA = +70℃)14-pin TDFN-EP (derate 16.7mW/℃ above +70℃): 1481.5mW; (7)operating temperature range: -40℃ to +85℃; (8)junction temperature: +150℃; (9)lead temperature (soldering, 10s): +300℃; (10)bump temperature (soldering)reflow: +235℃.
Features
MAX9814ETD+T features: (1)automatic gain control (AGC); (2)three gain settings (40dB, 50dB, 60dB); (3)programmable attack time; (4)programmable attack and release ratio; (5)2.7V to 5.5V supply voltage range; (6)low input-referred noise density of 30nV/√Hz; (7)low THD: 0.04% (typ); (8)low-power shutdown mode; (9)internal low-noise microphone bias, 2V; (10)available in the space-saving, 14-pin TDFN (3mm x 3mm)package; (11)-40°C to +85°C extended temperature range.
Diagrams
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 MAX9814ETD+T |
Maxim Integrated Products |
Microphone Preamplifiers Microphone Amplifier |
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MAX9000 |
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MAX9000ESA+T |
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