NJRC NJM2155M Bbe mach3bass audio processor Datasheet

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
4.7 to 13V
●Low Operating Current
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
24
23
22
21
20
19
18
17
BBE
16
15
14
13
11
12
Mach3
Bias
BBE
1
2
3
Control
4
5
6
7
8
9
10
1. InA
2. HInA
3. HOutA
4. LInA
5. LOutA
6. OutA
7. Filter
8. BBE
9. PROCESS
10. LO CONTOUR
11. Mach3Bass
12. V+
13. GND
14. LPOut
15. LPIn
16. GOut
17. GIn
18. Vref
19. OutB
20. LOutB
21. LInB
22. HOutB
23. HInB
24. InB
- 1 -
NJM2155
■ ABSOLUTE MAXIMUM RATING (Ta=25°C)
PARAMETER
SYMBOL
+
Supply Voltage
V
Power Dissipation
PD
Operating Temperature Range
Topr
Storage Temperature Range
Tstg
TEST CONDITION
15
700
-40 to +85
-40 to +125
UNIT
V
mW
°C
°C
+
■ELECTRICAL CHARACTERISTICS (Ta=25°C, V =9V, Rg=600Ω, RL=47kΩ, Vin=100mVrms/1kHz,
VR1∗1) =500Ω, VR2∗1) =36kΩ)
PARAMETER
TEST CONDITION
SYMBOL
Operating Voltage
V
Operating Current
Icc
Reference Voltage
VREF
V /2
VIM
f=1kHz
+
Maximum Input
Voltage
Boost1
Boost2
Boost Level
Boost3
Boost4
Boost5
No Signal
+
f=20Hz,
LO CONTOUR=L
f=20Hz,
LO CONTOUR=H
f=1kHz
f=20kHz,
PROCESS=L
f=20kHz,
PROCESS=H
MIN
TYP
MAX
UNIT
-
4.5
9.0
13.0
V
BYPASS
-
-
8.0
-
mA
-
-
4.0
4.5
5.0
V
BYPASS
-
2.8
-
-
Vrms
ON
-
1.5
2.5
3.5
ON
-
4.5
5.5
6.5
ON
-
0.0
0.6
1.2
ON
-
5.0
6.0
7.0
ON
-
8.0
9.0
10.0
ON
ON
11.0
12.0
13.0
dB
BBE
Mach3
-
dB
Mach3 Boost
Mach3
fc=80Hz
Bypass Gain
GVBYP
f=1kHz
BYPASS
-
-1.0
0.0
1.0
dB
Total Harmonic
Distortion
THD
f=1kHz
ON
ON
-
0.05
0.11
%
Output Noise
VNO
Vin=GND
A-Weighting
ON
ON
-
-94
(20)
-84
(63)
dBV
(µVrms)
Mode Select Control
Voltage
VIH
Vin=High Level
2.0
-
V
VIL
Vin=Low Level
0
-
0.5
V
∗1), ∗2): Refer to APPLICATION CIRCUIT
■SWITCH FUNCTION
Switch Terminal
BBE
Mach3Bass
LO CONTOUR
PROCESS
-2-
+
Control
Voltage Level
Low
High
Low
High
Low
High
Low
High
FUNCTION
BYPASS
BBE ON
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)
NJM2155
■TERMINAL DESCRIPTION
No
SYMBOL
FUNCTION
EQUIVALENT CIRCUIT
V+
1
24
InA
InB
Audio Signal Input (Ach)
Audio Signal Input (Bch)
VOLTAGE
V+
V+/2
1,24
48k
Vref
V+
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)
V+
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
Audio Signal Output (Bch)
BBE Low Pass Filter Output (Bch)
BBE High Pass Filter Output (Bch)
V+
21.5k
V+/2
V+
3
5
6
14
16
18
19
20
22
2,4,21,23
V+
V+/2
3,5,6,14,16
18,19,20,22
V+
7
Filter
Reference Voltage Filter
7
100k
100k
V+
V+/2
- 3 -
NJM2155
■TERMINAL DESCRIPTION
No
SYMBOL
FUNCTION
EQUIVALENT CIRCUIT
V+
8
9
10
11
BBE
PROCESS
LO CONTOUR
Mach3
BBE ON/OFF Control
Boost Level Control for High Band
Boost Level Control for Low Band
Mach3Bass ON/OFF Control
VOLTAGE
V+
0V
8,9,10,11
100k
V+
15
LPIn
V+
Mach3Bass Filter Input
V+/2
15
V+
V+
17
V+
12k
17
Gin
Input for Mach3Bass Gain Adjustment
V+/2
12
V+
Power Supply
V+
13
GND
GND
0V
-4-
NJM2155
■ APPLICATION CIRCUIT
Frequency Control
VR1
Low
High
C13
C14
C15
3.3n
33n
4.7µ
+ 0.1µ
R5
1k
+
5k
Boost
Control
0.22µ
C16
R6
27k
VR2
0.22µ
R7
LInB
18
17
16
15
LPIn
HOutB
19
GOut
HInB
20
56k
GIn
21
Vref
22
OutB
23
LOutB
24
InB
Max Min
50k
13
InA
HInA
HOutA
LInA
LOutA
OutA
Filter
BBE
PROCESS
LO CONTOUR
Mach3
V+
NJM2155
14
GND
+
4.7µ
C12
LPOut
C11
C17
1
2
3
4
5
6
7
8
9
10
11
12
C1
4.7µ
+
C2
3.3n
C3
33n
C4
4.7µ
+
C5
10µ
+
R1
R2
C6 +
10µ
10k
R3
C7 +
10µ
10k
R4
C8 +
C9 +
10µ
10k
C10 +
10µ
10µ
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)
200
20
18
16
14
12
10
8
6
4
2
0
-2
150
C
100
C
50
Phase[ ]
Gain[dB]
(V+=9V, Ta=25°C)
°
B
A
A
0
-50
B
-100
-150
10
100
1,000
10,000
-200
100,000
10
100
1,000
Frequency[Hz]
A: BYPASS
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=L, LO CONTOUR=L, Mach3=ON)
C
Gain[dB]
Gain[dB]
(V+=9V, Ta=25°C, BBE=ON, PROCESS=H, LO CONTOUR=H, Mach3=ON)
B
A
10
100
1,000
10,000
Frequency[Hz]
A: f=40Hz, VR1=6kΩ
C: f=80Hz, VR1=500Ω
-6-
100,000
Frequency[Hz]
A: BYPASS
B: PROCESS=L, LO CONTOUR=L
C: PROCESS=H, LO CONTOUR=H
20
18
16
14
12
10
8
6
4
2
0
-2
10,000
B: f=60Hz, VR1=2kΩ
100,000
20
18
16
14
12
10
8
6
4
2
0
-2
D
C
B
A
10
100
1,000
10,000
Frequency[Hz]
A: 3.5dB, VR2=0kΩ
C: 12dB, VR2=18kΩ
B: 6dB, VR2=6.2kΩ
D: 12dB, VR2=36kΩ
100,000
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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