Page 1
Ordering number : ENN4265A
D2599TH (OT)/O202TS No. 4265-1/6
LA7672
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
Color TV Single-Chip Signal Processor for
NTSC Systems (PLL Detection)
Monolithic Linear IC
Any and all SANYO products described or contained herein do not have specifications that can handle
applications that require extremely high levels of reliability, such as life-support systems, aircraft’s
control systems, or other applications whose failure can be reasonably expected to result in serious
physical and/or material damage. Consult with your SANYO representative nearest you before using
any SANYO products described or contained herein in such applications.
SANYO assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other
parameters) listed in products specifications of any and all SANYO products described or contained
herein.
Overview
The LA7672 is a single-chip IC for color TVs based on
the NTSC system with on-chip circuit for all VIF, SIF,
video, chroma and deflection signal processing.
Features
[VIF]
• PLL detection (high video and audio quality)
• High-gain VIF amplifier
• High speed AGC
• On-chip APC time constant switch
[SIF]
• Simultaneous sound IN/OUT
• Video/audio simultaneous muting, or audio-only muting
possible
[Audio-visual switch]
• Internal/external audio-visual switch (VCC= 9 V)
Delay line Video external, audio external Switch rating
OFF IN 6.9 to 9.0 V
OFF EXT 4.7 to 6.6 V
ON EXT 2.4 to 4.3 V
ON IN 0 to 2.1 V
[OSD]
• RGB 3 input
• RGB linear up (– 6 dB input: 2 V to 5 V)
• Fast blanking (B input combined use)
[Chroma]
• On-chip ACC filter, On-chip killer filter, Killer-circuit
hysteresis operation
• On-chip carrier filter
[Video]
• Black enhancement
• On-chip delay line
• Wide band width (9 MHz): delay line short
• Duel rank on-chip differentiation circuit also available
for soft also
• S input supported (VCR application)
• Variable DC transmission volume available (externally
attached circuit adjustment)
[Deflection]
• Adjustment-free horizontal, vertical synchronization
• Duel AFC system with excellent anti-noise
characteristics
• External adjustment of vertical synchronization
sensitivity
• Vertical size is constant with no-signal
• Highly stable image during playback of copy protected
tapes (macro-vision tape)
• High stability against VCR skew distortion
Package Dimensions
unit : mm
3128-DIP52S
46.0
0.48 1.05 1.78
0.75
4.25
15.24
0.25
13.8
0.51min
5.1max
3.8
261
2752
SANYO: DIP52S
[LA7672]
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LA7672
No. 4265-2/6
Parameter Symbol Conditions Ratings Unit
Maximum Supply Voltage
V11 max 11 V
V14 max 11 V
Maximum Supply Current I30max 16 mA
Allowable Power dissipation Pd max Ta ≤ 60°C 1.35 W
Operating Temperature Range Topr –10 to +65 °C
Storage Temperature Range Tstg –55 to +150 °C
Circuit Current
I44 –6 mA
I6 –3 mA
FBP Input Current
I22 max Peak current 5 mA
I21 max Peak current 10 mA
Specifications
Maximum Ratings at Ta = 25°C
Parameter Symbol Conditions Ratings Unit
Recommended Supply Voltage
V11 9 V
V14 9 V
Recommended Supply Current I30 13 mA
Operating Voltage Range
V11op 8 to 9.5 V
V14op 8 to 9.5 V
Operating Current Range I30op 10 to 16 mA
Operating Conditions at Ta = 25°C
Parameter Symbol Conditions
Ratings
Unit
min typ max
[Circuit Voltage and Current]
Horizontal Supply Voltage V30 V
CC
= 9V, ICC= 13mA 7.3 7.8 8.3 V
Supply Current I11 + 14 V
CC
= 9V, ICC= 13mA, IFAGC 4V 102 120 138 mA
[VIF]
Quiescent Video Output Voltage V44 Quiescent 4.3 4.7 5.1 V
Quiescent AFT Output Voltage V47 Quiescent 3.1 4.7 6.1 V
Maximum RFAGC Voltage V49H CW = 85dBµ, RFAGCVR = min 7.6 8.0 8.3 V
Minimum RFAGC Voltage V49L CW = 85dBµ, RFAGCVR = max 0 0.01 0.3 V
Input Sensitivity Vi
VIF input level for video output at 0.8Vp-p
33 39 45 dBµ
(40% mod).
AGC Range GR
Maximum input (V0 = 0.8Vp-p) - input sensitivity
54 62 dB
Maximum Permissible Input Vi max VIF input level for video output at +1dB 97 104 dBµ
Video Output Detection V
O
44 Vi = 80dBµ, AM = 78% mod 1.7 2.0 2.3 Vp-p
Differential Gain DG Vi = 80dBµ, AM = 87.5%, video mod 3.0 10 %
Differential Phase DP Vi = 80dBµ, AM = 87.5%, video mod 1.0 10 deg
Video S/N S/N
Vi = 80dBµ, 20 log 1.46 (Vp-p)
47 54 dB
noise (Vrms)
Synchronization Signal Tip Level V44 TIP CW = 80dBµ 2.1 2.4 2.7 V
Frequency Characteristic f
C
Frequency at video output of –3dB 6.0 9.0 MHz
920 kHz VIF Intermodulation I920 V3.58MHz/V920kHz, Vi = 80dBµ 35 42 dB
Maximum AFT Output Voltage V47H CW = 80dBµ, frequency change 8.3 8.7 9.0 V
Minimum AFT Output Voltage V47L CW = 80dBµ, frequency change 0.1 0.3 0.8 V
AFT Detection Sensitivity Sf CW = 80dBµ, frequency change 45 70 100
mV/kHz
AFT Switch Operation Start Voltage V
AFTSW
Measuring with sweep signal 0.5 1.0 V
Black Noise Threshold Level V
BTH
Measuring with sweep signal 1.1 1.4 1.7 V
APC Pull-in Range (U)2 f
PU-2
CW = 80dBµ, fP= 53MHz to 64MHz 0.8 1.7 MHz
APC Pull-in Range (L)2 f
PL-2
CW = 80dBµ, fP= 53MHz to 64MHz –2 –1 MHz
VCO Maximum Variable Range
∆f
U
Quiescent 0.9 1.7 MHz
∆f
L
Quiescent –2 –1 MHz
VCO Control Sensitivity b Quiescent 1.5 3.0 5.5
kHz/mV
Operating Characteristics at Ta = 25°C, VCC= V11 = V14 = 9 V, ICC= I30 = 13 mA
Continued on next page.
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LA7672
No. 4265-3/6
Parameter Symbol Conditions
Ratings
Unit
min typ max
[Audio-visual Switches]
Video Output DC Voltage V38 Quiescent 3.0 3.4 3.8 V
Internal Video Input Voltage V42 Quiescent 4.4 4.8 5.2 V
External Video Input Voltage V40 Quiescent 4.4 4.8 5.2 V
External Audio Input Voltage V3 Quiescent 5.2 5.6 6.0 V
[SIF AF]
SIF Limiting Voltage Vi lim
SIF output level for detection output at –3dB
40 47 dBµ
FM Detection Output Voltage V
O
1 Vi = 100dBµ, ∆f = ±25kHz 380 550 750
mVrms
FM Detection Output Distortion Ratio THD Vi = 100dBµ, ∆f = ±25kHz 0.4 1.0 %
AM Rejection AMR
Vi = 100dBµ, FM : ∆f = ±25kHz
40 60 dB
AM : 30 %
AF Amplifier Voltage Gain G
AF
Vi = 100mVrms, f = 400Hz 18 20 22 dB
AF Maximum Output Voltage V
O
6 max
Output level for AF amplifier
2.0 2.8 Vrms
output distortion at 10%
AF Electronic Attenuator Range ATT Vi = 200mVrms, f = 400Hz 70 80 dB
[Video]
Black Enhancement Threshold B
STH
APL variable 40 50 60 IRE
Maximum Black Enhancement Gain BS max APL variable –35 –27 –20 IRE
Soft Video Tone Variable Range ∆Soft
f = 2MHz, 100mVp-p
–6 –4 –2 dB
video tone VR: 4V
→ 0V
Sharp Video Tone Variable Range ∆Sharp
f = 2MHz, 100mVp-p
7 10 13 dB
video tone VR: 4V → 9V, contrast VR: 6V
Video Voltage Gain Audio-visual
GV9V
f = 100kHz, 100mVp-p, contrast VR: 9V
,
15 18 21 dB
Switch 9V
video tone VR: 4V
Video Voltage Gain Audio-visual
GV0V
f = 100kHz, 100mVp-p, contrast VR: 0V,
15 18 21 dB
Switch 0V
video tone VR: 4V
Contrast Control Center C
CEN
f = 100kHz, 100mVp-p, contrast
0.4 0.48 0.57 Vp-p
VR: 6V
Contrast Variable Control Range ∆C
V
Contrast VR: 3V → 9V 18 20 22 dB
B R
H
Bright VR: 1.5V 5.5 6.5 7.5 V
Bright Control B R
CEN
Bright VR: 4.5V 2.3 2.8 3.3 V
B R
L
Bright VR: 7V 0.3 1.2 V
DL Off Frequency Characteristics f
V
9V
Contrast VR: 6V, video tone
7 9 MHz
VR: 4V, 3dB down
DL On Frequency Characteristics fV0V
Contrast VR: 6V, video tone
2.5 3 MHz
VR: 4V, 3dB down
DC Transmission R
DC
Input: stair step signal, 500mVp-p 100 103 106 %
Delay Line Delay T
DL
Input: white 100% 290 340 390 ns
[Chroma]
ACC Amplitude Characteristics
A
CC
1 +6dB –3 0 +3 dB
A
CC
2 –20dB –7 +2 dB
ACC Phase Characteristics
A
CCP
1 +6dB –3 0 +3 deg
A
CCP
2 –20dB –7 +7 deg
Killer Operation Point E
K
–35 –28 –21 dB
Color Control Color Residual E
C
min Color VR: 0V, contrast VR: 9V 30 mVp-p
Color Control Center E
C CEN
Color VR: 4.5V, contrast VR: 6V 1.2 1.8 2.4 Vp-p
Maximum Demodulation Output E
C
max Color VR: 9V, contrast VR: 9V 3.2 4.0 Vp-p
Color Contrast Variable Range ∆C
C
Color VR: B – Y = 2.5Vp-p,
17.5 19.5 21.5 dB
contrast VR: 3V → 9V
Tint Control Center T
CEN
Tint VR: 4.5V, color VR: 4.5V,
0 12 24 deg
contrast VR: 6V
Tint Variable Range ∆T
Tint VR: 0V ← 4.5V → 8V,
±40 deg
color VR: 4.5V, contrast VR: 6V
APC Pull-in Range ∆f
APC
±300 Hz
R/B
Monochrome signal, contrast VR: 6V,
0.81 0.90 0.98
Demodulator Output Ratio
color VR: B – Y = 1Vpo
G/B
Monochrome signal, contrast VR:6V,
0.24 0.30 0.38
color VR: B – Y = 1Vpo
Continued on next page.
Continued from preceding page.
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LA7672
No. 4265-4/6
Parameter Symbol Conditions
Ratings
Unit
min typ max
RB
Monochrome signal, contrast VR: 6V,
97 105 113 deg
Demodulator Phase Angle
color VR: B – Y = 1Vpo
GB
Monochrome signal, contrast VR: 6V,
–130 –120 –110 deg
color VR: B – Y = 1Vpo
Demodulator Output DC Voltage V
C-Y
Burst signal only, color VR: 0V 4.7 5.2 5.7 V
Demodulator Output DC Offset Voltage
∆V
C-Y
Burst signal only, color VR: 0V –200 0 +200 mV
Demodulator Output Residual Carrier
E car Quiescent, killer off, color VR: 0V 0.03 Vp-p
[OSD]
Blanking Pulse Threshold Level TH
BL
C – IN: color bar, B – IN: variable 0.5 0.8 1.1 V
– Y Out DC Voltage (OSD mode) V
–Y
B–IN : 1.5V 2.5 2.8 3.1 V
TH
R
R – IN: variable, B – IN: 1.5V
RGB – In Threshold Level TH
G
G – IN: variable, B – IN: 1.5V 1.9 2.2 2.5 V
TH
B
B – IN, variable
V
R3V
RGB – Y Out DC Voltage (3 V) V
G3V
R, G, B – IN :3V 5.2 5.5 5.8 V
V
B3V
V
R4V
RGB – Y Out DC Voltage (4 V) V
G4V
R, G, B – IN : 4V 5.7 6.0 6.3 V
V
B4V
V
R5V
RGB – Y Out DC Voltage (5 V) V
G5V
R, G, B – IN : 5V 6.2 6.5 6.8 V
V
B5V
[Deflection]
Synchronization Separator Input DC Level
V
SDC
6.0 6.3 6.6 V
Vertical Free-Running Period T
V
free 262 262.5 263 H
Maximum Vertical Synchronization Period
TVmax
Input: horizontal synchronization signal only
296.5 297 297.5 H
Minimum Vertical Synchronization Period
TVmin 224.5 225 225.5 H
Vertical Blanking Pulse Width P
W VBL
20.25 20.5 20.75 H
Vertical Blanking Pulse Wave
P
H VBL
7.0 7.5 V
Height Value
Vertical Output Pulse Width P
W VOUT
8.25 8.5 8.75 H
V
OUT H
5.7 6 6.3 V
Vertical Output Voltage V
OUT M
4.2 4.5 4.8 V
V
OUT L
0.3 V
Vertical External Trigger Load Resistance
R
TR
2.7 3.6 kΩ
Vertical Automatic Synchronization Stop Voltage
V
SAS
1.9 2.4 V
Vertical Output Pulse Start V
CC
Voltage S
VV
4 V
Horizontal Free-Running Frequency Deviation
∆fHDeviation from 15.734kHz –90 +30 +150 Hz
Dependence of Horizontal Free-Running
∆f
H VCC
V30 = 6.7V, reference value 2 Hz
Frequency on V
CC
Horizontal Pull-in Range f
H PULL
Deviation from 15.734kHz ±400 Hz
Horizontal Output Pulse Width P
WH OUT
21.8 23.8 25.8 µs
H
PF
12 µs
Horizontal Output Pulse Phase H
P CEN
3.4 4.4 5.4 µs
H
PR
0 µs
Horizontal Output Pulse Start VCCVoltage
S
HV
4.5 5.3 V
AFC II FBP Peak Voltage F
BPH
4.1 4.6 5.1 V
Burst Gate Pulse Delay Time Td
BGP
0.2 0.6 1.2 µs
Burst Gate Pulse Width P
W BGP
2.7 3.7 4.7 µs
VCR SW Input Voltage VCR 1.3 2.0 V
X-ray Protector Circuit Operation Input Voltage
V
HD
0.64 0.74 0.84 V
Horizontal Synchronization Detection
H coin 4.2 4.5 4.8 V
Threshold Level
Continued from preceding page.
Page 5
LA7672
No. 4265-5/6
Sample Application Circuit
Page 6
LA7672
PS No. 4265-6/6
This catalog provides information as of December, 1999. Specifications and information herein are
subject to change without notice.
Specifications of any and all SANYO products described or contained herein stipulate the performance,
characteristics, and functions of the described products in the independent state, and are not guarantees
of the performance, characteristics, and functions of the described products as mounted in the customer’s
products or equipment. To verify symptoms and states that cannot be evaluated in an independent device,
the customer should always evaluate and test devices mounted in the customer’s products or equipment.
SANYO Electric Co., Ltd. strives to supply high-quality high-reliability products. However, any and all
semiconductor products fail with some probability. It is possible that these probabilistic failures could
give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire,
or that could cause damage to other property. When designing equipment, adopt safety measures so
that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective
circuits and error prevention circuits for safe design, redundant design, and structural design.
In the event that any or all SANYO products (including technical data, services) described or contained
herein are controlled under any of applicable local export control laws and regulations, such products must
not be exported without obtaining the export license from the authorities concerned in accordance with the
above law.
No part of this publication may be reproduced or transmitted in any form or by any means, electronic or
mechanical, including photocopying and recording, or any information storage or retrieval system,
or otherwise, without the prior written permission of SANYO Electric Co., Ltd.
Any and all information described or contained herein are subject to change without notice due to
product/technology improvement, etc. When designing equipment, refer to the “Delivery Specification”
for the SANYO product that you intend to use.
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.
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