NJM2761
Audio Limiter
GENERAL DESCRIPTION
The
NJM2761
is the audio limiter for speaker protection.
The limit level is adjustable by external resistor.
It is suitable for PC, potable audio and others.
PACKAGE OUTLINE
NJM2761RB2
NJM2761V
FEATURES
Wide Operating Voltage
Variable Limit Level by external resistor
Low Output Noise
Bipolar Technology
Package Outline
+2.7V to +13.0V
0.2 to1V
-90dBV max.
TVSP10, SSOP14
BLOCK DIAGRAM
Vcc
Vref
INa
OUTa
INb
OUTb
SW
INT
SENSE
Ver.0.5E
-1-
NJM2761
ABSOLUTE
MAXIMUM RATING
(Ta=25C)
PARAMETER
Supply Voltage
Power Dissipation
Operating Temperature Range
Storage Temperature Range
SYMBOL
V
+
RATINGS
14
320(TVSP10)
300(SSOP14)
-20 to +75
-40 to +125
UNIT
V
mW
C
C
P
D
T
opr
T
stg
ELECTRICAL
CHARACTERISTICS
+
POWER SUPPLY
(Ta=25C, V =5V unless otherwise specified)
PARAMETER
Operating Voltage
Operating Current
Reference Voltage
SYMBOL
V
+
TEST CONDITION
-
No Signal
No Signal
MIN.
2.7
-
2.2
TYP.
5.0
1.5
2.5
MAX.
13.0
2.0
2.7
UNIT
V
mA
V
I
CC
Vref
AC CHARACTERISTICS
+
(Ta=25C, V =5V, V
IN
=1Vrms/f=1kHz, Rsense=20k, BW=400-30kHz unless otherwise specified)
PARAMETER
Limit Level 1
Limit Level 2
Limit Off
Output Noise
Total Harmonic Distortion
Cross Talk
Ripple Rejection
SYMBOL
G
LIM1
G
LIM2
G
OFF
V
NO
THD+N
CT
RR
V
ripple
=100mVrms, f=1kHz
+
TEST CONDITION
MIN.
150
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
(Vrms)
%
dB
dBV
(Vrms)
V =13V,Rsense=4k,V
IN
=2Vrms
SW=2V
R
S
=0, A-weighting,
+
0.7
0.9
-
-
-
-
CONTROL CHARACTERISTICS
(Ta=25C, V =5V unless otherwise specified)
PARAMETER
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX.
UNIT
Low Level Input Voltage
High Level Input Voltage
V
IL
V
IH
-
-
-
2.0
-
-
0.5
-
V
V
CONTROL
TERMINAL EXPLANATION
SW(TVSP10:7pin, SSOP14:11pin)
MODE
Limiter ON
Limiter OFF
STATUS
L
H
Limiter is active.
Limiter is not active.
NOTE
-3-