PA7493L-S16-R [UTC]
2W X 2 CLASS AB AUDIO POWER AMPLIFIER (WITH DC_VOLUME CONTROL); 2W ×2 ，AB类音频功率放大器（带DC_VOLUME CONTROL）
| 型号： | PA7493L-S16-R |
| 厂家： | 
Unisonic Technologies |
| 描述： | 2W X 2 CLASS AB AUDIO POWER AMPLIFIER (WITH DC_VOLUME CONTROL) |
| 文件： | 总7页 (文件大小：215K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
UNISONIC TECHNOLOGIES CO., LTD
PA7493
CMOS IC
2W X 2 CLASS AB AUDIO
POWER AMPLIFIER (WITH
DC_VOLUME CONTROL)
DIP-16
DESCRIPTION
UTC PA7493 provides precise DC volume control, and a stereo
bridged audio power amplifiers capable of producing 2W into 4Ω as
a monolithic integrated circuit. In stand-by the power consumption
is very low. UTC PA7493 combines a stereo single-end (SE) mode
for headphone drive into a single chip and a stereo bridge-tied
loads (BTL) mode for speaker drive(both modes are easily
switched by the SE/BTL input control signal) to simplify the audio
system design. Package size is not occupies PCB space cause the
built-in over-temperature protection. It is suitable for small or
portable products.
SOP-16
Lead-free:
Halogen-free: PA7493G
PA7493L
FEATURES
* Stereo switch able bridged/single-ended power amplifiers
* Output power 2W × 2 (VCC=6V, THD=1%, RL=4Ω)
* Low harmonics distortion
* Include 32 steps volume controller by DC voltage with ysteresis
* “Click and pop” suppression circuitry
* Low current consumption in SHUTDOWN Mode(0.7μA)
* Thermal shutdown
ORDERING INFORMATION
Ordering Number
Package
Packing
Normal
Lead Free
Halogen Free
Tube
Tube
PA7493-D16-T
PA7493-S16-R
PA7493-S16-T
PA7493L-D16-T
PA7493L-S16-R
PA7493L-S16-T
PA7493G-D16-T
PA7493G-S16-R
PA7493G-S16-T
DIP-16
SOP-16
SOP-16
Tape Reel
www.unisonic.com.tw
Copyright © 2008 Unisonic Technologies Co., Ltd
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QW-R502-113.C
PA7493
CMOS IC
PIN CONFIGURATION
16
1
2
3
4
SHUTDOWN
VCC
+OUT1
VCC
15
14
13
DC Vol
-OUT1
BYPASS
UTC
VOUT
1
PA7493
12
11
5
6
7
8
VIN1
VIN2
SE/BTL
-OUT2
VCC
10
9
VOUT
2
GND
+OUT2
PIN DESCRIPTION
PIN NO
PIN NAME
SHUTDOWN
VCC
I/O
I
DESCRIPTION
1
2
When this pin connected to the VCC entire IC into the shutdown mode
Supply voltage input pin
3
DC Vol
I
I
I
I
I
DC Volume control input
4
VOUT
1
Output of Channel 1 for external feedback circuit
Input of Channel 1 audio
5
VIN1
VIN2
6
Input of Channel 2 audio
7
VOUT
2
Output of Channel 2 for external feedback circuit
Ground
8
GND
9
+OUT2
VCC
O
Output (+) of Channel 2
10
11
Supply voltage input
-OUT2
O
I
Output (-) of Channel 2
Output mode select, which is connected to the VCC for SE mode or GND for
BTL mode
SE/BTL
12
13
14
15
16
BYPASS
-OUT1
VCC
O
O
Internal bias reference bypassing
Output (-) of Channel 1
Supply voltage input
+OUT1
O
Output (+) of Channel 1
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QW-R502-113.C
PA7493
CMOS IC
BLOCK DIAGRAM
VOUT1
Rf
-OUT1
+OUT1
VIN1
20K
RI
20K
AMP1N
AMP1P
Voltage
Bypass and
De-Pop Noise
BYPASS
SE/BTL
32 steps
DC Control
Volume
Logic
Control
SHUTDOWN
VIN2
VOUT
2
Rf
-OUT2
+OUT2
20K
RI
VCC
20K
AMP2N
Power
Management
AMP2P
GND
DC Vol
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QW-R502-113.C
PA7493
CMOS IC
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
VCC
RATINGS
0~7
UNIT
V
Supply Voltage
Input Voltage
VIN
-0.3~VCC+0.3
-10~+10
-40~+85
-65~+150
V
Input Current
IIN
mA
℃
Operating Temperature
Storage Temperature
TOPR
TSTG
℃
Note: 1. 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.
2. Input pins surge current can be reached 100mA will not induce the CMOS latched up.
ELECTRICAL CHARACTERISTICS
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
FOR ENTIRE IC (VCC=5V, TA=25℃, unless otherwise specified.)
Supply Voltage
VCC
ICC
ISD
3
6
5
6
12
14
1
V
SE MODE
8
Quiescent Power Supply Current
Shutdown Current
mA
BTL MODE
SHUTDOWN=ON
SHUTDOWN
SE/BTL
8
10
0.7
0.6
0.9
0.2
0.1
0.2
0.5
0.8
μA
Vcc
Vcc
Vcc
Vcc
High Level
Threshold Voltage
VIH
SHUTDOWN
SE/BTL
0.3
0.2
Low Level
VIL
FOR VOLUME ATTENUATORS (VCC=5V, TA=25℃, unless otherwise specified.)
Two Channels Gain Error
Gerr
RIN=RF=20KΩ
-1
-1
0
0
+1
+1
dB
dB
DC Vol=5V,F=1KHz
DC Vol =16.875% VCC
Volume Control Range
VCTRL
-46
-78
-78
-47
-48
BTL
dB
dB
Mute Attenuation
AM
VMUTE=5V
SE
FOR SINGLE-ENDED MODE OPERATION (VCC=5V, bandwidth = 22~22 KHz, Unless otherwise specified.)
THD=1.0%
THD=10%
80
85
90
Maximum Output Power
POUT
THD+N
PSRR
RL =32Ω
mW
%
100
110
120
Total Harmonic Distortion Plus
Noise
P
OUT＝50mW, RL=32Ω
0.03
0.05
58
0.07
V
RIPPLE=200mVrms,
CB =1μF, Fin=120Hz
OUT=75mW, RL=32Ω,
Power Ripple Rejection Ratio
dB
P
Signal to Noise Ratio
Channel Separation
SNR
Xtalk
102
80
dB
dB
A-weight
CB=1μF, Fin=1kHz
77
83
FOR BRIDGED MODE OPERATION (VCC = 5V, bandwidth = 22~22 KHz, Unless otherwise specified.)
Output Offset Voltage
VO(OFF) VIN=0V, No Load
THD+N=1%, RL =4Ω
-50
1.4
5
50
1.8
mV
W
1.6
2.0
2.0
1.1
1.4
0.05
0.08
THD+N=10%, RL =4Ω
1.8
2.1
Maximum Output Power
POUT
THD+N=1%, RL =4Ω, VCC=6V
THD=1%, RL =8Ω
1.9
2.2
1.0
1.2
THD+N=10%, RL =8Ω
1.2
1.6
P
P
V
OUT＝0.2W, RL=4Ω
Total Harmonic Distortion Plus
Noise
0.03
0.06
0.07
0.15
THD+N
PSRR
%
OUT =1W, RL =4Ω
RIPPLE=200mVrms , RL =8Ω,
Power Ripple Rejection Ratio
74
dB
CB =1μF, Fin=120Hz
Signal to Noise Ratio
Channel Separation
SNR
Xtalk
POUT =1.1W, RL =8Ω, A-weight
CB=1μF, Fin=1kHz
93
88
dB
dB
85
91
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QW-R502-113.C
PA7493
CMOS IC
FUNCTION DESCRIPTION
POWER SUPPLY
The UTC PA7493 operating voltage range is from 3V to 6V. In general, the 5V operating voltage is recommended.
When the supply voltage less than 3V, the IC can work properly but the distortion will rise. The higher stand-by
current consumption will rise the chip surface temperature after the operating voltage over 6.5V.
SHUTDOWN
After powering on the UTC PA7493, connects the SHUTDOWN pin to VCC will force the chip into shutdown mode.
At the shutdown mode, the total current consumption is less than 0.7μA, and all of the input/output pins no voltage
output. The chip is back to the normal operation when the SHUTDOWN pin sets to GND.
SHUTDOWN PIN
OUTPUT STATE
SHUTDOWN ON
Normal
VCC
GND
INPUT GAIN ADJUST
The output gain of the UTC PA7493 can be adjusted by the external resistor. 0dB gain setting is recommended in
normal operation, please refer the application circuit. If the source output level is not so high (ex :< 2VPP), input gain
can be increased to get the proper volume. The minimum value of the input series resistance is 10KΩ for the modest
input impedance.
To make sure the input stage not distorted by overload, please confirm the input signal level. For the gain set
please refer the following table:
Operating Voltage
VCC=3V
Input Gani=-6db
VIN<5VPP
Input Gain=0db
VIN<2.5VPP
VIN<4VPP
Input Gani=+6db
VIN<1.25VPP
VIN<2VPP
VCC=5V
VIN<8VPP
SE/BTL MODE SWITCHING
The UTC PA7493 has two output modes, SE(Single-Ended) or BTL(Bridge-Tied Load). To drive a speaker load,
set to the BTL mode is recommended for getting the more power output. Driving a headphone load, we suggest
setting to SE mode and turn-off the un-work amplifier to decrease the stand-by power consumption. Switching
between the SE and BTL modes is controlled by the SE/BTL pin, please refer the following table:
SE/BTL
VCC
MODE
SE
GND
BTL
CLICK AND POP SURPPRESS
A power amplifier uses single supply voltage may cause noises on the output port during the power-on period. It is
because of the output DC potential level needs time to stable on 1/2Vcc, the period is relative with the capacitor on
the BYPASS pin. The higher capacitor value will extend the stable time and also suppress the noise during the
power-on period. At the supply voltage is 5V and the capacitor is 2.2μF, the stable time is around 300ms. The value
of the BYPASS capacitor also relatives with the DC blocking capacitor connected at the input terminal. In general
condition the time constant of DC blocking capacitor should be less than the CB stable time. Recommend parts
values please refer the application circuit.
UNISONIC TECHNOLOGIES CO., LTD
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5 of 7
QW-R502-113.C
PA7493
CMOS IC
VOLUME CONTROL TABLE
Gain
(dB)
Voltage Range (% of VCC
)
Voltage Range (VCC = 5)
Low
Recommended
Voltage Range (VCC = 3)
Low High
Recommended
100.000%
76.875%
74.375%
71.875%
69.375%
66.875%
64.375%
61.875%
59.375%
56.875%
54.375%
51.875%
49.375%
46.875%
44.375%
41..875%
39.375%
36.875%
34.375%
31.875%
29.375%
26.875%
24.375%
21.875%
19.375%
16.875%
14.375%
11.875%
9.375%
High
5.000
3.938
3.813
3.688
3.563
3.438
3.313
3.188
3.063
2.938
2.813
2.688
2.563
2.438
2.313
2.188
2.063
1.938
1.813
1.688
1.563
1.438
1.313
1.188
1.063
0.937
0.812
0.687
0.562
0.437
0.312
Low
High
3.000
2.363
2.288
2.213
2.138
2.063
1.988
1.913
1.838
1.763
1.688
1.613
1.538
1.463
1.388
1.313
1.238
1.163
1.088
1.013
0.937
0.862
0.787
0.712
0.637
0.562
0.487
0.412
0.337
0.262
0.187
Recommended
3.000
2.306
2.231
2.156
2.081
2.006
1.931
1.856
1.781
1.706
1.631
1.556
1.481
1.406
1.331
1.256
1.181
1.106
1.031
0.956
0.881
0.806
0.731
0.656
0.581
0.506
0.431
0.356
0.281
0.206
0.000
0
77.5% 100.00%
75.0% 78.5%
72.5% 76.25%
70.0% 73.75%
67.5% 71.25%
65.0% 68.75%
62.5% 66.25%
60.0% 63.75%
57.5% 61.25%
55.0% 58.75%
52.5% 56.25%
50.0% 53.75%
47.5% 51.25%
45.0% 48.75%
42.5% 46.25%
40.0% 43.75%
37.5% 41.25%
35.0% 38.75%
32.5% 36.25%
30.0% 33.75%
27.5% 31.25%
25.0% 28.75%
22.5% 26.25%
20.0% 23.75%
17.5% 21.25%
15.0% 18.75%
12.5% 16.25%
10.0% 13.75%
7.5% 11.25%
3.875
3.750
3.625
3.500
3.375
3.250
3.125
3.000
2.875
2.750
2.625
2.500
2.375
2.250
2.125
2.000
1.875
1.750
1.625
1.500
1.375
1.250
1.125
1.000
0.875
0.750
0.625
0.500
0.375
0.250
0.000
5.000
3.844
3.719
3.594
3.469
3.344
3.219
3.094
2.939
2.844
2.719
2.594
2.469
2.344
2.219
2.094
1.939
1.844
1.719
1.594
1.469
1.344
1.219
1.094
0.939
0.844
0.719
0.594
0.469
0.344
0.000
2.325
2.250
2.175
2.100
2.025
1.950
1.875
1.800
1.725
1.650
1.575
1.500
1.425
1.350
1.275
1.200
1.125
1.050
0.975
0.900
0.825
0.750
0.675
0.600
0.525
0.450
0.375
0.300
0.225
0.150
0.000
-1
-2
-3
-4
-5
-6
-8
-10
-12
-14
-16
-18
-20
-22
-24
-26
-28
-30
-32
-34
-36
-39
-42
-45
-47
-51
-56
-61
-66
-78
5.0%
0.0%
8.75%
6.25%
6.875%
0.000%
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6 of 7
QW-R502-113.C
PA7493
CMOS IC
TYPICAL APPLICATION 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.
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QW-R502-113.C
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