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ICs for VCR
AN2492FH
Luminance and chrominance signal processing circuit for 8 mm video (NTSC)
Unit: mm
s Overview
The AN2492FH is a single chip LSI on which Y/C main signal processing circuit of NTSC normal 8 mm VCR is integrated. It is possible to reduce the system cost drastically thanks to the introduction of an external filter on to the chip and fc auto adjustment.
48 49
12.000.20 10.000.20 33 32 (1.25) 10.000.20 12.000.20 64 17 1 0.50 16
+0.10
s Features
* 5 V single power supply * Reduction of the external components and adjusting parts by adopting automatic adjustment filter * No need of glass delay lines * For NTSC (PAL: AN2493 pin-compatible)
(1.25) 0.100.10
0.18-0.05
0.15-0.05 1.950.20
+0.10
(1.00)
Seating plane
0 to 10 0.500.20
s Applications
* 8 mm VCR, 8 mm video camera
QFP064-P-1010
1
2
CTL1 CL in CDL in CCL det. G1 det. Y VCC NL in YDL in VNF LNC out ADD out G2 det. Video out YCL det. V mute CTL
Clamp det.
45 46 VF mute CTL 47 VF out
CONP C 35 L IMC 36 To CCD
ML out Y GND 42
Line in
50
SW 1
49
48
44
43
41
40
39
37 38
34
33
31 32
30
29
28
27
AGC det. OSD
PS SW 4 NOR
51
GCA2 Mute Trap Clamp HPF LIM HSS
C SW 6 P CONP Sub 2 R SW 12 SW 8 V mute CTL
AN2492FH
SW 21
SW 19
SW 0 R
GCA1 Amp. Clamp
s Block Diagram
52 CONP Y
OSD OSD
C SW 3
AGC Clamp Det. Det.
A
Clamp
Clamp
P
Test 9
REC PB VOL
P
53
AGC det. ATT
R
Main LPF
SS det. 54
N SW 5 PB DOC
SS Sync.
SS out RF det.
Line
FM in LIM CORR ATT
(d)
RF out
PBY
55 56 57 58
CNR N.C.
RF AGC
26
ME NF
DOC
25 W CTL
D LIM in BPF
P R SW 11 SW 18 R SW 2 CONP PB P
59
MIX
D LIM
MA in LIM
24
W/D Smear MOD Chroma DE/EM
P SW 15 RP SW 16 R R R
MDE
60
DEMOD
ME out (COR det. out)
MDC
61
Sub LPF
DCL in 62 63 DL
Line
DCL Amp.
Amp.
23 f CTL 0 22
HPF1 GCA3
DEV CTL
Clip in
Clip
VXO out Sub BM SLD F PC 4DIV CK VCO 1/4 1/8 REC AFC 1/46 1/8
64
90 PS
21 FM out (DOC) 20 GCA3 CTL 19 CE CTL 18
Burst DE/EM BM ACC
P SW 17 SW 14 P P
VXO in
1
VXO
REC APC det.
2 REC APC 3 VREF det. VREF
DP PC
LPF
R SW 13
CEC det. C sub 17 PB C in LPF
fSC out
4
1/4
CK PC
ACC det. CL det.
PBA PC
CACC LPF Trap HPF GCA4
CK
f det.
1/8
15
16
10 Data
6
7
9 CK
11 C GND
13 PB C out
12 C MIX in
14 CLCA det.
ICs for VCR
5 f det.
PB APC det.
8 CV CC
PG in
REC C out
GCA4 CTL
ICs for VCR
s Pin Descriptions
Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 VXO in REC APC det. VREF det. fSC out f det. PB APC det. PG in. C VCC CK Data C GND C MIX in PB C out CLCA det. REC C out GCA4 CTL PB C in CEC det. Chroma emph. CTL GCA3 CTL (APT CTL) FM out (DOC) DEV CTL f0 CTL ME out (COR det. out) W CTL MENF NL in LNC out CCL det. CDL in G1 det. ADD out Description Pin No. 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 GCA1 CTL CONP C LIMC To CCD G2 det. YDL in YCL det. CL in ML out Y GND Video out Y VCC VNF VF mute CTL VF out (BGP out) V mute CTL Clamp det. Line in AGC det. CONP Y REC PB VOL SS det. SS out RF det. FM in RF out DLIM in MD E MD C DCL in Clip in VXO out Description
AN2492FH
3
AN2492FH
s Absolute Maximum Ratings
Parameter Supply voltage Supply current Power dissipation
*2 *1, *3
ICs for VCR
Symbol VCC ICC PD Topr Tstg
Rating 5.5 100 359 -10 to +70 -55 to +125
Unit V mA mW C C
Operating ambient temperature Storage temperature
*1
Note) *1: Except for the power dissipation, operating ambient temperature and storage temperature, all ratings are for Ta = 25C. *2: The power dissipation shown is for the IC package at Ta = 70C. PD = 696 (mW) (Ta = 70C) in mounting on the glass epoxy printed circuit board of 50 x 50 x 0.8 (mm). *3: PD = 471 (mW) at supply voltage VCC = 4.8 V.
s Recommended Operating Range
Parameter Supply voltage Symbol VCC Range 4.7 to 5.2 Unit V
s Electrical Characteristics at VCC = 4.8 V, Ta = 25C
Parameter Consumption current 1 Consumption current 2 Consumption current 3 Consumption current 4 Internal reference voltage source REC overall Y-AGC control characteristics Y-AGC through mode View finder amp. frequency characteristics Video-OSD white mute level Video-OSD black mute level Video-OSD white mute CTL voltage Video-OSD black mute CTL voltage Video-OSD through CTL voltage Symbol ICC1 ICC2 ICC3 ICC4 VREF VME VAGC V26S fBA VOW VOB V48W V48B V48S Conditions Consumption current for recording Consumption current for playback Power save mode Camera power save mode Pin 3 voltage Adjust pin 53 to set pin 47 output at 1 V[p-p] Pin 47 output gain ratio with input 0.5 V[p-p] and 2.0 V[p-p] Pin 24 output at pin 50 input Output ratio of 5 MHz/100 kHz at input 100 kHz, 5 MHz DC voltage based on a pedestal level DC voltage based on a pedestal level Pin 48 input at inserting a record character Pin 48 input at inserting a record character Pin 48 input at inserting a record character Min 52 58 42 -8 -14 -1.5 200 -1.5 56 -7 3.6 2.0 0 Typ 72 78 62 -4.2 2.5 -12 0 250 0 68 0 Max 92 98 82 -1 -10 1.5 Unit mA mA mA mA V dB dB
300 mV[p-p] 1.5 80 12 4.8 2.6 1.0 dB IRE IRE V V V
4
ICs for VCR
s Electrical Characteristics at VCC = 4.8 V, Ta = 25C (continued)
Parameter Video-OSD quasi V level Video-OSD quasi V mute CTL voltage Video-OSD through CTL voltage Y-main-LPF frequency characteristics 1 Y-main-LPF frequency characteristics 2 Video amp. output amplitude Video amp. frequency characteristics Symbol VOV V48V V48G DfML1 DfML2 VVO fVI Conditions Min Typ -50 -2 2.0 0 68 0 -20 68 0 2.0 760
AN2492FH
Max 0 4.8 1.0 2 -25 2.25 1.5 80 12 4.8 2.6 1.0 20 4.8 1.0 80 12 4.8 2.6 1.0 2.25 65 960
Unit mV V V dB dB V[p-p] dB IRE IRE V V V mV V V IRE IRE V V V V[p-p] mV[p-p] ns
DC voltage difference based on sync. -100 tip in PB mode PB mode, pin 48 input PB mode, pin 48 input Input: 100 kHz, 2.5 MHz Output: 2.5 MHz/100 kHz Input: 100 kHz, 3.58 MHz Output: 3.58 MHz/100 kHz VF out 1 V[p-p] adjustment Input: 100 kHz, 5 MHz Output: 5 MHz/100 kHz DC voltage based on a pedestal level DC voltage based on a pedestal level Pin 48 = 0 V at inserting the display characters Pin 48 = 0 V at inserting the display characters Pin 48 = 0 V at inserting the display characters DC voltage based on sync. tip in PB mode PB mode, pin 48 input PB mode, pin 48 input DC voltage based on a pedestal level DC voltage based on a pedestal level Pin 48 = 0 V at inserting the display characters Pin 48 = 0 V at inserting the display characters Pin 48 = 0 V at inserting the display characters Pin 48 = 0 V at inserting the display characters Input sync. level Measurement of sync. delay at pin 40 and pin 55 2.0 0 -5 1.75 -1.5 56 -7 3.6 2.0 0 -60 2.0 0 56 -7 3.6 2.0 0 1.75 560
View finder OSD white mute level VBOW View finder OSD black mute level VBOB View finder OSD white mute CTL voltage View finder OSD black mute CTL voltage View finder OSD through CTL voltage View finder OSD quasi V level View finder OSD quasi V mute CLT voltage View finder OSD through CTL voltage PB OSD white mute level PB OSD black mute level PB OSD white mute CTL voltage PB OSD black mute CTL voltage PB OSD through CTL voltage PB OSD off Sync. separation min. input sensitivity Sync. separation pulse delay amount V46W V46B V46S VBOV VB48V VB48S VPOW VPOB V46W V46B V46S VVOO VSS tSS
5
AN2492FH
s Electrical Characteristics at VCC = 4.8 V, Ta = 25C (continued)
Parameter Sync. separation output amplitude 1 Sync. separation output amplitude 2 Non linear emphasis 1 Non linear emphasis 2 Non linear emphasis 3 Non linear de-emphasis 1 Non linear de-emphasis 2 Non linear de-emphasis 3 Dark clip level White clip level FM carrier interleave FM modulator oscillation frequency FM modulator deviation CTL FM modulator secondary distortion Y-FM-GCA output amplitude 1 Y-FM-GCA output amplitude 2 PB-Y-RFAGC output amplitude PB-Y-RFAGC output secondary distortion PB-over-all 1 (NOR) FM demodulation linearity 1 Dropout detection on level Symbol VSSH VSSL fRNL1 fRNL2 fRNL3 fPNL1 fPNL2 fPNL3 VCD VCW VCI f0 fDEV 2fFM VFMS VFML V58 2f58 VNOR VNOR VDOC Conditions Pin 55 output amplitude Pin 55 output amplitude Input: 0 dB, output: 1 MHz/10 kHz Input: -10 dB, output: 1 MHz/10 kHz Input: -20 dB, output: 1 MHz/10 kHz Input: 0 dB, output: 1 MHz/10 kHz Min 4.0 1.0 3.7 6.3 -5.0 Typ 3.0 6.2 9.3 -3.0 -7.5 -8.5 100 220 1.64 4.2 2.4 420 1.0 97 -12 4 8 - 0.3 - 0.8 -2.3 -6.5 -6.5 70 - 0.2
ICs for VCR
Max 0.4 5.0 8.7 12.3 -1.0 -5.0 -5.5 110 -30 -30 110 -7 10 11 0.4 0.5 0.5 0 -3.0 -3.0 95 1.8
Unit V V dB dB dB dB dB dB % % mV[p-p] MHz MHz/V dB
Input: -10 dB, output: 1 MHz/10 kHz -10 Input: -20 dB, output: 1 MHz/10 kHz -11.5 Fixed Adjust at pin 25 Apply voltage to pin 7 Adjust at pin 23 Apply voltage to pin 27, adjust at pin 22 Pin 21 output Pin 20 = 0 V Pin 20 = 4.8 V Input 50 mV[p-p], 200 mV[p-p], f = 5 MHz Input 100 mV[p-p], f = 5 MHz Pin 47 output, adjust pin 53 Input 3 MHz, 5 MHz, 7 MHz Pin 63 = 4.8 V, adjust pin 53 Input pin 57, f = 5 MHz Input pin 57, f = 5 MHz Input pin 57, f = 5 MHz Input pin 57, pin 21 output Input pin 57, pin 21 output Input 0 dB, NC1 mode output 1 MHz/50 kHz Input -10 dB, NC1 mode output 1 MHz/50 kHz Input -20 dB, NC1 mode output 1 MHz/50 kHz Input -30 dB, NC1 mode output 1 MHz/50 kHz Input -30 dB, NC1 mode output 1 MHz/50 kHz, NC off Input pin 63, pin 41 output Input 0 dB 90 370 345 90 -17 1 5 2.8 -3 -3.5 -6 -10 -10 45 -2.2
100 mV[p-p] mV[p-p]
495 mV[p-p] dB V[p-p] % dB dB H V V dB dB dB dB dB mV dB
Dropout detection off hysteresis VDOC Dropout detection ENV off VDOCH
Dropout detection output high-level VP21H Dropout detection output low-level Noise canceller frequency characteristics 1 Noise canceller frequency characteristics 2 Noise canceller frequency characteristics 3 Noise canceller frequency characteristics 4 NC off mode Clip comp. limiter level Line noise canceller frequency characteristics 1 6 VP21L fNC11 fNC12 fNC13 fNC14 fNCOFF VCL fLNC1
ICs for VCR
s Electrical Characteristics at VCC = 4.8 V, Ta = 25C (continued)
Parameter Line noise canceller frequency characteristics 2 Line noise canceller (off) C-BPF frequency characteristics 1 C-BPF frequency characteristics 2 C-BPF frequency characteristics 3 C-BPF frequency characteristics 4 REC APC pull-in range 1 REC APC pull-in range 2 Xtal output amplitude Xtal oscillation frequency ACC output amplitude ACC control characteristics ACC maximum gain C ACC output characteristics Burst emphasis amount Burst de-emphasis amount Chroma de-emphasis characteristics 1 Chroma de-emphasis characteristics 2 Chroma de-emphasis characteristics 3 Chroma de-emphasis characteristics 4 REC chroma out level 1 REC chroma out level 2 Color killer on level Color killer off level PB APC pull-in range 1 PB APC pull-in range 2 CNR characteristics 1 CNR characteristics 2 PB burst level Clip comp. gain Symbol fLNC2 fLNC3 fBP1 fBP2 fBP3 fBP4 +fSC -fSC VFSC fSC VAC VAC VACM VCAC VBU VBD VCE1 VCE2 VCE3 VCE4 VRCO1 VRCO2 CKON CKOFF fXO1 fXO2 CNR3 CNR4 VPBC VCG Conditions Input: -30 dB Input: -30 dB Input: 100 mV[p-p], output: 3.28 MHz/3.58 MHz Input: 100 mV[p-p], output: 3.88 MHz/3.58 MHz Input: 100 mV[p-p], output: 2.09 MHz/3.58 MHz Input: 100 mV[p-p], output: 5.07 MHz/3.58 MHz Input: fSC +300 Hz Pin 4 output (specified Xtal) Input: fSC -300 Hz Pin 4 output (specified Xtal) Pin 4 output, at lock (specified Xtal) Pin 4 frequency deviation at PB Pin 34 input, pin 15 output (test 3) Level ratio of -14 dB to 6 dB input Input/output level ratio Output burst ratio at input chroma signal 0 dB and -14 dB Pin 34 input, pin 15 output Pin 17 input, pin 13 output Input: 0 dB, output: fsc +500/fsc Input: 0 dB, output: fsc -500/fsc Input: -10 dB, output: fsc -500/fsc Input: -10 dB, output: fsc +500/fsc Pin 16 = 0 V, pin15 output Pin 16 = 4.8 V, pin 15 output Pin 34 input signal, 100 mV[p-p] 2 mV[p-p], pin15 output DC Pin 34 input signal, 0 mV[p-p] 40 mV[p-p], pin15 output DC Pin 40, pin 17 input, pin 13 output Pin 40, pin 17 input, pin 13 output Pin 40 white 50%, pin 52: B+C signal input Pin 40 white 50%, pin 52: B+C signal input Pin 13 output burst level Input pin 63, pin 41 output Min -15.0 -1.5 -2.5 -2.5 275 320 -50 350 -2.0 14 1.0 4.0 -8.5 -3.3 -3.3 -5.8 -5.8 230 1.5 -100 -100 -13 -13 110 -8.5 Typ -8.5 0 - 0.5 - 0.5 520 450 0 20 3 6.0 -6.0 1.9 -9 -9 200 -6
AN2492FH
Max -3.0 1.5 -1.5 -1.5 -20 -20 -275
Unit dB dB dB dB dB dB Hz Hz
720 mV[p-p] 50 Hz
600 mV[p-p] 2.0 5.0 8.0 -3.5 1.3 1.3 -1.0 -1.0 0.4 2.3 100 100 -5.5 -5.5 -3.5 dB dB dB dB dB dB dB dB dB
100 mV[p-p] mV[p-p] V V Hz Hz dB dB
280 mV[p-p] dB 7
AN2492FH
s Terminal Equivalent Circuits
Pin No. 1 Symbol VXO in
1 2.38 k 3 k
ICs for VCR
Equivalent circuit
Description 500 mV[p-p] f = 3.5795 MHz
Voltage (V) DC 2.76
1.62 k
2
REC APC det.
Det. pin
DC 2 0.75
5 k 2
3
VREF det.
Bias pin
DC 2.48
3 k
3
4
fSC out
AC 540 mV[p-p] f = 3.5795 MHz
DC 2.7
4
8
ICs for VCR
s Terminal Equivalent Circuits (continued)
Pin No. 5 Symbol f det. Equivalent circuit Det. pin Description
AN2492FH
Voltage (V)
3 k 5
6
PB APC det.
3 k 3 k 40 k
Det. pin
DC 1.974 0.75
6
7
PG in
* FM out comes to high frequency with high carrier interleave
0 4.8 (reference: DC 2.5 V)
30 k 7
4.8 V 0V
8 9
C VCC CK
0 4.8 (reference: DC 2.5 V)
10 k 9
4.8 V
0V
9
AN2492FH
s Terminal Equivalent Circuits (continued)
Pin No. 10 Symbol Data Equivalent circuit Description
ICs for VCR
Voltage (V) 0 4.8 (reference: DC 2.5 V)
4.8 V
10 k 10
0V
11 12
C GND C MIX in
12
B: 200 mV[p-p] (NTSC)
DC 2.475
7.8 k 20 k 3 k
f = 3.5795 MHz (Input at a low impedance.)
13
PB C out
DC 2.145
13
B: 200 mV[p-p] f = 3.5795 MHz 14 CLCA det.
14
200 3 k 3 k
Det. pin
DC 3.62 0.75
3 k
10
ICs for VCR
s Terminal Equivalent Circuits (continued)
Pin No. 15 Symbol REC C out f = 743 kHz Equivalent circuit Description
AN2492FH
Voltage (V) REC mode DC 2
15
16
CTL 4
REC out level adjustment
0 to 4.8
16 30 k
17
PB C in B: 100 mV[p-p] f = 743 kHz
17 30 k 3 k
DC 2.75
Being inputted into PB-C-in with Y+C signal, Y signal is 400 mV[p-p] 18 CE C
5 k 3 k 18
Det. pin
DC 2.9
11
AN2492FH
s Terminal Equivalent Circuits (continued)
Pin No. 19 Symbol CE CTL
10 k 19 10 k
ICs for VCR
Equivalent circuit
Description Chroma emphasis, de-emphasis adjustment pin Adjustment off at 1 V or less
Voltage (V) 0 to 4.8
20
CTL 3
20
100 k 25 k 10 k
REC mode (GCA3 control)
0 to 4.8 (1.5 to 3.0)
100 k
21
FM out
3 k 100 mV to 400 mV
REC mode DC 3.35
21
PB mode: 2.5 V or more at DOC on 0.4 V or less at DOC off 22 DEV CTL Adjust to 5.4 MHz with DC at 100% white. 1.3 to 3.7 typ. 2.5
3 k 22
23
f0 CTL
Adjust FM out to 4.2 MHz at sync. tip.
1.3 to 3.7 typ. 2.5
3 k 23
12
ICs for VCR
s Terminal Equivalent Circuits (continued)
Pin No. 24 Symbol ME out
30 k 30 k 30 k 30 k
AN2492FH
Equivalent circuit
Description
Voltage (V) DC 2.195
10 k
250 mV[p-p]
24
25
W CTL
25 48 k
Adjust a white clip level to 220%.
1.5 to 3.7 typ. 2.0
26
MENF
3 k 26
250 mV[p-p]
DC 2.19 (sync. tip) (With externally attached feedback resistor R)
27
NL in
DC 2.93 (sync. tip)
3 k 27
500 mV[p-p]
13
AN2492FH
s Terminal Equivalent Circuits (continued)
Pin No. 28 Symbol LNC out Equivalent circuit Description
ICs for VCR
Voltage (V) DC 3.14 (sync. tip)
28
500 mV[p-p]
29
CCL det.
Det. pin
DC 2.66 0.75
3 k 3 k
29
30
CDL in
30 510 k 50 k 3 k 50 k 3 k
150 mV[p-p]
DC 2.755
B: 143 mV[p-p] f = 3.5795 MHz 31 G1 det.
31 3 k 3 k
Det. pin
DC 3.515 0.75
14
ICs for VCR
s Terminal Equivalent Circuits (continued)
Pin No. 32 Symbol ADD out Equivalent circuit Description
AN2492FH
Voltage (V) DC 2.0
Adjust pin 33 voltage (CTL1) so as not to mix a chroma signal.
32
33
CTL 1
80 k 3 k 33
Adjust so that a comb shape chroma level adjustment pin 32 (ADD out) becomes Y signal only.
DC 2.994
120 k
34
CONP C
10 k 10 k 34 10 k
DC 1.96
B: 286 mV[p-p] f = 3.5795 MHz 35 LIMC
30 k 3 k
Det. pin
30 k 3 k 35
DC 2.7
15
AN2492FH
s Terminal Equivalent Circuits (continued)
Pin No. 36 Symbol To CCD Equivalent circuit Description
ICs for VCR
Voltage (V) DC 2.031 (sync. tip)
20 k 20 k 60 k 16.7 k 3 k 150 mV[p-p] 40 k 20 k
36
B: 143 mV[p-p] f = 3.5795 MHz Det. pin DC 3.515 0.75
37
G2 det.
37 3 k3 k
38
YDL in
38 50 k 3 k 50 k 3 k
150 mV[p-p]
DC 2.622
B: 143 mV[p-p] f = 3.5795 MHz 39 YCL det.
39 3 k 3 k
Det. pin
DC 2.66 0.75
16
ICs for VCR
s Terminal Equivalent Circuits (continued)
Pin No. 40 Symbol CL in
40 3 k
AN2492FH
Equivalent circuit
Description
Voltage (V) DC 3.4 (sync. tip)
143 mV[p-p]
500 mV[p-p] with 100% white input 41 ML out DC 1.897
30 k
20 k
41
143 mV[p-p]
500 mV[p-p] with 100% white input 42 43 Y GND Video out 2 V[p-p] with 100% white input DC 1.236 (sync. tip)
3 k 60 k 43 20 k 45
0.6V[p-p]
B: 0.57 V[p-p] f = 3.5795 MHz DC 1.237 (sync. tip)
44 45
Y VCC VNF
3 k 60 k 43 20 k 45
150 mV[p-p]
B: 143 mV[p-p] f = 3.5795 MHz Video amp. off when pin 45 is 0.3 V or less
17
AN2492FH
s Terminal Equivalent Circuits (continued)
Pin No. 46 Symbol VF mute Equivalent circuit Description VF amp.-OSD-CTL voltage
ICs for VCR
Voltage (V) 0 V to 4.8 V
10 k 46
47
VF out
DC 1.968 (sync. tip)
47
300 mV[p-p]
B: 286 mV[p-p] f = 3.5795 MHz (1 V[p-p] with 100% white input) 48 V mute
48 10 k 10 k
Video amp.-OSD-CTL voltage
0 to 5
49
Clamp det.
Det. pin
DC 3.506
3 k 49
3 k
18
ICs for VCR
s Terminal Equivalent Circuits (continued)
Pin No. 50 Symbol Line in Equivalent circuit Description
AN2492FH
Voltage (V) DC 3.2
3.5 k 50 60 k
41.5 k
286 mV[p-p]
B: 286 mV[p-p] f = 3.5795 MHz (AGC through mode is 6 dB down.) 51 AGC det. Det. pin DC 1.63
375
3 k
100 k 51
52
CONP Y
60 k 3.5 k
52
DC 3.2
41.5 k
286 mV[p-p]
(AGC through mode is 6 dB down.) 53 REC PB VOL
53
200 3 k 3 k
3 k
REC mode: Adjust to 2 V[p-p] at video out. 0.7 V to 4.8 V PB mode: Adjust to 2 V[p-p] at video out. 0.7 V to 4.8 V Filter off mode: 0 V to 0.3 V
Normally 0 4.8 Filter off 0 0.3
19
AN2492FH
s Terminal Equivalent Circuits (continued)
Pin No. 54 Symbol SS det. Equivalent circuit Det. pin Description
ICs for VCR
Voltage (V) DC 2.781
3 k
500 54 40 k
100 55 100 200 k
55
SS out
500 k
4 V 0.4 V
4V or more 0.4 V or less
56
RF det.
56 300
Det. pin
DC 3
3 k
3 k
57
FM in
3 k 57 23 k 20 k
200 mV[p-p]
DC 3.26
20
ICs for VCR
s Terminal Equivalent Circuits (continued)
Pin No. 58 Symbol RF out Equivalent circuit Description 400 mV[p-p]
AN2492FH
Voltage (V) DC 2.40
58
59
DLIM in
400 mV[p-p]
DC 2.49
3 k 59 30 k
60
MDE
61
DC (emitter) 1.6
60
61
MDC
61
DC 3.4
60
21
AN2492FH
s Terminal Equivalent Circuits (continued)
Pin No. 62 Symbol DCL in
62 20 k 3 k
ICs for VCR
Equivalent circuit
Description
Voltage (V) DC 3.421
63
Clip in
DC 3.4
1 k
19 k 63 900 20 k
150 mV[p-p]
64
VXO out
350 mV[p-p]
DC 3.33
64
f = 3.5795 MHz
22
VCC (Y) = 4.8 V
0.01 100 0.01 3.3 F F F F 0.1 F 82 k 100 F 0.01 F
VCC (Y) = 4.8 V
1 k
9
ICs for VCR
16
NTSCCD-DL
8 1
VCC (Y) = 4.8 V
VF out Open
330 75 1 k 100 F 0.01 F 1 M 0.01 F 1 F V46 1 F 3.3 F 10 F V33 0.01 F 75 10 F 10 F 10 F EQ 1 F 1 F
Video out
s Application Circuit Example
V48
4.7 F 100 F
CONP C in DL EQ
48
47
45 46
44
43
41 42
40
39
37 38
36
35
33 34
0.22 F
Line in
3.3 F
49 50 51 52
3.3 F
32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17
ADD out
CONP in
75 V53 0.22 F 0.47 F 6 800 pF
75 10 F
VR 3.3 F 0.22 F 720 pF 470 V25 1.2 k V21 V23 150 pF
(JOG*DOC) High
53 54
SS out 55
56
0.01 F
PB FM in
57 58 59
27 pF 1.2 k 1.2 k 720 pF 0.01 F
75
60 61 62 63 64 1 2 4 3 5 6 8 7 9 10 12 11 13 14 16 15
REC: FM out (PB: DOC out)
V20 0.01 F V19
VCC (Y) = 4.8 V
1.2 k 47 pF 470 C1 3.3 F
470
PB C in
0.01 F 75
Xtal (*1) 0.1 F 82 pF 22 H C2 0.01 F 0.47 F 1 F 0.01 F 1 F 22 k 0.01 F 10 k 3 k 0 pF 1 F 0.01 F 10 k 100 F 10 F 100 F V16 10 k
PG in
10 k
CK Data
C VCC
4.8 V
REC out
Note) *1: Optimize the C1 and C2 to meet Xtal characteristics. 1. Adjust variable resistor (VR), V33 voltage and variable resistor in that order so as to get a minimum level of chroma signal at ADD out (pin 32) output. (REC mode, line mode, chroma 100% input) 2. The application circuit diagram in this data is just a typical circuit example as a reference data for use, and whatever the loss caused or the infringement of the third party's industrial property right by the use of this circuit is not our responsibility.
AN2492FH
23

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