NJM2761V [NJRC]
Consumer Circuit, Bipolar, PDSO14, SSOP-14;
| 型号： | NJM2761V |
| 厂家： | 
NEW JAPAN RADIO |
| 描述： | Consumer Circuit, Bipolar, PDSO14, SSOP-14 光电二极管 商用集成电路 |
| 文件： | 总8页 (文件大小：341K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
NJM2761
Audio Limiter
I GENERAL DESCRIPTION
I PACKAGE OUTLINE
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.
NJM2761RB2
NJM2761V
I FEATURES
G Wide Operating Voltage
+2.7V to +13.0V
G Variable Limit Level by external resistor 0.2 to1V
G Low Output Noise
G Bipolar Technology
G Package Outline
-90dBV max.
TVSP10, SSOP14
I BLOCK DIAGRAM
Vcc
Vref
INa
INb
OUTa
OUTb
SW
INT
SENSE
- 1 -
NJM2761
I PIN CONFIGURATION
TVSP10
1. V+
10
9
1
2
3
4
5
2. OUTa
3. INa
4. INT
5. VREF
6. SENCE
7. SW
8
7
8. INb
9. OUTb
10. GND
6
SSOP14
1. V+
1
2
3
4
5
6
7
14
13
12
11
2. OUTa
3. INa
4. INT
5. VREF
6. NC
7. NC
8. NC
9. NC
10
9
10. SENCE
11. SW
12. INb
13. OUTb
14. GND
8
- 2 -
NJM2761
IABSOLUTE MAXIMUM RATING (Ta=25°C)
PARAMETER
SYMBOL
V+
RATINGS
14
UNIT
V
Supply Voltage
Power Dissipation
PD
320
mW
°C
Operating Temperature Range
Storage Temperature Range
Topr
-20 to +75
-40 to +125
Tstg
°C
IELECTRICAL CHARACTERISTICS
G POWER SUPPLY (Ta=25°C, V+=5V unless otherwise specified)
PARAMETER
SYMBOL
V+
TEST CONDITION
MIN.
2.7
-
TYP.
5.0
MAX.
13.0
2.0
UNIT
V
Operating Voltage
-
Operating Current
Reference Voltage
ICC
No Signal
No Signal
1.5
mA
V
Vref
2.2
2.5
2.7
G AC CHARACTERISTICS
(Ta=25°C, V+=5V, VIN=1Vrms/f=1kHz, Rsense=20kΩ, BW=400-30kHz unless otherwise specified)
PARAMETER
SYMBOL
TEST CONDITION
MIN.
150
0.7
TYP.
200
1.0
MAX.
250
1.3
UNIT
mVrms
Vrms
Limit Level 1
GLIM1
Limit Level 2
Limit Off
GLIM2
V+=13V,Rsense=4kΩ,VIN=2Vrms
SW=2V
0.9
1.0
1.1
Vrms
GOFF
-100
(10)
-90
(31.6)
dBV
(µVrms)
RS=0Ω, A-weighting,
Output Noise
VNO
-
Total Harmonic Distortion
Cross Talk
THD+N
CT
-
-
-
1
%
-
-70
dB
dBV
(µVrms)
-70
Ripple Rejection
RR
Vripple=100mVrms, f=1kHz
-
-
(316)
G CONTROL CHARACTERISTICS (Ta=25°C, V+=5V unless otherwise specified)
PARAMETER
Low Level Input Voltage
High Level Input Voltage
Control Current
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX.
0.5
-
UNIT
V
VIL
-
-
-
2.0
-
-
-
-
VIH
V
Isw
SW=5V
100
µA
ICONTROL TERMINAL EXPLANATION
SW(TVSP10:7pin, SSOP14:10pin)
MODE
STATUS
NOTE
Limiter ON
L
Limiter is active.
Limiter OFF
H
Limiter is not active.
- 3 -
NJM2761
ITERMINAL DESCRIPTION
No
,
SYMBOL
FUNCTION
EQUIVALENT CIRCUIT
VOLTAGE
TVSP10(SSOP14)
1
V+
Power Supply Terminal
-
OUTa
OUTb
2
OUTa
OUTb
Ach Output Terminal
Bch Output Terminal
V+/2
V+/2
0.7V
V+/2
100
9(13)
1k
INa
INb
3
INa
INb
Ach Input Terminal
Bch Input Terminal
96k
8(12)
48k
INT
Smoothing Capacitor
Connection
400
4
5
INT
Terminal
300k
VREFIN
300k
Reference Voltage Stabilizing
Capacitor Connection Terminal
VREFIN
300k
- 4 -
NJM2761
ITERMINAL DESCRIPTION
No.
SYMBOL
TVSP10(SSOP14)
FUNCTION
EQUIVALENT CIRCUIT
VOLTAGE
12k
SENSE
Resister Connection Terminal
for Limit Level Setting
6(10)
SENSE
0V
SW
7(11)
SW
Limiter ON/OFF Switch
-
-
150k
270k
10(14)
GND
Ground Terminal
- 5 -
NJM2761
IAPPLICATION CIRCUIT
TVSP10
V+
0.22µF
GND
10
9
1
2
3
4
5
V+
1µF
1µF
OUTb
INb
OUTa
INa
0.22µF
0.22µF
8
0.022µF
SW
7
INT
0.22µF
SENSE
VREF
6
RSENSE
V
+
SSOP14
GND
1
V+
14
1uF
1uF
OUTb
INb
2
3
4
5
6
7
OUTa
INa
13
12
11
10
9
0.22uF
0.22uF
0.022uF
SW
INT
0.22uF
SENSE
VREF
RS E NS E
NC
NC
NC
NC
8
* The limit level is twice as much as set point when a signal is input into a either one channel of Ach or
Bch.
* For the above reason, monaural signal should input both INa and INb.
R
SENSE=4000/Vlim[Ohm]
Vlim:
Limit level(Vrms)
Limit range:
200mVrms to 1Vrms (20k to 4kOhm)
- 6 -
NJM2761
ITYPICAL CHARACTERISTICS
V+ - Icc
Icc-Temperature
V+=5V,No-Signal,Limiter=ON,Rsense=20k Ω
V+=5V,No-Signal,Limiter=ON,Rsense=20k Ω
2
1.5
1
2
1.5
1
0.5
0
0.5
0
0
5
10
15
-20
0
20
40
60
80
Temperature [Co]
Vcc[V]
Limit Response-V+
Limit Response-Rsense
V+=5V,f=1kHz,Limiter=ON
Vin=0dBV,Limiter=ON,Rsense=20k Ω
Rsense=4k
1
0.1
1
0.1
V+=5.0V
V+=2.7V
Rsense=8k
Rsense=20k
V+=13.0V
0.01
0.01
0.01
0.1
1
0.01
0.1
1
Input[Vrms]
Input[Vrms]
Limit Response-Temperature
Vom
V+=5V,Vin=0dBV,Limiter=ON,Rsense=20k
Ω
f=1kHz,Limiter=OFF,Rsense=20k Ω
10
1
1
V+=2.7V
V+=5.0V
75Co
-20Co
V+=13.0V
25Co
0.1
0.1
0.01
0.01
0.01
0.1
1
0.0001 0.001
0.01
0.1
1
Input[Vrms]
Input[Vrms]
- 7 -
NJM2761
ITYPICAL CHARACTERISTICS
THD-Vcc
THD-Temperature
V+=5V,Vin=0dBV,Limiter=ON,Rsense=20k
Ω
f=1kHz,Limiter=ON,Rsense=20k
Ω
10
1
10
1
V+=2.7V
V+=5.0V
V+=13.0V
-20Co
0.1
0.01
0.1
0.01
75Co
25Co
0.001
0.01
0.1
1
0.001
0.01
0.1
1
Input[Vrms]
Input[Vrms]
Ripple Rejection
Cross Talk
V+=5V,Vin=0dBV,Limiter=ON,Rsense=20k
Ω
V+=5V,Vripple=100mVrms,Limiter=ON
-60
-65
-70
-75
-80
-85
-90
-95
-100
0
-20
-40
25Co
25Co
-20Co
75Co
-60
-80
-20Co
75Co
-100
100
1000
Frequency[Hz]
10000
100
1000
10000
Frequency[Hz]
[CAUTION]
The specifications on this databook are only
given for information , without any guarantee
as regards either mistakes or omissions. The
application circuits in this databook are
described only to show representative usages
of the product and not intended for the
guarantee or permission of any right including
the industrial rights.
- 8 -
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