PA4867 [UMC]
DUAL 2.1W AUDIO AMPLIFIER PLUS STEREO HEADPHONE FUNCTION; 双2.1W音频放大器加上立体声耳机功能
| 型号： | PA4867 |
| 厂家： | 
UMC CORPORATION |
| 描述： | DUAL 2.1W AUDIO AMPLIFIER PLUS STEREO HEADPHONE FUNCTION |
| 文件： | 总7页 (文件大小：235K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
UNISONIC TECHNOLOGIES CO., LTD
PA4867
CMOS IC
DUAL 2.1W AUDIO AMPLIFIER
PLUS STEREO HEADPHONE
FUNCTION
DESCRIPTION
The UTC PA4867 is a stereo audio power amplifier capable of
delivering typically 2.1W to a 4Ω load or 2.4W to a 3Ω load each
channel with less than 1.0% THD+N using a 5V power supply. UTC
PA4867 has a new circuit topolopy which can eliminate headphone
output coupling capacitors. And an internal input MUX allows two
sets of stereo inputs to the amplifier.
The UTC PA4867 has integrated depop circuitry that virtually
eliminates transients that cause noise in the speakers during power
up and when using the shutdown modes.
*Pb-free plating product number: PA4867L
FEATURES
* Operating voltage range VDD=2V~5.5V
* Output power:
-2.4W(typ.)@5V into 3Ω with 1% THD+N max (1kHz)
-2.1W(typ.)@5V into 4Ω with 1% THD+N max (1kHz)
* Eliminates SE-mode output coupling capacitors
* Shutdown mode available
* click and pop reduction circuitry
* Unity-gain stable
* Thermal-shutdown Protection
* Input MUX control
* SE/BTL mode available
ORDERING INFORMATION
Order Number
Package
Packing
Normal
Lead Free Plating
PA4867L-N20-R
PA4867L-N20-T
PA4867L-P20-R
PA4867L-P20-T
PA4867-N20-R
PA4867-N20-T
PA4867-P20-R
PA4867-P20-T
HTSSOP-20
HTSSOP-20
TSSOP-20
TSSOP-20
Tape Reel
Tube
Tape Reel
Tube
www.unisonic.com.tw
Copyright © 2007 Unisonic Technologies Co., Ltd
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PA4867
CMOS IC
PIN CONFIGURATION
PIN DESCRIPTION
PIN NO.
PIN NAME
SHUTDOWN
GND
I/O
I
PIN DESCRIPTION
1
Entire IC into the shutdown mode when this pin connected to the VDD
Ground
2, 7, 19
3
+OUTA
VDD
O
Channel A + output in BTL mode, high impedance in SE mode
Supply voltage
4, 17
5
-OUTA
-INA
O
I
Channel A - output in BTL mode, + output in SE mode
Inverting input of channel A
6
8
+INA
I
Non-inverting input of channel A, connected to BYPASS pin inside the IC
Inverting input of channel A2
9
-INA2
I
10
11
12
13
14
15
16
18
20
MUX CTRL
-INB2
I
I
Inverting input of channel B2
NC
No Connection
+INB
Non-inverting input of channel B, connected to BYPASS pin inside the IC
Internal mid-supply bias reference bypassing
Inverting input of channel B
BYPASS
-INB
I
-OUTB
+OUTB
HP-IN
O
O
I
Channel B - output in BTL mode, + output in SE mode
Channel B + output in BTL mode, high impedance in SE mode
Output mode select, connected to the VDD for SE mode or GND for BTL mode
UNISONIC TECHNOLOGIES CO., LTD
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PA4867
CMOS IC
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
RATINGS
6.0
UNIT
V
Supply Voltage
Input Voltage
-0.3 ~ VDD+0.3
Internally Limited
150
V
Power Dissipation
Junction Temperature
Operating Temperature
Storage Temperature
PD
TJ
℃
℃
℃
TOPR
TSTG
-40 ~ +85
-65 ~ +150
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.
ELECTRICAL CHARACTERISTICS
The following specifications apply for VDD= 5V unless otherwise specified. Limits apply for TA= 25℃.
PARAMETER
FOR ENTIRE IC
SYMBOL
TEST CONDITIONS
MIN
TYP MAX UNIT
Supply Voltage
VDD
IDD
ISD
2
5.5
15
6
V
VIN=0V, IOUT=0A, HP-IN=0V
VIN=0V, IOUT=0A, HP-IN=4V
VDD applied to the SHUTDOWN pin
7.5
3.0
0.7
mA
mA
µA
Quiescent Power Supply Current
Shutdown Current
2
FOR BRIDGED-MODE OPERATION
Output Offset Voltage
VO(OFF) VIN=0V
5
50
mV
W
RL = 3Ω
2.2
RL = 4Ω
1.9
1.1
3.0
2.6
1.5
THD=1%, f=1kHz
W
RL = 8Ω
RL = 3Ω
RL = 4Ω
RL = 8Ω
1.0
W
W
Output Power
POUT
THD+N=10%, f=1kHz
W
W
W
%
%
THD+N=1%, f=1kHz, RL=32Ω
20Hz ≤ f ≤ 20kHz,
0.34
0.3
RL =4Ω, POUT =2W
RL =8Ω, POUT =1W
Total Harmonic Distortion+Noise
Power Supply Rejection Ratio
THD+N
PSRR
AVD=2
0.3
V
DD=5V, VRIPPLE=200mVRMS, RL=8Ω,
67
dB
CB=2.2µF
Channel Separation
XTALK f=1kHz, CB=2.2µF
80
97
dB
dB
Signal To Noise Ratio
SNR VDD=5V, POUT=1.1W, RL=8Ω
FOR SINGLE-ENDED OPERATION
Output Offset Voltage
VO(OFF) VIN=0V
5
50
mV
THD = 0.5%, f = 1kHz, RL = 32Ω
THD+N = 1%, f = 1kHz, RL = 8Ω
THD+N = 1%, f = 1kHz, RL = 16Ω
75
85
mW
180
165
88
mW
Output Power
POUT
THD+N = 1%, f = 1kHz, RL = 32Ω
THD+N = 10%, f = 1kHz, RL = 16Ω
THD+N = 10%, f = 1kHz, RL = 32Ω
208
114
mW
VP-P
Output Voltage Swing
VOUT THD = 0.05%,RL = 5kΩ
1
AV=-1, POUT=75mW
THD+N
Total Harmonic Distortion+Noise
0.2
%
20Hz≤f≤20kHz, RL=32Ω
CB=1.0µF, VRIPPLE=200mVRMS
f=1kHz
Power Supply Rejection Ratio
PSRR
52
dB
Channel Separation
Signal To Noise Ratio
XTALK f=1kHz, CB=2.2µF
60
95
dB
dB
SNR VDD=5V, POUT=340mW, RL=8Ω
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PA4867
CMOS IC
TYPICAL APPLICATION CIRCUIT
Rf
20KΩ
Rf
20KΩ
VDD
CS
0.1µF
CI
0.33µF
Audio
Input
4, 17
RI
-IN A2
9
2, 7, 19
GND
M
U
X
20KΩ
-OUT A
RI
5
3
6
7
-IN A1
+IN A
AmpAM
20KΩ
20KΩ
20KΩ
CI
0.33µF
Audio
Input
20KΩ
Ring
Control Pin
10
1
MUX CTRL
Bias
Control
Shutdown
HP-IN
Voltage
Bypass
And
De-pop
Noise
AmpAS
20
14
CB
2.2µF
+OUT A
Bypass
Sleeve
11 -IN B2
Control Pin
Tip
M
U
X
Audio
Input
CI
0.33µF
15
13
-IN B1
+IN B
-OUT B
16
RI
AmpBM
Headphone
20KΩ
20KΩ
20KΩ
20KΩ
RI
Thermal
Audio
Input
18
12
20KΩ
Shutdown
AmpBS
CI
0.33µF
+OUT B
Rf
20KΩ
Rf
20KΩ
Figure 1. Typical Audio Amplifier Application Circuit
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PA4867
CMOS IC
TYPICAL CHARACTERISTICS
THD+N vs. Output Power
VDD=5V, RL=8Ω
Bridged Load
AVD=2,BW<80kHz
THD+N vs. Output Power
10
1
10
1
VDD=5V, RL=16Ω
Single Ended
AV= -1, BW<80kHz
f=20Hz
f=20kHz
f=20Hz
f=20kHz
0.1
0.1
f=1kHz
f=1kHz
0.010
0.010
0.1
2
10m
10m
0.1
0.5
1
Output Power (W)
Output Power (W)
Output Power vs. Supply Voltage
Output Power vs. Load Resistance
2
1.75
1.5
f=1kHz
RL=8Ω
Bridged Load
BW<80kHz
VDD=5V
f=1kHz
AVD=2
Bridged Load
BW<80kHz
1.75
1.5
1.25
1
1.25
1
0.75
10% THD+N
10% THD+N
1% THD+N
0.75
0.5
0.25
0
0.5
0.25
1% THD+N
0
2
3
5.5
8
10
2.5
3.5
4
4.5
5
30 40 50 60
Load Resistance (Ω)
20
70
Supply Voltage (V)
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PA4867
CMOS IC
TYPICAL CHARACTERISTICS(Cont.)
Power Derating Curve
Power Dissipation vs. Output Power
0.25
0.2
2.5
2
RL=8Ω
1.5
0.15
0.1
RL=16Ω
RL=32Ω
VDD=5V
f=1kHz
Single Ended
THD+N≤1.0%
BW<80kHz
1
0.5
0
0.05
-40
0
0
40
80
120
160
0.1
0.2
0.3
0.4
Temperature (℃)
Output Power (W)
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PA4867
CMOS IC
TYPICAL CHARACTERISTICS(Cont.)
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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