UNISONIC TECHNOLOGIES CO., LTD
PA7469
CMOS IC
STEREO 2.6W AUDIO POWER
AMPLIFIER
(WITH DC_VOLUME CONTROL)
„
DIP-16
DESCRIPTION
As an audio power amplifier, UTC PA7469 can provides precise
DC volume control, and a stereo bridged audio power amplifiers
capable of producing 2.6Ω(1.8W) into 4W with less than 10%
(1.0%)THD+N.
In UTC PA7469, the attenuator range of the volume control is
from 20dB (DC_Vol=0V) to -80dB (DC_Vol=3.54V) with 32 steps.
It also includes both of the depop circuitry and the thermal
shutdown protection circuitry which can reduce pops and clicks
noise during power up or shutdown mode operation. It also
improves the power off pop noise and has the parts to not been
destroyed by over temperature and short current failure.
Into a single UTC PA7469 chip, there are a stereo bridge-tied
loads (BTL) mode for speaker drive and a stereo single-end (SE)
mode for headphone drive into a single chip, which built to simplify
the audio system design. And both modes are easily switched by
the SE/BTL input control pin signal.
„
SOP-16
* Product number:
Lead-free: PA7469L
Halogen-free: PA7469G
FEATURES
* Low operating current: 9mA
* Two output modes allowable with BTL and SE modes selected by
SE/BTL pin
* Low current consumption in shutdown mode :1μA
* Short circuit protection
* Thermal shutdown protection and over current protection circuitry
* Improved depop circuitry to eliminate turn-on and turn-off
transients in outputs
* Very high PSRR
* 32 Steps volume adjustable
* BTL mode: 2.6W per channel output power into 4Ω Load at 5V
„
RDERING INFORMATION
Normal
PA7469-D16-T
PA7469-S16-T
PA7469-S16-R
Ordering Number
Lead Free Plating
PA7469L-D16-T
PA7469L-S16-T
PA7469L-S16-R
Halogen-Free Plating
PA7469G-D16-T
PA7469G-S16-T
PA7469G-S16-R
www.unisonic.com.tw
Copyright © 2008 Unisonic Technologies Co., Ltd
Package
Packing
DIP-16
SOP-16
SOP-16
Tube
Tube
Tape Reel
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PA7469
„
„
CMOS IC
PIN CONFIGURATION
SHUTDOWN
1
16
ROUT-
BYPASS
2
15
VDD
RIN-
3
14
ROUT+
GND
4
13
GND
GND
5
12
GND
LIN-
6
11
LOUT+
VOLUME
7
10
VDD
SE/BTL
8
9
UTC
PA7469
LOUT-
PIN DESCRIPTION
PIN NO
1
2
3
4,5,12,13
6
7
PIN NAME
SHUTDOWN
BYPASS
RINGND
LINVOLUME
I/O
I
I
I
8
SE/ BTL
I
9
10,15
LOUTVDD
O
11
LOUT+
O
14
ROUT+
O
16
ROUT-
O
I
I
DESCRIPTION
When this pin is pulled low the chip will be into shutdown mode. ISD= 1μA
Bias voltage generator
Right channel input
Ground
Left channel input
Volume gain setting input signal
Output mode control input,
High: SE output mode, Low: for BTL mode.
Left channel positive output in BTL mode and SE mode.
Supply voltage
Left channel negative output in BTL mode
High impedance in SE mode.
Right channel negative output in BTL mode
High impedance in SE mode.
Right channel positive output in BTL mode and SE mode.
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PA7469
„
CMOS IC
BLOCK DIAGRAM
LINRIN-
LOUT+
Volume Control
VOLUME
LOUT-
BYPASS
BYPASS
ROUT+
SE/BTL
SE/BTL
SHUTDOWN
Shutdown ckt
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
ROUT-
Power and
Depop
circuit
VDD
GND
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„
CMOS IC
ABSOLUTE MAXIMUM RATINGS
(Over operating free-air temperature range unless otherwise specified)
PARAMETER
SYMBOL
RATINGS
UNIT
Supply Voltage
VDD
-0.3 ~ 6
V
Input Voltage , SE/BTL, SHUTDOWN
VIN
-0.3 ~ VDD+0.3
V
Power Dissipation
PD
Internal Limited
Junction Temperature
TJ
Internal Limited(Note1)
℃
Operating Temperature
TOPR
-40 ~ 85
℃
Storage Temperature
TSTG
-65~ +150
℃
Note: 1. That integrated internal thermal shutdown protection when junction temperature ramp up to 150℃
2. 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.
„
THERMAL DATA
PARAMETER
Junction to Ambient in Free Air
„
SYMBOL
θJA
UNIT
℃/W
OPERATING CONDITIONS RECOMMENDED
PARAMETER
SYMBOL
VDD
Supply Voltage
High Level Threshold Voltage
Low Level Threshold Voltage
SHUTDOWN
SE/BTL
SHUTDOWN
SE/BTL
MIN
4.5
2
4
VIH
TYP
MAX
5.5
VI(CM)
UNI
V
V
V
V
V
V
1.0
3
VIL
Common Mode Input Voltage
„
RATINGS
45
VDD -1.0
ELECTRICAL CHARACTERISTICS VDD=5V, -20℃<TA<85℃ (unless otherwise specified)
PARAMETER
Supply Voltage
SYMBOL
VDD
Supply Current
IDD
Supply Current in Shutdown Mode
ISD
TEST CONDITIONS
MIN
4.5
SE/BTL=0V
SE/BTL=5V
SE/BTL=0V
SHUTDOWN=0V
9
4
IIH
IIL
Output Differential Voltage
VOS
BTL Mode VDD=5V, TA=25℃,RL=4Ω, Gain=2dB
input Current
High
Low
Maximum Output Power
Total Harmonic Distortion Plus Noise
Power Ripple Rejection Ratio(Note1)
Channel Separation
Signal to Noise Ratio
THD=10%, RL=3Ω, FIN=1kHz
THD=10%, RL=4Ω, FIN=1kHz
THD=10%, RL=8Ω, FIN=1kHz
POUT
THD=1%, RL=3Ω, FIN=1kHz
THD=1%, RL=4Ω, FIN=1kHz
THD=0.5%, RL=8Ω, FIN=1kHz
POUT=1.2W, RL=4Ω, FIN=1kHz
THD+N
POUT=0.9W, RL=8Ω, FIN=1kHz
VIN=0.1Vrms,RL=8Ω,CB=1μF,
PSRR
Fin=120Hz
Xtalk CB=1mF, RL=8Ω, FIN=1kHz
S/N
POUT =1.1W, RL=8Ω, A_wieght
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
TYP
1
MAX
5.5
20
10
UNIT
V
mA
mA
1
μA
900
900
5
nA
nA
mV
2.9
2.6
1.6
2.4
1.8
1.3
0.07
0.08
W
W
W
W
W
W
%
%
60
dB
90
95
dB
dB
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„
CMOS IC
ELECTRICAL CHARACTERISTICS(Cont.)
PARAMETER
SYMBOL
SE Mode VDD=5V,TA=25℃, Gain=1dB
Maximum Output Power
Total Harmonic Distortion Plus Noise
Power Ripple Rejection Ratio
Channel Separation
Signal to Noise Ratio
THD=10%, RL=16Ω, FIN=1kHz
THD=10%, RL=32Ω, FIN=1kHz
POUT
THD=1%, RL=16Ω, FIN=1kHz
THD=1%, RL=32Ω, FIN=1kHz
POUT=125mW,RL=16Ω, FIN=1kHz
THD+N
POUT=65mW, RL=32Ω, FIN=1kHz
VIN=0.1Vrms, RL=8Ω, CB=1μF,
PSRR
FIN=120Hz
Xtalk CB=1mF, RL=32Ω, FIN=1kHz
S/N
POUT=75mΩ,SE,RL=32Ω,A_wieght
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
TEST CONDITIONS
MIN
TYP
MAX
UNIT
220
120
160
95
0.09
0.09
mW
mW
mW
mW
60
dB
60
100
dB
dB
%
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„
CMOS IC
TYPICAL APPLICATION CIRCUIT
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PA7469
„
CMOS IC
VOLUME CONTROL TABLE_BTL MODE (Supply Voltage VDD=5V)
GAIN(DB)
HIGH(V)
LOW(V)
HYSTERESIS(MV)
RECOMMENDED VOLTAGE(V)
20
18
16
14
12
10
8
6
4
2
0
-2
-4
-6
0.12
0.23
0.34
0.46
0.57
0.69
0.80
0.91
1.03
1.14
1.25
1.37
1.48
1.59
0.00
0.17
0.28
0.39
0.51
0.62
0.73
0.84
0.96
1.07
1.18
1.29
1.41
1.52
52
51
50
49
47
46
45
44
43
41
40
39
38
0
0.20
0.31
0.43
0.54
0.65
0.77
0.88
0.99
1.10
1.22
1.33
1.44
1.56
-8
1.71
1.63
37
1.67
-10
-12
-14
-16
-18
-20
-22
-24
-26
-28
-30
-32
-34
-36
-38
-40
1.82
1.93
2.05
2.16
2.28
2.39
2.50
2.62
2.73
2.84
2.96
3.07
3.18
3.30
3.41
3.52
1.74
1.85
1.97
2.08
2.19
2.30
2.42
2.53
2.64
2.75
2.87
2.98
3.09
3.20
3.32
3.43
35
34
33
32
30
29
28
27
26
24
23
22
21
20
18
17
1.78
1.89
2.01
2.12
2.23
2.35
2.46
2.57
2.69
2.80
2.91
3.02
3.14
3.25
3.36
3.48
-80
5.00
3.54
16
5
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THD+N (%)
THD+N (%)
THD+N (%)
THD+N (%)
TYPICAL CHARACTERISTICS
1
0.1
THD+N vs. Frequency
5
VDD=5V
RL=3Ω
POUT=1.8W
BTL
THD+N (%)
5
THD+N (%)
„
CMOS IC
AVD=20dB
1
0.1
THD+N vs. Frequency
VDD=5V
AV=6dB
RL=3Ω
BTL
POUT=0.9W
AVD=6dB
0.01
20
100
1k
Frequency (Hz)
10k 20k
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0.01
20
POUT=1.8W
100
1k
Frequency (Hz)
10k 20k
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THD+N (%)
THD+N (%)
THD+N (%)
TYPICAL CHARACTERISTICS
THD+N (%)
„
CMOS IC
+20
+16
+12
Frequency Response
Amplitude(20dB)
Phase(20dB)
+0
10
+14
+320
VDD=5V
+310
RL=4Ω
POUT=0.8W
+300
BTL
+10
+190
+2
+180
-2
+170
-6
Phase(6dB)
+8
+4
+330
Amplitude(6dB)
+160
100
1k
20k 100k 200k
Frequency (Hz)
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
+6
Frequency Response
+220
VDD=5V
Amplitude(14dB)
+210
RL=32Ω
CO=1000µF
POUT=300mW
Phase(14dB)
+200
SE
Amplitude(0dB)
+190
Phase(0dB)
+180
+170
-10
20
100
10k
1k
Frequency (Hz)
+165
100k 200k
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TYPICAL CHARACTERISTICS(Cont.)
Crosstalk vs. Frequency
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
-110
-120
20
VDD=5V
RL=4Ω
POUT=1.5W
BTL
-20
-30
-40
-50
1k
Frequency (Hz)
10k 20k
Filter BW<22KHz
20u
A-Weight
VDD=5V
AV=6dB
RL=4Ω
BTL
0
100
1k
Frequency (Hz)
10k 20k
PSRR vs. Frequency
-90
-100
20
100u
1u
20
-30
-40
-50
-40
-50
-100
20
100
1k
Frequency (Hz)
10k 20k
UNISONIC TECHNOLOGIES CO., LTD
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Filter BW<22KHz
VDD=5V
AV=0dB
RL=32Ω
SE
-30
-90
10k 20k
A-Weight
0
VDD=5V
RL=4Ω
VIN=200mV
AV=20dB
BTL
1k
Frequency (Hz)
10u
-10
-20
-70
-80
100
Output Noise Voltage vs. Frequency
20u
-10
-20
-60
Left to Right
-80
Output Noise Voltage vs. Frequency
1u
20
Right to Left
-60
-70
Left to Right
10u
VDD=5V
RL=32Ω
CO=1000µF
POUT=65mW
SE
-10
Right to Left
100
Crosstalk vs. Frequency
0
Output Noise Voltage(V)
100u
Output Noise Voltage(V)
„
CMOS IC
100
10k 20k
PSRR vs. Frequency
-60
VDD=5V
RL=32Ω
VIN=200mV
AV=14dB
SE
-70
-80
-90
-100
20
1k
Frequency (Hz)
100
1k
Frequency (Hz)
10k 20k
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Power Dissipation (W)
Supply Current(mA)
Gain (dB)
Shutdown Attenuation(dB)
TYPICAL CHARACTERISTICS(Cont.)
200
Power Dissipation vs. Output Power
RL=8Ω
180
160
Power Dissipation (W)
„
CMOS IC
140
120
100
RL=16Ω
80
60
40
RL=32Ω
20
0
0
50
100
150 200
Output Power(W)
250
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CMOS IC
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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