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MAX4467EKA+T Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX4467EKA+T Datasheet(HTML) 1 Page - Maxim Integrated Products |
1 / 12 page General Description The MAX4465–MAX4469 are micropower op amps opti- mized for use as microphone preamplifiers. They pro- vide the ideal combination of an optimized gain bandwidth product vs. supply current, and low voltage operation in ultra-small packages. The MAX4465/ MAX4467/MAX4469 are unity-gain stable and deliver a 200kHz gain bandwidth from only 24µA of supply cur- rent. The MAX4466/MAX4468 are decompensated for a minimum stable gain of +5V/V and provide a 600kHz gain bandwidth product. In addition, these amplifiers feature Rail-to-Rail® outputs, high AVOL, plus excellent power-supply rejection and common-mode rejection ratios for operation in noisy environments. The MAX4467/MAX4468 include a complete shutdown mode. In shutdown, the amplifiers’ supply current is reduced to 5nA and the bias current to the external microphone is cut off for ultimate power savings. The single MAX4465/MAX4466 are offered in the ultra-small 5-pin SC70 package, while the single with shutdown MAX4467/MAX4468 and dual MAX4469 are available in the space-saving 8-pin SOT23 package. Applications Microphone Preamplifiers Hearing Aids Cellular Phones Voice-Recognition Systems Digital Dictation Devices Headsets Portable Computing Features o +2.4V to +5.5V Supply Voltage Operation o Versions with 5nA Complete Shutdown Available (MAX4467/MAX4468) o Excellent Power-Supply Rejection Ratio: 112dB o Excellent Common-Mode Rejection Ratio: 126dB o High AVOL: 125dB (RL = 100kΩ) o Rail-to-Rail Outputs o Low 24µA Quiescent Supply Current o Gain Bandwidth Product: 200kHz (MAX4465/MAX4467/MAX4469) 600kHz AV ≥ 5 (MAX4466/MAX4468) o Available in Space-Saving Packages 5-Pin SC70 (MAX4465/MAX4466) 8-Pin SOT23 (MAX4467/MAX4468/MAX4469) Low-Cost, Micropower, SC70/SOT23-8, Microphone Preamplifiers with Complete Shutdown 19-1950; Rev 2; 6/12 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. Ordering Information PART TEMP RANGE PIN-PACKAGE MAX4465EXK+T -40°C to +85°C 5 SC70 MAX4465EUK+T -40°C to +85°C 5 SOT23 MAX4466EXK+T -40°C to +85°C 5 SC70 MAX4466EUK+T -40°C to +85°C 5 SOT23 Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd. Ordering Information continued at end of data sheet. TOP VIEW GND OUT IN- 1 + 5 VCC IN+ MAX4465 MAX4466 SC70/SOT23 2 3 4 Pin Configurations Typical Operating Circuit MAX4467 MAX4468 GND MICROPHONE CAPSULE MAX4467/MAX4468 TYPICAL OPERATING CIRCUIT WITH COMPLETE SHUTDOWN RBIAS RFB VCC OUT IN+ IN- SHDN CBIAS RBIAS RDC MIC_BIAS RIN CIN CBYPASS RDC Pin Configurations continued at end of data sheet. + Denotes a lead(Pb)-free/RoHS-compliant package. |
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