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Ordering number: EN 2289B
Monolithic Linear IC
LA7625, 7626 Video, Chroma and Deflection Circuit for Color Television Sets
Overview
The LA7625 and LA7626 are based on the LA7620 and LA7621 with the video circuit DC restoration factor changed to 100%. The LA7625 and LA7626 are small, multifunction ICs in which video, chroma and deflection circuits for NTSC color TV system are packaged in a shrink-type DIP30S (the same type as the earlier DIP22). In addition to being small, these ICs greatly reduce the number of components required and reduce the number of adjustments that must be made. By combining the LA7625 or LA7626 with the LA7555 or LA7577 VIF/SIF IC, or LA7832, LA7833, LA7837, or LA7838 vertical output IC, it is possible to process all functions of the color television signal system. Note that the LA7625 has a peak clipping circuit built into the video circuit, and is suited primarily for compact sets, while the LA7626 does not have a peak clipping circuit and is suited for larger sets.
Package Dimensions
unit : mm
3061-DIP30S
[LA7625,7626]
SANYO : DIP30S
Features
. Small package . Few peripheral components needed. . Few adjustments needed. (The functions listed below require no adjustments.) . Chroma VCO (APC) . Horizontal oscillation H-Hold . Vertical oscillation . Multifunctional. V-Hold
Specifications
Maximum Ratings at Ta = 25 C
Parameter Maximum supply voltage Maximum supply current Allowable power dissipation Operating temperature Storage temperature Symbol V16 max I22 max Pd max Topr Tstg Ta % 65 C Conditions Ratings 14.0 15.0 1100 -20 to +85 -55 to +125 Unit V mA mW C C
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62095HA (II) No.2289 - 1/6
LA7625, 7626
Operating Conditions at Ta = 25 C
Parameter Recommended supply voltage Recommended supply current Operating supply voltage range Operating supply current range Symbol V16 I22 V16 op I22 op Conditions Ratings 12.0 10.0 9.0 to 14.0 8.5 to 15.0 Unit V mA V mA
Electrical Characteristics at Ta = 25 C, VCC = V16 = 12 V, ICC = I22 = 10 mA
Parameter Circuit current [Deflection block] Horizontal supply voltage Sync separation input DC level Vertical free-running frequency 1 Vertical blanking pulse width Vertical output pulse width Vertical drive stage voltage gain Vertical output pulse start voltage Vertical pull-in operation start voltage Vertical blanking pulse wave peak value Horizontal free-running frequency Dependence of horizontal oscillation frequency on supply voltage Dependence of horizontal oscillation frequency on operating temperature Horizontal output pulse width Horizontal sync pull-in frequency range Horizontal output pulse start voltage Horizontal free-running frequency drift with time Hotizontal blanking threshold level Horizontal output drive current Horizontal oscillation control sensitivity Hold-down operation start voltage [Video block] Video tone control characteristics 1 Video tone control characteristics 1 Video voltage gain Contrast control center Contrast variable range Bright control characteristics 1 Bright control characteristics 2 Bright control characteristics 3 Frequency response DC restoration factor Symbol I16 VZ22 VS.S fV1 fV2 PW V.blk PW V.out GV Vcds Vvps VV.blk fH fH(V) fH/ T PW Hout fHpull VHpos fHT VH.blk IH.O BfH VHD f = 2 MHz, Video tone VR: 0 V f = 2 MHz, Video tone VR: 12 V f = 100 kHz, Video tone VR: 5.5 V f = 100 kHz, input: 100 mVp-p f = 100 kHz No signal, bright VR: 3 V No signal, bright VR: 6 V No signal, bright VR: 9 V f = 5 MHz/f = 100 kHz STAIR STEP signal reference value Reference value only (i.e. not specified) 0.55 for 5 seconds to 30 minutes after power is applied -50 11 2.0 236 0.65 0.75 4.5 -10 Differential versus 15.734 kHz Frequency deviation versus 15.734 kHz fH(8V)-fH(7V) -70 -10 10 0 0 130 10 Conditions No signal min 40 8.2 9.0 typ 53 8.7 9.3 fH/296.5 fH/224.5 19.25/fH 10.25/fH 16.2 max 75 9.2 9.6 Unit mA V V Hz Hz s s dB V V V Hz Hz
13
19 4.0 4.0
Ta = -10 C to 60 C
-1.5 23.5 400 -500 24.5
1.5 25.5
Hz/deg s Hz Hz V Hz V mA Hz/A V
5.5 30
RE1 RE2 AV eo eo BR1 BR2 BR3 f RDC
-5 12 12 0.2 16 8 5.8 -5
-3 15 15 0.3 18 6.3
-1 18 18 0.4 20 6.8 4.5
dB dB dB Vp-p dB V V V dB %
100
Continued on next page.
No.2289 - 2/6
LA7625, 7626
Continued from preceding page.
Parameter [Chroma Block] ACC amplitude characteristics 1 ACC amplitude characteristics 2 ACC phase characteristics 1 ACC phase characteristics 2 Killer operating point Color control center Maximum demodulation output Color contrast variable range Tint center Tint variable range APC pull-in range Demodulation output ratio 1 Demodulation output ratio 2 Demodulation angle 1 Demodulation angle 2 Color difference output DC voltage Color difference output DC deviation voltage Symbol ACC1 ACC2 ACCo1 ACCo2 EK B-Ycen B-Ymax Gcont Tcen T f APC R-Y/B-Y G-Y/B-Y R-Y/B-Y R-Y/B-Y V9,10,11 V9,10,11 Input: +6 dB Input :-20 dB Input: +6 dB Input: -20 dB Output Output Output Output B-Y: color VR 6 V B-Y: color VR 12 V B-Y B-Y: tint VR 6 V Conditions min -3 -7 -3 -7 -55 2.9 5.5 15.5 -17 +45 -35 300 0.81 0.24 96 -132 6.7 -200 typ 0 max +3 +2 +3 +7 -40 5.5 18.5 +7 Unit dB dB deg deg dB Vp-p Vp-p dB deg deg Hz 0.90 0.30 104 -122 7.2 0.98 0.38 112 -112 7.7 +200
-46 4.3 6.5 17.0 -5
Output B-Y
Tint VR 6 V Tint VR 6 V
deg deg V mV
No.2289 - 3/6
LA7625, 7626
Block Diagram of Equivalent Circuit Block and Examples of Peripheral Circuits
2nd Countdown
1st Countdown X-ray Protector
Hor. Predriver
Unit (resistance: , capacitance: F)
No.2289 - 4/6
LA7625, 7626
Vertical output IC (LA7832, 7833) connection circuit example Includes vertical stabilization circuit
Unit (resistance: , capacitance: F) Vertical stabilization circuit Vertical output IC (LA7837, 7838) connection circuit example
Unit (resistance: )
The following family of color TV NTSC system Y, chroma, and deflection ICs has been developed, each with different functions and characteristics. Select the IC that best suits the application and purpose for which the color TV set is intended.
Type number LA7620 LA7621 LA7625 LA7626 LA7629 Peak clipping O X O X X DC restoration factor 70% 70% 100% 100% 100% Secondary differential circuit input polarity Positive polarity Positive polarity Positive polarity Positive polarity *Negative polarity Video tone Soft Sharp O O O O O O O O X O Remarks
Video band 10MHz
* : Requires inverting amplifier
No.2289 - 5/6
LA7625, 7626
No products described or contained herein are intended for use in surgical implants, life-support systems, aerospace equipment, nuclear power control systems, vehicles, disaster/crime-prevention equipment and the like, the failure of which may directly or indirectly cause injury, death or property loss. Anyone purchasing any products described or contained herein for an above-mentioned use shall: 1 Accept full responsibility and indemnify and defend SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors and all their officers and employees, jointly and severally, against any and all claims and litigation and all damages, cost and expenses associated with such use: 2 Not impose any responsibility for any fault or negligence which may be cited in any such claim or litigation on SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors or any of their officers and employees jointly or severally. Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. SANYO believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties. This catalog provides information as of June, 1995. Specifications and information herein are subject to change without notice.
No.2289 - 6/6

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