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LA72912V 데이터시트 PDF




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기능 FM Modulator and Demodulator IC
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LA72912V 데이터시트, 핀배열, 회로
Ordering number : ENA1409
LA72912V
Monolithic Linear IC
FM Modulator and
Demodulator IC
http://onsemi.com
Overview
The LA72912V is a FM modulation and demodulation single-chip IC. Its adjustment free modulation/demodulation
circuit significantly reduces the number of peripheral circuits required and can contribute to lower production costs.
Functions
ASK modulation and demodulation
Video signal FM modulation and demodulation
Video signal emphasis and de-emphasis function
Drop-Out detecting function of Video FM signal
FM mute function at Second-Call
Specifications
Maximum Ratings at Ta = 25°C
Parameter
Maximum supply voltage
Allowable power dissipation
Symbol
VCC max
Pd max
Operating temperature
Topr
Ta 70°C *
Storage temperature
Tstg
* Mounted on a 114.3mm × 76.1mm × 1.6mm, glass epoxy board.
Conditions
Ratings
7.0
300
-30 to +70
-40 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 supply voltage
Allowable operating voltage range
Symbol
VCC
VCC op
Conditions
Ta = -30 to +70°C
Ratings
5.0
4.7 to 5.5
Unit
V
V
Semiconductor Components Industries, LLC, 2013
July, 2013
21809 MS 20090128-S00005 No.A1409-1/12




LA72912V pdf, 반도체, 판매, 대치품
ASK Block T17=0.4V
LA72912V
Parameter
Current dissipation at
standby
Current dissipation at
standby at
MOD-AGC-OFF
Current dissipation at
standby at
DEMOD-AGC-OFF
Standby release time(1)
(FM stoprelease)
Standby release time(2)
(Video signal stop
release)
ASK Transmitting time
“transmission”
ASK Transmitting time
“Receive”
ASK transmission
setup time
ASK minimum detect
level
ASK start up time
ASK demodulation
duty ratio
Symbol
ICCS
ICCSb
ICCSc
SASK1
SASK2
TASK1
TASK2
WASK
VASK
OASK
DASK
In OUT
Conditions
T17 At standby mode, measures include current to
pin2,9. T17 = 0.4V, T15 and T20:open
T17 At standby mode, measures include current to
T15 pin2,9. T17 = 0.4V, T15 = 5V, T20:open
T17
T15
T20
T6 T3
T17
T6 T3
T5A
T17
T10A T12
T11
T16A T13
T10A T12
T11
T16A T13
T16A T13
T16A T13
At standby mode, measures include current to
pin2,9. T17 = 0.4V, T15 = 5V, T20 = 5V
T6 = 2.0VDC T17 = 0V2V (Standby release)
Time until FM carrier is output to T3.
T6 = 0.4V, T5 = DEV = 2.0MHz 100% white video
signal of FM signal. T17 = 0V 2V (Standby
release)
Time until white 100% signal is output to T3
T10A = 1MHz,0/2V Pulse T11 = 20KHz,
0/2VPulse. Measure T12 signal appear time
T16 = 1MHz, 300mVp-p-SIN wave
Measure time T13 appear detected T16 signal
T10A = 1MHz, 0-2V-pulse T11 = 20KHz,0-2V-pulse
Measure T11 input interval time when T10A input
Measure T16 minimum level at T13 is normally
condition
Measure time ASK working from Power-ON
T16 = T12 output signal (0-2Vp-p)
Measure ASK Duty difference with 50%
DASK = (pulse width μs / 50μs) - 50% × 100%
min
10.8
12.8
16.8
0.0
2.0
0.2
-
-15
Ratings
typ
13.0
16.0
21.0
6.0
7.0
10
30
-2
max
15.5
Unit
mA
19.2 mA
25.2 mA
12.0 μs
12.0 μs
0.1 ms
0.1 ms
100 ms
3 Vp-p
300 ms
11 %
No.A1409-4/12

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LA72912V 전자부품, 판매, 대치품
LA72912V
Pin Function
Pin No.
Pin name
1 Emphasis filter
2 VCC5V
3 FM/Video Output
4 4V Regulator
5 FM/VD input
6 MOD/DEMOD Control
7 TC1(MOD)/
FMAGC monitor
Out control
8 TC2(DEMOD)/
FMAGC monitor
Output
9 ASK-VCC5V
10 ASK CAR IN
11 ASK DATA IN
12 ASK TX Output
13 ASK RX Output
14 ASK DET filter
15 ASK AGC filter
/AGC OFF
16 ASK RX input
17 Standby control
18 DOC-OUT
/2nd-Call input
19 B-GND
20 FM AGC filter
21 De-emphasis filter
22 A-GND
23 De-emphasis output
/V-2V select
24 Video input
FM MOD mode(Outside camera)
Emphasis filter connection pin
VCC for FM modulation.
FM Output
(RO=200Ω:1.8Vp-p)
FM modulate block and ASK bock
supply reference voltage.
VD Input.
(Hi: over 2V, Low: under 0.4V)
(VD DET: High)
Set over 2V DC voltage.
Set capacitor for TC1
Set capacitor for TC2
VCC for ASK
ASK carrier Input.
(Recommend below 3Vp-p)
ASK Data Input.
(Hi: more than 2V, Lo: below 0.4V)
ASK modulated signal Output
ASK Demodulated Output
ASK Detector filter
AGC filter for ASK. (When AGC
operate voltage is 0V to 3V, AGC stop
when you add over 4.5V.)
ASK Demodulate Input
FM blocks standby control. (FM block
operate: over 2V, FM block standby:
under 0.4V )
2ND-Call input, 2ND-Call: Low (High:
over 2V, Low: under 0.4V)
Circuit GND
Emphasis monitor output
Non connect(Hi-Z)
Circuit GND
DFF for V-diff control
(ON: over 2V, OFF: under 0.4V)
Video signal input.
(from outside CCD camera: 1Vp-p).
FM DEMOD mode(Inside Monitor)
Non connect(Hi-Z)
VCC for FM demodulation.
Video Output
(RO=1kΩ: 2Vp-p)
FM demodulate block and ASK bock
supply reference voltage.
FM Input.
(Recommend Level: 100 to 620mVp-p)
Note
If you no need, this pin is open.
Push-pull output
DEMOD mode: Set
3.3V by internal bias. (34kΩ/66kΩ)
Set under 0.4V DC voltage.
FMAGC monitor out control
GND: Monitor ON / VCC: Monitor OFF
Outside camera /
Inside monitor setting.
Can do second inside monitor
addition
FMAGC monitor output
Can do second inside monitor
addition
2.1V by internal bias. (50kΩ)
Push-pull output
Open collector output
ASK carrier detect = Lo
3.3V by internal bias. (34kΩ/66kΩ)
DOC output
(When DO-DET, output is Low)
FM AGC control filter (AGC-ON:0 to
3V DC, AGC-OFF:4.5V to 5V by
external DC voltage.)
De-emphasis filter connection pin.
DE-emphasis output
Video signal input.
(from de-emphasis block: 0.5Vp-p).
DEMOD mode:
Open collector output.
MOD mode: Don’t connect
capacitor.
If you don’t need, this pin is open.
MOD mode;
VD diff. Count select
0V : VD through
2V : VD 1/2 diff
MOD mode: Maximum video input
level is 1.5Vp-p.
No.A1409-7/12

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