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| NTE1805 Integrated Circuit Recording Video Signal Processing Circuit Description: The NTE1805 is an integrated circuit in a 28-Lead DIP type package designed for use in VCR recording video signal processing. Features: D Dynamic Emphasis Characteristics: 5.5dB (at f = 1MHz, input level = -20dB) D Built-In Carrier Interleaving Circuit D Built-In Low Pass Filter (Sync-Separation Circuit) D Supply Voltage: VCC = 5V Absolute Maximum Ratings: (TA = +25C unless otherwise specified) Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6V Power Dissiption (TA = +70C), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250mW Operating Ambient Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -20 to +70C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55 to +150C Electrical Characteristics: (VCC = 5V, TA = +25C unless otherwise specified) Parameter Circuit Current Symbol I20 u8 Du8 G6-8 G15-16 fo 2fo u28 b28 Pin12 High, CO = 39pF, RO = 8.2 to 15k Pin12 High, CO = 39pF, RO = 12k Test Conditions Pin12 High (Record) Pin12 Open (Playback) AGC Output Amplification AGC Control Sensitivity Playback Amp Gain 12dB Amp Gain FM Oscillation Frequency FM Output 2nd High Frequency Pin12 High, Video Input 1VP-P Pin12 High, Video Input 0.5 to 2VP-P Pin12 Open Min 14.5 14.5 0.4 - 6.8 10.4 2.9 - 0.65 11.4 Typ - - - - - - - - - - Max 35.5 35.5 0.8 1.5 9.9 13.4 3.9 -33 1.35 Unit mA mA VP-P dB dB dB MHz dB VP-P FM Oscillation Output Amplification Frequency Control Sensitivity FM Oscillation 14.5 kHz/A Note 1. Operating Supply Voltage Range: VCC = 4.5V to 5.5V. Electrical Characteristics (Cont'd): (VCC = 5V, TA = +25C unless otherwise specified) Parameter Sync Separator Input Sensitivity Sync Separator Output Amplification NL Limiter Gain NL Limiter Output Amplification Symbol S19 u2 u17-21 u21 u14-10 u10 G8-10 u19-10 G12-10 CT19-10 S12 Dfo Du19-10 Pin12 High Pin12 Low E y 4V CT'19-10 Pin12 Low, Pin11 High Test Conditions Video Input V/S = 5/2 Video Input V/S = 5/2 Pin12 High Pin12 High Pin12 High, Pin18 Low NC Limiter Gain NC Limiter Output Amplification EE Amp Gain VV Amp Gain Chroma Amp Gain EE/VV Crosstalk Mute Crosstalk EE/VV Changeover Sensitivity FM Oscillation Carrier Interleave V Offset Pin12 Open Pin12 Open Pin12 High Pin12 Open Min 0.45 4.3 20 26 6.0 30 65 9.7 1.65 5.3 - - 4 5.9 30 Typ - - - - - - - - - - - - - - - Max - - 40 64 2.6 70 125 11.6 2.15 8.8 -40 -40 - 9.9 110 Unit VP-P VP-P mVP-P mVP-P mVP-P mVP-P mVP-P dB VP-P dB dB dB V kHz mV Note 1. Operating Supply Voltage Range: VCC = 4.5V to 5.5V. Pin Connection Diagram Sync Tip Level Detect Sync Output EE Level Adjust Video Signal Input During Recording AGC Detector Video Signal Input During Playback Sub Clamp Detector Sub Clamp Output GND EE/VV Output Dummy Sync Pulse Input PB Chroma Input Noise Canceller L.P.F. Noise Canceller H.P.F. Side Input 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 FM Output White Clip Level Adjustment Mod Mod Dark Clip Level Adjustment Mod Input FB Amp Input Main Emphasis Output VCC Main Clamp Input PG Input & 2/4/6 Hour Select Non-Linear Emphasis Sub-Side Input 12dB Amp Output 12dB Amp Input 28 15 1 14 1.120 (28.4) .338 (8.6) .200 (5.08) .070 (1.78) .130 (3.3) .400 (10.16) |
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