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LA7615 PDF даташит

Спецификация LA7615 изготовлена ​​​​«Sanyo» и имеет функцию, называемую «Single-Chip NTSC Color TV IC».

Детали детали

Номер произв LA7615
Описание Single-Chip NTSC Color TV IC
Производители Sanyo
логотип Sanyo логотип 

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LA7615 Даташит, Описание, Даташиты
Ordering number : ENN5841
Monolithic Linear IC
LA7615
Single-Chip NTSC Color TV IC
Overview
The LA7615 is an NTSC color TV IC that supports
computer control over an I2C bus. In addition to improved
quality and increased functionality in color TV products,
this IC supports the development of a TV set product line
in software and the simplification of end product design.
The provision of an I2C bus means that this product can
also respond to desires for increased total manufacturing
productivity, including improved automation of computer
controlled production lines.
Functions
• I2C bus control, VIF, SIF, Y, C, and deflection circuits
integrated on a single chip.
Features
• Pursuit of higher integration levels
The LA7615 integrates VIF, SIF, luminance,
chrominance, and deflection (horizontal and vertical
synchronization) circuits, A/V switching, and power
supply control on a single chip.
• Bus control for reduced external component counts and
mechanical adjustment points
All the LA7615 signal-processing circuits can be
controlled and adjusted digitally over the I2C bus. All
adjustments, both those required during manufacture and
the user controls, can be controlled over the I2C bus, and
both function selection and characteristics settings can
be performed in software over the I2C bus. This
increases flexibility in designing a product line of TV
sets and also enhances productivity by allowing mixed
production runs.
While this device supports multifunction and good
performance, it is also economical in that it achieves
reduced power and reduced pin count.
Package Dimensions
unit: mm
3071-DIP64S
[LA7615]
64
1
57.2
0.95 0.48
33
32
1.78 1.01
SANYO: DIP64S
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.
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
91799RM (OT) No. 5841-1/39









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LA7615 Даташит, Описание, Даташиты
LA7615
Specifications
Maximum Ratings at Ta = 25°C
Parameter
Maximum supply voltage
Maximum supply current
Allowable power dissipation
Operating temperature
Storage temperature
Symbol
V2 max
V17 max
V32 max
V60 max
I24 max
Pd max
Topr
Tstg
Ta 65°C
Conditions
Ratings
9.6
9.6
9.6
9.6
30
1.5
–10 to +65
–55 to +150
Unit
V
V
V
V
mA
W
°C
°C
Operating Conditions at Ta = 25°C
Parameter
Recommended supply voltage
Recommended supply current
Operating supply voltage range
Operating supply current range
Symbol
V2
V17
V32
V60
I24
V2 op
V17 op
V32 op
V60 op
I24 op
Conditions
Ratings
7.6
7.6
7.6
7.6
24
7.3 to 7.9
7.3 to 7.9
7.3 to 7.9
7.3 to 7.9
20 to 30
Unit
V
V
V
V
mA
V
V
V
V
mA
Functional Description
<VIF/SIF Functions>
In addition to a PLL synchronous detection system, the IF block also adopts a split system in which the VIF signal and
the SIF signal are processed separately.
• Low-level VCO
The LA7615 achieves a significant reduction in beat generation due to interference by lowering the VCO oscillator
level from that used in earlier ICs.
• Adjustment-free VCO coil implemented using bus control
By compensating for manufacturing variations in the VCO coil using bus control, the LA7615 eliminates coil
adjustment from the manufacturing line.
• Built-in 4.5 MHz trap
The LA7615 incorporates an on-chip trap that also provides a video equalizer function. Thus the number of external
trap, inductor, and capacitor components is reduced.
• Built-in SIF FM detector: 4.5 MHz quadrature detection
• The video signal and FM demodulated signal levels can be controlled from the serial bus.
The improved precision associated with controlling the output level over the serial bus makes it easier to design the
interface with the following stage.
• Built-in buzz canceler
Allows high performance to be maintained even during stereo reception.
• Built-in video switch (INT/EXT(AUX) switching circuit)
Built-in AUX input switching circuit means that the dedicated switching ICs required can be reduced. Also, the ability to
control this switch from the serial bus makes it easier to design the peripheral wiring pattern.
• Dedicated IF video signal output pin
The provision of this pin makes it easier to design end products that support PIP and similar features.
<Luminance and Chrominance Circuits>
These blocks have been designed to minimize the use of external components as much as possible. The filter circuits are
now integrated on the same chip, and not only the adjustment circuits, but also the function selection and characteristics
modifications functions can be controlled over the serial bus. As a result, basically all the signal processing from input to
output can be performed with only the addition of the chrominance circuit VCO crystal and the APC filter circuit.
No. 5841-2/39









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LA7615 Даташит, Описание, Даташиты
LA7615
Furthermore, this IC also supports high image quality systems and responds to needs from a diverse range of end
products.
• Two independent inputs for the luminance and chrominance signals and switching between the Y1/C1 and Y2/C2 inputs
• Video muting on/off switch
• Built-in filters (The filter f0 adjustment function can be used to select the filter characteristics.)
Chrominance system: Bandpass filter (symmetric and asymmetric types)
Luminance system: Color trap and delay line
<f0 Mode Selection>
Mode f0 =
0
1
2
3
Trap f0
3.58 MHz
4.2 MHz
5.0 MHz
10.0 MHz
Y signal
*Total delay
500 ns
510 ns
520 ns
265 ns
Chroma signal
BPF
*Total 500 ns delay
Asymmetric (peaking type)
515 ns
Symmetric
535 ns
Bypass
265 ns
*: Reference values
<Luminance System Circuit>
• Built-in high image quality variable-type luminance system filter (color trap and delay line)
Luminance filter mode selection (f0 adjustment)
Four modes are provided: 3.58 MHz trap, 4.2 MHz trap, 5.0 MHz wide, and 10.0 MHz high band.
• Peaking (sharpness) control
Aperture type control implemented using the delay line
The emphasis frequency is automatically selected according to the f0 mode using the delay line.
One of the four frequencies 2.2, 2.6, 3.0, or 4.9 MHz is emphasized according to which of the f0 modes (3.58 MHz
trap, 4.2 MHz trap, 5.0 MHz wide, or 10.0 MHz high band) is used.
• Adaptive coring
For low-level signals, the above peaking is suppressed to reduce the image contamination due to that peaking.
The coring level is automatically adjusted according to the amplitude of the input signal.
• Black stretch circuit: Can be turned on or off under control of the serial bus interface.
• SYO (Selected luminance (Y) output)
One of the Y1/Y2 inputs is selected, and that input signal is output as the sync separator circuit signal directly.
However, the DC level of that signal is clamped at 1/2 VCC.
Also, this signal can be used for closed captions or as a velocity modulation.
• Support for analog/digital OSD
Amplitude level limiting is applied to digital input signals internally to the IC.
• Contrast and brightness controls
• ABL (automatic beam limiter)
Three-pin system (IB IN, BRT ABL FILT, and CONTRAST ABL FILT pins), mode switching under control of serial
bus data.
• R, G, and B output drive and bias adjustments
• Sub-bias (brightness) control
The DC level of each of the R, G, and B signals can be adjusted over a 4-step (2-bit) range.
<Chrominance Circuit>
• Built-in chrominance bandpass filter
Chrominance system filter mode selection: bandpass filter peaking/symmetric type selection and chrominance
bandpass filter bypass on/off setting
• Auto Flesh: Flesh tone correction (on/off)
• Overload (on/off)
Limits the saturation of the color when the ratio of the burst and color signals is large, i.e. when the color is highly
saturated.
• Color phase and saturation controls
• Demodulation angle: 104°
No. 5841-3/39










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