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Details, datasheet, quote on part number:NJM2772
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| Part: | NJM2772 |
| Category: | Multimedia => Audio => Amplifiers => Power Amplifiers |
| Description: | Low-voltage Headphone Amplifier For Portable-audio |
| Company: | NJR Corporation |
| Datasheet: | Download NJM2772 datasheet File size : 57 kB |
| Request For quote: | Find where to buy NJM2772
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Datasheet text preview:
NJM2772
LOW-VOLTAGE HEADPHONE AMPLIFIER for PORTABLE-AUDIO
s GENERAL DESCRIPTION The NJM2772 is a low voltage headphone amplifier for portable audio. The NJM2772 includes mute circuit, center amplifier and beep input, reduce the external parts, standby circuit and center amplifier with ON/OFF, applies to low current consumption. The mute function reduces the turn-noise at standby mode. The NJM2772 is suitable for portable MD, CD, and others portable audio system with headphone amplifier. s FEATURES q Operating Voltage q Operating Current q Low Standby Current q High Output Power q Fixed Gain q Package Outline q Bipolar Technology s PACKAGE OUTLINE
NJM2772V
V+=1.8-4.5V 1.2mA typ. @Center Amp. Off 2.0mA typ. @Center Amp. On 18µA typ. 6mWmin. @RL=16, THD=10% 11.5dB typ. SSOP14
s PIN CONFIGURATION & BLOCK DIAGRAM
STBY 1 INA 2 CenterSW 3 Vref 4 BEEP 5 INB 6 MUTE 7 +
PA-B
14 DNC +
PA-A
13 OUTA 12 V+
Vref
PA-C
11 OUTC 10 GND 9 OUTB 8 MuteTC
Pin Function 1.STBY 2.INA 3.CenterSW 4.VREF 5. BEEP 6.INB 7.MUTE 8.MuteTC 9.OUTB 10.GND 11.OUTC 12. V + 13.OUTA 14.DNC
Note)DNC(14pin):Do not connect
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NJM2772
s ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL Supply Voltage Power Dissipation Operating Temperature Range Storage Temperature Range V PD Topr Tstg
+
RATINGS 5 (SSOP14) 300 -20 to +75 -40 to +125
(Ta=25°C) UNIT V mW °C °C
s RECOMMENDED OPERATING CONDITIIONS PARAMETER SYMBOL MIN. TYP. Operating Voltage Range V+ 1.8 2.3
(Ta=25°C) MAX. UNIT 4.5 V
s ELECTRICAL CHARACTERISTICS (V+=2.3V,Rg=600,RL=16,f=1kHz,STBY-OFF,MUTE-OFF,CA-ON,Ta=25°C) PARAMETER SYMBOL ICC1 ICC2 ICC3 Operating Current ICC4 ICC5 Icc6 ICC7 VREF GV PO1 PO2 V NO CT MUTE VBEEP SVR TEST CONDITION STANDBY-ON,MUTE-ON No signal, CA-OFF No signal PO=0.5mW +0.5mW,CA-OFF PO=0.5mW +0.5mW PO=0.1mW +0.1mW,CA-OFF PO=0.1mW +0.1mW No signal VIN=-30dBV THD=10% V+1=1.8V,THD=10% VIN=-30dBV A-Weighted VIN=-30dBV,Vo=-18.5dBV MUTE-ON,VIN=-30dBV,A-Weighted BEEP-IN=2Vpp V+=1.8V+0.1Vrms:1kHz MIN. 0.70 10.5 6.0 3.0 -55 65 TYP. 18 1.2 2.0 5.8 11.7 3.0 5.9 0.75 11.5 8.0 4.0 0.1 -98 (12.6) -40 -95 -50 70 MAX. 26 2.0 4.0 0.80 12.5 0.5 -94 (20) -24 -80 -45 UNIT µA mA mA mA mA mA mA V dB mW % dBV (µVrms) dB dBV dBV dB
Reference Voltage Voltage Gain Output Power
Total Harmonic Distortion THD Output Noise Voltage Closs-talk Mute Level Beep Output Voltage Supply Voltage Rejection Ratio
s CONTROL TERMINAL CHARACTERISTICS PARAMETER SYMBOL TEST CONDITION H Level Input Voltage VIH STBY(1Pin),CSW (3Pin),MUTE(7Pin) L Level Input Voltage VIL STBY(1Pin),CSW (3Pin),MUTE(7Pin) H Level Input Voltage VBH BEEP(5Pin) L Level Input Voltage VBL BEEP(5Pin)
MIN. 0.8 0 0.8 0
TYP. -
MAX. V+ 0.3 V+ 0.3
UNIT V V V V
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NJM2772
s CONTROL TERMINAL EXPLANTION STBY (1Pin) CONTROL PARAMETER SIGNAL STANDBY ON L IC is standby. STANDBY OFF H IC is active. Center-SW (3Pin) PARAMETER Center Amp. ON Center Amp. OFF MUTE (7Pin) PARAMETER MUTE ON MUTE OFF CONTROL SIGNAL H IC output no signal. L IC output the signal. STATUS CONTROL SIGNAL L H STATUS Center Amp. is active. Can operate output coupling capacitor less. When output coupling capacitor is used, realize low current consumption to be Center Amp. OFF.
STATUS
s APPLICATION CIRCUIT 1) Center Amp. On Mode
STBY OFF STBY ON
STBY
0.47uF
1 2 3 4 5
Vref
PA-C
14 DNC +
PA-A
INA
Center OFF Center ON
13
16
OUTA V+
CenterSW
12
0.1uF
Vref BEEP INB
MUTE ON MUTE OFF
47uF
11 OUTC GND 10
16
0.47uF
6 7
+
PA-B
9 8
0.47uF
OUTB MuteTC
MUTE
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