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YOUDA INTEGRATED CIRCUIT
YD34119A
LOW POWER AUDIO AMPLIFIER—YD34119A
DESCRIPTION
The YD34119A is a low power audio amplifier integrated circuit intended (primarily) for the telephone applications, such as in speakerphones.
FEATURES
*Wide operating supply voltage: Vcc=2~6V; *Low quiescent supply current (Icc=2.7mA, typ.); *Medium output power Po=250mW at Vcc=6V, RL=32Ω, THD=10%; *Load impedance range (8Ωto 100Ω); *Low distortion; *Mute function (Icc=65μA, typ.); *Minimum number of external parts required.
BLOCK DIAGRAM
8 7
4k 4k 50k
6
5
BIAS
+
_
+
_
125k 50k
1
2
3
4
WuXi YouDa Electronics Co., Ltd
Add: No.5 Xijin Road, National Hi-Tech Industrial Development Zone, Wuxi Jiangsu China Tel: 86-510-85205117 86-510-85205106 Fax: 86-510-85205110 Website: www.e-youda.com SHENZHEN OFFICE Tel: 86-755-83740369 Fax: 86-755-83741418 Ver 5.0 1 of 4 2006-06-28
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YOUDA INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATINGS
PARAMETER Supply Voltage Peak Output Current Maximum Input/Output Voltage Junction Temperature (Tamb=25℃) VALUE 8.0 ±250 -1.0~Vcc+1.0 -55~+140 (Tamb=25℃) TYP 4.2 32 100 0 0 -20 30
YD34119A
SYMBOL Vcc Iop Vi/Vout Tj
UNIT V mA V ℃
RECOMMENDED OPERATION CONDITIONS
PARAMETER Supply Voltage Load Impedance Peak Load Current Differential Gain(5kHz Bandwidth) Voltage at Mute Ambient Temperature SYMBOL Vcc RL Iop Gv Vi(mute) Tamb MIN 2.0 8
MAX 6.0 100 200 46 Vcc +70
UNIT V Ω mA dB V ℃
ELECTRICAL CHARACTERISTICS
PARAMETER SYMBOL
(Tamb=25℃, Vcc=6V, Unless otherwise specified) MIN TYP 2.7 3.3 65 1.0 -30 1.15 2.65 0 Vcc -1.0 0.16 -100 @Vin Pin4 Pin2 Pin1 Low High 2.0 100 18 50 >30 150 25 220 40 175 0.8 -200 +30 MAX 4.0 5.0 100 1.25 UNIT mA mA μA V mV V V nA MΩ kΩ kΩ kΩ V V
TEST CONDITIONS Vcc=3.0V, Mute=0.8V, RL=∞ Vcc=6.0, Mute=0.8V, RL=∞ Vcc=3.0V, Mute=2.0V, RL=∞ Vcc=3.0V, RL=16Ω, Rf=75kΩ, Vcc=6.0V, RL=16Ω, Rf=75kΩ, Vcc=3.0V, Rf=75kΩ, RL =32Ω 2.0V<Vcc<6V, Iout=-75mA 2.0V<Vcc<6V, Iout=75mA
Operating Current
Iccq
Output DC Voltage Output Offset Voltage Output High Level Output Low Level Input Bias Current AC Input Resistance Equivalent Resistance Chip Disable (Pin1)Input Voltage
Vo ΔVo VOH VOL IIB Zi Ri RF R1 V1L V1H
WuXi YouDa Electronics Co., Ltd
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Website: www.e-youda.com
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YOUDA INTEGRATED CIRCUIT
PARAMETER Open Loop Gain of Amp 1 Close Loop Gain of Amp 2 Output Power Total Harmonic Distortion Gain Bandwidth Power Supply rejection Muting SYMBOL Gvo Gv Vcc=3.0V,f=1.0kHz,RL=32Ω Vcc=3.0V, RL=16Ω, THD≤10% Po Vcc=6.0V, RL=32Ω, THD≤10% THD BW RR (Vcc=4.5V, Δ=3.0V) GMUT C1=∞,C2=0.01μF C1=0.1μF,C2=0,f=1.0kHz C1=1.0μF,C2=0.01μF,f=1.0kHz Mute=2.0V, Vcc=3.0V, 1.0kHz<f<20kHz, 70 50 Vcc=6.0V, RL =32Ω, Po=125mW Vcc≥3.0V, RL =8Ω, Po=20mW 250 TEST CONDITIONS MIN 80 -0.35 55
YD34119A
TYP MAX UNIT dB 0 0.35 dB
mW 0.5 0.5 1.5 12 52 dB 1.0 % MHz dB
APPLICATION CIRCUIT
Vcc
Rf 75k AUDIO IN Ci
+
6
+
Vcc Ri Vin+
4
0.1μ 100μ
10μ 3.0k
3 +
1
VoVin4k 4k
5
SPEAKER
10μ
FC
2 +
50k
Vo+
2
125k 50k
BIAS
8
4.7μ
CD
1
GND
7
CD
WuXi YouDa Electronics Co., Ltd
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Website: www.e-youda.com
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YOUDA INTEGRATED CIRCUIT
OUTLINE DRAWING
YD34119A
WuXi YouDa Electronics Co., Ltd
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Website: www.e-youda.com
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