UNISONIC TECHNOLOGIES CO., LTD
UM2750
Preliminary
LINEAR INTEGRATED CIRCUIT
4 INPUT/1 OUTPUT STEREO
AUDIO SELECTOR
DESCRIPTION
The UTC
UM2750
is a Stereo Audio Selector with 4 Inputs and
1 Output. Based upon the inner OP-AMP Switch technology, the
UTC
UM2750
features higher Channel Separation, lower Output
Noise and lower Distortion than the common Multiplexers or
Analogue Switches.
The UTC
UM2750
can be applied to many kinds of audio
devices, such as Car Stereo, TV, Mini music center and so on.
FEATURES
* Dual Channel for Stereo Use
* 4.7~13V Operating Voltage
* 4 Input /1 Output Audio Selectors
* Bipolar Technology
* Low Output Noise: -110dBV typ.
* Low Distortion: 0.005% typ.
ORDERING INFORMATION
Ordering Number
Lead Free
UM2750L-S16-R
UM2750L-S16-T
Halogen Free
UM2750G-S16-R
UM2750G-S16-T
Package
SOP-16
SOP-16
Packing
Tape Reel
Tube
www.unisonic.com.tw
Copyright © 2012 Unisonic Technologies Co., Ltd
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QW-R109-031. a
UM2750
PIN CONFIGURATION
1
Preliminary
LINEAR INTEGRATED CIRCUIT
IN1a
16
GND
CNT1
2
15
OUTa
IN2a
3
14
V+
CNT2
4
13
IN3a
IN4a
5
12
V
REF
IN1b
6
11
OUTb
IN2b
7
10
(N.C.)
IN4b
8
9
IN3b
PIN DESCRIPTION
PIN NO.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
PIN NAME
IN1a
CNT1
IN2a
CNT2
IN4a
IN1b
IN2b
IN4b
IN3b
(N.C.)
OUTb
V
REF
IN3a
V+
OUTa
GND
DESCRIPTION
Ach Input 1
Select Control 1
Ach Input 2
Select Control 2
Ach Input 4
Bch Input 1
Bch Input 2
Bch Input 4
Bch Input 3
No Connect
Bch Output
Reference Voltage
Ach Input 3
Supply Voltage
Ach Output
Ground
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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UM2750
BLOCK DIAGRAM
Preliminary
LINEAR INTEGRATED CIRCUIT
IN1a
1
16
GND
CNT1
2
V+
15
OUTa
IN2a
3
Logic
Circuit
bias
14
V+
CNT2
4
13
IN3a
IN4a
5
12
V
REF
IN1b
6
11
OUTb
IN2b
7
10
(N.C.)
IN4b
8
9
IN3b
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
3 of 5
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UM2750
Preliminary
LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATING
(T
A
=25°C, unless otherwise specified)
PARAMETER
SYMBOL
RATINGS
UNIT
Supply Voltage
V+
15
V
Power Dissipation
P
D
300
mW
Operating Temperature
T
OPR
-40 ~ +85
°C
Storage Temperature
T
STR
-40 ~ +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.
ELECTRICAL CHARACTERISTICS
(T
A
=25°C, V
+
=9V, unless otherwise specified)
PARAMETER
Operating Voltage
Supply Current
Reference Voltage
Voltage Gain
Total Harmonic Distortion
Output Noise Voltage
Maximum Output Voltage
Cross Talk
Channel Separation
Switch-ON Voltage Level
Switch-OFF Voltage Level
SYMBOL
V
+
I
CC
V
REF
G
V
THD+N
V
NO
V
OM
CT
CS
V
CH
V
CL
TEST CONDITIONS
No Signal
V
IN
=1V
RMS
, f=1kHz
V
IN
=1V
RMS
, f=1kHz
A-Weighted
f=1KHz, THD=1%
V
IN
=1V
RMS
, f=1kHz, A-Weighted
V
IN
=1V
RMS
, f=1kHz, A-Weighted
6
2.0
70
70
2.4
-1
MIN
4.7
TYP
9.0
10
4.5
0
0.005
-110
3
8
2.5
90
90
MAX
13.0
20
1
0.05
-100
10
UNIT
V
mA
V
dB
%
dBV
V
RMS
dBV
V
RMS
dB
dB
V
V
0.8
SWITCH CONTROL LOGIC
CNT1
L
L
H
H
CNT2
L
H
L
H
INPUT SELECTOR Ach/Bch
IN1
IN2
IN3
IN4
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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UM2750
IN1a
10kΩ
10µF
0.1µF
10kΩ
10µF
0.1µF
IN1b
0.1µF
IN2b
0.1µF
IN4b
0.1µF
8
7
6
CNT2
4
0.1µF
CNT1
2
Preliminary
LINEAR INTEGRATED CIRCUIT
TYPICAL APPLICATION CIRCUIT
GND
4.7µF
100kΩ
IN2a
3
14
V+
100µF
IN3a
0.1µF
V
REF
10µF
11
OUTb
100kΩ
10
(N.C.)
IN3b
0.1µF
4.7µF
9V
1
16
15
OUTa
13
IN4a
5
12
9
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.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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嵌入式系统
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