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