TIGER ELECTRONIC CO.,LTD
Audio Limiter IC
NJM2761
DESCRIPTION
The
NJM2761
is the audio limiter for speaker
protection.
The
limi t
level
is
adjustab le
by
external resistor. It is suitable for PC, portable
audio and others.
SSOP10
D
FEATURE
Wide Operating Voltage
+2.7V to +13.0V
TSSOP14
Variable Limit Level by external resistor
0 .2 to 1 V
Low Output Noise
Bipolar Technology
-90dBV max
PIN CONFIGURATION
NJM2761 SSOP
NJM2761 TSSOP
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NJM2761
BLOCK DIAGRAM
A B S O L U T E M A X I M U M R AT I N G
(
Tamb=2 5℃
)
characteristics
Supply Vo ltage
Power Dissipation
Operating Temp erature Range
Storage Temp erature Range
Symbo l
V
+
P
D
Topr
Tstg
Value
14
320
-20~+75
-40~+125
Un it
V
mW
℃
℃
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NJM2761
ELECTRICAL CHARACTERISTICS
POWER SUPPLY(
Unless otherwise specified, Ta=2 5℃
,V
+
=5V)
characteristics
Operating Voltage
Operating Current
Reference Voltage
No Signal
No Signal
Test conditions
Symbol
V
+
Icc
Vref
2.2
Min.
2.7
Typ.
5.0
1.5
2.5
Max.
13.0
2.0
2.7
Unit
V
mA
V
AC CHARACTERISTICS(
Unless otherwise specified, Ta=2 5℃
,V
+
=5V,
VIN=1Vrms/f=1kHz,Rsense=20kΩ ,BW=400~30kHz)
characteristics
Limit level 1
Limit level 2
Limit off
Output noise
Total
harmonic
distortion
Cross talk
Ripple rejection
Vripple=100mVrms,f=1kHz
V
+
=13V,Rsense=4kΩ
SW=2V
Rs=0Ω
,A -wei ghting
VIN=2Vrms
Test conditions
Symbol
G
LIM1
G
LIM2
G
OFF
V
NO
THD+N
CT
RR
Min.
150
0.7
0.9
Typ.
200
1.0
1.0
-100
(10)
Max.
250
1.3
1.1
-90
(31.6)
1
-70
-70
(316)
Unit
mVrms
Vrms
Vrms
dBV
(µ Vrms)
%
dB
dBV
(µ Vrms)
CONTROL CHARACTERISTICS(
Unless otherwise specified, Ta=2 5℃
,V
+
=5V)
characteristics
Low level input voltage
High level input voltage
Test conditions
Symbol
VIL
VIH
2.0
Min.
Typ.
Max.
0.5
Unit
V
V
CONTROL TERMINAL EX PLANATION
SW(7pin)
MODE
Limiter ON
Limiter OFF
STATUS
L
H
NOTE
Limiter is active
Limiter is not active
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