AN3479FBP

ICs for VCR AN3479FBP VCR Signal(Luminance, Chroma and Normal Audio Signals) Processing IC Unit:mm s Overview The AN3479FBP is an IC designed for NTSC-dedicated VHS VCR signal processing and incorporates circuits for processing RF and normal audio signals as well as luminance and chroma signals. 63 64 21.2±0.2 18.0±0.2 43 42 18.0±0.2 84 22 1.55±0.1 1 (1.0) 21 s Features Compatible with I2C-bus Totally free of adjustments Low-frequency comb system An improved chroma S/N ratio ensured by built-in CNR and CPC(chroma phase compensator) circuits Compatible with SQPB 3.25±0.2 21.2±0.2 0.15–0.05 +0.10 1.55±0.1 0.6±0.2 0.80 0.35–0.05 Seating plane +0.1 s Applications VCR(NTSC) QFH084-P-1818B 0.15–0.05 0.1±0.1 0° to 10° 0.6±0.2 +0.1 0.1±0.1 1 REC EQ 52 peak f variable REC EQ 53 LPF fC variable 54 AN3479FBP PB Rec. Rec. Rec. PB 2 VCC(RF) VHS-H GND(NA) ROTARY 49 IN 50 63 43 SP/LP -on Rec. -off 62 S/V det. Det. VV EE 61 8M trap 42 GND(RF) RF in/out AT-OUT 41 Det. AT 39 Int. 60 59 58 57 56 55 51 48 47 46 45 44 s Block Diagram 64 DO SLP -on EE -on External S-VHS DOP PB RF EQ out 65 Sub LPF ENV External peaking PB-off 4 850 Ω PB : off RF AGC 40 Y/C mix. PB Rec.-Y -Y Rec.-C Ext. 66 W 1 250 Ω 67 EE Nor MODE SCL in CK off VV EE Internal peaking Test2 DEM Peaking BPF & GCA D-lim. 629 kHz trap LP/SLP-on VCC(NA) 68 fH trap I2 C bus Clamp 3 MOD Nor 38 Audio out AGC SDA in 69 Rec. RF EQ 37 Test4 70 Det. Rotary ID Lim. ANR Lim. ...