NJM2777 JRC, NJM2777 Datasheet
NJM2777
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NJM2777 Summary of contents
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... Headphone Amplifier with Electronic Volume GENERAL DESCRIPTION NJM2777 is a headphone amplifier with electronic volume. It includes widely gain adjustable volume, +20 to –80 dB, and mute function. These are controlled by DC voltage. The NJM2777 is suitable for headphone output on TV set FEATURES G Operating Voltage ...
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... NJM2777 www.DataSheet4U.com ABSOLUTE MAXIMUM RATING (Ta=25° ° ° ° C) PARAMETER Supply Voltage Power Dissipation Operating Temperature Range Storage Temperature Range ELECTRICAL CHARACTERISTICS + (V =9V, V =-20dBV, f=1kHz POWER SUPPLY PARAMETER Operating Voltage Operating Current Reference Voltage ...
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... V CNTA Input A CNT A Vo max G 20 log = EVR Vo min Vomin : Output voltage at VCNT=0V Vomax : Output voltage at VCNT=3.3V NJM2777 Output B 100Ω 100µF V+ [THD] BPF:400 to 30KHz [G ] BPF:1KHz EVR 10µ OUTb V+ OUTa GND 13 14 Output A 100Ω ...
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... NJM2777 www.DataSheet4U.com TEST CIRCUIT 2 (VNO1,VNO2,VREF) 7 N.C. N. REF – 4 – Input B CNT B V CNTB 0.47µF 1µ Mute INb CAPb CNTb VOL VOL Bias Vref INa CAPa CNTa 100µF 0.47µF 10µF 1µF V CNTA Input A CNT A Output B 100Ω ...
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... Mute INb CAPb CNTb VOL VOL Bias Vref INa CAPa CNTa 0.47µF 100µF 10µF V CNTA 1µF Rg=600Ω Input A CNT A NJM2777 Output B 100Ω V+ 100µF [Icc 10µF OUTb V+ OUTa GND 13 14 Output A 100Ω – 5 – ...
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... NJM2777 www.DataSheet4U.com TEST CIRCUIT 4 (CS) Rg=600Ω – 6 – Input B CNT B Rg=600Ω 1µF 0.47µ N.C. Mute INb CAPb CNTb VOL VOL Bias N.C. Vref INa CAPa CNTa 0.47µF 10µF 1µF Input A CNT A Rg=600Ω 100Ω V [CS] CNTB 100µ ...
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... CAPb CNTb VOL VOL Bias Vref INa CAPa CNTa 0.47µF 100µF 10µF 1µF Rg=0Ω V CNTA Input A CNT A NJM2777 Output B 100Ω [PSRR] BPF:1KHz 100µ 10µF V+ OUTb V+ OUTa GND 13 14 Output A [PSRR] 100Ω BPF:1KHz – 7 – ...
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... NJM2777 www.DataSheet4U.com TEST CIRCUIT 6 (MUTE) 7 N.C. N.C. 8 – 8 – CNT B Input B V CNTB 0.47µF 1µ Mute INb CAPb CNTb VOL VOL Bias Vref INa CAPa CNTa 10µF 0.47µF 100µF 1µF Input A CNT A Output B 100Ω [MUTE] 100µF ...
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... Mute INb CAPb CNTb VOL VOL Bias Vref INa CAPa CNTa 0.47µF 10µF 1µF CNT A Input A NJM2777 Output B 75Ω 100µ 10µF OUTb V+ OUTa GND 13 14 100µF Output A 75Ω – 9 – ...
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... NJM2777 www.DataSheet4U.com TERMINAL DESCRIPTION PIN SYMBOL FUNCTION NO. 2 OUTb Bch Output 13 OUTa Ach Output 3 CNTb Bch Volume Control 12 CNTa Ach Volume Control Bch Volume control click 4 CAPb noise absorbing capacitor connect terminal 11 CAPa Ach Volume control click noise absorbing capacitor ...
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... TERMINAL DESCRIPTION PIN SYMBOL FUNCTION NO. 6 Mute Mute Control Reference voltage stabilized 9 Vref capacitor connect terminal EQUIVALENT CIRCUIT Mute 200 400k 100k Vref 200 100k NJM2777 TERMINAL VOLTAGE GND V+/2 – 11 – ...
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... NJM2777 www.DataSheet4U.com TYPICAL CHARACTERISTICS Operating Current vs. Operating Voltage No signal, MUTE=L, Ta=25° Operating Voltage [V] Reference Voltage vs. Operating Voltage No signal, MUTE=L, Ta=25° Operating Voltage [V] Voltage Gain vs. Control Voltage (Operating Voltage) Vin=-20dBV, f=1kHz, RL=100Ω, Ta=25°C ...
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... VCNT [V] 1000 10000 100000 Frequency [Hz] 1.5 2.0 2.5 3.0 VCNT [V] NJM2777 Mute Level vs. Mute Control Voltage V+=9V, Vin=0dBV, f=1kHz, Gv=0dB, RL=100Ω -20 Ta=-20°C Ta=25°C -40 T a=75°C -60 -80 -100 0.0 1.0 2.0 3.0 Mute Control Voltage [V] Mute Level vs. AMbient Temperature V+=9V, Vin=0dBV, f=1kHz, Gv=0dB, RL=100Ω, MUTE=H 0 -10 ...
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... NJM2777 www.DataSheet4U.com TYPICAL CHARACTERISTICS THD+N vs. Output Power (Operating Voltage) f=1kHz, Gv=10dB, RL=100Ω, BW=400Hz-30kHz, Ta=25°C 100 10 1 0.1 0.01 1E-6 10E-6 100E-6 THD+N vs. Output Power (Ambient Temperature) V+=9V, f=1kHz, Gv=10dB, RL=100Ω, BW=400Hz-30kHz 100 10 Ta=25°C Ta=-20°C 1 0.1 0.01 1E-6 10E-6 100E-6 Output Power [W] Output Power vs. Operating Voltage f=1kHz, THD=10%, Gv=10dB, RL=100Ω ...
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... Ambient Temperature[°C] 50 100 150 NJM2777 [CAUTION] The specifications on this data book are only given for information, without any guarantee as regards either mistakes or omissions. The application circuits in this data book 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 ...