MC34119DR2 product image


Audio Amplifiers


The  MC34119DR2   is a low power audio amplifier integrated circuit intended for telephone applications, such as in speakerphones. It provides differential speaker outputs to maximize output swing at low supply voltages (2.0 V minimum). Coupling capacitors to the speaker are not required. Open loop gain is 80 dB, and the closed loop gain is set with two external resistors. A Chip Disable pin permits powering down and/or muting the input signal.


MC34119DR2 Features


• Wide Operating Supply Voltage Range (2.0 V to 16 V),
  Allows Telephone Line Powered Applications
• Low Quiescent Supply Current (2.7 mA Typ) for Battery Powered Applications
• Chip Disable Input to Power Down the IC
• Low Power--Down Quiescent Current (65 μA Typ)
• Drives a Wide Range of Speaker Loads (8.0 Ω and Up)
• Output Power Exceeds 250 mW with 32 Ω Speaker
• Low Total Harmonic Distortion (0.5% Typ)
• Gain Adjustable from <0 dB to >46 dB for Voice Band
• Requires Few External Components
• Pb-Free Packaging Designated by Suffix Code EF

TypeClass AB
Output Type1-Channel (Mono)
Max Output Power x Channels @ Load400mW x 1 @ 100 Ohm
Voltage - Supply2 V ~ 16 V, ±1 V ~ 8 V
Mounting TypeSurface Mount
Supplier Device Package8-SO
Package / Case8-SOIC (0.154", 3.90mm Width)
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