UNISONIC TECHNOLOGIES CO., LTD
PA3202
2-W STEREO AUDIO POWER
AMPLIFIER WITH MUTE
DESCRIPTION
The UTC
PA3202
is a monolithic integrated circuit that stereo
bridged audio power amplifiers capable of producing 2 W into 3Ω
with a 5V supply voltage or 800mW into 3Ω with a 3.3V supply
voltage .The UTC
PA3202
simplifies design and frees up board
space for other features. Both of the depop circuitry and the
thermal shutdown protection circuitry are integrated in UTC
PA3202,
that reduce clicks and pops noise during power up or
shutdown mode operation.
A MUX control terminal
(HP / LINE )
allows selection between
the two sets of stereo input signals. To simplify the audio system
design, UTC
PA3202
combines a stereo bridge-tied loads (BTL)
mode for speaker drive and a stereo single-end (SE) mode for
headphone drive into a single chip, where both modes are easily
switched by the
SE / BTL
input control pin signal.
CMOS IC
HTSSOP-24
FEATURES
* Improves depop circuitry to eliminate turn-on and turn-off
transients in output
* Output power:
-2W(typ.)@5V into 3Ω with 0.2% THD+N max (1kHz)
-800mW(typ.)@3.3V into 3Ω with 0.2% THD+N max (1kHz)
* Fully specified for use with 3-Ω Loads
* Stereo switchable bridged/single-ended power amplifiers
* Input MUX select terminal
* Thermal-shutdown protection
* Shutdown mode available
ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
PA3202L-N24-R
PA3202G-N24-R
PA3202L-N24-T
PA3202G-N24-T
Package
HTSSOP-24
HTSSOP-24
Packing
Tape Reel
Tube
www.unisonic.com.tw
Copyright © 2009 Unisonic Technologies Co., Ltd
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QW-R502-106.C
PA3202
PIN CONFIGURATION
GND/HS
T
J
LOUT+
LLINEIN
LHPIN
LBYPASS
LV
DD
SHUTDOWN
MUTE OUT
LOUT-
MUTE IN
GND/HS
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
GND/HS
NC
ROUT+
RLINEIN
RHPIN
RBYPASS
RV
DD
NC
HP/LINE
ROUT-
SE/BTL
GND/HS
CMOS IC
PIN DESCRIPTION
PIN NO
1, 12, 13, 24
6
17, 23
19
4
5
7
8
9
11
14
16
18
20
21
2
3
10
22
15
PIN NAME
GND/HS
LBYPASS
NC
RBYPASS
LLINE IN
LHP IN
LV
DD
SHUTDOWN
MUTE OUT
MUTE IN
SE/BTL
HP/LINE
RV
DD
RHPIN
RLINEIN
T
J
LOUT+
LOUT-
ROUT+
ROUT-
I/O
DESCRIPTION
Power ground; directly connected to thermal pad.
Tap to left channel internal mid-supply voltage divider bias
No connection
Tap to right channel internal mid-supply voltage divider bias
Left channel line input; selected when HP/LINE is held low
Left channel headphone input; selected when HP/LINE is held high
Left channel power supply and for primary bias circuits
Places entire IC in shutdown mode when held high, I
DD
= 5μA
Follows MUTE IN, provides buffered output
Mute all amplifiers input; high active to mute amplify, low active to normal
operation
SE & BTL mode selection; active high for SE mode, active low for BTL
mode
MUX control input, active high to select headphone input, active low to
select line input
Right channel power supply
Right channel headphone input, selected when HP/LINE is held high
Right channel line input, selected when HP/LINE is held low
Sources current proportional to the junction temperature. Left floating for
normal operation.
Left channel + output in BTL & SE mode
Left channel – output in BTL mode & high-impedance in SE mode
Right channel + output in BTL & SE mode
Right channel – output in BTL mode & high impedance in SE mode
I
I
I
I
I
I
I
I
I
I
I
O
O
O
O
O
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www.unisonic.com.tw
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QW-R502-106.C
PA3202
BLOCK DIAGRAM
CMOS IC
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QW-R502-106.C
PA3202
ABSOLUTE MAXIMUM RATINGS
(unless otherwise specified)
PARAMETER
CMOS IC
SYMBOL
RATINGS
UNIT
Supply Voltage
V
DD
6
V
Input Voltage
V
IN
-0.3~V
DD
~+0.3
V
Continuous Total Power Dissipation
P
D
Internally limited
Junction Temperature
T
J
+150
℃
Operating Temperature
T
OPR
-40 ~ +85
℃
Storage Temperature
T
STG
-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.
RECOMMENDED OPERATING CONDITIONS
PARAMETER
Supply Voltage
SYMBOL
V
DD
4-Ω stereo BTL
V
DD
= 5 V,
drive,
250 mW/ch
with proper PCB
average power,
design
3-Ω stereo BTL
V
DD
= 5 V,
drive,
2 W/ch average
with proper PCB
power,
design
V
DD
=5V
V
DD
=3.3V
MIN
3
-40
NOM
5
MAX UNIT
5.5
V
85
℃
-40
1.25
1.25
85
4.5
2.7
Operating Temperature
T
OPR
Common Mode Input Voltage
V
ICM
V
DC ELECTRICAL CHARACTERISTICS
(T
A
= 25℃)
PARAMETER
SYMBOL
TEST CONDITIONS
Stereo BTL
Stereo SE
V
DD
=5V
Mono BTL
Mono SE
Stereo BTL
Stereo SE
V
DD
=3.3V
Mono BTL
Mono SE
MIN
TYP
(1)
19
9
9
3
13
5
5
3
5
1
5
MAX
30
18
18
10
20
10
10
6
25
19
UNIT
mA
Supply Current
I
DD
mA
Output Offset Voltage
V
O(OFF)
V
DD
= 5 V, Gain = 2, See Note 1
(Measured Differentially)
Supply Current in Mute Mode
I
DD
(MUTE) V
DD
=5V
I
DD
in Shutdown
I
DD(SD)
V
DD
=5V
Note 1. At 3 V < V
DD
< 5 V the dc output voltage is approximately V
DD
/
2
.
mV
mA
μA
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QW-R502-106.C
PA3202
AC OPERATING CHARACTERISTICS
V
DD
= 5 V, T
A
= 25
℃
, R
L
= 3Ω
PARAMETER
SYMBOL
TEST CONDITIONS
Output Power (Each Channel) See
THD =0.2% BTL
P
OUT
Note 2
THD =1%
BTL
Total Harmonic Distortion Plus
P
OUT
= 2 W, f = 20 ~20 kHz
TDH+N
Noise
V
IN
= 1V, R
L
=10KΩ, A
V
=1V/V
Maximum Output Power Bandwidth
B
W
A
V
= 10 V/V ,THD < 1 %,
Phase Margin
R
L
= 4
Ω,
Open Loop,
f = 1 kHz
Supply Ripple Rejection Ratio
RR
f = 20~20kHz,
Mute Attenuation
Channel-to-Channel Output
f = 1 kHz
Separation
Line/HP Input Separation
BTL Attenuation in SE Mode
Input Impedance
Z
IN
Signal-to-Noise Ratio
P
OUT
=500mW, BTL
Output Noise Voltage
eN
V
DD
= 3.3 V, T
A
= 25
℃
, R
L
= 3Ω
PARAMETER
SYMBOL
TEST CONDITIONS
Output Power ( Each Channel) See
THD =0.2% BTL
P
OUT
Note 2
THD =1%
BTL
Total Harmonic Distortion Plus
P
OUT
= 800mW, f = 20 ~20 kHz
TDH+N
Noise
V
IN
= 1V, R
L
=10KΩ, A
V
=1V/V
Maximum Output Power Bandwidth
B
W
A
V
= 10 V/V, THD < 1 %,
Phase Margin
R
L
= 4
Ω,
Open Loop
f = 1 kHz
Supply Ripple Rejection Ratio
RR
f = 20~20kHz,
Mute Attenuation
Channel-to-Channel Output
f = 1 kHz
Separation
Line/HP Input Separation
BTL Attenuation in SE Mode
Input Impedance
Z
IN
Signal-to-Noise Ratio
P
OUT
=500mW, BTL
Output Noise Voltage
eN
Note 2. Output power is measured at the output terminals of the IC at 1 kHz.
MIN
TYP
2
2.2
200
100
>20
85°
80
60
85
85
100
100
2
95
21
MIN
TYP
800
900
350
200
>20
85°
70
55
85
85
100
100
2
95
21
CMOS IC
MAX
UNIT
W
m%
m%
KHz
dB
dB
dB
dB
dB
MΩ
dB
μV
(RMS)
MAX
UNIT
mW
m%
m%
KHz
dB
dB
dB
dB
dB
MΩ
dB
μV
(RMS)
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QW-R502-106.C
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