NJM2155M [NJRC]
BBE Mach3Bass Audio Processor; BBE Mach3Bass则音频处理器
| 型号： | NJM2155M |
| 厂家： | 
NEW JAPAN RADIO |
| 描述： | BBE Mach3Bass Audio Processor |
| 文件： | 总7页 (文件大小：63K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
NJM2155
PRELIMINARY
BBE Mach3Bass Audio Processor
■PACKAGE OUTLINE
■GENERAL DESCRIPTION
NJM2155 is a BBE Mach3Bass processor, which includes
BBE sound enhancement and Mach3Bass system.
The BBE reproduces high definitive and Mach3BASS
provides rich and loss less bass sound.
The NJM2155 is suitable for audio items such as TV, AV
receiver, CD radio-cassette, speaker system, and others.
NJM2155L
NJM2155M
■FEATURES
■Operating Voltage
■Low Operating Current
4.7 to 13V
15mA typ.
■Internal Mach3Bass ON/OFF Switch
■Internal High/Low Boost Switch
(Low Band: 2.5 or 5.5dB, High Band: 6.0 or 9.0dB)
■”Mach3Bass” Boot Switch and Center Frequency Control
■Bipolar Technology
■Package Outline
SDIP24, DMP24
■BLOCK DIAGRAM & PIN CONFIGRATION
1. InA
2. HInA
3. HOutA
4. LInA
5. LOutA
6. OutA
24
23
22
21
20
19
18
17
16
15
14
13
7. Filter
BBE
Mach3
Bias
8. BBE
9. PROCESS
10. LO CONTOUR
11. Mach3Bass
12. V+
13. GND
14. LPOut
15. LPIn
BBE
Control
16. GOut
17. GIn
18. Vref
1
2
3
4
5
6
7
8
9
10
11
12
19. OutB
20. LOutB
21. LInB
22. HOutB
23. HInB
24. InB
- 1 -
NJM2155
■ABSOLUTE MAXIMUM RATING (Ta=25°C)
PARAMETER
Supply Voltage
SYMBOL
TEST CONDITION
15
UNIT
V
V+
Power Dissipation
Operating Temperature Range
Storage Temperature Range
PD
Topr
Tstg
700
-40 to +85
-40 to +125
mW
°C
°C
■ELECTRICAL CHARACTERISTICS (Ta=25°C, V+=9V, Rg=600Ω, RL=47kΩ, Vin=100mVrms/1kHz,
VR1 1) =500Ω, VR2 1) =36kΩ)
TEST CONDITION
BBE
SYMBOL
PARAMETER
MIN TYP
MAX
UNIT
Mach3
V+
Icc
-
-
-
-
4.5
-
9.0
8.0
4.5
-
13.0
V
mA
V
Operating Voltage
Operating Current
Reference Voltage
BYPASS
No Signal
V+/2
-
5.0
-
VREF
VIM
-
4.0
2.8
Maximum Input
Voltage
BYPASS
f=1kHz
-
-
-
-
-
Vrms
f=20Hz,
LO CONTOUR=L
f=20Hz,
LO CONTOUR=H
Boost1
Boost2
ON
1.5
4.5
0.0
5.0
8.0
2.5
5.5
0.6
6.0
9.0
3.5
6.5
1.2
7.0
ON
ON
ON
ON
Boost Level
dB
Boost3 f=1kHz
f=20kHz,
Boost4
PROCESS=L
f=20kHz,
PROCESS=H
Boost5
-
10.0
13.0
1.0
Mach3 Boost
Bypass Gain
Mach3 fc=80Hz
ON
ON
-
11.0 12.0
dB
dB
%
BYPASS
GVBYP
THD
f=1kHz
f=1kHz
-1.0
-
0.0
Total Harmonic
Distortion
ON
ON
ON
0.05
0.11
dBV
(µVrms)
Vin=GND
A-Weighting
-94
(20)
-84
(63)
Output Noise
VNO
ON
-
VIH
VIL
Vin=High Level
Vin=Low Level
2.0
0
-
-
V+
Mode Select Control
Voltage
V
0.5
1), 2): Refer to APPLICATION CIRCUIT
■SWITCH FUNCTION
Control
Voltage Level
Switch Terminal
FUNCTION
Low
High
Low
High
Low
High
Low
High
BYPASS
BBE ON
BBE
Mach3Bass OFF (with BBE switch on)
Mach3Bass ON (with BBE switch on)
Low Frequency: +2.5dB Boost (with BBE switch on)
Low Frequency: +5.5dB Boost (with BBE switch on)
High Frequency: +6.0dB Boost (with BBE switch on)
High Frequency: +9.0dB Boost (with BBE switch on)
Mach3Bass
LO CONTOUR
PROCESS
- 2 -
NJM2155
■TERMINAL DESCRIPTION
No
SYMBOL
FUNCTION
EQUIVALENT CIRCUIT
V+
VOLTAGE
V+
1
24
InA
InB
Audio Signal Input (Ach)
Audio Signal Input (Bch)
V+/2
V+/2
V+/2
V+/2
1,24
48k
Vref
V+
V+
V+
2,4,21,23
2
4
21
23
HinA
LinA
LinB
HinB
BBE High Pass Filter Input (Ach)
BBE Low Pass Filter Input (Ach)
BBE Low Pass Filter Input (Bch)
BBE High Pass Filter Input (Bch)
21.5k
V+
V+
3
5
6
14
16
18
19
20
22
HOutA
LOutA
OutA
LPOut
GOut
Vref
OutB
LOutB
HOutB
BBE High Pass Filter Output (Ach)
BBE Low Pass Filter Output (Ach)
Audio Signal Output (Ach)
Mach3Bass Filter Output
Output for Mach3Bass Gain Adjustment
Reference Voltage Output
3,5,6,14,16
18,19,20,22
Audio Signal Output (Bch)
BBE Low Pass Filter Output (Bch)
BBE High Pass Filter Output (Bch)
V+
V+
7
Filter
Reference Voltage Filter
7
- 3 -
NJM2155
■TERMINAL DESCRIPTION
No
SYMBOL
FUNCTION
EQUIVALENT CIRCUIT
V+
VOLTAGE
V+
8
9
BBE
PROCESS
BBE ON/OFF Control
Boost Level Control for High Band
Boost Level Control for Low Band
Mach3Bass ON/OFF Control
0V
10 LO CONTOUR
11 Mach3
8,9,10,11
100k
V+
V+
15
LPIn
Mach3Bass Filter Input
V+/2
15
V+
V+
V+
17
12k
17
Gin
Input for Mach3Bass Gain Adjustment
V+/2
12
13
V+
Power Supply
V+
0V
GND
GND
- 4 -
NJM2155
■APPLICATION CIRCUIT
Frequency Control
VR1
C17
Low
High
5k
Boost
Control
µ
0.22
C16
R5
1k
+
C11
+
C12
3.3n
C13
33n
C15
C14
R6
27k
µ
0.22
R7
+
µ
µ
0.1
4.7
µ
4.7
VR2
Max Min
50k
56k
24
23
22
21
20
19
18
17
16
15
14
13
NJM2155
1
2
3
4
5
6
7
8
9
10
11
12
R1
R2
R3
R4
C2
C3
C6
+
C7
+
C8
+
C9
+
C10 +
C1
C4
C5
+
+
+
µ
10
µ
10
µ
10
µ
10
µ
10
3.3n
33n
µ
4.7
µ
10
µ
4.7
10k
10k
10k
10k
V+
V+ GND V+ GND V+ GND V+ GND
1) C2, C3, C12 and C13 decide the BBE characteristics. Use the specified value.
2) C16, C17, R5, R6 and R7 decide the Mach3Bass characteristics. Use the specified value.
3) VR1 controls Center Frequency for Mach3Bass.
4) VR2 controls Boost Gain for Mach3Bass.
- 5 -
NJM2155
■TYPICAL CHARACTERISTICS
BBE Frequency Characteristics
BBE Frequency Characteristics
(V+=9V, Ta=25°C)
(V+=9V, Ta=25°C)
200
150
100
50
20
18
16
14
12
10
8
C
C
A
°
0
B
A
-50
-100
-150
-200
6
4
B
2
0
-2
10
100
1,000
10,000
100,000
10
100
1,000
10,000
100,000
Frequency[Hz]
Frequency[Hz]
A: BYPASS
A: BYPASS
B: PROCESS=L, LO CONTOUR=L
C: PROCESS=H, LO CONTOUR=H
B: PROCESS=L, LO CONTOUR=L
C: PROCESS=H, LO CONTOUR=H
BBE Mach3Bass frequency Characteristics
BBE Mach3Bass frequency Characteristics
(V+=9V, Ta=25°C, BBE=ON, PROCESS=H, LO CONTOUR=H, Mach3=ON)
(V+=9V, Ta=25°C, BBE=ON, PROCESS=L, LO CONTOUR=L, Mach3=ON)
20
20
18
18
16
14
12
10
8
16
C
D
14
12
B
10
C
8
B
6
6
A
4
2
4
2
A
0
0
-2
-2
10
100
1,000
10,000
100,000
10
100
1,000
Frequency[Hz]
10,000
100,000
Frequency[Hz]
A: f=40Hz, VR1=6kΩ
C: f=80Hz, VR1=500Ω
B: f=60Hz, VR1=2kΩ
A: 3.5dB, VR2=0kΩ
C: 12dB, VR2=18kΩ
B: 6dB, VR2=6.2kΩ
D: 12dB, VR2=36kΩ
- 6 -
NJM2155
■NOTE
BBE is a registered trademark of BBE Sound Inc.
A license from BBE Sound Inc. is required before the NJM2155 can be purchased from New Japan
Radio Co., Ltd.
BBE Sound, Inc.
5381 Production Drive
Huntington Beach, CA 92649
Tel:(714)897-6766
Fax:(714)896-0736
[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.
- 7 -
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