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Details, datasheet, quote on part number:NJM2171AR
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Datasheet text preview:
NJM2171A
LOW VOLTAGE HEADPHONE AMPLIFIER for PORTABLE AUDIO
s GENERAL DESCRIPTION The NJM2171A is a low voltage headphone amplifier designed for portable audio items. The NJM2171A operates directly for battery supply. It includes mute and standby circuit which require few external components and realize low current consumption and very low turn-noise at standby mode. It is suitable for portable Mini-Disc, portable Compact-Disc, and other headphone amplifier application. s PACKAGE OUTLINE
NJM2171AR
s FEATURES q Operating Voltage
V 1=1.8 to 4.5V + V 2=0.9 to 4.5V + q Operating Current 450µA typ. @V 1=2.3V + 700µA typ. @V 2=1.2V q Supply Current in Power Down Mode + 10µA typ. @V 1=2.3V + 25µA typ. @V 2=1.2V @THD=10% q Output Power Exceeds 5mW RL=16 q Fixed Voltage Gain 11.5dB typ. q Package Outline VSP10 q Bipolar Technology
+
s PIN CONFIGURATION
1 2 3 4 5
MUTE BIAS
AMP1 AMP2
10 9 8 7 6
PIN FUNCTION + 1.V 2 2.OUT1 3.IN1 4.STBY + 5.V 1 6.VREF 7.MUTE 8.IN2 9.OUT2 10.GND
NJM2171A
s ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL + Supply Voltage V Power Dissipation PD Operating Temperature Range Topr Storage Temperature Range Tstg RATINGS 5 (VSP8) 320 -20 to +75 -40 to +125 (Ta=25°C) UNIT V mW °C °C
s RECOMMENDED OPERATING CONDITIONS PARAMETER SYMBOL MIN. + Operating Voltage Range1 V1 1.8 + Operating Voltage Range2 V2 0.9
+ +
TYP. 2.3 1.2
MAX. 4.5 4.5
(Ta=25°C) UNIT V V
s ELECTRICAL CHARACTERISTICS (V 1=2.3V,V 2=1.2V,Rg=600,RL=16,f=1kHz,Ta=25°C) PARAMEETER SYMBOL TEST CONDITION MIN. TYP. + ICC0 V 1=0V(1pin) ICC1 STANDBY ON,MUTE ON(1pin) 25 ICC2 STANDBY ON,MUTE ON(5pin) 10 Operating Current ICC3 No signal(1pin) 700 ICC4 No signal(5pin) 450 ICC5 PO=0.5mW +0.5mW (1pin) 5.5 ICC6 PO=0.5mW +0.5mW (5pin) 0.8 Reference Voltage VREF No signal 0.55 0.60 Closed Loop Gain GV VIN=-30dBV 10.5 11.5 PO1 THD=10% 5.0 8.5 Output Power + + V 1=1.8V,V 2=0.9V,THD=10% 2.0 4.0 PO2 0.15 T HD1 Po=1mW ,RL=16 Total Harmonic Distortion 0.4 TED2 Po=5mW ,RL=16 Output Noise Voltage VNO A-W eighted -100 Crosstalk CT VIN=-30dBV -80 Mute Level MUTE MUTE-ON,VIN=-30dBV,A-W eighted -95 + + V 1=1.8V+0.1Vrms, V 2=0.9V 60 70 Supply Voltage Rejection SVR1 + + Ratio SVR2 V 1=1.8V, V 2=0.9V+0.1Vrms 60 70
MAX. 1 40 15 1200 700 0.65 12.5 0.3 0.6 -96 -70 -80 -
UNIT
µA
mA V dB mW % dBV dBV dBV dB
NJM2171A
s CONTROL TERMINAL CHARACTERISTICS PARAMETER SYMBOL TEST CONDITION High Level Input Voltage VIH STBY(4pin), MUTE(7pin) Low Level Input Voltage VIL STBY(4pin), MUTE(7pin) MIN. 1.2 0 TYP. MAX. + V1 0.3 UNIT V V
s CONTROL TERMINAL EXPLANATION ·STBY (4Pin) PARAMETER CONTROL SIGNAL STANDBY ON H IC is non-active. STANDBY OFF L IC is active. ·MUTE (7Pin) PARAMETER MUTE ON MUTE OFF
STATUS
CONTROL SIGNAL STATUS H IC doesn't output the signal. L IC output the signal.
s APPLICATION CIRCUIT
V+2 22µF OUT1 16 IN1
STBY ON STBY OFF
1
330µF 0.47µF
10
AMP1 AMP2
2 3 4 5
9 8
330µF OUT2 16 IN2 100k 1µF
MUTE ON MUTE OFF
0.47µF
100k 1µF
MUTE BIAS
7 6
V+1 22µF
22µF
[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.
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