NJM2174V-TE1

NJW2174 AUDIO LINE AMPLIFIER with MUTE FUNCTION ■ GENERAL DESCRIPTION ■ PACKAGE OUTLINE The NJM2174 is a low voltage audio line amplifier designed for audio items. Internal closed loop voltage gain is suitable for amplifier of small line signal in digital audio items. It includes mute circuit which realizes very low turn-noise at power on/off. It is suitable for digital audio items with line out. ■ FEARTURES ● Operating Voltage ● Operating Current ● Maximum Output Voltage ● Closed Loop Voltage Gain 4.5 to 5.5V + 2.5mA typ. at V =5V 4dBV typ. at THD=0.1% 3.5dB typ. at f=1kHz 2.5dB typ. at f=100kHz ● Mute Function -85dB typ. ● Supply Voltage Rejection Ratio 60dB typ. ● Bipolar Technology ● Package Outline SSOP14 ■ PIN CONFIGURATION 1 14 2 13 3 12 4 11 5 10 6 9 7 8 PIN FUNCTION 8. BIAS 1. GND 9. NC 2. NC 10. NC 3. OUT-R 11. IN-L 4. MUTE 1 12. OUT-L 5. MUTE 2 13. NC 6. MUTE C + 14. V 7. IN-R NJM2174V ■ BLOCK DIAGRAM + GND 1 14 V NC 2 13 NC OUT-R 3 12 OUT-L MUTE1 4 11 IN-L MUTE2 5 MUTEC 6 IN-R 7 MUTE BIAS 10 NC 9 NC 8 BIAS NJM2174V NJW2174 ■ ABSOLUTE MAXIMUM RATINGS RARAMETER SYMBOL + Supply Voltage V Power Dissipaation PD Operating Temperature Range Topr Storage Temperature Range Tstg + ■ ELECTRICAL CHARACTERISTICS PARAMETER (Ta=25°C) UNIT V mW °C °C RATINGS 7 300 -20 to +75 -40 to +125 (V =5V, VIN=-3dBV, RL=47kΩ, f=1kHz, Ta=25°C) SYMBOL TEST CONDITION + MIN. TYP. MAX. UNIT 4.5 5.0 5.5 V Operating Voltage Range V Operating Current ICC No signal - 2.5 4.5 mA Reference Voltage VREF No signal 2.0 2.3 2.6 V Closed Loop Voltage Gain1 G V1 2.5 3.5 4.5 dB Closed Loop Voltage Gain2 G V2 -7.0 -2.5 -2.0 dB Channel Gain Balance ∆GV -0.5 0 0.5 dB Maximum Output Voltage VOM 3 4 - dBV Total Harmonic Distortion THD - 0.005 0.01 % Output Noise Voltage VNO Rg=0Ω, A-Weighted - -95 -88 dBV Mute Level MUTE VO/VIN - -85 -70 dB 70 90 - dB 45 60 - dB Channel Separation CS Supply Voltage Rejection SVR Ratio High Level Input Voltage VIH Low Level Input Voltage f=100kHz THD=0.1% VRP=-20dBV, Rg=0Ω VIL ■ CONTROL TERMNAL MUTE1(4pin) MUTE2(5pin) STATUS L L IC doesn’t output the signal. L H IC doesn’t output the signal. H L IC set up 3.5dB typ. voltage gain. H H IC doesn’t output the signal. + 2.0 - V V 0 - 0.3 V NJW2174 ■ APPLICATION CIRCUIT OUT-L IN-L V+ 10µF 10µF 4.7µF NC 14 13 NC NC 10 9 11 12 135kΩ 8 BIAS 135kΩ 40pF 40kΩ 20kΩ 40kΩ 20kΩ 40pF 135kΩ 135kΩ MUTE 1 2 4 3 5 6 7 NC 1µF 10µF H OUT-R L H 10µF L IN-R NJW2174 !TERMINAL DESCRIPTION No. SYMBOL 1 GND 2 NC FUNCTION EQUIVALENT CIRCUIT VOLTAGE Ground Terminal 0V Vcc 3 12 OUT-R OUT-L 20k 65k Rch Output Lch Output 2.3V 300 10p Vcc 4 5 MUTE1 MUTE2 Mute Switch Terminal 1 Mute Switch Terminal 2 50k Vcc 6 MUTEC Pop Noise reduction for Mute Switch 150k Vcc 7 11 IN-R IN-L Rch Input Lch Input 50k 135k 135k Vref V+/2 40p NJW2174 !TERMINAL DESCRIPTION No. SYMBOL FUNCTION EQUIVALENT CIRCUIT VOLTAGE 40k 8 BIAS Reference Voltage 2.3V 2k 9 10 13 14 NC NC NC + V Power Supply Terminal 130k + V