UNISONIC TECHNOLOGIES CO., LTD
MC34119
LOW POWER AUDIO
AMPLIFIER
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
FEATURES
* Wide operating supply voltage: V
CC
=2V~16V
* Low quiescent supply current (I
CC
=2.7mA, typ)
* Medium power output over 250mW at V
CC
=6V,
R
L
=32Ω, THD＜10%
* Load impedance range (8Ω~100Ω)
* Low total harmonic distortion (0.5% typ)
* Mute function (I
CC
=65μA, typ)
* Minimum number of external parts required
ORDERING INFORMATION
Ordering Number
Lead Free
MC34119L-D08-T
MC34119L-S08-R
MC34119L-S08-T
MC34119L-P08-R
MC34119L-P08-T
Halogen Free
MC34119G-D08-T
MC34119G-S08-R
MC34119G-S08-T
MC34119G-P08-R
MC34119G-P08-T
Package
DIP-8
SOP-8
SOP-8
TSSOP-8
TSSOP-8
Packing
Tube
Tape Reel
Tube
Tape Reel
Tube
www.unisonic.com.tw
Copyright © 2012 Unisonic Technologies Co., Ltd
1 of 8
QW-R107-038,H
MC34119
PIN CONFIGURATION
LINEAR INTEGRATED CIRCUIT
PIN DESCRIPTION
PIN NO.
1
2
3
4
5
6
7
8
PIN NAME
DESCRIPTION
This pin can be used to power down the IC to converse power, or for muting, or both. When
Mute
at a logic “LOW” (less than 0.8V), the IC is enabled for normal operation. When at a logic
“HIGH” (2V to V
CC
), the IC is disabled. If Mute is open, that is equivalent to a logic “LOW”.
Ripple
A capacitor at this pin increase power supply rejection, and affects turn-on time. This pin
Rejection can be left open if the capacitor at pin 3 is sufficient.
Analog Ground for the amplifiers. A 1μF capacitor at this pin (with a 5μF capacitor at pin 2)
Input(+) 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
Input(-)
impedance. The feedback resistor is connected between this pin and output 1.
Output 1 Amplifier output 1. The DC level is about (V
CC
~0.7V)/2.
V
CC
DC supply voltage is applied to this pin (V
CC
=2~16V).
GND
Ground pin.
Amplifier output 2. This signal is equal in amplitude, but 180°out of phase with that output 1,
Output 2
the DC level is about (Vcc~0.7V)/2.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
2 of 8
QW-R107-038,H
MC34119
BLOCK DIAGRAM
LINEAR INTEGRATED CIRCUIT
IN
-
4
Amp 1
5
OUT1
IN
+
3
8
OUT2
V
CC
6
Bias
2
RR
7
GND
1
MUTE
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
3 of 8
QW-R107-038,H
MC34119
ABSOLUTE MAXIMUM RATINGS
(T
A
=25°C )
PARAMETER
LINEAR INTEGRATED CIRCUIT
SYMBOL
RATINGS
UNIT
Supply Voltage
V
CC
-1~+18
V
±250
Output Current
I
OUT
mA
Maximum Input, Ripple Rejection, Mute Pin Voltage
V
IN
-1~+1
V
Applied Output Voltage (Output Pin When Disabled)
V
OUT
-1~+1
V
Junction Temperature
T
J
+125
°C
Operating Temperature
T
OPR
-20 ~ +85
°C
Storage Temperature
T
STG
-40 ~ +150
°C
Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
RECOMMENDED OPERATION CONDITIONS
(T
A
=25°C)
PARAMETER
Supply Voltage
Load Impedance
Peak Load Current
Differential Gain (5KHz Bandwidth)
Voltage at Mute
Ambient Temperature
SYMBOL
V
CC
Z
L
I
L(PEAK)
ΔG
V
V
I(MUTE)
Ta
RATINGS
2~16
8~100
±200
0~46
0~V
CC
-20~+70
UNIT
V
Ω
mA
dB
V
°C
ELECTRICAL CHARACTERISTICS
(V
CC
=6V, T
A
=25°C, unless otherwise specified)
PARAMETER
DC PARAMETER
Operating Current
SYMBOL
TEST CONDITIONS
V
CC
=3V, Mute=0.8V
V
CC
=16V, Mute=0.8V
V
CC
=3V, Mute=2V
R
L
=16Ω, R1=75KΩ, V
CC
=3V
R
L
=16Ω, R1=75KΩ, V
CC
=6V
R
L
=16Ω, R1=75KΩ, V
CC
=12V
V
CC
=6V, R
F
=75KΩ,R
L
=32Ω
2V<V
CC
<16V,
I
OUT
=-75mA
2V<V
CC
<16V,
I
OUT
=75mA
Pin 3
Pin 2
MIN
TYP
2.7
3.3
65
1.15
2.65
5.65
0
Vcc-1
0.16
-100
150
25
MAX UNIT
4
5
100
1.25
mA
mA
μA
V
V
V
mV
V
V
nA
KΩ
KΩ
dB
dB
mW
mW
mW
%
%
%
MHz
dB
dB
dB
dB
I
CC
1
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
Total Harmonic Distortion
(f=1KHz)
Gain Bandwidth Product
Power Supply Rejection
(V
CC
=6V,
ΔV
CC
=3V)
Muting
V
OUT
V
O(OFF)
V
OH
V
OL
I
I(BIAS)
R
EQ
G
V
1
G
V
2
P
OUT
-30
30
100
18
80
-0.35
55
250
400
-200
220
40
THD
GB
W
RR
G
V(MUTE)
f=1KHz, R
L
=32Ω
V
CC
=3V, R
L
=16Ω, THD<10%
V
CC
=6V, R
L
=32Ω, THD<10%
V
CC
=12V, R
L
=100Ω, THD<10%
V
CC
=6V, R
L
=32Ω, P
OUT
=125mW
V
CC
≥3V,
R
L
=8Ω, P
OUT
=20mW
V
CC
≥12V,
R
L
=32Ω, P
OUT
=200mW
C1=∞, C2=0.01μF
C1=0.1μF, C2=0, f=1KHz
C1=1μF, C2=5μF, f=1KHz
Mute=2V, 1KHz<f<20KHz
0
0.35
0.5
0.5
0.6
1.5
50
12
52
70
1
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
4 of 8
QW-R107-038,H
MC34119
TYPICAL CIRCUIT
LINEAR INTEGRATED CIRCUIT
VCC
0.001μF
VCC
75KΩ
MUTE
100KΩ
100KΩ
MUTE
0.01μF
6
Audio Input
0.1μF
4
0.05μF
0.05μF
5.1K
5.1K
2
5.0μF
3
UTC MC34119
1
SPEAKER
5
Audio Input
0.1μF
4
0.05μF
0.05μF
5.1K
5.1K
3
6
1
SPEAKER
5
UTC MC34119
8
2
5.0μF
7
8
7
VCC
75KΩ
VCC
6
Audio Input
3KΩ
0.1μF
3
2
VEE
-1.0V~-8.0V
4
UTC MC34119
1
SPEAKER
5
4.7KΩ
20KΩ
MUTE
8
7
20KΩ
10KΩ
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
5 of 8
QW-R107-038,H
