NJM2752
2-Input / 1-Output Stereo Audio Selector
s
GENERAL DESCRIPTION
The
NJM2752
is 2-Input / 1-Output Stereo Audio Selector.
The
NJM2752
consists of switches and buffer operational
amplifiers.
Based on the internal switch op-amp technology, the
NJM2752
features lower output noise, lower distortion and
higher channel separation than the general Multiplexers or
Analogue Switches.
The
NJM2752
contains compatibility with NJM2753 (3in-1out
SW),NJM2755 (4in-1out SW). It is suitable for LCD-TV/PDP-TV,
Car Stereo, and Any Audio System.
s
PACKAGE OUTLINE
NJM2752RB2
NJM2752V
s
FEATURES
q
Operating Voltage
q
2-Input / 1-Output Stereo Audio Selectors
q
Low Output Noise
q
Low Distortion
q
Bipolar Technology
q
Package Outline
4.7 to 10V
-114dBV typ.
0.0009% typ.
TVSP10,SSOP14
s
BLOCK DIAGRAM
LOGIC
CNT1
IN1A
IN1B
OUTA
IN2A
IN2B
OUTB
V＋
＋
Vref
Vref
GND
Ver.2.0
-1-
NJM2752
s
PIN CONFIGURATIONS
TVSP10,SSOP14
TVSP10
SSOP14
OUTB
IN1B
GND
IN2B
Vref
10
1
NJM2752RB2
1
OUTA
IN1A
V+
IN2A
CNT1
OUTA
IN1A
V+
IN2A
CNT1
N.C
N.C
OUTB
14
NJM2752V
2
9
2
IN1B
GND
IN2B
Vref
N.C
N.C
13
3
8
3
12
4
7
4
11
5
6
5
10
6
9
7
8
PIN.No.
(TVSP10)
PIN.No
.
(SSOP14)
1
2
3
4
5
6,7
8,9
SYMBOL
OUTA
IN1A
V+
IN2A
CNT1
N.C
FUNCTION
Ach Output Terminal
Ach Input Terminal1
Power Supply Terminal
Ach Input Terminal2
Control Switch Terminal1
No Connection
PIN.No.
(TVSP10)
PIN.No
.
(SSOP14)
10
11
12
13
14
SYMBOL
Vref
IN2B
GND
IN1B
OUTB
FUNCTION
Reference Terminal
Bch Input Terminal2
GND Terminal
Bch Input Terminal1
Bch Output Terminal
1
2
3
4
5
6
7
8
9
10
[Reference]
The NJM2752 contains compatibility with NJM2753 (3in-1out SW),NJM2755 (4in-1out SW).
NJM2753
NJM2755
1
OUTA
OUTB
14
1
OUTA
OUTB
16
NJM2753V
2
IN1A
V+
IN2A
CNT1
IN3A
CNT2
IN1B
GND
IN2B
Vref
IN3B
N.C
NJM2755V
13
2
IN1A
V+
IN2A
CNT1
IN3A
CNT2
IN4A
IN1B
GND
IN2B
Vref
IN3B
N.C
IN4B
15
3
12
3
14
4
11
4
13
5
10
5
12
6
9
6
11
7
8
7
10
8
9
-2-
NJM2752
s
ABSOLUTE MAXIMUM RATINGS (Ta=25°C)
PARAMETER
SYMBOL
Supply Voltage
V
+
RATING
12
TVSP10
1)
470
2)
640
SSOP14
1)
450
2)
570
UNIT
V
Power Dissipation
P
D
mW
NOTE 1): EIA/JEDEC STANDARD Test board (76.2x114.3x1.6mm, 2layer, FR-4) mounting
2): EIA/JEDEC STANDARD Test board (76.2x114.3x1.6mm, 4layer, FR-4) mounting
Operating Temperature Range
Storage Temperature Range
T
OPR
T
STR
-40 to +85
-40 to +150
°C
°C
s
ELECTRICAL CHARACTERISTICS ( Ta=25°C, V =9V)
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
Input Impedance
Output Impedance
s
SWITCH CONTROL LOGIC
CNT1 INPUT SELECTOR Ach / Bch
L
H
1
2
SYMBOL
V
+
+
TEST CONDITION
No Signal
Vin=1Vrms, f=1kHz
Vin=1Vrms, f=1kHz
A-Weighted
f=1kHz, THD=1%
Vin=1Vrms, f=1kHz,
A-Weighted
Vin=1Vrms, f=1kHz,
A-Weighted
MIN.
4.7
-
-
-1
-
-
-
6
(2.0)
70
80
2.4
-
-
-
TYP.
9.0
10
4.5
0
0.0009
-114
(2)
8
(2.5)
100
110
-
-
100
45
MAX.
10
15
-
1
0.03
-100
(10)
-
-
-
-
0.5
-
-
UNIT
V
mA
V
dB
%
dBV
(µVrms)
dBV
(Vrms)
dB
dB
V
V
kΩ
Ω
I
CC
V
REF
G
V
THD+N
V
NO
V
OM
CT
CS
V
CH
V
CL
R
IN
R
OUT
-3-
NJM2752
s
MEASUREMENT CIRCUIT (SSOP14)
10
µ
F
+
1
OUTA
OUTB
14
+
10
µ
F
10
µ
F
NJM2752
10
µ
F
+
2
IN1A
V+
IN2A
CNT1
N.C
N.C
IN1B
GND
IN2B
Vref
N.C
N.C
13
+
+
3
12
+
100
µ
F
10
µ
F
+
10
µ
F
10
µ
F
4
11
5
10
+
6
9
7
8
-4-
NJM2752
s
APPLICATION CIRCUIT (SSOP14)
10
µ
F
+
1
OUTA
OUTB
14
+
10
µ
F
10
µ
F
NJM2752
10
µ
F
+
2
IN1A
V+
IN2A
CNT1
N.C
N.C
IN1B
GND
IN2B
Vref
N.C
N.C
13
+
+
3
12
+
100
µ
F
10
µ
F
+
10
µ
F
10
µ
F
4
11
100k
5
10
+
1
µ
F
6
9
7
8
Application note:
Resistor(100k) and capacitor(1µF) connected to CNT1 are added to reduce pop-noise.
The value of input capacitor connected to IN1A and IN2A depends on cut-off frequency(calculated by fc=1/2πRC)
you need. R(input impedance)=100kΩ.
-5-
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