MC3419 [UTC]
LOW POWER AUDIO AMPLIFIER; 低功耗音频放大器
| 型号： | MC3419 |
| 厂家： | 
Unisonic Technologies |
| 描述： | LOW POWER AUDIO AMPLIFIER |
| 文件： | 总4页 (文件大小：96K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
UTC MC3419 LINEAR INTEGRATED CIRCUIT
LOW POWER AUDIO
AMPLIFIER
DESCRIPTION
SOP-8
The UTC MC3419 is a low power audio amplifier
integrated circuit, 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
DIP-8
the closed loop gain is set with two external resistors.
A chips disable pin permits powering down and/or
muting the input signal.
FEATURES
TSSOP-8
*Wide operating supply voltage: Vcc=2V~16V
*Low quiescent supply current (Icc=2.7mA, typ)
*Medium output power (Po=250mW at Vcc=6V,
RL=32ohm, THD=10%)
*Pb-free plating product number: MC3419L
*Load impedance range (8 to 100ohm)
*Low distortion
*Mute function (Icc=65µA, typ)
*Minimum number of external parts required
BLOCK DIAGRAM
1
UTC UNISONIC TECHNOLOGIES CO., LTD.
QW-R107-042,A
UTC MC3419 LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATINGS (Ta=25°C)
PARAMETER
Supply Voltage
Output Current
SYMBOL
VALUE
-1 to +18
+-250
UNIT
V
mA
V
Vcc
Io
Maximum Input, Ripple Rejection,
Mute Pin Voltage
Vi
-1 to +1
Applied Output Voltage (Output Pin
When Disabled)
Junction Temperature
Vo
Tj
-1 to +1
V
-55 to +150
°C
PIN CONFIGURATIONS
PIN
NAME
DESCRIPTION
1
Mute
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”.
2
3
Ripple
A capacitor at this pin increase power supply rejection, and affects turn-on time. This pin can be
Rejection left open if the capacitor at pin 1 is sufficient.
Input(+) Analog Ground for the amplifiers. A 1µF capacitor at this pin ( with a 5µF capacitor at pin 8)
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.
4
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.
5
6
7
8
Output 1 Amplifier 1’s output. The DC level is about (Vcc~0.7V)/2.
Vcc
GND
DC supply voltage is applied to this pin(Vcc=2~16V).
Ground pin.
Amplifier 2’s output. This signal is equal in amplitude, but 180°out of phase with that output 1,
the DC level is about (Vcc~0.7V)/2.
Output 2
RECOMMENDED OPERATION CONDITIONS (Ta=25°C)
PARAMETER
SYMBOL
VALUE
2~16
UNIT
V
Supply Voltage
Vcc
Load Impedance
ZL
8~100
+-200
Ω
Peak Load Current
IL(peak)
∆Gv
Vi(mute)
Ta
mA
dB
V
Differential Gain (5KHz Bandwidth)
Voltage at Mute
0~46
0~Vcc
-20~+70
Ambient Temperature
°C
2
UTC UNISONIC TECHNOLOGIES CO., LTD.
QW-R107-042,A
UTC MC3419 LINEAR INTEGRATED CIRCUIT
ELECTRICAL CHARACTERISTICS (Vcc=6V, Ta=25°C, unless otherwise specified)
PARAMETER
DC PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Operating Current
Icc
Vcc=3V, Mute=0.8V
Vcc=16V, Mute=0.8V
Vcc=3V, Mute=2V
2.7
3.3
65
4
5
100
mA
mA
µA
Output Voltage
Vo
RL=16Ω, R1=75KΩ
Vcc=3V
Vcc=6V
Vcc=12V
1
1.15
2.65
5.65
0
Vcc~1
0.16
-100
150
25
1.25
30
V
V
V
mV
V
V
nA
KΩ
KΩ
Output Offset Voltage
Output High Level
Output Low Level
Voo
VOH
VOL
-30
Vcc=6V, Rf=75KΩ,RL=32Ω
2V<Vcc<16V, Iout=-75mA
2V<Vcc<16V, Iout=75mA
Input Bias Current
Equivalent Resistance
Ibias
REQ
-200
220
40
Pin 1
Pin 8
100
18
AC PARAMETER
Open Loop Gain of Amp. 1
Open Loop Gain of Amp. 2
Output Power
Gv1
Gv2
Po
80
-0.35
55
250
400
dB
dB
mW
mW
mW
%
0
0.35
1
f=1KHz, RL=32Ω
Vcc=3V, RL=6Ω, THD<10%
Vcc=6V, RL=32Ω, THD<10%
Vcc=12V, RL=100Ω, THD<10%
Vcc=6V, RL=32Ω, Po=125mW
Total Harmonic Distortion
(f=1KHz)
THD
0.5
0.5
0.6
1.5
%
%
MHz
dB
Vcc<3V, RL=8Ω, Po=20mW
Vcc<12V, RL=32Ω, Po=200mW
Gain Bandwidth Product
Power Supply Rejection
(Vcc=6V, ∆Vcc=3V)
GBW
PSRR
50
70
C1=∝, C2=0.01µF
12
52
dB
dB
dB
C1=0.1µF, C2=0, f=1KHz
C1=1µF, C2=5µF, f=1KHz
Mute=2V, 1KHz<f<20KHz
Muting
Gv(mute)
3
UTC UNISONIC TECHNOLOGIES CO., LTD.
QW-R107-042,A
UTC MC3419 LINEAR INTEGRATED CIRCUIT
TYPICAL PERFORMANCE CHARACTERISTICS
UTC MC3 4 1 9
UTC MC3 4 1 9
UTC MC3 4 1 9
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.
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UTC UNISONIC TECHNOLOGIES CO., LTD.
QW-R107-042,A
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