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NTE1710 Integrated Circuit Record/Playback Circuit for VCR
Description: The NTE1710 is an integrated circuit in a 22-Lead DIP type package designed for tape recorder and VCR audio recording and playback. This device has built-in electronic switches for recording and playback which include the ones for a noise reduction circuit. Features: D Electronic Switches for REC/PLAY Operation Included (Noise-Reduction Switches also Possible) D Low Noise (Noise Voltage Referred to Input = 0.95V P.B., Rg = 2.2k, 20Hz to 20kHz) D Almost All Functions Necessary for REC/PLAY operation and AGC Circuit Included D Low Current Consumption D Muting Possible Externally Absolute Maximum Ratings: (TA = +25C unless otherwiser specified) Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14.4V Power Dissipation, PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 700mW Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -20 to +70C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55 to +150C Electrical Characteristics: (VCC = 9V, TA = +25C unless otherwise specified)
Parameter Closed Loop Output Voltage On Playback Mode On Record Mode Total Harmonic Distortion Maximum Output Voltage Line Output Recording Output Output Noise Voltage Playback Head Input Record MIC Input Record Line Input Playback Head Input Vno Symbol VO(PB) VO(REC) THD VO(max) Test Conditions P.B., Line Out, Vi = 1kHz, 0.158mV Rec., Rec Out, AGC: OFF, Vi = 1kHz, 0.315mV P.B., Line Out, Vi = 1kHz, 1.58mV P.B., f = 1kHz, THD = 1% Rec., f = 1kHz, THD = 1% P.B., Rg = 2.2k, f = 20Hz to 20kHz Rec., Rg = 2.2k, f = 20Hz to 20kHz Rec., Rg = 0, f = 20Hz to 20kHz P.B., Rg = 0, f = 20Hz to 20kHz Min 420 315 - 1.7 1.7 - - - - Typ 500 445 0.06 2.2 2.2 3.0 1.5 0.14 1.7 Max Unit 594 628 0.1 - - 5.5 2.5 0.3 3.0 mV mV % Vrms Vrms mV mV mV mV
Note 1. A capacitor of 10F or over must be used between Pin11 and GND for the purpose of preventing the AGC circuit oscillation when it is actually used.
Electrical Characteristics (Cont'd): (VCC = 9V, TA = +25C unless otherwise specified)
Parameter AGC Output Voltage Symbol VO(AGC) THD-A VLeak(P/R) Rec., Rec Out, Vi (PB Input) 1kHz 16mV, Rec. Input Shorted P.B., Line Out, Vi (MIC Input) 1kHz 31.5mV, P.B. Input Shorted Muting ON Leakage Voltage Total Supply Current Mode handling Voltage Playback Mode Record Mode Muting Holding Voltage OFF Mode ON Mode VLeak(Mute) Rec., Rec Out, Vi (MIC Input) 1kHz 0.5mV, P.B. Input Shorted Itot V18-P V18-R V17-OFF V17-ON P.B., Mute: OFF Test Conditions Rec., AGC: ON, Rec. Out, Vi = 1kHz, 0.315mV Rec., AGC: ON, Rec. Out, Vi = 1kHz, 31.5mV AGC Distortion R/P-SW Leakage Voltage Min 315 700 - - - - 5.5 0 3.5 0 2.4 Typ 445 825 0.15 1.0 1.8 50 9.0 - - - - Max Unit 570 950 0.3 6.0 10 100 12.5 0.7 7.0 0.9 4.0 mV mV % mV mV V mA V V V V
Note 1. A capacitor of 10F or over must be used between Pin11 and GND for the purpose of preventing the AGC circuit oscillation when it is actually used.
Pin Connection Diagram
EQ Input EQ Neg Feedback EQ Output Buffer Input (Playback) Buffer Feedback (Record) Buffer Output Line Input (Record) Line Input (Playback) Line Output GND AGC Control
1 2 3 4 5 6 7 8 9 10 11
22 21 20 19 18 17 16 15 14 13 12
MIC Input MIC Neg Feedback MIC Output AGC Input Record/Playback Switch Muting Switch Rec Input Rec Neg Feedback Rec Output Reference Voltage VCC
22
12 .410 (11.41)
1
11
1.300 (33.0) .216 (5.5)
.400 (10.16)
.100 (2.54) 1.000 (25.4)
.110 (2.79)

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