UNISONIC TECHNOLOGIES CO.,
3541
CLASS AB STEREO
HEADPHONE DRIVER WITH
MUTE
DESCRIPTION
The UTC
3541
is a class AB stereo headphone driver with
Mute feature.
DIP-8
CMOS IC
FEATURES
* Built-in Mute Function
* No Switch ON/OFF pops
* Short-Circuit Protection
* Low Power Consumption
* Large Output Voltage Swing
* High Signal-to-Noise Ratio
SOP-8
Lead-free:
3541L
Halogen-free:3541G
■
ORDERING INFORMATION
Normal
3541-D08-T
3541-S08-R
Ordering Number
Lead Free Plating
3541L-D08-T
3541L-S08-R
Halogen Free
3541G-D08-T
3541G-S08-R
Package
DIP-8
SOP-8
Packing
Tube
Tape Reel
www.unisonic.com.tw
Copyright © 2009 Unisonic Technologies Co.,
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QW-R502-035.B
3541
BLOCK DIAGRAM
CMOS IC
0dB
+
PIN DESCRIPTION
PIN NO.
1
2
3
4
5
6
7
8
PIN NAME
OUT 1
Mute
IN 1
V
SS
IN 2
BIAS
OUT 2
V
DD
I/O
O
I
I
I
I
O
DESCRIPTION
Output pin for Channel A
Mute control input, high for normal operation
Input pin for Channel A
Power ground
Input pin for Channel B
Right channel bias input pin
Output pin for Channel B
Power supply input
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
+
0dB
A
B
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QW-R502-035.B
3541
ABSOLUTE MAXIMUM RATINGS
PARAMETER
CMOS IC
SYMBOL
RATINGS
UNIT
Supply Voltage
V
DD
7
V
Output Short-Circuit Duration (Ta=25°C, P
D
=1W)
t
sc(o)
20
S
Junction Temperature
T
J
150
°C
Operating Temperature
T
OPR
-40 ~ +85
°C
Storage Temperature
T
STG
-65 ~ +150
°C
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.
THERMAL CHARACTERISTICS
RATINGS
UNIT
DIP-8
108
Junction to Ambient (Note)
θ
JA
°C/W
SOP-8
210
DIP-8
45
Junction to Case
θ
JC
°C/W
SOP-8
40
Note:
θ
JA
is measured with the component mounted on a high effective thermal conductivity test board in free air.
PARAMETER
SYMBOL
ELECTRICAL CHARACTERISTICS
(V
IN
=0dBV, V
CC
=5V, Ta=25°C, f=1kHz, R
L
=32Ω, unless otherwise specified.)
PARAMETER
SYMBOL
TEST CONDITIONS
Supply Voltage
V
DD
Mute Terminal Voltage
V
TM
Quiescent Current
I
Q
V
IN
= 0V
rms
Mute Current
I
MUTE
Voltage Gain
G
VCL
V
IN
=1V
rms
, f =1kHz, R
L
=32Ω
Differential Channel Voltage Gain
ΔG
VCL
Channel Separation
CS
f =1 kHz
Mute Attenuation
ATT
V
IN
= 1V
rms
, f =1 kHz, Mute=L
Ripple Rejection
RR
F
RR
=100Hz, V
RR
= -20dBV
Output Noise Voltage
V
NO
BW = 20~20kHz, V
IN
=0V
rms
Total Harmonic Distortion
THD BW<120 kHz
Rated Output Power 1
P
O1
R
L
=32Ω
THD+N = 0.1%, BW<120 kHz
Rated Output Power 2
P
O2
R
L
=16Ω
MIN
3.0
0.3
TYP
5.0
0.7
3.5
200
0
0
-92.5
70
60
-93
0.03
55
110
MAX UNIT
6.0
V
1.6
V
5
mA
μA
2
dB
0.5 dB
dB
dB
dB
-85 dBV
0.1 %
mW
mW
-2
-0.5
-90
65
50
50
105
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
3 of 6
QW-R502-035.B
3541
TEST AND APPLICATION CIRCUIT
V
INB
1μF
IN2
5
BIAS
OUT2
6
7
V
DD
8
UTC 3541
V
DD
100μF
10 µF
220μF
CMOS IC
BIAS
+B
0dB
+A
0dB
MUTE
4
V
SS
2
3
IN1 Mute
1
OUT1
1μF
220μF
1μF
V
INA
100kΩ
V
MUTE
H : Speaker Action
L : Mute on
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
4 of 6
QW-R502-035.B
3541
TYPICAL CHARACTERISTICS
Quiescent Current VS. Supply Voltage
8
7
Quiescent Current, IQ(mA)
6
5
4
3
2
1
0
0
MUTE: ON
4
6
2
Supply Voltage, V
DD
(V)
8
0
0
2
MUTE: OFF
R
L
=32Ω
Bias DC Voltage, V
BIAS
(V)
5
CMOS IC
Bias DC Voltage VS. Supply Voltage
R
L
=32Ω
4
3
2
1
4
8
6
Supply Voltage, V
DD
(V)
10
Output Voltage VS. Mute Control Voltage
V
DD
=5V
0 V
IN
=0dBV
-10 f=1kHz
R
L
=32Ω
-20
-30
-40
-50
-60
-70
-80
0
0.4
0.8
1.2
1.6
Mute Control Voltage, V
TM
(V)
Channel Separation VS. Frequency
+0
Channel Separation, CS (dB)
-20
-40
-60
-80
-100
-120
V
DD
=5V
R
L
=32Ω
Mute Attenuation, ATT (dB)
2
10
+8
+6
Voltage Gain ,G
VC
(dB)
+4
+2
+0
-2
-4
-6
-8
-10
-12
10
Voltage Gain VS. Frequency
V
DD
= 5V
V
IN
= 0 dBV
Output Voltage, V
OUT
(dBV)
100
1k
10k
Frequency, f(Hz)
100k 120 k
Mute Attenuation VS. Frequency
+0
V
DD
=5V
-10
V
IN
=0dBV
-20 R
L
=32Ω
-30
-40
-50
-60
-70
-80
-90
-100
10
100
1k
10k
Frequency, f (Hz)
100k
10
100
1k
10k
Frequency, f (Hz)
100k
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
5 of 6
QW-R502-035.B
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