ICs for TV AN5138NK Video IF Amplifier, PLL Detector, AGC, AFC, SIF IC for Color TV ■ Overview • By adopting built-in VCO PLL-type video-detector circuit, the high preformance IC-detector system can be realized for sound multiplex and tele-text broadcasting. • Quadrature sound FM detector built-in. • Frequency characteristics compensation pin (Pin20) VCR-switch pin (Pin5) • Sound-output level-adjustment pin (Pin25) 0.9±0.25 28 27 26 25 24 23 22 21 20 19 18 17 16 15 1.778 26.7±0.3 ■ Features 1 2 3 4 5 6 7 8 9 10 11 12 13 14 0.5±0.1 Unit : mm The AN5138NK is an integrated circuit designed for video-IF and audio-IF processing circuits, in color TV and VCR. 1.05±0.25 3.05±0.25 8.4±0.3 4.8±0.25 3 to 15˚ 10.16±0.25 + 0.1 0.3 – 0.05 28-Pin Shrunk DIL Plastic Package ■ Block Diagram SIF Filter Audio Level Adj. 25 Audio Output SIF Trap Video Output 24 23 22 21 20 19 18 26 17 Level Adj. 27 Noise Inverter VIF Amp. FM Det. 28 Video Inverter 15 VCO Video Det. VTR SW SIF Amp. APC Det. 1 RF AGC 2 IF AGC Lock Det. AFC 14 13 12 3 4 VCC 5 6 + IF – AGC Filter VTR SW 7 RF AGC RF Delay AGC Adj. Out. 8 9 + – AFC SW 10 VCC 11 VCC IF Input 16 AFC Out. 1 ICs for TV AN5138NK ■ Absolute Maximum Ratings (Ta=25˚C) Parameter Symbol VCC Supply Voltage Voltage Rating Circuit Voltage 13.8 Circuit Current 14, 21 V4, 12-1, 14, 21 0 V V6-1, 14, 21 V4, 12-1, 14, 21 0 V V7-1, 14, 21 V4, 12-1, 14, 21 0 V V10-1, 14, 21 V4, 12-1, 14, 21 0 V V18-1, 14, 21 V4, 12-1, 14, 21 0 V V25-1, 14, 21 V 8.0 0 –7 + 0.5 mA I19 –7 + 0.5 mA I26 –5 + 0.5 mA PD 1,300 Operating Ambient Temperature Topr –20 to + 70 ˚C Storage Temperature Tstg –55 to + 150 ˚C Power Dissipation (Ta=70˚C) Temperature V V5-1, I17 Current Unit mW ■ Electrical Characteristics (VCC=12V, Ta=25˚C) Parameter Symbol Condition min typ max Unit IF Amplifier · Detection · AGC · AFC Circuit Video detector output Input sensitivity Max. allowable input VO S (IN) f= 58.75MHz, Vi= 80dBµ, m= 87.5% 1.9 2.2 2.5 VP-P VO= –3dB 49 53 57 dBµ 103 108 V1 (max.) dBµ Differential gain DG Differential phase DP f =58.75MHz, Vi= 80dBµ, m= 87.5% 2 5 deg Frequency characteristics fc VO= –3dB 5.5 6.5 7.5 MHz RF AGC gain AFC phase det. sensitivity AFC center voltage GRFAGC f =58.75MHz, Vi= 80dBµ, m= 87.5% 2 6 % f =10kHz, Vi=10mV 40 44 48 dB µ RL= 68kΩ//82kΩ 30 45 60 mV/kHz V10 RL= 68kΩ//82kΩ 4.2 6.5 8.2 V VCO · APC Circuit VCO max. variable range (1) ∆fV (1) V13= 2V 0.8 1.5 2.5 MHz VCO max. variable range (2) ∆fV (2) V13= 3V –3.4 – 2.4 –1.4 MHz 3 4.5 VCO control sensitivity β 6 kHz/mV APC pull-in range (1) fAPC (1) + 0.85 +1.5 + 2.5 MHz APC pull-in range (2) fAPC (2) –3.5 – 2.5 –1.6 MHz 490 620 950 mVrms 42 47 dBµ 70 90 mA SIF Circuit Total detector output VO Input limiting voltage Vi (lim) fo= 4.5MHz, fm= 400Hz ∆f= ±25kHz, Vi=100dBµ fo= 4.5MHz, fm= 400Hz ∆f= ±25kHz, Vi=100dBµ DC Characteristics Circuit current 2 I4 + I12 50 AFC AGC TUNER 82Ω 12pF 0.33µH 0.01µF 820Ω 5.6kΩ 5.6Ω 680Ω 28 27 18Ω 0.01µF 0.001µF 0.68µH + SAW Filter – 4.7µH 0.01µF or 33µF 4.7µH 0.68µH 820Ω 68pF TLS63318 Audio Output 3 2 FM Det. Level Adj. 25 5.1kΩ 0.01µF 4 5 – + RF AGC 24 0.47µF VIF Amp. AN5138NK 1 GND (VIF Amp.) 28 27 26 5kB 6 IF AGC SIF Amp. 0.022µF 3.3µF 10kB 5.6kΩ 23 VTR SW 820Ω 0.047µF 7 – 21 8 – + Lock Det. GND AFC SW 0.01µF 18kΩ 1µF 3.3kΩ + 22 10kB 56pF 20pF 10 19 + 18 3.3µF 82kΩ 68kΩ VC C APC Det. 11 VCO Video Inverter Video Output TLI 67321 100pF 9 Video Det. AFC 120pF Noise Inverter 20 8.2µF 470Ω (VCO) 13 GND 14 15 16 17 0.47µF – + 47Ω 0.01µF (VCO) 12 560Ω 220Ω 4.7µF – + 33µF VC C (12V) TLII58705 (58.75MHz) 3.9kΩ 12pF 4.5MHz Trap 12µF ■ Application Circuit 22µH 680 Ω 4.5MHz Discriminator VC C (12V) 4.5MHz Filter ICs for TV AN5138NK 3