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NJM2151A
MONAURAL POWER AMP. & HEADPHONE POWER AMP. IC
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GENERAL DESCRIPTION
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PACKAGE OUTLINE
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FEATURES
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Operating Voltage (2.7V to 9.0V)
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Electric Volume Function (Headphone Amplifier)
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LINE Input Mode
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System BEEP Input (Headphone)
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BEEP Level Control Function
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BEEP Input (Monaural Amplifier)
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Suspend Mode (Monaural Amplifier , Headphone Amplifier)
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Mute Mode (Headphone Amplifier)
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Bipolar Technology
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Package Outline NJM2151A: DMP20,SSOP20,SSOP20-F1
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PIN CONFIGURATION
1
2
3
4
5
12
13
14
6
7
11
10
9
8
15
16
17
18
19
20
PIN CONFIGURATION
1. EVR
2. LINE IN L
3. MUTE
4. LINE IN R
5. BEEP BIAS
6. SYS.BEEP IN
7. SP.IN
8. BEEP IN
9. HP.SUSPEND
10.SP.SUSPEND
11.SP.GND
12.LM
13.SP.OUT 2
14.SP.OUT 1
15.BEEP LEVEL
16.SP.V
+
17.HP.GND
18.HP.OUT R
19.HP.OUT L
20.HP.V
+
The NJM2151A is a monaural audio power amplifier and
stereo headphone amplifier for wide voltage operation.
The NJM2151A was stereo headphone power amplifier
for low distortion single-end output , and monaural power
amplifier for high power bridge(BTL).
The NJM2151A operate low voltage supply , low
operating current and low power-down current.
The NJM2151A includes MUTE , SUSPEND mode, and
suitable for NOTE PC, PDA, CAMCODER, and other
battery equipment.
The NJM2151AVF1 is packaged in the power package.
NJM2151AM
NJM2151AV
NJM2151AVF1
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NJM2151A
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ABSOLUTE MAXIMUM RATINGS
(Ta=25
C)
PARAMETER
SYMBOL
RATINGS
UNIT
Supply Voltage
V
+
15
V
Power Dissipation
P
D
(DMP) 375
(SSOP) 375
(SSOP-F1) 750
mW
Operating Temperature Range
Topr
-40 to +85
C
Storage Temperature Range
Tstg
-50 to +150
C
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RECOMMENDED OPERATING CONDITIONS
(Ta=25
C)
PARAMETER
SYMBOL
TEST CONDITION
UNIT
Operating Voltage
Vopr
+2.7 to +9.0
V
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ELECTRICAL CHARACTERISTICS (HP V
+
=SP, V
+
=5V,Ta=25
C)
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Operating Current
PARAMETER
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX.
UNIT
Operating Current
Iq
No Signal :IqHP+IqSP
-
3.0
5.0
mA
Operating Current
(Suspend Mode)
Iqs
No Signal :IqHP+IqSP,V
HS
=L,V
SS
=L
-
252
422
A
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HEADPHONE 1 (INPUT:LINE IN L/R,OUTPUT:HP OUT L/R)
PARAMETER
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX.
UNIT
Output Voltage Level
Vohp1
Vin=-10.0dBV
-7.4
-4.0
-1.5
dBV
Total Harmonic Distortion THDhp
Vin=-10.0dBV (note1)
-
0.1
1.0
%
EVR Adjustable Range
Gevr
Vin=-10.0dBV (note2),
Vevr=HP V
+
GND
70
90
-
dB
Maximum Output Level
Vomhp
THD=1% (note1)
-1.6
+0.6
-
dBV
Output Remain
Vonhp
Rg=1k
(note2)
-
-80
-73
dBV
Crosstalk
CThp
Vin=-10dBV (note2)
-
-79
-70
dBV
Muting Level
MThp
Vin=-10dBV:V
M
=H (note2)
-
-94
-83
dBV
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HEADPHONE 2 (INPUT:SYSTEM BEEP IN,OUTPUT:HP OUT L/R)
PARAMETER
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX.
UNIT
Output Voltage Level
Vohp2
Vin=3.0Vp-p
0.22
0.32
0.42
Vp-p
Input Threshold Level
V
THHP
4.50
-
5.00
Vp-p
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NJM2151A
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SPEAKER AMP1 (INPUT:SP IN,OUTPUT:SP OUT1/2)
PARAMETER
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX.
UNIT
Output Voltage Level
Vosp
Vin=-10.0dBV
-1.4
+2.0
+4.5
dBV
Total Harmonic Distortion THDsp
Vin=-10.0dBV (note1)
-
0.7
2.0
%
Maximum Output Level
V
OM
sp
THD=3% (note1)
+3.5
+5.7
-
dBV
Output Remain Noise
Vonsp
Rg=1k
(note2)
-
-82
-78
dBV
Line Mix Off Level
Vooffsp
Vin=-12dBV,V
L
=H (note2)
-
-78
-70
dBV
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SPEAKER AMP2 (INPUT:PM BEEP IN,OUTPUT:SP OUT 1/2)
PARAMETER
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX
UNIT
Output Level
Vosp2
Vin=-10.0dBV
-7.4
-4.0
-1.5
dBV
(noet1):B.W.=0.4 to 30kHz ,(note2):CCIR
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CONTROL BLOCK
MUTE CONTROL (3pin:MUTE-CTRL)
PARAMETER
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX.
UNIT
HP Mute Off
V
ML
GND
-
0.4
V
HP Mute On
V
MH
1.5
-
V
+
V
HEADPHONE SUSPEND CONTROL (9pin:HPSUS-CTRL)
PARAMETER
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX.
UNIT
HP Suspend On
V
HPSL
GND
-
0.4
V
HP Suspend Off
V
HPSH
1.5
-
V
+
V
SPEAKER SUSPEND Control (10pin:SPSUS-CTRL)
PARAMETER
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX.
UNIT
SP Suspend On
V
SPSL
GND
-
0.4
V
SP Suspend Off
V
SPSH
1.5
-
V
+
V
LINE MIX ON/OFF Control (12pin:LINE MIX ON/OFF CTRL)
PARAMETER
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX.
UNIT
Line Mix On
V
LL
GND
-
0.4
V
Line Mix Off
V
LH
1.5
-
V
+
V
(Note) Unless specified, tested with next mode below.
FUNCTION
SYMBOL PIN.No
CONDITION
STATUS
EVR Control
Vevr
1pin
Vevr=V
+
EVR=Max
Mute Control
VM
3pin
V
M
=L
Mute Off
Headphone Suspend Control
V
HS
9pin
V
HS
=H
Suspend Off
Speaker Suspend Control
V
HS
10pin
V
SS
=H
Suspend Off
Line Mix Control
V
L
12pin
V
L
=L
Line Mix On
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NJM2151A
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BLOCK DIAGRAM
20 19 18 17 16 15 14 13 12 11
VR
+
VR
SP.
SUSPEND
SP.V
+
HP.V
+
+
+
HP.
SUSPEND
1 2 3 4 5 6 7 8 9 10
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PIN FUNCTION (SP V
+
=3.0V,HP V
+
=3.0V)
PIN No.
SYMBOL
FUNCTION
PIN
VOLTAGE(V)
EQUIVARENT
CIRCUIT
1
EVR
EVR Control
-
Base(PNP)
2
LINE-IN-L
Line Lch Input
1.5
Base(PNP)
3
MUTE
Headphone Mute Control
3.0
100k
Pull Down
Base(PNP)
4
LINE-IN-R
Line Rch Input
2.5
Base(PNP)
5
BEEP BIAS
Bias
1.5
64k
6
SYS.BEEP-IN
System BEEP Input
1.5
Base(PNP)
7
SP.IN
Speaker Amp. Input
1.5
Base(PNP)
8
BEEP IN
Speaker BEEP Input
1.5
Base(PNP)
9
HP.SUSPEND
Headphone Suspend
-
Base(PNP)
10
SP.SUSPEND
Speaker Suspend Control
-
Base(PNP)
11
SP.GND
GND for Speaker
0.0
-
12
LM
Speaker Line Mix On/Off Control
3.0
100k
Pull Up
Base(PNP)
13
SP.OUT2
BTL Invert Output
1.5
Emitter Follower
(NPN)
14
SP.OUT1
BTL Non-Invert Output
1.5
Emitter Follower
(NPN)
15
BEEP LEVEL
System BEEP Output Level Control
2.3
C(PNP)-3k
16
SP.V
+
Supply for Speaker
3.0
-
17
HP.GND
GND for Headphone
0.0
-
18
HP.OUT R
Headphone Rch Output
1.5
Emitter Follower
(NPN)
19
HP.OUT L
Headphone Lch Output
1.5
Emitter Follower
(NPN)
20
HP.V
+
Supply for Headphone
3.0
-
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NJM2151A
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TEST CIRCUIT
HP.SUSPEND
SP.SUSPEND
HP.V
+
SP.V
+
VR
VR
+
+
+
4
4
4
4
10
HP.SUSPEND
SP.SUSPEND
9
8
7
BEEP IN
6
1k
0.47uF
18k
1k
15k
1k
0.47uF
0.47uF
33k
SP IN
5
22uF
4
1k
27k
0.47uF
3
LINE-IN-R
2
1
MUTE
1k
27k
0.47uF
LINE-IN-L
EVR
20
HP.V
+
100
47uF
19
HP.OUT L
18
47uF
100
HP.OUT R
17
HP GND
16
SP.V
+
15
390k
8
SP.OUT 1
14
13
SP.OUT 2
12
11
LM
SP.GND
SYS.BEEP IN
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CONTROL TERMINAL EXPLANATION
1:MUTE CTRL (3pin)
PARAMETER
STATUS
NOTE
HP. Mute On
H
HP.AMP. is not given off signal.
HP. Mute Off
L
HP.AMP. is given off signal.
2:HP.SUSPEND CTRL (9pin)
PARAMETER
STATUS
NOTE
HP. Suspend Off
H
HP.AMP. is active.
HP. Suspend On
L
HP.AMP. is non-active.
3:SP.SUSPEND CTRL (10pin)
PARAMETER
STATUS
NOTE
SP. Suspend Off
H
SP.AMP. is active.
SP. Suspend On
L
SP.AMP. is non-active.
4:LINE MIX ON/OFF CTRL (12pin)
PARAMETER
STATUS
NOTE
Line Mix Off
H
Signal don't get in SP.AMP.
Line Mix On
L
Signal get in SP.AMP.
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