AMIS-14935 Amplifier Datasheet
|Total Page||9 Pages|
AMIS-14935 Audio Amplifier
The AMIS-14935 (former MSC-LX1792) offers a patent
pending, low-voltage, low-power and high efficiency
amplifier for driving a high impedance speaker such as a
hearing aid receiver or a headset. The AMIS-14935 consists
of a pre-amplifier followed by a fixed gain class D amplifier.
• Low Operating Current: 120µA Typical
• Low Operating Voltage: 0.9V minimum
• Gain Set by External Resistors
• Hearing aid applications
• High impedance speaker/transducer applications
The input resistor and feedback resistor is external in the
AMIS-14935 making it possible to set the gain arbitrarily, up
to approximately 40dB. The feedback resistor can also be
potentiometer to facilitate volume control.
• 3 output switch resistance settings: 48, 24 & 16Ω
• 5µVrms Input Referred Noise
Important: For the most current data, consult AMI
Semiconductor’s website: http://www.amis.com.
Package Order Info
TJ (°C): 10…15
J: Ceramic Dip 14-Pin
NQFP: Plastic MLPM 8-Pin
BD: Bare Die
Note for hearing aid applications are covered by Knowles patents numbers US
4,592,087 & 4,689,819: AMI Semiconductor policy is not to sell the AMIS-14935
into hearing aid applications unless a patent license exist between customer
and Knowles Corporation. Please contact AMIS for assistance with this.
AMIS-14935 Audio Amplifier
Absolute Maxium Ratings
Input Logic Supply Voltage (VDD) -0.3V to +3.0V
Operating Temperature Range 10°C to 55°C
Note: Exceeding these ratings could cause damage to
the device. All voltages are with respect to Ground.
Currents are positive into, negative out of specified
Package Pin Out
Functional Pin Description
14 Pin J
Pin No Description
8 Supply Voltage
5 Analog Audio Input
7 Positive Output Voltage
2 Negative Output Voltage
6 Pre-Amplifier Output
3 Output Resistance Select. See Settings table below for selections.
|Features||www.DataSheet4U.com AMIS-14935 Audio Am plifier Description The AMIS-14935 (for mer MSC-LX1792) offers a patent pending , low-voltage, low-power and high effic iency amplifier for driving a high impe dance speaker such as a hearing aid rec eiver or a headset. The AMIS-14935 cons ists of a pre-amplifier followed by a f ixed gain class D amplifier. The input resistor and feedback resistor is exter nal in the AMIS-14935 making it possibl e to set the gain arbitrarily, up to ap proximately 40dB. The feedback resistor can also be potentiometer to facilitat e volume control. Key Features • Low Operating Current: 120µA Typical • Low Operating Voltage: 0.9V minimum • Gain Set by External Resistors • 3 o utput switch resistance settings: 48, 2 4 & 16Ω • 5µVrms Input Referred No ise Applications • Hearing aid appli cations • High impedance speaker/tran sducer applications Important: For the most current data, consult AMI Semicond uctor’s website: http://www.amis.com. Product Highlight Package Order Info TJ (.|
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