NJM2777

NJM2777 Headphone Amplifier with Electronic Volume I 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. I FEATURES G Operating Voltage G Electronic Volume G Mute Function G Bipolar G Package Outline I BLOCK DIAGRAM CNTa CAPa Mute I PACKAGE OUTLINE NJM2777D NJM2777M NJM2777V 8 to 10 V +20dB to -80dB DIP14, DMP14, SSOP14 Mute IN a VOL OUTa IN b VOL OUTb Bias Vref CNTb CAPb I PIN FUNCTION No. 1 1 14 2 3 4 5 7 8 6 7 SYMBOL V+ GND V+ OUTb CNTb CAPb INb Mute N.C. FUNCTION Power Supply Bch Output Bch Volume control voltage input Bch Volume control click noise absorbing capacitor connect terminal Bch Input Mute control No connecting No. 8 9 10 11 12 13 14 SYMBOL N.C. Vref INa CAPa CNTa OUTa GND FUNCTION No connecting Reference voltage stabilized capacitor connect terminal Ach Input Ach Volume control click noise absorbing capacitor connect terminal Ach Volume control voltage input Ach Output Ground –1– NJM2777 I ABSOLUTE MAXIMUM RATING (Ta=25°C) PARAMETER SYMBOL Supply Voltage Power Dissipation Operating Temperature Range Storage Temperature Range V + RATING 12 DIP14 : 500 DMP14 : 500* SSOP14 : 440* -20 to +75 -40 to +125 UNIT V mW °C °C PD Topr Tstg I ELECTRICAL CHARACTERISTICS + *(Note) EIA/JEDEC STANDARD Test board(76.2 x 114.3 x 1.6mm, 2layers, FR-4)mounting (V =9V, VIN=-20dBV, f=1kHz, RL=100Ω, Gv=0dB,”Mute” terminal =L, Ta=25°C) GPOWER SUPPLY PARAMETER Operating Voltage Operating Current Reference Voltage GAMPLIFIER SYMBOL V + TEST CONDITION No Signal MIN. 8 4 TYP. 9 5 4.1 MAX. 10 8 4.2 UNIT V mA V ICC VREF SYMBOL GEVR ∆Gv VIM PO THD CS Mute VNO1 VNO2 PSRR SYMBOL VIH VIL PARAMETER Volume Operating Range Voltage Gain Channel Balance Maximum Input Voltage Output Power Total Harmonic Distortion Channel Separation Mute Level Output Noise Voltage 1 Output Noise Voltage 2 Power Supply Ripple Rejection GCONTROL TEST CONDITION VCNTa, VCNTb = 0 to 3.3V Gv=-10dB MIN. 80 -1.5 8.9 (2.8) 70 70 MIN. 2 0 TYP. 100 0 9.5 (3.0) 100 0.1 80 -85 -95 (18) -105 (5.6) 70 TYP. - MAX. 1.5 1 -75 -85 (56) -95 (18) MAX. V + UNIT dB dB dBV (Vrms) mW % dB dB dBV (µVrms) THD=3% Gv=10dB, THD=10% Rg=600Ω, Vin = 0dBV “Mute” terminal=H, Vin = 0dBV Rg=0Ω, A-Weighted “Mute” terminal =H Rg=0Ω, A-Weighted Vripple=-20dBV Rg=0Ω dBV (µVrms) dB UNIT V V PARAMETER High Level Input Voltage Low Level Input Voltage TEST CONDITION 0.4 I CONTROL TERMINAL Operating Condition Mute Active Operating Condition Control Terminal Mute Terminal Description Mute the signal Output the signal H L, OPEN –2– NJM2777 I TEST CIRCUIT TEST CIRCUIT1 (THD, GEVR, VIM, PO) Input B CNT B Output B 100Ω 0.47µF 1µF VCNTB 100µF V+ [THD] BPF:400 to 30KHz [GEVR] BPF:1KHz 7 N.C. 6 Mute 5 INb 4 3 2 1 V+ 10µF CAPb CNTb OUTb VOL VOL Bias N.C. 8 Vref 9 10µF INa 10 CAPa CNTa OUTa GND 11 12 13 100µF 14 0.47µF 1µF Output A VCNTA 100Ω [THD] BPF:400 to 30KHz [GEVR] BPF:1KHz Input A CNT A Volume Range : GEVR= 20 log Vo max Vo min Vomin : Output voltage at VCNT=0V Vomax : Output voltage at VCNT=3.3V –3– NJM2777 TEST CIRCUIT 2 (VNO1,VNO2,VREF) Input B CNT B Output B 100Ω VCNTB 0.47µF 1µF 100µF [VNO1, VNO2] A-Weighted V+ 7 N.C. 6 Mute 5 INb 4 3 2 1 V+ 10µF CAPb CNTb OUTb VOL VOL Bias N.C. 8 Vref 9 INa 10 CAPa CNTa OUTa GND 11 12 13 100µF 14 10µF [VREF] 0.47µF 1µF VCNTA 100Ω Output A Input A CNT A [VNO, VNO2] A-Weighted –4– NJM2777 TEST CIRCUIT 3 (Icc) Input B CNT B Output B 100Ω Rg=600Ω VCNTB 100µF V+ [Icc] 1µF 0.47µF 7 N.C. 6 Mute 5 INb 4 3 2 1 V+ 10µF CAPb CNTb OUTb VOL VOL Bias N.C. 8 Vref 9 INa 10 CAPa CNTa OUTa GND 11 12 13 100µF VCNTA 14 0.47µF 10µF Rg=600Ω 1µF Output A 100Ω Input A CNT A –5– NJM2777 TEST CIRCUIT 4 (CS) Input B CNT B Rg=600Ω VCNTB 1µF 100Ω 100µF [CS] BPF:1KHz 0.47µF 7 N.C. 6 Mute 5 INb 4 3 2 1 V+ 10µF CAPb CNTb OUTb VOL Rg=600Ω VOL Bias N.C. 8 Vref 9 INa 10 CAPa CNTa OUTa GND 11 12 13 100µF 14 0.47µF 10µF 1µF Output A VCNTA 100Ω [CS] BPF:1KHz Rg=600Ω Input A CNT A –6– NJM2777 TEST CIRCUIT 5 (PSRR) Input B CNT B Output B 100Ω VCNTB 1µF 100µF [PSRR] BPF:1KHz Rg=0Ω 0.47µF 7 N.C. 6 Mute 5 INb 4 3 2 1 V+ 10µF CAPb CNTb OUTb V+ VOL VOL Bias N.C. 8 Vref 9 INa 10 CAPa CNTa OUTa GND 11 12 13 100µF 14 0.47µF 10µF Rg=0Ω 1µF Output A VCNTA 100Ω [PSRR] BPF:1KHz Input A CNT A –7– NJM2777 TEST CIRCUIT 6 (MUTE) Input B CNT B Output B 0.47µF 1µF VCNTB 100Ω 100µF V+ [MUTE] BPF:1KHz 7 N.C. 6 Mute 5 INb 4 3 2 1 V+ 10µF CAPb CNTb OUTb VOL VOL Bias N.C. 8 Vref 9 10µF INa 10 CAPa CNTa OUTa GND 11 12 13 14 0.47µF 1µF 100µF Output A [MUTE] BPF:1KHz 100Ω Input A CNT A –8– NJM2777 I APPLICATION CIRCUIT Input B Output B 1µF 1µF CNT B 0.47µF 100µF 75Ω 100kΩ 7 N.C. 6 Mute 5 INb 4 3 2 1 V+ 10µF CAPb CNTb OUTb VOL VOL Bias N.C. 8 Vref 9 INa 10 CAPa CNTa OUTa GND 11 12 13 100µF 14 0.47µF 10µF 1µF Output A CNT A Input A 75Ω –9– NJM2777 I TERMINAL DESCRIPTION PIN NO. SYMBOL OUTb OUTa FUNCTION Bch Output Ach Output EQUIVALENT CIRCUIT TERMINAL VOLTAGE 2 13 18k 1k 200 25p 2.2 OUT V+/2 3 12 CNTb CNTa Bch Volume Control Ach Volume Control CAP CNT 200 42k 42k - 4 11 CAPb CAPa Bch Volume control click noise absorbing capacitor connect terminal Ach Volume control click noise absorbing capacitor connect terminal CAP CNT 200 42k 42k - 5 10 INb INa Bch Input Ach Input IN 200 GND 50k – 10 – NJM2777 I TERMINAL DESCRIPTION PIN NO. SYMBOL Mute FUNCTION Mute Control EQUIVALENT CIRCUIT TERMINAL VOLTAGE 6 Mute 200 GND 400k 9 Vref Reference voltage stabilized capacitor connect terminal 100k Vref 100k V+/2 200 – 11 – NJM2777 I TYPICAL CHARACTERISTICS Operating Current vs. Operating Voltage No signal, MUTE=L, Ta=25°C 8 7 6 Operating Current vs. Ambient Temperature V+=9V, No signal, MUTE=L 8 7 6 Operating Current [mA] 5 4 3 2 1 0 Operating Current [mA] 5 4 3 2 1 0 4 6 8 10 12 14 Operating Voltage [V] -50 0 50 Ambient Temperature [°C] 100 150 Reference Voltage vs. Operating Voltage No signal, MUTE=L, Ta=25°C 7 Reference Voltage vs. Ambient Temperature V+=9V, No signal, MUTE=L 7 6 Reference Voltage [V] Reference Voltage [V] 6 5 5 4 4 3 3 2 4 6 8 10 12 14 Operating Voltage [V] 2 -50 0 50 Ambient Temperature [°C] 100 150 Voltage Gain vs. Control Voltage (Operating Voltage) Vin=-20dBV, f=1kHz, RL=100Ω , Ta=25°C 40 20 0 Voltaqge Gain [dB] Voltage Gain[dB] Voltage Gain vs. Control Voltage (Frequency) V+=9V, Vin=-20dBV, RL=100Ω, Ta=25°C 40 20 0 -20 -40 f=100Hz, 1kHz, 10kHz -20 -40 -60 -80 -100 0.0 V+=8V, 9V, 10V -60 -80 -100 0.0 0.5 1.0 1.5 2.0 2.5 3.0 0.5 1.0 1.5 2.0 2.5 3.0 VCNT [V] VCNT [V] – 12 – NJM2777 I TYPICAL CHARACTERISTICS Voltage Gain vs. Control Voltage (Ambient Temperature) V+=9V, Vin=-20dBV, f=1kHz, RL=100Ω 40 20 0 -20°C 25°C Mute Level vs. Mute Control Voltage V+=9V, Vin=0dBV, f=1kHz, Gv=0dB, RL=100Ω 20 0 75°C Voltage Gain [dB] -20 -40 -60 -80 -100 0.0 Mute Level [dB] -20 Ta=-20°C -40 Ta=25°C T a=75°C -60 -80 0.5 1.0 1.5 2.0 2.5 3.0 -100 0.0 1.0 2.0 Mute Control Voltage [V] 3.0 4.0 VCNT [V] Mute Level vs. Frequency V+=9V, Vin=0dBV, Gv=0dB, RL=100Ω , MUTE=H, Ta=25°C 0 -10 -20 -30 0 -10 -20 -30 Mute Level vs. AMbient Temperature V+=9V, Vin=0dBV, f=1kHz, Gv=0dB, RL=100Ω , MUTE=H Mute Level [dB] Mute Level [dB] -40 -50 -60 -70 -80 -90 -100 -110 10 100 1000 Frequency [Hz] 10000 100000 -40 -50 -60 -70 -80 -90 -100 -110 -50 0 50 100 150 Ambient Temperature [°C] Voltage Gain Channel Balance vs. Control Voltage (Ambient Temperature) Voltage Gain Channel Balance vs. Control Voltage (Frequency) V+=9V, Vin=-20dBV, f=1kHz, RL=100Ω 1.5 V+=9V, Vin=-20dBV, RL=100Ω , Ta=25°C 1.5 Voltage Gain Channel Balance [dB] f=10kHz Voltage Gain Channel Balance [dB] 1 1 -20°C 0.5 0.5 0 0 -0.5 100Hz f=1kHz -0.5 25°C -1 -1 75°C -1.5 0.0 -1.5 0.5 1.0 1.5 2.0 2.5 3.0 0.0 0.5 1.0 1.5 2.0 2.5 3.0 VCNT [V] VCNT [V] – 13 – NJM2777 I TYPICAL CHARACTERISTICS THD+N vs. Output Power (Operating Voltage) f=1kHz, Gv=10dB, RL=100Ω, BW=400Hz-30kHz, Ta=25°C 100 V+=10V THD+N vs. Output Power (Frequency) V+=9V, Gv=10dB, RL=100Ω, Ta=25°C 100 f=100Hz: BW=22Hz-30kHz f=1kHz : BW=400Hz-30kHz f=10kHz: BW=400Hz-80kHz 10 V+=9V 10 V+=8V THD+N [%] 1 THD+N [%] f=10kHz 1 0.1 0.1 f=100Hz, f=1kHz 0.01 1E-6 10E-6 100E-6 1E-3 10E-3 100E-3 1E+0 0.01 1E-6 10E-6 100E-6 1E-3 10E-3 100E-3 1E+0 Output Power [W] Output Power [W] THD+N vs. Output Power (Ambient Temperature) V+=9V, f=1kHz, Gv=10dB, RL=100Ω , BW=400Hz-30kHz 100 Power Dissipation vs. Output Power f=1kHz, Gv=10dB, RL=100Ω, BW=400Hz-30kHz, Ta=25°C, 2ch Input 180 160 10 140 Power Dissipation [mW] Ta=25°C Ta=-20°C 120 THD=10% THD+N [%] 1 100 V+=10V 80 V+=9V THD=10 % 60 40 V+=8V 0.1 Ta=75°C THD=10 % 20 0.01 1E-6 0 10E-6 100E-6 1E-3 10E-3 100E-3 1E+0 0 20 40 60 80 100 120 140 Output Power [W] Output Power [mW/ch] Output Power vs. Operating Voltage f=1kHz, THD=10%, Gv=10dB, RL=100Ω, BW=400Hz-30kHz 200 180 160 140 Output Power [mW] Ta=75°C Output Noise Voltatge 1 vs. Ambient Temperature V+=9V, Gv=0dB, RL=100Ω , Rg=0Ω , A-Weighted, MUTE=L -80 -85 Output Noise Voltatge 1 [dBV] Ta=25°C -90 -95 -100 -105 -110 -115 -120 -50 120 100 80 60 40 20 0 6 7 Ta=-20° 8 9 10 11 12 13 0 50 100 150 Operating Voltage [V] Ambient Temperature[°C] – 14 – NJM2777 I TYPICAL CHARACTERISTICS Output Noise Voltatge 2 vs. Ambient Temperature V+=9V, RL=100Ω , Rg=0Ω , A-Weighted, MUTE=H -80 -85 Output Noise Voltatge 2 [dBV] -90 -95 -100 -105 -110 -115 -120 -50 0 50 100 150 Ambient Temperature[°C] [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. – 15 –