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UNISONIC TECHNOLOGIES CO., LTD MC34119
LOW POWER AUDIO AMPLIFIER
SOP-8 DESCRIPTION
The UTC MC34119 is a low power audio amplifier IC intended for the telephone applications, such as in speakerphones. It provides differential speaker outputs to maximize output swing at low supply voltages. Coupling capacitor to the speaker is not required. Open loop gain is 80dB, and the closed loop gain is set with two external resistors. The Mute pin permits powering down and/or muting the input signal.
LINEAR INTEGRATED CIRCUIT
DIP-8
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 required
TSSOP-8
*Pb-free plating product number:MC34119L
ORDERING INFORMATION
Ordering Number Normal Lead Free Plating MC34119-D08-T MC34119L-D08-T MC34119-P08-R MC34119L-P08-R MC34119-P08-T MC34119L-P08-T MC34119-S08-R MC34119L-S08-R MC34119-S08-T MC34119L-S08-T Package DIP-8 TSSOP-8 TSSOP-8 SOP-8 SOP-8 Packing Tube Tape Reel Tube Tape Reel Tube
www.unisonic.com.tw Copyright (c) 2005 Unisonic Technologies Co., Ltd
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PIN CONFIGURATION
LINEAR INTEGRATED CIRCUIT
MUTE
1
8
OUT2
RR IN +
2
7
GND
3
6
VCC
IN
4
5
OUT1
PIN 1
NAME Mute Ripple Rejection Input(+)
2
3
4 5 6 7 8
Input(-) Output 1 Vcc GND Output 2
DESCRIPTION This pin can be used to power down the IC to converse power, or for muting, or both. When at a logic "LOW" (less than 0.8V), the IC is enabled for normal operation. When at a logic "HIGH" (2V to Vcc), the IC is disabled. If Mute is open, that is equivalent to a logic "LOW". A capacitor at this pin increase power supply rejection, and affects turn-on time. This pin can be left open if the capacitor at pin 3 is sufficient. Analog Ground for the amplifiers. A 1F capacitor at this pin ( with a 5F capacitor at pin 2) provides 52dB( typ) of power supply rejection. Turn-on time of the circuit is affected by the capacitor on this pin. This pin can be used as an alternative input. Amplifier input. The input capacitor and resistor set low frequency roll-off and input impedance. The feedback resistor is connected between this pin and output 1. Amplifier output 1. The DC level is about (Vcc~0.7V)/2. DC supply voltage is applied to this pin(Vcc=2~16V). Ground pin. Amplifier output 2. This signal is equal in amplitude, but 180out of phase with that output 1, the DC level is about (Vcc~0.7V)/2.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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BLOCK DIAGRAM
LINEAR INTEGRATED CIRCUIT
IN
+
Amp 1
OUT1
IN
OUT2
Vcc
Bias
MUTE
RR
GND
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www.unisonic.com.tw
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ABSOLUTE MAXIMUM RATINGS (Ta=25C )
LINEAR INTEGRATED CIRCUIT
PARAMETER SYMBOL RATINGS UNIT Supply Voltage VCC -1~+18 V 250 Output Current IOUT 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 ~ +150 C Note: Absolute maximum ratings are those values beyond which the device which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied.
RECOMMENDED OPERATION CONDITIONS (Ta=25C)
PARAMETER Supply Voltage Load Impedance Peak Load Current Differential Gain (5KHz Bandwidth) Voltage at Mute Ambient Temperature SYMBOL VCC ZL IL(PEAK) Gv VI(MUTE) Ta RATINGS 2~16 8~100 200 0~46 0~VCC -20~+70 UNIT V mA dB V C
ELECTRICAL CHARACTERISTICS (VCC=6V, Ta=25C, unless otherwise specified)
PARAMETER DC PARAMETER Operating Current SYMBOL TEST CONDITIONS VCC=3V, Mute=0.8V VCC=16V, Mute=0.8V VCC=3V, Mute=2V RL=16, R1=75K, VCC=3V RL=16, R1=75K, VCC=6V RL=16, R1=75K, VCC=12V VCC=6V, RF=75K,RL=32 2VICC
Output Voltage Output Offset Voltage Output High Level Output Low Level Input Bias Current Equivalent Resistance AC PARAMETER Open Loop Gain of Amp. 1 Open Loop Gain of Amp. 2 Output Power
VOUT VO(OFF) VOH VOL II(BIAS) REQ
2.7 3.3 65 1 1.15 2.65 5.65 -30 0 Vcc~1 0.16 -100 100 150 18 25 80 -0.35 55 250 400
30
-200 220 40
Gv1 Gv2 POUT
Total Harmonic Distortion (f=1KHz) Gain Bandwidth Product Power Supply Rejection (VCC=6V, VCC=3V) Muting
THD GBW RR Gv(MUTE)
f=1KHz, RL=32 VCC=3V, RL=6, THD<10% VCC=6V, RL=32, THD<10% VCC=12V, RL=100, THD<10% VCC=6V, RL=32, POUT=125mW VCC<3V, RL=8, POUT=20mW VCC<12V, RL=32, POUT=200mW C1=, C2=0.01F C1=0.1F, C2=0, f=1KHz C1=1F, C2=5F, f=1KHz Mute=2V, 1KHz0
0.35
0.5 0.5 0.6 1.5 50 12 52 70
1
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www.unisonic.com.tw
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TYPICAL CIRCUIT
LINEAR INTEGRATED CIRCUIT
SPEAKER
SPEAKER
4.7K
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
20K
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SPEAKER
MC34119
TYPICAL CHARACTERISTICS
Differential Gain Versus Frequency 40 Total Harmonic Distortion, THD (%) Rf = 150k, Ri = 6.0k 32 Differential Gain (dB) 10
LINEAR INTEGRATED CIRCUIT
Distortion Versus Power (f = 1, 3.0kHz, AVD = 12dB) VCC = 3.0V RL = 32 8.0 VCC = 3.0V RL = 16
24
Rf = 75k, Ri = 3.0k
6.0
16
Input
Rf 0.1 Ri + #1 VO2 VO VO1
4.0 VCC = 6.0V RL = 16,32 VCC = 12V,16V RL = 16,32
8
#2
2.0
0 100
0 1.0k Frequency, f (Hz) 10k 20k 0 100 200 300 400 500 Pout, Output Power (mW)
Device Dissipation, 16 Load 1200 VCC = 16V 1000 Device Dissipation (mW) VCC = 12V Device Dissipation (mW) 1000 800 1200
Device Dissipation, 32 Load VCC = 12V
VCC = 16V
800 600 VCC = 6.0V
600 400
400 VCC = 3.0V
VCC = 6.0V VCC = 3.0V
200 0 0
200
0 100 200 Load Power (mW) 300 400 0 100 200 300 400 500 Load Power (mW)
Distortion Versus Power (f = 1.0kHz, AVD = 34dB) 10 THD, Total Harmonic Distortion (%) THD, Total Harmonic Distortion (%) VCC = 3.0V RL = 16 VCC = 3.0V RL = 32 6.0 VCC = 6.0V RL = 16 VCC =12V, 16V RL = 16 10
Distortion Versus Power (f = 3.0kHz, AVD = 34dB) VCC = 3.0V RL = 16 8.0 VCC = 3.0V RL = 16 6.0 VCC =6V RL = 16,32
8.0
VCC = 6.0V RL = 32
4.0
VCC = 6.0V RL = 16
4.0
2.0
VCC = 12V,16V RL = 32
VCC =12V,16V RL = 16,32
2.0
0 0 100 200 300 400 500 Output Power, POUT (mW)
0 0 100 200 300 400 500 Pout, Output Power (mW)
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www.unisonic.com.tw
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TYPICAL CHARACTERISTICS(Cont.)
Power Supply Current 4.0 ICC , Power Supply Current (mA) RL = CD = 0 Output 20mV/DIV
LINEAR INTEGRATED CIRCUIT
Small Signal Response
3.0
2.0
VCC = CD 0 0 2.0 4.0 6.0 8.0 10 12 14 16 Supply Voltage, VCC (V)
Input 1.0mV/DIV
1.0
20s/DIV
Large Signal Response 1.5
VCC-VOH @ VO1, VO2 Versus Load Current TA = 25C
Output 1.0V/DIV
1.4 1.3 VCC-VOH(V) 1.2 2.0 VCC 16V 1.1 1.0
Input 80mV/DIV
0.9 0.8 20s/DIV 0 40 80 120 160 200 ILOAD, Load Current (mA)
Output Low Level, VOL (V)
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
ICD (A)
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LINEAR INTEGRATED CIRCUIT
UTC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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