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LA72730 데이터시트 PDF




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기능 Monolithic Linear IC
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LA72730 데이터시트, 핀배열, 회로
Ordering number : ENA1059A
LA72730
Monolithic Linear IC
Audio/Video Switch for TV
http://onsemi.com
Overview
The LA72730 is an Audio/Video Switch for TV.
Functions
Audio : Possible to Change 4 Channel×2, ALC OUTPUT, 4dB Amplifier MONITOR OUTPUT
Video : Possible to Change 4 Channel, 6dB Amplifier
Control : I2C (Slave address : 92h)
Specifications
Maximum Ratings at Ta = 25°C
Parameter
Maximum supply voltage
Allowable power dissipation
Operating temperature
Storage temperature
Symbol
VCC max
Pd max
Topr
Tstg
Pin 8
Ta 70°C
Conditions
Ratings
7.0
300
-20 to +70
-55 to +150
Unit
V
mW
°C
°C
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating
Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability.
Recommended Operating Conditions at Ta = 25°C
Parameter
Recommended operating voltage
Operating voltage range
Symbol
VCC
VCC op
Pin 8
Pin 8
Conditions
Ratings
5.0
4.5 to 5.5
Unit
V
V
Semiconductor Components Industries, LLC, 2013
July, 2013
21010 SY / 52108 MS PC 20080514-S00004 No.A1059-1/8




LA72730 pdf, 반도체, 판매, 대치품
LA72730
I2C Bit Pattarn
D8 D7 D6 D5 D4 D3 D2 D1
* 00
01
10
11
*0
1
00
01
* 10
11
*0
1
0
*1
*0
1
“*” : Shows initial condition.
Slave address : 92h (1001 0010)
Condition
AV IN-TV
AV IN-1
AV IN-2
AV IN-3
Norma
Mute
ALC Level-1 (-9dBV)
ALC Level-2 (-14dBV)
ALC Level-3 (-12dBV)
ALC Level-4 (-18dBV)
ALC-ON
ALC-OFF
Prohibit
Fix
Fix
Prohibit
LINE-OUT
10
5
0
5 ALC-OFF
ALC-1
10 ALC-3
ALC-2
15
ALC-4
20
25
30
30
25 20 15 10
INPUT – dBV
5
0
MONITOR
15
10
5
0
5
10 MONITOR
15
20
25
30
30 25 20 15 10
INPUT – dBV
5
0
No.A1059-4/8

4페이지










LA72730 전자부품, 판매, 대치품
Continued from preceding page.
Pin No.
Pin Name
18 POVIDEO
Video output
Function
LA72730
DC : voltage
AC : level
DC : 1.4V
Equivalent Circuit
19 POALCR
20 POALCL
Audio output
22 PCREG
Reference voltage
DC : 2.4V
DC : 2.4V
200Ω
10kΩ
10kΩ
9.6kΩ
1kΩ
500Ω
I2C BUS serial interface specification
(1) Data Transfer Manual
This IC adopts control method (I2C-BUS) with serial data, and controlled by two terminals which called SCL (serial
clock) and SDA (serial data).At first, set up *1 the condition of starting data transfer, and after that, input 8 bit data to
SDA terminal with synchronized SCL terminal clock. The order of transferring is first, MSB (the Most Scale of Bit),
and save the order. The 9th bit takes ACK (Acknowledge) period, during SCL terminal takes “H”, this IC pull down the
SDA terminal. After transferred the necessary data, two terminals lead to set up and of *2 data transfer stop condition,
thus the transfer comes to close.
*1 Defined by SDA fall down SCL during ‘H’ period.
*2 Defined by SDA rise up SCL during ‘H’ period.
(2) Transfer Data Format
After transfer start condition, transfers slave address (92h : 1001 0010 ) to SDA terminal, control data, then, stop
condition (See figure 1).
Slave address is made up of 7bits, *3 8th bit shows the direction of transferring data, but this IC does not have READ
mode, so that this bit fix to “L”.
Data works with all of bit, transfer the stop condition before stop 8bit transfer, and to stop transfer, it will be canceled
the transfer dates.
*3 It is called R/W bit.
Fig.1 DATA STRUCTURE
START Condition
Slave Address
R/W
L
ACK
Control data
ACK
STOP condition
(3) Initialize
This IC is initialized for circuit protection. Initial condition is shown on bitmap.
No.A1059-7/8

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