NJM2703RB2 [NJRC]
3D SURROUND AUDIO PROCESSOR FOR HEADPHONE; 3D环绕声音频处理器耳机
| 型号： | NJM2703RB2 |
| 厂家： | 
NEW JAPAN RADIO |
| 描述： | 3D SURROUND AUDIO PROCESSOR FOR HEADPHONE |
| 文件： | 总10页 (文件大小：180K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
NJM2703
3D SURROUND AUDIO PROCESSOR FOR HEADPHONE
■ GENERAL DESCRIPTION
■ PACKAGE OUTLINE
The NJM2703 is a high quality 3D surround audio processor
designed for headphone applications.
It includes mode control switch (Surround mode / Bypass
mode).
The NJM2703 features low operating voltage, low operating
current, low output noise and very small package, and is
suitable for any portable audio applications.
NJM2703RB2
■ FEATURES
■ Operating Voltage
■ Low Operating Current
■ Low Output Noise
1.8 to 6V
0.45mA typ. (at Surround mode, VR: max.)
10µV typ. (at Surround mode, VR: max.)
■ Variable Surround Effect by external resistor
■ Internal Mode Control Switch
■ Bipolar Technology
■ Package Outline
TVSP10
■ PIN CONFIGURATION
10
9
1
2
3
4
5
1. LIN
2. RIN
3. SW
4. VREF
5. GND
6. V+
7. NFR
8. NFL
9. ROUT
10. LOUT
8
7
6
■ BLOCK DIAGRAM
+
+
LOUT
LIN
3D
FILTER
-
ROUT
RIN
+
Bypass
Surround Mode
- 1 -
NJM2703
■ABSOLUTE MAXIMUM RATING (Ta=25°C)
PARAMETER
Supply Voltage
SYMBOL
V+
RATINGS
7
UNIT
V
Power Dissipation
PD
320
mW
Operating Temperature Range
Storage Temperature Range
Topr
-20 to +75
-40 to +125
°
C
C
Tstg
°
■OPERATING VOLTAGE
PARAMETER SYMBOL
TEST CONDITION
MIN.
1.8
TYP. MAX.
3.0 6.0
UNIT
V
Operating
V+
-
Voltage
■ELECTRICAL CHARACTERISTICS (V+=3V, Ta=25
°C unless otherwise specified)
TEST CONDITION
PARAMETER SYMBOL
MIN.
TYP. MAX.
UNIT
INPUT
OUTPUT
MODE
VR
L
0
R
0
Operating
Current
ICC
-
-
Bypass
-
-
-
0.45
0.45
0.7
0.7
No Signal
No Signal
mA
V
0
0
0
0
Surround
MAX
Reference
Voltage
Vref
-
-
-
1.0
1.15
1.3
■AC CHARACTERISTICS
(V+=3V, Ta=25
°
C, VIN=-20dBV(100mVrms), f=1kHz, RL=10k
Ω
, unless otherwise specified)
MIN.
TEST CONDITION
PARAMETER
SYMBOL
VIM
TYP.
MAX.
UNIT
INPUT
OUTPUT
MODE
VR
L
R
Maximum
Input Voltage
-2.0
(790)
f=1kHz
T.H.D.=1%
VIN
0
0
VIN
L
R
-
-
-
-
-
-
Bypass
-
-16.0
(160)
f=100Hz
T.H.D.=1%
VIN
0
0
VIN
L
R
MAX
Surround
Bypass
dBV
(mVrms)
V+=1.8V
f=1kHz
T.H.D.=1%
V+=1.8V
f=100Hz
T.H.D.=1%
-10.5
(300)
-8.5
(380)
VIN
0
0
VIN
L
R
-
-24.5
(60)
-22.5
(75)
VIN
0
0
VIN
L
R
MAX
-
Surround
Bypass
Output Noise
VNO
Rg=0
A-Weighted
Ω
L
R
-112
(2.5)
-106
(5.0)
0
0
0
0
-
-
-
-
dBV
(µVrms)
Rg=0
Ω
L
R
-100
(10)
-94
(20)
MAX
-
Surround
Bypass
A-Weighted
Total
Harmonic
Distortion
T.H.D
VIN
0
0
VIN
L
R
0.02
0.1
0.05
0.5
f=1kHz
%
VIN
0
0
VIN
L
R
MAX
f=1kHz
Surround
- 2 -
NJM2703
■AC CHARACTERISTICS
(V+=3V, Ta=25 C, VIN=-20dBV(100mVrms), f=1kHz, RL=10k
°
Ω
, unless otherwise specified)
MIN.
TEST CONDITION
PARAMETER SYMBOL
TYP.
MAX.
UNIT
dB
INPUT
OUTPUT
MODE
VR
L
R
Bypass Gain
GVBYP
VIN
0
0
VIN
L
R
f=1kHz
-
-1.0
12.5
10.5
0.5
0.0
14.5
12.5
2.5
1.0
16.5
14.5
4.5
Bypass
Surround Gain
GVSUR
VIN
0
0
VIN
L
R
f=100Hz
f=100Hz
f=100Hz
MAX
MAX
MIN
Surround
Surround
Surround
0
VIN
VIN
0
L
R
dB
VIN
0
0
VIN
L
R
■CONTROL CHARACTERISTICS (V+=3V, Ta=25
°C unless otherwise specified)
TEST CONDITION
PARAMETER SYMBOL
Mode Select
MIN.
TYP.
MAX.
UNIT
V
INPUT
OUTPUT
MODE
VR
L
R
V =
High Level
IN
1.2
0.0
-
-
V+
-
-
-
-
-
-
-
-
Control
Voltage
VMODE
V =
IN
0.3
-
-
Low Level
■MODE SWITCH
MODE
Bypass
SW
L, open
H
NOTES
Input Through
Surround Mode (Stereo Input)
Surround
- 3 -
NJM2703
■TERMINAL DESCRIPTION
PIN NO.
SYMBOL
FUNCTION
EQUIVALENT CIRCUIT
VOLTAGE
V+
V+
V+
1
2
LIN
RIN
Rch Input
Lch Input
1.15V
700
VREF
V+
V+
V+
3
SW
Mode control switch
Reference voltage
GND
0V
1.15V
0V
700
V+
V+
V+
4
VREF
5
GND
- 4 -
NJM2703
PIN NO.
SYMBOL
FUNCTION
EQUIVALENT CIRCUIT
VOLTAGE
5
V+
Power Supply
V+
V+
V+
7
8
NFL
NFR
Filter terminal
Filter terminal
1.15V
400
V+
V+
V+
V+
9
10
ROUT
LOUT
Rch Output
Lch Output
1.15V
12k
- 5 -
NJM2703
■APPLICATION CIRCUIT
Lch IN
Rch IN
SW
LIN
LOUT
ROUT
NFL
Lch OUT
Rch OUT
10
9
1
2
3
4
5
10
10
µ
µ
10
10
µ
µ
RIN
SW
8
MAX
4.7k
100k
1
1
µ
µ
MIN
VREF
GND
NFR
V+
7
VR 50kB
100
µ
6
V+(3V)
- 6 -
NJM2703
■TYPICAL CHARACTERISTICS
Supply Current vs. Supply Voltage
Ta=25degrees
Supply Current vs. Ambient Temperature
V+=3V
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
BYPASS
Surround
Surround
BYPASS
0
1
2
3
4
5
6
7
-50
-25
0
25
50
75
100
125
Supply Voltage [V]
Ambient Temperature [degrees]
Reference Voltage vs. Supply Voltage
Reference Voltage vs. Ambient Temperature
V+=3V
Ta=25degrees
3.5
3
1.3
1.25
1.2
2.5
2
1.15
1.1
1.5
1
1.05
1
0.5
0
0
1
2
3
4
5
6
7
-50
-25
0
25
50
75
100
125
Supply Voltage [V]
Ambient Temperature [degrees]
Maximum Input Voltage vs. Supply Voltage (BYPASS)
Maximum Input Voltage vs. Supply Voltage (Surround)
Vin=Lch f=1kHz Vout=Lch RL=10kohm
Vin=Lch f=100Hz Vout=Lch RL=10kohm VR=MAX
THD=1% Ta=25degrees
10
THD=1% Ta=25degrees
-5
5
0
-10
-15
-20
-25
-30
-5
-10
-15
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
Supply Voltage [V]
Supply Voltage [V]
- 7 -
NJM2703
■TYPICAL CHARACTERISTICS
Maximum Input Voltage vs. Ambient Temperature (BYPASS)
Maximum Input Voltage vs. Ambient Temperature (Surround)
V+=3V Vin=Lch f=1kHz Vout=Lch RL=10kohm
THD=1%
V+=3V Vin=Lch f=100Hz Vout=Lch RL=10kohm
VR=MAX THD=1%
-15
0
-1
-2
-3
-4
-5
-16
-17
-18
-19
-20
-50
-25
0
25
50
75
100
125
-50
-25
0
25
50
75
100
125
Ambient Temperature [degrees]
Ambient Temperature [degrees]
Maximum Input Voltage vs. Ambient Temperature (BYPASS)
Maximum Input Voltage vs. Ambient Temperature (Surround)
V+=1.8V Vin=Lch f=1kHz Vout=Lch RL=10kohm
V+=1.8V Vin=Lch f=100Hz Vout=Lch RL=10kohm
THD=1%
VR=MAX THD=1%
-20
-5
-6
-7
-21
-22
-23
-24
-25
-8
-9
-10
-50
-25
0
25
50
75
100
125
-50
-25
0
25
50
75
100
125
Ambient Temperature [degrees]
Ambient Temperature [degrees]
Output Noise Voltage vs. Ambient Temperature
Output Noise Voltage vs. Ambient Temperature
V+=3V Rg=0ohm Vout=Lch VR=MAX
FILTER=A-Weighted
V+=3V Rg=0ohm Vout=Rch VR=MAX
FILTER=A-Weighted
-90
-90
-95
-100
-105
-110
-115
-120
-95
-100
-105
-110
-115
-120
Surround
BYPASS
Surround
BYPASS
-50
-25
0
25
50
75
100
125
-50
-25
0
25
50
75
100
125
Ambient Temperature [degrees]
Ambient Temperature [degrees]
- 8 -
NJM2703
■TYPICAL CHARACTERISTICS
Total Harmonic Distortion vs. Input Voltage (BYPASS)
Total Harmonic Distortion vs. Input Voltage (Surround)
V+=3V Vin=Lch f=1kHz Vout=Lch
RL=10kohm BW=10Hz to 80kHz
V+=3V Vin=Lch f=100Hz Vout=Lch
RL=10kohm BW=10Hz to 80kHz VR=MAX
10
1
10
1
Ta=75deg.
Ta=25deg.
Ta=-20deg.
0.1
Ta=75deg.
Ta=25deg.
Ta=-20deg.
0.1
0.01
0.01
0.001
-50
-40
-30
-20
-10
0
-50
-40
-30
-20
-10
0
10
Input Voltage [dBV]
Input Voltage [dBV]
Voltage Gain vs. Frequency (BYPASS)
Voltage Gain vs. Frequency (Surround)
V+=3V Vin=-20dBV Lch Vout=Lch
RL=10kohm Rg=25ohm
V+=3V Vin=-20dBV Lch Vout=Lch
RL=10kohm Rg=25ohm VR=MAX
1
0.5
0
20
15
10
5
Ta=75deg.
Ta=25deg.
Ta=-20deg.
Ta=-20deg.
Ta=25deg.
Ta=75deg.
-0.5
-1
0
-5
10
100
1000
104
105
10
100
1000
104
105
Frequency [Hz]
Frequency [Hz]
Voltage Gain vs. Frequency (Surround)
Voltage Gain vs. Frequency (Surround)
V+=3V Vin=-20dBV Rch Vout=Lch
RL=10kohm Rg=25ohm VR=MAX
V+=3V Vin=-20dBV Lch Vout=Lch
RL=10kohm Rg=25ohm VR=MIN
15
10
5
20
15
10
5
Ta=75deg.
Ta=25deg.
Ta=-20deg.
Ta=75deg.
Ta=25deg.
Ta=-20deg.
0
-5
0
-10
-5
10
100
1000
104
105
10
100
1000
104
105
Frequency [Hz]
Frequency [Hz]
- 9 -
NJM2703
■TYPICAL CHARACTERISTICS
Voltage Gain vs. SW Terminal Input Voltage
Output DC Offset Voltage vs. Ambient Temperature
V+=3V Vin=-20dBV Lch f=100Hz Vout=Lch VR=MAX
BYPASS to Surround
V+=3V
BYPASS to Surround
10
20
15
10
5
5
Lch
0
Ta=75deg.
Ta=25deg.
Ta=-20deg.
Rch
-5
0
-5
-10
0
0.5
1
1.5
2
-50
-25
0
25
50
75
100
125
SW Terminal Input Voltage [V]
Ambient Temperature [degrees]
[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.
- 10 -
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