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MAX9945 Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX9945 Datasheet(HTML) 1 Page - Maxim Integrated Products |
1 / 13 page General Description The MAX9945 operational amplifier features an excellent combination of low operating power and low input volt- age noise. In addition, MOS inputs enable the MAX9945 to feature low input bias currents and low input current noise. The device accepts a wide supply voltage range from 4.75V to 38V and draws a low 400µA quiescent cur- rent. The MAX9945 is unity-gain stable and is capable of rail-to-rail output voltage swing. The MAX9945 is ideal for portable medical and industri- al applications that require low noise analog front-ends for performance applications such as photodiode trans- impedance and chemical sensor interface circuits. The MAX9945 is available in both an 8-pin µMAX® and a space-saving, 6-pin TDFN package, and is specified over the automotive operating temperature range (-40°C to +125°C). Applications Medical Pulse Oximetry Photodiode Sensor Interface Industrial Sensors and Instrumentation Chemical Sensor Interface High-Performance Audio Line Out Active Filters and Signal Processing Features ♦ +4.75V to +38V Single-Supply Voltage Range ♦ ±2.4V to ±19V Dual-Supply Voltage Range ♦ Rail-to-Rail Output Voltage Swing ♦ 400µA Low Quiescent Current ♦ 50fA Low Input Bias Current ♦ 1fA/√√Hz Low Input Current Noise ♦ 15nV/√√Hz Low Noise ♦ 3MHz Unity-Gain Bandwidth ♦ Wide Temperature Range from -40°C to +125°C ♦ Available in Space-Saving, 6-Pin TDFN Package (3mm x 3mm) 38V, Low-Noise, MOS-Input, Low-Power Op Amp ________________________________________________________________ Maxim Integrated Products 1 19-4398; Rev 0; 2/09 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 TOP MARK MAX9945ATT+ -40°C to +125°C 6 TDFN-EP* AUE MAX9945AUA+ -40°C to +125°C 8 µMAX — + Denotes a lead(Pb)-free/RoHS-compliant package. * EP = Exposed pad. µMAX is a registered trademark of Maxim Integrated Products, Inc. IN- IN+ OUT VEE VCC PHOTODIODE SIGNAL CONDITIONING/ FILTERS ADC MAX9945 Typical Operating Circuit |
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