Features: ` Wide operating supply voltage: VCC=2V~16V
` Low quiescent supply current (ICC=2.7mA, typ)
` Medium output power (POUT=250mW at VCC=6V,
RL=32ohm, THD=10%)
` Load impedance range (8 to 100ohm)
` Low distortion
` Mute function (ICC=65A, typ)
` Minimum number of external parts requPinout
Specifications
| PARAMETER |
SYMBOL |
RATINGS |
UNIT |
| Supply Voltage |
VCC |
-1~+18 |
V |
| Output Current |
IOUT |
±250 |
mA |
| Maximum Input, Ripple Rejection, Mute Pin Voltage |
VIN |
-1~+1 |
V |
| Applied Output Voltage (Output Pin When Disabled |
VOUT |
-1~+1 |
V |
| Junction Temperature |
TJ |
+125 |
°C |
| Operating Temperature |
TOPR |
-20 ~ +85 |
°C |
| Storage Temperature |
TSTG |
-40 ~ +1 |
°C |
DescriptionThe MC34119 has the following features including (1)Wide Operating Supply Voltage Range (2.0 V to 16 V), Allows Telephone Line Powered Applications;(2)Low Quiescent Supply Current (2.7 mA Typ) for Battery Powered Applications;(3)Chip Disable Input to Power Down the IC;(4)Low PowerDown Quiescent Current (65 A Typ);(5)Drives a Wide Range of Speaker Loads (8.0 and Up);(6)Gain Adjustable from <0 dB to >46 dB for Voice Band.
The MC34119 is a low power audio amplifier intergrated circuit intended (primarily) 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.The MC34119 is available in standard 8pin DIP, SOIC package, and TSSOP package.The MC34119 is a low power audio amplifier capable of low voltage operation (VCC = 2.0 V minimum) such as that encountered in linepowered speakerphones. The circuit provides a differential output (VO1VO2) to the speaker to maximize the available voltage swing at low voltages.The differential gain is set by two external resistors. Pins FC1 and FC2 allow controlling the amount of power supply and noise rejection, as well as providing alternate inputs to the amplifiers. The CD pin permits powering down the IC for muting purposes and to conserve power.
Motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where personal injury or death may occur. Should Buyer purchase or use Motorola products for any such unintended or unauthorized application, Buyer shall indemnify and hold Motorola and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that Motorola was negligent regarding the design or manufacture of the part.
MC34119 Data Sheet
