NJW1128 Voice Switched Speakerphone Circuit with Speaker Amplifier ! GENERAL DESCRIPTION ! PACKAGE OUTLINE The NJW1128 is a Voice Switched Speakerphone Circuit. It includes all of functions processing a high quality hands–free speakerphone system, such as the necessary amplifiers ( Mic , Receive ,Line, Speaker ), attenuators, level detectors functions. The NJW1128 is controllable independently power-down of the speaker amplifier and the entire IC excluding the speaker amplifier. All external capacitors are sufficient small so that ceramic capacitors are applied. NJW1128FR3 ! APPLICATION •Video Door Phone •Conference System •Wireless Application •Security System ! FEATURES Operating voltage range Attenuator gain range between Transmit and Receive Speaker amplifier Microphone amplifier with mute function Force to Receive, Transmit, or Idle modes Mode –watching monitor Background noise monitor for each path 4-point signal sensing Chip disable Pin powers down the entire IC excluding the speaker amplifier ● Speaker switch Pin power down the speaker amplifier ● Microphone and Receive Amplifiers pinned out for flexibility ● Package Outline 3.9 to 5.5V 52dB ● ● ● ● ● ● ● ● ● ! BLOCK DIAGRAM C8 R4 100n 3k R5 300 k C1 0 100n C9 10 0n LQFP48-R3 C11 R 8 100n 5 .1k R9 51k Microphone M ICIN MUT V+ GND V+ :MU TE :AC TIVE R7 5 .1k TLI1 R2 3 00k Line Out Cf L TXO L II LiO- L iO+ SPV + L ine Am plifi er Monit or Level Detector TLO2 CPT C20 1µ µ C1 1µ µ VREF V + V+ :Reciv e GND :Trensm it Open :idle RTSW Background Noi seMon itor Attenuator Control Backgrou nd No iseM onitor C PR L evel Detector BIAS TLO1 RLO1 CD CD V+ :AC TIVE GND :Power Down C7 1µ µ CT RLO2 C4 1u C 12 1µ µ V+ VREF M UT C5 100n C6 100n C 22 1µ µ SPV + V+ -1 Tx Atten uato r M ic Am plifier VREF C2 1µ µ R6 5.1k MICOUT TLI2 C21 1µ µ C20 100 n C 19 100 n Speaker Ampl ifier V+ R3 C3 300 k 1µ SPS Receiv e Am pli fier -1 SPGND Rx Attenuator GND SPSW V+ :ACTIVE GN D :Powe r Down V RE F R3 300 k SPO+ SPO- SPI RXO RL I2 CfS R10 51 k V RE F 1.2µ µA + V R11 C 13 C1 4 5.1k 10 0n 100n R 12 5.1k VL C R 13 5.1k RVL C RLI1 C15 100n FO FI R14 5.1k R15 5. 1k C16 100n Recive In CfR Speaker Ver.1.4 –1– NJW1128 ! ABSOLUTE MAXIMUM RATING (Ta=25°C) PARAMETER SYMBOL RATING UNIT Power Supply Voltage V+ 7 V Power Dissipation PD 1,330(Note1) mW Operating Temperature Range Topr -40 ~ +85 °C Storage Temperature Range Tstg -40 ~ +125 °C Maximum Input Voltage + VIMAX 0~V (Note2) V (Note1) EIA/JEDEC STANDARD Test board (76.2x114.3x1.6mm, 2layer, FR-4) mounting ! OPERATING VOLTAGE PARAMETER Operating Voltage SYMBOL V + TEST CONDITION - MIN. TYP. MAX. UNIT 3.9 5.0 5.5 V ! ELECTRICAL CHARACTERISTICS (Ta=25°C,V+=5V,Vin=150mVrms/1kHz,MUT=CD=SPSW= V+,MON=OPEN, RVLC=0Ω) ●Power Supply PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT Operating Current 1 ICC1 RX-mode (Receive) 2.0 3.5 6.0 mA Operating Current 2 ICC2 TX-mode (Transmit) 2.0 3.5 6.0 mA Operating Current 3 ICC3 Idle-mode (Standby) 2.0 3.5 6.0 mA Operating Current 4 ICC4 Idle-mode ,SPSW=PD 1.0 2.5 4.0 mA Operating Current 5 ICC5 Idle-mode ,CD=PD,SPSW=PD 0.5 1 1.5 mA Reference Voltage VREF No signal,Idle-mode 2.2 2.5 2.8 V MIN. TYP. MAX. UNIT ●Receive Attenuator(RxIN=200Vrms,Receive Amplifier Gv=0dB) PARAMETER SYMBOL TEST CONDITION Receive Attenuator Gain 1 GR1 RX-mode (Receive) 3.0 6.0 9.0 dB Receive Attenuator Gain 2 GR2 TX-mode (Transmit) -42 -46 -50 dB Receive Attenuator Gain 3 GR3 Idle-mode (Standby) -17 -20 -23 dB Range R to T mode dGR RX-mode – TX-mode 47 52 57 dB Dynamic DC offset GRDC RX-mode – TX-mode (DC) -50 - 50 mV Volume control range GRVR RX-mode,RVLC=0Ω-100kΩ 35 45 55 dB MIN. TYP. MAX. UNIT ●Transmit Attenuator (TxIN=200Vrms,Mic.amplifier Gv=0dB) PARAMETER SYMBOL TEST CONDITION Transmit Attenuator Gain 1 GT1 TX-mode (Transmit) 3.0 6.0 9.0 dB Transmit Attenuator Gain 2 GT2 RX-mode (Receive) -42 -46 -50 dB Transmit Attenuator Gain 3 GT3 Idle-mode (Standby) -17 -20 -23 dB Range R to T mode dGT TX-mode – RX-mode 47 52 57 dB Dynamic DC offset GTDC TX-mode – RX-mode (DC) -50 - 50 mV –2– NJW1128 ●MIC Amplifier(TxIN=1mVrms,Gv=40dB,RL=5.1kΩ) PARAMETER SYMBOL TEST CONDITION RF=300kΩ MIN. TYP. MAX. UNIT -50 0.0 50 mV - 30 - nA Output Offset Voltage VMOS Input Bias Current IMBIAS Voltage Gain 1 GVM1 f=1kHz - 40 - dB Voltage Gain 2 GVM2 f=20kHz - 36 - dB Maximum Output Voltage VMMAX THD=1% 1.0 - - Vrms Maximum Attenuation GMMUTE MUT=MUTE -70 -73 - dB MIN. TYP. MAX. UNIT -50 0.0 50 mV - 30 - nA ●Receive Amplifier (RxIN=1mVrms,Gv=40dB,RL=5.1kΩ) PARAMETER SYMBOL TEST CONDITION Output Offset Voltage VROS RF=300kΩ Input Bias Current IRBIAS Voltage Gain 1 GVR1 f=1kHz - 40 - dB Voltage Gain 2 GVR2 f=20kHz - 36 - dB Maximum Output Voltage VRMAX THD=1% 1.0 - - Vrms MIN. TYP. MAX. UNIT -50 0.0 50 mV - 30 - nA ●Line Amplifier (LINEIN=50mVrms, GV=26dB,RL=1.2kΩ) PARAMETER SYMBOL TEST CONDITION Output Offset Voltage VLOS Input Bias Current IRBIAS Voltage Gain 1 GvL1 f=1kHz - 26 - nA Voltage Gain 2 GvL2 f=20kHz - 25 - nA Gain Bandwidth GLBW RL=600Ω,LIO - 1.5 - MHz RL=1.2kΩ,LIO- to LIO+ -0.5 0 0.5 dB VLMAX RL=1.2kΩ,THD=1% 2.0 - - Vrms THDLN VIN=100mVrms,GV=20dB RL=1.2Ω - - 0.5 % MIN. TYP. MAX. UNIT -50 0.0 50 mV Closed Loop Gain Maximum Output Voltage Total Harmonic Distortion GLC RF=51kΩ ●Speaker Amplifier (SPIN=50mVrms, GV=26dB,RL=32Ω) PARAMETER SYMBOL TEST CONDITION Output Offset Voltage VSPOS RF=51kΩ Voltage Gain 1 GVSP1 f=1kHz - 26 - dB Voltage Gain 2 GVSP2 f=20kHz - 24 - dB Voltage Gain 3 GVSP3 f=1kHz, GVSP=6dB,RL=8Ω 6 GVSO4 f=20kHz, GVSP=6dB,RL=8Ω 4 - dB Voltage Gain 4 - Closed Loop Gain Maximum Output Power GLC dB SPO- to SPO+ -0.6 0 0.6 dB PoMAX1 RL=32Ω,THD=3% 200 300 - mW PoMAX2 RL=8Ω,THD=3% VIN=500mVrms,f=1KHz, RL=32Ω,GVD=26dB VIN=500mVrms,f=1KHz, RL=8Ω,GVD=6dB 300 500 - mW - 1.0 % - 1.0 % THDSP1 Total Harmonic Distortion THDSP2 - –3– NJW1128 ●MONITOR TERMINAL (32Pin) PARAMETER SYMBOL TEST CONDITION MIN. + TYP. MAX. UNIT RX-mode Rx - V -0.6 - V + V TX-mode Tx - GND - 0.6 V Idle-mode Idle No Signal 2.4 2.5 2.6 V Maximum Output Current IMON Rx-mode / Tx-mode - 0.9 - mA ! CONTROL CHARACTERISTICS (MUT) PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT Low Level Input Voltage VIL1 - - - 0.3 V High Level Input Voltage VIH1 - 1.5 - - V SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT VIL2 - - - 0.3 V V -0.3 - - V ! CONTROL CHARACTERISTICS (RTSW) PARAMETER Low Level Input Voltage High Level Input Voltage VIH2 + - ! FUNCTION ●CD INPUT VOLTAGE STATUS VIH ACTIVE VIL MUTE OPERATION NJW1128 is active. NJW1128 is stand-by except Speaker Amplifier. ●MUT INPUT VOLTAGE STATUS OPERATION VIH MUTE The microphone input is mute. VIL ACTIVE The microphone input is active. ●SPSW INPUT VOLTAGE STATUS VIH ACTIVE VIL PD OPERATION The Speaker Amplifier is Active. The Speaker Amplifier is Stand-by. ●RTSW INPUT VOLTAGE VIH STATUS Receive OPEN AUTO VIL Transmit OPERATION Force to Receive mode. Receive mode and Transmit mode are automatically switched. Force to Transmit mode. ●RVLC (26pin) IMPEDANCE STATUS OPERATION 0 VolMAM The Receive attenuator Volume is maximum. 100kΩ VolMIN The Receive attenuator Volume is minimum. –4– NJW1128 ! APPLICATION CIRCUIT Rx-Mode :H Tx-Mode :L Idle :HI-Z C2 1u SW1 H:Active L: PowerDown V+ R1 300k MON C3 1u SW2 H:MUTE L:ACTIVE V+ R23 51k R2 300k SW3 V+ R3 300k Open V+ C6 220n C7 220n LED1 C30 1u H:Recive L:Trensmit O:Auto C4 1u H:ACTIVE L:PowerDown R24 2.2k TR1 V+ C1 1u C5 1u V+ SW4 C29 1u C28 1u 48 47 46 45 44 43 42 41 40 39 38 TLO2 CPT SPSW MUT CD GND V+ MON RTSW VREF CPR C27 220n 37 C26 220n RLO1 TLO1 36 NC NC 35 3 CT VLC 34 4 NC 1 RLO2 2 VR1 100k C8 1u V+ R4 3 1 C9 C11 + R5 NC 5 R8 51k MCI C12 100p 6 MIC OUT C13 100n *R7 : Jumper MCO R9 5.1k 7 TLI2 8 9 FI NJW1128 C23 100p FO FO R19 5.1k 30 TLI1 RLI2 29 TXO RXO 28 *R17 : Jumper R16 C20 5.1k 100n 10 LINE IN Line Out－ － C22 100n R18 510 C15 R12 100n 5.1k R13 5.1k Receive In R20 51k C21 1u TX OUT C25 100n 31 C14 1u *R11 : Jumper R22 5.1k 32 RLI1 R10 510 R11 0 2 R21 0 MIC IN *R21 : Jumper C24 33 R7 0 C10 R6 100n 5.1k SPI LII 27 C16 1n 11 LIO- 12 LIO+ *R17 0 NC 26 NC 25 SP IN R15 5.1k C19 1n *R14 Line Out＋ ＋ *R14 : Dummy Load NC V+ V+ SPO+ SPO+ GND GND SPO- 13 14 15 16 17 18 19 20 C17 10u + SPO- V+ V+ NC 21 22 23 24 + C18 10u V+ SP Out+ RX OUT SP Out－ － –5– NJW1128 ! TYPICAL CHARACTERISTICS Supply Current vs Supply Voltage No Signal , Supply Current 1 Supply Current vs Supply Voltage No Signal , Supply Current 4 6 4.0 3.5 5 +85degC +85degC 3.0 +25degC +25degC Supply Current [mA] Supply Current [mA] 4 -40degC 3 2.5 -40degC 2.0 1.5 2 1.0 1 0.5 0 0.0 0 1 2 3 4 5 6 7 8 0 1 2 3 4 Supply Voltage [V] Supply Current vs Supply Voltage No Signal , Supply Current 5 6 7 8 Supply Current vs Temperature V+ =5.0V , No Signal 2.0 5 1.8 4.5 1.6 4 Supply Current 1 Supply Current 4 Supply Current 5 3.5 1.4 +85degC Supply Current [mA] Supply Current [mA] 5 Supply Voltage [V] 1.2 +25degC 1.0 -40degC 0.8 3 2.5 2 0.6 1.5 0.4 1 0.2 0.5 0 -50 0.0 0 1 2 3 4 5 6 7 8 -30 -10 10 30 50 70 90 110 130 150 Temperature [degC] Supply Voltage [V] RxAtt Gain vs Temperature V+ =5.0V , RecieveAmp : 0dB , RL=5.1kΩ RxAtt Gain vs Temperature V+ =5.0V , Rx-Mode , RecieveAmp : 0dB , RL=5.1kΩ 50 10 5 48 Idle-Mode 0 RX-Mode 46 Tx-Mode -5 44 Volume Control Range [dB] -10 Gain [dB] -15 -20 -25 -30 42 40 38 36 -35 34 -40 32 -45 -50 -50 -30 -10 10 30 50 70 Temperature [degC] –6– 90 110 130 150 30 -50 -30 -10 10 30 50 70 Temperature [degC] 90 110 130 150 NJW1128 ! TYPICAL CHARACTERISTICS TxAtt Gain vs Temperature V+ = 5.0V , MicAmp : 0dB , RL=5.1kΩ RecieveAmp Maximum Output Voltage vs Temperature V+ = 5.0V , f = 1kHz Rf = 300kΩ , Gv=40dB , RL=5.1kΩ , THD+N = 1% , BW=400Hz-30kHz 10 1.7 5 0 1.6 Idle-Mode TX-Mode -5 Maximum Output Voltage [Vrms] RX-Mode -10 Gain [dB] -15 -20 -25 -30 -35 1.5 1.4 1.3 1.2 -40 1.1 -45 -50 -50 -30 -10 10 30 50 70 90 110 130 1 -50 150 -30 -10 10 Temperature [degC] 30 50 70 90 110 130 150 110 130 150 Temperature [degC] MicAmp Maximum Output Voltage vs Temperature V+ =5.0V , f = 1kHz , Rf = 300kΩ , Gv=40dB , RL=5.1kΩ , THD+N = 1% , BW=400Hz-30kHz MicAmp Mute Range vs Temperature V+ =5.0V , Rf = 300kΩ , Gv=40dB , RL=5.1kΩ , A-Weighting 1.7 80 79 1.6 Maximum Output Voltage [Vrms] 78 1.5 77 76 1.4 75 1.3 74 73 1.2 72 1.1 71 1 -50 -30 -10 10 30 50 70 90 110 130 70 -50 150 -30 -10 10 30 50 70 90 Temperature [degC] LineAmp THD vs Temperature V+ =5.0V , f = 1kHz , Rf = 51kΩ , Gv=26dB , Vin = 50mVrms , RL=1.2kΩ , BW=400Hz-30kHz LineAmp Maximum Output Voltage vs Temperature V+ =5.0V , f = 1kHz , Rf = 51kΩ , Gv=26dB , RL=1.2kΩ , THD+N = 1% , BW=400Hz-30kHz 0.3 2.8 2.7 0.25 Maximum Output Voltage [Vrms] 2.6 THD+N [%] 0.2 0.15 0.1 2.5 2.4 2.3 2.2 0.05 2.1 0 -50 -30 -10 10 30 50 70 Temperature [degC] 90 110 130 150 2 -50 -30 -10 10 30 50 70 90 110 130 Temperature [degC] –7– 150 NJW1128 ! TYPICAL CHARACTERISTICS Speaker Amp THD vs Temperature V+ =5.0V , f = 1kHz , BW=400Hz-30kHz Speaker Amp Maximum Output Pow er vs Temperature V+ =5.0V , f = 1kHz , THD+N = 3% , BW=400Hz-30kHz 0.7 800 700 0.6 8Ω / 6dB 32Ω / 26dB 600 Maximum Ouput Power [mW] THD+N [%] 0.5 0.4 8Ω / 6dB 0.3 0.2 500 400 32Ω / 26dB 300 200 0.1 100 0 -50 -30 -10 10 30 50 70 90 110 130 0 -50 150 -30 -10 10 30 50 70 90 110 130 150 Temperature [degC] Temperature [degC] Receive Amp THD+N vs Input Voltage V+ = 5.0V , f = 1kHz Rf = 300kΩ , Ri=3kΩ , Ci = 1µF , Gv=40dB , RL=5.1kΩ , BW=400Hz-30kHz Receive Amp THD+N vs Input Voltage V+ = 5.0V , f = 1kHz Rf = 3kΩ , Ri=3kΩ , Ci = 1µF , Gv=0dB , RL=5.1kΩ , BW=400Hz-30kHz 10 10 -40degC -40degC +25degC +25degC +85degC +85degC THD+N [%] THD+N [%] 1 0.1 1 0.01 0.001 0.01 0.1 1 0.1 0.0001 10 0.001 10 0.01 0.1 Input Voltage [Vrms] Input Voltage [%] Mic Amp THD+N vs Input Voltage V+ = 5.0V , f = 1kHz Rf = 300kΩ , Ri=3kΩ , Ci = 1µF , Gv=40dB , RL=5.1kΩ , BW=400Hz-30kHz Mic Amp THD+N vs Input Voltage f = 1kHz Rf = 3kohm , Ri=3kohm , Ci = 1uF , Gv=0dB , RL=5.1kohm ,BW=400Hz-30kHz Ta = -40degC 10 -40degC -40degC +25degC +25degC +85degC +85degC THD+N [%] THD+N [%] 1 0.1 1 0.01 0.001 0.01 0.1 1 THD+N [Vrms] –8– 10 0.1 0.0001 0.001 0.01 Input Voltage [Vrms] 0.1 NJW1128 ! TYPICAL CHARACTERISTICS Line Amp THD+N vs Input Voltage f = 1kHz Rf = 51kohm , Ri=5.1kohm , Ci = 1uF , Gv=26dB , RL=1.2kohm ,BW=400Hz-30kHz Ta = -40degC 10 -40degC +25degC THD+N [%] +85degC 1 0.1 0.001 0.01 0.1 1 Input Voltage [Vrms] Speaker Amp THD+N vs Output Pow er V+ = 5.0V , f = 1kHz Rf = 51kΩ , Ri=5.1kΩ , Ci = 1µF , Gv=26dB , RL=32Ω ,BW=400Hz-30kHz Speaker Amp THD+N vs Output Pow er V+ = 5.0V , f = 1kHz Rf = 5.1kΩ , Ri=5.1kΩ , Ci = 1µF , Gv=26dB , RL=8Ω ,BW=400Hz-30kHz 10 -40 degC -40degC +25 degC +25degC +85 degC +85degC THD+N [%] THD+N [%] 10 1 0.01 0.1 1 0.1 0.001 0.1 Output Pow er [Wrms] Receive Amp Maximum Output Voltage vs Load Impedance V+ = 5.0V ,Rf = 300k Ω , Ta=25degC Mic Amp Maximum Output Voltage vs Load Impedance V+ = 5.0V ,Rf = 300k Ω , Ta=25degC 6 6 5 5 4 3 2 1 0 100 0.01 Output Pow er [Wrms] Maximum Output Voltage [V] Maximum Output Voltage [V] 0.1 0.001 1 1 4 3 2 1 1000 10000 Load Impedance [ Ω ] 100000 0 100 1000 10000 100000 Load Impedance [ Ω ] –9– NJW1128 ! TYPICAL CHARACTERISTICS Tx Att Maximum Output Voltage vs Load Impedance V+=5.0V , Ta=25degC 6 6 5 5 Maximum Output Voltage [V] Maximum Output Voltage [V] Rx Att Maximum Output Voltage vs Load Impedance V+=5.0V , Ta=25degC 4 3 2 1 4 3 2 1 0 100 1000 10000 0 100 100000 1000 Load Impedance [ Ω ] 6 6 5 5 4 3 2 1 4 3 2 1 1000 10000 Load Impedance [ Ω ] – 10 – 100000 Monitor out Maximum Output Voltage vs Load Impedance V+=5.0V , Ta=25degC Maximum Output Voltage [V] Maximum Output Voltage (LIO+ to LIO-) [V] Line Amp Maximum Output Voltage vs Load Impedance V+ = 5.0V ,Rf = 51k Ω , Ta=25degC 0 100 10000 Load Impedance [ Ω ] 100000 0 100 1000 10000 Load Impedance [ Ω ] 100000 NJW1128 ! TYPICAL CHARACTERISTICS Pd vs Output Power V+=5.0V , f=1kHz , Gv=6dB , BW=400Hz-30kHz , Ta=25degC 700 600 THD=1% Pd [mW] 500 THD=3% 400 300 200 8Ω 100 16Ω 32Ω 0 0 100 200 300 400 500 600 700 Output Power [mW] RecieveAmp Voltage Gain vs Frequency Vin = 100mVrms , Rf = 3kΩ , Ri = 3kΩ , Ci = 1µF , Gv=0dB , RL=5.1kΩ RecieveAmp Voltage Gain vs Frequency Vin = 1mVrms , Rf = 300kΩ , Ri = 3kΩ , Ci = 1µF , Gv=40dB , RL=5.1kΩ 45 2 40 0 35 V+ =3.9V to 5.5V Ta = -40degC to +85degC Gain [dB] Gain [dB] -2 -4 V+ =3.9V to 5.5V Ta = -40degC to +85degC 30 25 -6 20 -8 15 -10 10 10 100 1000 10000 10 100000 100 1000 10000 100000 Frequency [Hz] Frequency [Hz] Mic Amp Voltage Gain vs Frequency Vin = 100mVrms , Rf = 3kΩ , Ri = 3kΩ , Ci = 1µF , Gv=0dB , RL=5.1kΩ Mic Amp Voltage Gain vs Frequency Vin = 1mVrms , Rf = 300kΩ , Ri = 3kΩ , Ci = 1µF , Gv=40dB , RL=5.1kΩ 2 45 40 0 35 V+ =3.9V to 5.5V Ta = -40degC to +85degC Gain [dB] Gain [dB] -2 -4 V+ =3.9V to 5.5V Ta = -40degC to +85degC 30 25 -6 20 -8 15 -10 10 10 100 1000 Frequency [Hz] 10000 100000 10 100 1000 10000 100000 Frequency [Hz] – 11 – NJW1128 ! TYPICAL CHARACTERISTICS Line Amp Voltage Gain vs Frequency Vin = 50mVrms , Rf = 51kΩ , Ri = 5.1kΩ , Ci = 1µF , Gv=26dB , RL=1.2kΩ 28 26 24 V+ =3.9V to 5.5V Ta = -40degC to +85degC Gain [dB] 22 20 18 16 14 12 10 100 1000 10000 100000 Frequency [Hz] Speaker Amp Voltage Gain vs Frequency Vin = 50mVrms , Rf = 51kΩ , Ri = 5.1kΩ , Ci = 1µF , Gv=26dB , RL=32Ω Speaker Amp Voltage Gain vs Frequency Vin = 500mVrms , Rf = 5.1kΩ , Ri = 5.1kΩ , Ci = 1µF , Gv=6dB , RL=8Ω 10 28 8 26 6 24 4 V+ =3.7V , 5,0V , 5.5V Ta = -40 , +25 , +85 degC 2 Gain [dB] Voltage Gain [dB] 22 20 V+ =3.9V to 5.5V Ta = -40degC to +85degC 0 -2 18 -4 16 -6 14 -8 12 -10 10 100 1000 10000 10 100000 100 Supply Current vs CD Pin Voltage V+ = 5.0V , SPSW = PD , RTSW = Open , no Signal 10000 100000 Supply Current vs SPSW Pin Voltage V+ = 5.0V , CD = Active , RTSW = Open , no Signal 3.5 5 4.5 3 +85 degC +85 degC 4 +25 degC +25 degC 2.5 3.5 2 Supply Current [mA] Supply Current [mA] 1000 Frequency [Hz] Frequency [Hz] -40 degC 1.5 1 3 -40 degC 2.5 2 1.5 1 0.5 0.5 0 0 0.5 1 1.5 CD Pin Voltage [V] – 12 – 2 2.5 0 0 0.5 1 1.5 SPSW Pin Voltage [Hz] 2 2.5 NJW1128 ! TYPICAL CHARACTERISTICS Mic Amp Mute attenuate Range vs MUT Pin Voltage V+ = 5.0V , Vin = 1mVrms , Rf = 300kohm , Ri = 3kohm , Ci = 1uF , Gv=40dB , RL=5.1kohm A-Weighting 10 0 TX , RX attenuator Gain vs RTSW Pin Voltage V+ = 5.0V , f = 1kHz , Vin = 200mVrms 20 +25 degC -10 +85 degC TX-Mode Auto(Idle)-Mode RX-Mode 10 -40degC -40 degC +25degC 0 +85degC -30 Gain [dB] Supply Current [mA] -20 -40 -10 TX Att. RX Att. -20 -50 RX Att. TX Att. -30 -60 -40degC +25degC -40 -70 +85degC -80 0 0.5 1 1.5 MUT Pin Voltage [V] 2 2.5 -50 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 RTSW Voltage [V] [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. – 13 –