NJU72065
1.2W MONAURAL SPEAKER AMPLIFIER
WITH ELECTRONIC VOLUME
GENERAL
DESCRIPTION
The
NJU72065
is a 1.2W output speaker amplifier with
electronic volume. It is suitable for various equipment with
voice guidance and beep sound.
The
NJU72065
has a standby function providing low
current consumption at no input signals (mute). It also
reduces pop noise at turning active and standby mode. All
2
functions are controlled by I C BUS interface.
PACKAGE
OUTLINE
NJU72065RB2
FEATURES
Operating Voltage
Output Power
Volume
I
2
C BUS Control
Standby function
Single-end Input / Differential Input
Thermal Shutdown Circuit
Pop Noise Suppression Circuit
Current Limit
CMOS Technology
Package
NJU72065VC3
+2.7 to +5.5V
1.2W typ. (V
+
=5V, R
L
=8Ω, THD=1%)
500mW typ. (V
+
=3.3V, R
L
=8Ω, THD=1%)
0 to -42dB/3dBstep, Mute
MSOP10(TVSP10), SSOP20-C3
BLOCK
DIAGRAM
PIN CONFIGURATION
No.
Symbol
SDA
SCL
Bypass
+IN
-IN
PREOUT
OUTA
V+
GND
OUTB
PREOUT
V+
MSOP
10
OUTA
SSOP
20-C3
Function
I
2
C Data Input /
Acknowledge Output
I
2
C Clock Input
Reference Voltage
Non-inverted Input
Inverted Input
Pre Output
Output A
Supply Voltage
Ground
Output B
1
2
3
4
4
5
6
7
8
13
14
15
16
17
-IN
+IN
VOL
Bypass
+
REF
I
2
C
OUTB
5
6
7
8
9
10
SCL
SDA
GND
Ver.1.4E
–
1
–
NJU72065
ABSOLUTE
MAXIMUM RATING
(Ta=25C)
PARAMETER
Supply Voltage
Power Dissipation
Output Current
Input Voltage Range
Operating Temperature Range
Storage Temperature Range
1)
SYMBOL
V
+
1)
RATING
+7
505 * / 700 * (MSOP10)
1)
2)
945 * / 1350 * (SSP20-C3)
600
-0.3 to V +0.3 *
-40 to +105
-40 to +150
+
3)
2)
UNIT
V
mW
mA
V
C
C
P
D
I
O
V
IN
Topr
Tstg
* EIA/JEDEC STANDARD Test board (76.2x114.3x1.6mm, 2layer, FR-4) mounting
2)
* EIA/JEDEC STANDARD Test board (76.2x114.3x1.6mm, 4layer, FR-4) mounting
3)
* +IN, -IN, PREOUT, OUTA, OUTB terminals
RECOMMENDED
OPERATING VOLTAGE RANGE
(Ta=25C unless otherwise specified)
PARAMETER
Operating Voltage Range
+
SYMBOL
V
+
TEST CONDITION
-
MIN.
+2.7
TYP.
+5.0
MAX.
+5.5
UNIT
V
ELECTRICAL
CHARACTERISTICS
(Ta=25C, V =+5V, R
L
=8Ω, Ri=20kΩ, Rf=20kΩ, f=1kHz, Volume Setting=0dB unless otherwise specified)
♦DC
CHARACTERISTICS
PARAMETER
Supply Current 1
Supply Current 2
Supply Current (Standby)
Output Offset Voltage
♦AC
CHARACTERISTICS
PARAMETER
Voltage Gain 1
Voltage Gain 2
Maximum Attenuation
Output Power 1
Output Power 2
Total Harmonic Distortion
Supply Voltage Rejection Ratio
* V
Pullup
is I C BUS’s pull up voltage.
4)
2
SYMBOL
I
DD1
I
DD2
I
SD
V
OD
SYMBOL
Gv
1
Gv
2
A
TT
P
O1
P
O2
THD+N
PSRR
TEST CONDITION
No signal, R
L
=∞
No signal, R
L
=∞, V =+3.3V
No signal, R
L
=∞, Standby
4)
V
Pullup
=5V *
No signal
+
MIN.
-
-
-
-
MIN.
+5
-16
-
0.9
TYP.
2.7
2.3
-
-
TYP.
+6
-15
-110
1.2
500
0.1
55
MAX.
3.7
2.8
2
50
MAX.
+7
-14
-
-
-
-
-
UNIT
mA
mA
μA
mV
UNIT
dB
dB
dB
W
mW
%
dB
TEST CONDITION
Vin=1Vrms
Vin=1Vrms,
Volume Setting=-21dB
Vin=1Vrms, Standby
THD≤1%
THD≤1%, V =+3.3V
P
O
=1W
Vripple=100mVrms
+
375
-
-
–
2
–
GD32 MCU
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