LA7615 查看數據表（PDF） - SANYO -> Panasonic
零件编号
产品描述 (功能)
生产厂家
LA7615 Datasheet PDF : 39 Pages
| |||
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
Unit
9.6
V
9.6
V
9.6
V
9.6
V
30
mA
1.5
W
–10 to +65
°C
–55 to +150
°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
Unit
7.6
V
7.6
V
7.6
V
7.6
V
24
mA
7.3 to 7.9
V
7.3 to 7.9
V
7.3 to 7.9
V
7.3 to 7.9
V
20 to 30
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
Share Link: 