NTE1558 Integrated Circuit Switchless Rec/PlayBack Amp for VCR Features: D Contians all recording/playback amplifiers required for VTR audio signal system. D Capable of setting each mode of recording, playback an muting by changing only the control pin voltage D Very small pop noise occurring at the time of mode selection D Easy to adjust recording level, playback senisitivity D Improvement in reliability due to electronic switch Absolute Maximum Ratings: (TA = +25°C unless otherwise specified) Maximum Supply Voltage, VCCmax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15V Power Dissipation, PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 700mV Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −10° to +75°C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −55° to +125°C Electrical Characteristics: (TA = +25°C, VCC = 9V, f = 1kHz unless otherwise specified) Parameter Symbol Test Conditions Min Typ Max Unit Current Dissipation (Playback) ICCP 5 8.5 13 mA Current Dissipation (Recording) ICCR 6 10 15 mA Overall Gain for Playback VG(1) PB In to Line Out, VO = 0dBm(P) 75 80 85 dB Overall Gain for Recording VG(2) MIC In to Line Out, VO = 0dBm(R) 64 68 72 dB Line Amp. Max. Output Voltage VomL THD = 3%(P/R) 1.9 2.3 − V Recording Amp. Max. Output Voltage VomR THD = 3% 1.9 2.3 − V Mic. Amp. Closed Loop Gain VGCM VO = 0dBm(R) 35.5 37.5 39.5 dB Recording Amp. Closed Loop Gain VGCR VO = 0dBm(R) 11.5 13 14.5 dB Equalizier Amp. Open Loop Gain VGOE VO = 0dBm(P) 70 90 − dB Recording Amp. Open Loop Gain VGOR VO = 0dBm(R) 38 42 − dB Equalizer Amp. Input Impedance ZINE (P) 40 55 − kΩ Mic. Amp. Input Impedance ZINM (R) 40 55 − kΩ Equalizier Amp. Noise Voltage Referred to Input VNINE Rg = 2.2kΩ DIN AUDIO F−(P) − 1 18 μV Mic. Amp. Noise Voltage Referred to Input VNINM Rg = 2.2kΩ DIN AUDIO F−(R) − 1 2 μV Electrical Characteristics (Cont’d): (TA = +25°C, VCC = 9V, f = 1kHz unless otherwise specified) Parameter Symbol Test Conditions Min Typ Max Unit Leak Output for Playback Muting VO(PM) PB in to Line Out, VIN = −40dBm(PM) − −40 −30 dBm Leak Output for Recording Muting VO(RM) PB in to Line Out, VIN = −40dBm(RM) − −46 −36 dBm Output Voltage II for ALC Operation VOAII Mic In to Line Out, VIN = −60dBm(R) 0.46 0.58 0.73 V Output Voltage I for ALC Operation VOAI Mic In to Line Out, VIN = −30dBm(R) 0.60 0.80 1.10 V Line Output Distortion for ALC Operation THDA VIN = −30dBm, BW = 500 to 5kHz(R) − 0.4 1.0 % Recording Amp. Distortion THDR VO = 9dB (R) − 0.2 0.6 % Line Amp. Outisde Noise VNOL DIN Audio F. (M) − −68 −58 dBV Note *. (P), (R), (PM), and (RM) represent the playback mode, recording mode, and muting mode respectively. Pin Connection Diagram Pre−Bypass 1 18 MIC Input PB Input 2 17 ALC Output PB NFB 3 16 ALC Input Pre−Output 4 15 VCC GND 5 14 P/R Cont Input Filter 6 13 Rec Output Line NFB 7 12 Rec Input Line Input 8 11 Rec NFB Line Input 9 10 Line Output 18 10 1 9 .870 (22.1) Max .250 (6.35) .150 (3.8) .100 (2.54) .800 (20.3) .125 (3.17) Min