LA72912V
FM Modulator and
Demodulator IC
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.
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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
SSOP24
CASE 565AQ
MAXIMUM RATINGS (TA = 25°C)
Parameter
Symbol
Maximum Supply Voltage
Allowable Power
Dissipation
MARKING DIAGRAM
Ratings
Unit
VCC max
7.0
V
Pd max
300
mW
−30 to +70
°C
−40 to +150
°C
Operating Temperature
Topr
Storage Temperature
Tstg
Conditions
TA ≤ 70_C
(Note 1)
Stresses exceeding those listed in the Maximum Ratings table may damage the
device. If any of these limits are exceeded, device functionality should not be
assumed, damage may occur and reliability may be affected.
1. Mounted on a 114.3 mm × 76.1 mm × 1.6 mm, glass epoxy board.
Recommended
Supply Voltage
Allowable Operating
Voltage Range
Symbol
Conditions
VCC
VCC op
TA = −30 to +70°C
Ratings
Unit
Device
Package
Shipping†
5.0
V
LA72912V−TLM−H
SSOP24
(Pb−Free/
Halogen Free)
1,000 /
Tape & Reel
4.7 to 5.5
V
Functional operation above the stresses listed in the Recommended Operating
Ranges is not implied. Extended exposure to stresses beyond the
Recommended Operating Ranges limits may affect device reliability.
© Semiconductor Components Industries, LLC, 2013
August, 2018 − Rev. 1
XXXXX = Specific Device Code
Y = Year
M = Month
DDD = Additional Traceability Data
ORDERING INFORMATION
RECOMMENDED OPERATING CONDITIONS (TA = 25°C)
Parameter
XXXXXXXXXX
YMDDD
1
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specification
Brochure, BRD8011/D.
Publication Order Number:
LA72912V/D
LA72912V
ELECTRICAL CHARACTERISTICS (TA = 25°C, VCC = 5.0 V)
Parameter
Symbol
In
Out
Conditions
Min
Typ
Max
Unit
0
0.4
V
DC CHARACTERISTICS (T6 = 0.4 V, T17 = 2.0 V, T18 = 0.4 V)
Control Terminal
(Pin 6,9) Low Level
CNT6L
CNT17L
T6
T17
Low level of control terminal of
ALL mode.
T6 = 0.4 V (DEMOD mode),
T17 = 0.4 V (Standby mode)
Control Terminal
(Pin 6,9) High Level
CNT6H
CNT17H
T6
T17
High level of input terminal of
ALL mode
T6 = 2.0 V (MOD mode),
T17 = 2.0 V (Normal mode)
2.0
5.0
V
Input5 Low Level
IN5L
T5
Low level of input terminal of
MOD mode
T6 = 2.0 V, T17 = 2.0 V,
T18 = 0.4 V
0
0.4
V
Input5 High Level
IN5H
T5
High level of input terminal of
MOD mode
T6 = 2.0 V, T17 = 2.0 V,
T18 = 0.4 V
2.0
5.0
V
Input18 Low Level
IN18L
T18
Low level of input terminal of
MOD mode
T5 = 0.4 V, T6 = 2.0 V,
T17 = 2.0 V
0
0.4
V
Input18 High Level
IN18H
T18
High level of input terminal of
MOD mode
T5 = 0.4 V, T6 = 2.0 V,
T17 = 2.0 V
2.0
5.0
V
Output18 Terminal
High Level
OPH18
T18
DEMOD mode: FM−Signal input
T6 = 0.4 V, T17 = 2.0 V,
Pull-up: 15 kW
4.7
Output18 Terminal
Low Level
OPL13
OPL18
T18
T18: DEMOD mode:
FM No-signal Measure the sink
level of output terminal.
T6 = 0.4 V, T17 = 2.0 V,
Pull−up: 15 kW
0
Input20 Low Level
IN20L
T20
T20
Voltage of terminal at AGC ON
T6 = 0.4 V, T17 = 2.0 V
Input20 High Level
IN20H
T20
T20
Voltage of terminal at AGC OFF
T6 = 0.4 V, T17 = 2.0 V
5pin AC Input
Dynamic Range
ACIN5
T5A
T3
Input amplitude level of FM signal
Freq: 11.5 MHz to 13.5 MHz
16pin AC Input
Dynamic Range
ACIN16
T24A
T3
Maximum input level of T24A at
Video signal
V
0.25
0.4
V
0
3
V
4.5
5.0
V
1000
mVp−p
1.5
Vp−p
27.0
32.0
mA
1.8
2.2
Vp−p
VIDEO FM MODULATION BLOCK (MOD) (T6 = 2.0 V, T17 = 2.0 V, T18 = 0.4 V)
Current Dissipation
ICCR
FM Modulator
Output Level
VFM1
T3
Measure the output level on T3
(No signal input)
It is load impedance 200 W
between T3−GND.
FM Mute Output Level
VFM2
T3
Measure the T3 output level with
2nd call
0
10
20
mVp−p
Carrier Frequency
FFM
T3
Measure the output frequency on
T3 with no signal input
10.9
11.5
12.1
MHz
FM Output Second
Harmonic Distortion
THD2
T3
Measure the second harmonics
distortion with the above condition
−30
−20
dB
Measure the currents into pins 2
(MOD mode)
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2
22.0
LA72912V
ELECTRICAL CHARACTERISTICS (TA = 25°C, VCC = 5.0 V) (continued)
Parameter
Symbol
In
Out
Conditions
Min
Typ
Max
Unit
VIDEO FM MODULATION BLOCK (MOD) (T6 = 2.0 V, T17 = 2.0 V, T18 = 0.4 V)
Deviation
DEV
T24A
T3
With T24A 100% White 1Vp−p
signal,
Measure the deviation on T3
1.9
2.0
2.1
MHz
FM Modulator Linearity
(11.5 to 13.5 MHz)
LMOD
T24A
T3
Let f2.85, f3.35 and f3.85 be the
output frequency when 2.85 V,
3.35 V and 3.85 V is applied to
T24A
LMOD = {[f3.35 −(f3.85 + f2.85) /
2] / (f3.85 − f2.85)] × 100}
−2
0
+2
%
Emphasis Gain
GEMP
T24A
T20
With VIN a 300 mVp−p 10 kHz
sine wave, Measure the ratio of
the levels on T24A and T20
−7.5
−6.0
−4.5
dB
Main Linear Emphasis
Characteristics(1)
GME1
T24A
T20
With VIN a 300 mVp−p 500 kHz
sine wave, Measure the ratio of
the levels on T24A and T20
0.0
1.5
3.0
dB
Main Linear Emphasis
Characteristics(2)
GME2
T24A
T20
With VIN a 300 mVp−p 2 MHz
sine wave, Measure the ratio of
the levels on T24A and T20
4.0
5.5
7.0
dB
White Clipping Level
LWC
T24A
T20
With VIN a 1.5 Vp−p 100% white
video signal. Measure the white
clipping level on T20
180
200
220
%
Dark Clipping Level
LDC
T24A
T20
With VIN a 1.5 Vp−p 100% white
video signal. Measure the dark
clipping level on T20.
−60
−50
−40
%
FM Stop Beginning
Delay Time
(VD Characteristic 1B)
TC1
T5
T3
C7 = 0.01 mF, Time from fall of T5
signal to doing of FM carrier of T3
STOP
240
300
360
ms
FM Stop Time
(VD Characteristic 2A)
TC2
T5
T3
C8 = 0.001 mF, Stop time of FM
carrier of T3
30
40
50
ms
Minimum VD Pulse
Width
VDT
T5
T3
C7 = 0.01 mF, Minimum VD pulse
width to which TC1B is normally
output
63
ms
VIDEO FM DE-MODULATION BLOCK (DEMOD) (T6 = 0.4 V, T17 = 2.0 V)
Current Dissipation
ICCP
Video Output Level
VOUT
T5A
VOUTB
Video Output Level B
FM Stop Detection
Level
(DOC Characteristic 1)
(Drop Delay Down)
Measure the currents into pin 2
(DEMOD mode)
26.0
32.0
38.0
mA
T3
Demodulation level, when the FM
signal of 2.2 MHz deviation. Load
impedance = 1 kW T3−GND.
2.09
2.2
2.31
Vp−p
T5A
T3
Demodulation level, when the FM
signal of 2.0 MHz deviation. Load
impedance = 1 kW T3−GND.
(In this case only, VCC make 4.5 V
to 5.5 V.)
1.9
2.0
2.1
Vp−p
DOC1
T5A
T20
T18
T20
T5 = 11.5 MHz, 300 mVp−p.
Measure T20 voltage (V20). Set
T20 V20 (AGC−Fix). T5 input
level when T5 amplitude is decrease gradually, and T18
becomes “Low”
40
60
mVp−p
DDD
T5A
T20
T18
T20
Shift time from T5 = 300 mVp−p
→ 0 mVp−p to T18 “Low”
1.5
2.5
ms
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3
0.5
LA72912V
ELECTRICAL CHARACTERISTICS (TA = 25°C, VCC = 5.0 V) (continued)
Parameter
Symbol
In
Out
Conditions
Min
Typ
Max
Unit
60
90
mVp−p
VIDEO FM DE-MODULATION BLOCK (DEMOD) (T6 = 0.4 V, T17 = 2.0 V)
FM Return Judgment
Level
DOC2
T5A
T20
T18
T20
T5 = 11.5 MHz, 300 mVp−p,
Measure T20 Voltage (V20). Set
T20 V20 (AGC−Fix). T5 inputs the
level when T5 amplitude is
increase gradually, and T18
becomes “High”
Video DC Level when
Returning
DOC2B
T5A
T20
T23
Confirmation of output of Video
signal from T3.
Measurement of DC level.
0.5
1.0
1.5
V
(Drop Delay Rise)
Return Operation
Delay Time
DWR
T5A
T20
T18
T20
Shift time from T5 = 0 mVp−p →
3 00 mVp−p to T18 “High”
0.2
1.5
2.5
ms
4 V Regulator
VREG
T4
Measurement of T4 DC level
3.9
4.0
4.3
V
Range of Input
Dynamic Range
ACIN5
T5A
T3
DEV = 2.0 MHz. Input amplitude
level of FM signal.
(T5A: 11.5 MHz to 13.5 MHz)
500
1000
mVp−p
DG
DG
T5A
T3
0
6
10
%
DP
DP
T5A
T3
0
6
10
deg
0
10
20
IRE
Output voltage at Mute
MUV
T3
Mute level measurement of T3
FM Demodulation
Voltage (11.0M)
VDEM11
VDEM12
VDEM13
T5A
T23
T5A = 11.0 MHz, 100 mVp−p,
200 mVp−p and 400 mVp−p.
Each T23 voltage measurement
0.3
0.8
1.3
V
FM Demodulation
Voltage (12.5M)
VDEM21
VDEM22
VDEM23
T5A
T23
T5A = 12.5 MHz, 100 mVp−p,
200 mVp−p and 400 mVp−p.
Each T23 voltage measurement
0.7
1.2
1.7
V
FM Demodulation
Voltage (14.0M)
VDEM31
VDEM32
VDEM33
T5A
T23
T5A = 14 MHz, 100 mVp−p,
200 mVp−p and 400 mVp−p.
Each T23 voltage measurement
1.1
1.6
2.1
V
FM Demodulation
Linearity1,2,3
LDEM1
LDEM2
LDEM3
Calculate FM demodulation
linearity
LDEM1 = {[VDEM21 −
(VDEM11 + VDEM31) / 2]
/ (VDEM31 − VDEM11)}×100
LDEM2 = {[VDEM22 −
(VDEM12 + VDEM32) /2 ]
/ (VDEM32 − VDEM12)}×100
LDEM3 = {[VDEM23 −
(VDEM13 + VDEM33) / 2]
/ (VDEM33 − VDEM13)}×100
−2
0
+2
%
FM Demodulation
Sensitivity1,2,3
SDEM1
SDEM2
SDEM3
Calculate FM recovery Sensitivity
with consider pin 3 output level
conversion ratio.
SDEM1 = (VDEM31−VDEM11) /
3.0
SDEM2 = (VDEM32−VDEM12) /
3.0
SDEM3 = (VDEM33−VDEM13) /
3.0
0.28
0.33
0.38
V/MHz
Main Linear
De-emphasis
Amplitude
GMED
T5 = 200 mVp−p FM signal
(fm = 10 kHz, Center Carrier =
12.5 MHz, DEV = 2.0 MHz)
Signal level of T23
481
535
589
mVp−p
T5A
T23
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LA72912V
ELECTRICAL CHARACTERISTICS (TA = 25°C, VCC = 5.0 V) (continued)
Parameter
Symbol
In
Out
Conditions
Min
Typ
Max
Unit
VIDEO FM DE-MODULATION BLOCK (DEMOD) (T6 = 0.4 V, T17 = 2.0 V)
Main Linear
De-emphasis
Characteristics(1)
GMED1
T5A
T23
T5 = 200 mVp−p FM signal
(fm = 500 kHz, Center Carrier =
12.5 MHz, DEV = 2.0 MHz).
Signal level of T23 versus GMRD
(Ratio of GMED).
−3.5
−1.5
+0.5
dB
Main Linear
De-emphasis
Characteristics(2)
GMED2
T5A
T23
T5 = 200 mVp−p FM signal
(fm = 2 MHz, Center Carrier =
9.25 MHz, DEV = 2.0 MHz).
Signal level of T23 versus GMRD
(Ratio of GMED)
−6.5
−4.5
−2.5
dB
ASK BLOCK (T17 = 0.4 V)
Current Dissipation at
Standby
ICCS
T17
At standby mode, measures
include current to pin2,9.
T17 = 0.4 V, T15 and T20: open
10.8
13.0
15.5
mA
Current Dissipation at
Standby at
MOD−AGC−OFF
ICCSb
T17
T15
At standby mode, measures include current to pin 2,9.
T17 = 0.4 V, T15 = 5 V,
T20: open
12.8
16.0
19.2
mA
Current Dissipation at
Standby at
DEMOD−AGC−OFF
ICCSc
T17
T15
T20
At standby mode, measures
include current to pin 2,9.
T17 = 0.4 V, T15 = 5 V, T20 = 5 V
16.8
21.0
25.2
mA
Standby Release
Time(1)
(FM stop → release)
SASK1
T6
T17
T3
T6 = 2.0 VDC T17 = 0 V → 2 V
(Standby release) Time until FM
carrier is output to T3
0.0
6.0
12.0
ms
Standby Release
Time(2)
(Video signal stop
→ release)
SASK2
T6
T5A
T17
T3
T6 = 0.4 V, T5 = DEV = 2.0 MHz
100% white video signal of FM
signal. T17 = 0 V → 2 V (Standby
release)
Time until white 100% signal is
output to T3
2.0
7.0
12.0
ms
ASK Transmitting
Time “transmission”
TASK1
T10A
T11
T12
T10A = 1 MHz, 0/2 V Pulse
T11 = 20 kHz,
0/2 V Pulse. Measure T12 signal
appear time
0.1
ms
ASK Transmitting
Time “Receive”
TASK2
T16A
T13
T16 = 1 MHz, 300 mVp−p−SIN
wave
Measure time T13 appear
detected T16 signal
0.1
ms
ASK Transmission
Setup Time
WASK
T10A
T11
T12
T10A = 1 MHz, 0−2V−pulse
T11 = 20 kHz, 0−2V−pulse
Measure T11 input interval time
when T10A input
100
ms
ASK Minimum
Detect Level
VASK
T16A
T13
Measure T16 minimum level at
T13 is normally condition
3
Vp−p
ASK Start Up Time
OASK
T16A
T13
Measure time ASK working from
Power−ON
ASK Demodulation
Duty Ratio
DASK
T16A
T13
T16 = T12 output signal
(0−2Vp−p) Measure ASK Duty
difference with 50%
DASK = (pulse width ms / 50 ms) −
50% × 100%
10
0.2
−
30
300
ms
−15
−2
11
%
Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product
performance may not be indicated by the Electrical Characteristics if operated under different conditions.
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5
LA72912V
PIN ASSIGNMENT
Figure 1. Pin Assignment
BLOCK DIAGRAM AND APPLICATION CIRCUIT EXANPLE1 MODULATION (OUTSIDE CAMERA)
Figure 2. Block Diagram and Application Circuit Exanple1 Modulation (Outside Camera)
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6
LA72912V
APPLICATION CIRCUIT EXANPLE2 DEMODULATION (INSIDE MONITOR)
Figure 3. Application Circuit Exanple2 Demodulation (Inside Monitor)
PIN FUNCTION
Pin No.
Pin Name
FM MOD Mode
(Outside Camera)
FM DEMOD Mode
(Inside Monitor)
Note
1
Emphasis Filter
Emphasis filter connection pin
Non connect (Hi−Z)
2
VCC5V
VCC for FM modulation
VCC for FM demodulation
3
FM/Video Output
FM Output
(RO = 200 W: 1.8 Vp−p)
Video Output
(RO = 1 kW: 2 Vp−p)
4
4 V Regulator
FM modulate block and ASK
bock supply reference voltage.
FM demodulate block and ASK
bock supply reference voltage.
5
FM/VD Input
VD Input.
(Hi: over 2 V, Low: under 0.4 V)
(VD DET: High)
FM Input.
(Recommend Level:
100 to 620 mVp−p)
DEMOD mode: Set
3.3 V by internal bias.
(34 kW/66 kW)
6
MOD/DEMOD
Control
Set over 2 V DC voltage.
Set under 0.4 V DC voltage.
Outside camera/Inside monitor
setting.
7
TC1(MOD)/
FMAGC Monitor
Out Control
Set capacitor for TC1
FMAGC monitor out control
GND: Monitor ON/VCC: Monitor
OFF
Can do second inside monitor
addition
8
TC2(DEMOD)/
FMAGC Monitor
Output
Set capacitor for TC2
FMAGC monitor output
Can do second inside monitor
addition
9
ASK−VCC5V
VCC for ASK
←
10
ASK CAR IN
ASK carrier Input.
(Recommend below 3 Vp−p)
←
11
ASK DATA IN
ASK Data Input.
(Hi: more than 2 V,
Lo: below 0.4 V)
←
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7
If you no need, this pin is open
Push-pull output
2.1 V by internal bias. (50 kW)
LA72912V
PIN FUNCTION (continued)
Pin No.
Pin Name
FM MOD Mode
(Outside Camera)
FM DEMOD Mode
(Inside Monitor)
Note
12
ASK TX Output
ASK modulated signal Output
←
Push-pull output
13
ASK RX Output
ASK Demodulated Output
←
Open collector output
ASK carrier detect = Lo
14
ASK DET Filter
ASK Detector filter
←
15
ASK AGC Filter/
AGC OFF
AGC filter for ASK. (When AGC
operate voltage is 0 V to 3 V,
AGC stop when you add over
4.5 V.)
←
16
ASK RX Input
ASK Demodulate Input
←
17
Standby Control
FM blocks standby control. (FM ←
block operate: over 2 V, FM block
standby: under 0.4 V )
18
DOC−OUT/
2nd-Call Input
2ND−Call input, 2ND−Call: Low
(High: over 2 V,
Low: under 0.4 V)
DOC output
(When DO−DET, output is Low)
19
B−GND
Circuit GND
←
20
FM AGC Filter
Emphasis monitor output
FM AGC control filter
(AGC−ON: 0 to 3 V DC,
AGC−OFF: 4.5 to 5 V by
external DC voltage.)
21
De-emphasis Filter
Non connect (Hi−Z)
De-emphasis filter connection pin If you don’t need, this pin is open
22
A−GND
Circuit GND
←
23
De-emphasis Output/ DFF for V−diff control
DE−emphasis output
V−2V Select
(ON: over 2 V, OFF: under 0.4 V)
MOD mode;
VD diff. Count select 0 V:
VD through 2 V: VD 1/2 diff
24
Video Input
MOD mode: Maximum video
input level is 1.5 Vp−p.
Video signal input. (from outside
CCD camera: 1 Vp−p)
Video signal input. (from
de-emphasis block: 0.5 Vp−p)
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8
3.3 V by internal bias.
(34 kW/66 kW)
DEMOD mode:
Open collector output.
MOD mode: Don’t connect
capacitor
LA72912V
PIN DESCRIPTION
Pin No.
Pin Name
Description
Equivalent Circuit
1
Emphasis Filter
Main Emphasis filter pin.
Before FM Modulation, make emphasis
characteristic at video signal.
Emphasis time constant must be matching at
de-emphasis time constant.
(If you don’t need the emphasis, this pin is
open.)
2
VCC5V
VCC pin. Supply voltage is 5 V DC. Please
connect de-coupling capacitor.
3
FM/Video OUT
Push-Pull output pin.
MOD mode: FM carrier output.
(1.8 Vp−p: Rout = 200 W)
DEMOD mode: Video signal output.
(2.0 Vp−p: Rout = 1 kW)
4
Regulator Filter
Internal regulator filter pin.
Please connect 0.1 mF (C1).
5
FM/VD Input
DEMOD mode: FM signal input.
Internal DC bias is 3.3 V. Please use
capacitor (C1) coupling.
MOD mode: VD signal input. Please input
VD signal directory.
Please consider input impedance.
6
MOD/DEMOD
Control
MOD mode/DEMOD mode setting pin.
MOD mode: Please set over 2 V DC voltage.
(2 to 5 V).
DEMOD mode: Please set under 0.4 V DC
voltage. (0 to 0.4 V).
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ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
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9
LA72912V
PIN DESCRIPTION (continued)
Pin Name
7
TC1(MOD)/
FMAGC Monitor
Control
MOD mode: TC1 filter pin. Please connect
C1.
DEMOD mode: FM−AGC monitor on/off
control.
GND: AGC−monitor ON
VCC: AGC−monitor OFF
8
TC2(DEMOD)/
FMAGC Monitor
Output
MOD mode: TC2 filter pin. Please connect
C1.
DEMOD mode: FM−AGC−monitor output
9
ASK−VCC5V
ASK block VCC. Please supply DC 5 V with
use capacitor for de-coupling.
10
ASK CAR IN
ASK carrier input Pin.
Please connect with capacitor, 2.1 V by
internal biased.
11
ASK DATA IN
Description
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Pin No.
Equivalent Circuit
ASK data input pin.
L level is lower than 0.4 V
H level is more than 2 V
ASK carrier
ASK data
12
ASK TX Output
ASK output pin.
Push-pull type output.
13
ASK RX Output
ASK detect output.
Open corrector type output.
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10
LA72912V
PIN DESCRIPTION (continued)
Pin No.
Pin Name
Description
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Equivalent Circuit
14
ASK RX Filter
ASK detect filter.
Connect capacitor for reject of ASK AC
component.
15
ASK AGC Filter/
AGC OFF
AGC filter pin for ASK.
Please connect pull-up resistance to this pin,
and do more than 4.5 V at voltage of this pin.
16
ASK RX Input
ASK input pin.
Please connect with capacitor, 3.3 V by
internal biased.
17
Standby Control
Standby control pin.
FM block standby: under 0.4 V DC voltage.
(0 to 0.4 V)
FM block operate: over 2 V DC voltage.
(2 to 5 V)
18
DOC−OUT/
2nd−Call Input
DEMOD mode: Drop-out output pin.
This pin is open collector output, so please
connect pull up resistor.
MOD mode: 2ND−CALL input.
2ND−CALL input: under 0.4 V DC voltage.
(0 to 0.4 V)
Normal: over 2 V DC voltage. (2 to 5 V)
19
B−GND
Circuit GND
20
FM AGC Filter
MOD mode: Emphasis monitor pin.
DEMOD mode: FM AGC filter pin.
If FM AGC no need (= AGC Off),
Please set pin 12 voltage over 4.5 V DC
voltage. (4.5 to 5 V)
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11
ASK signal
LA72912V
PIN DESCRIPTION (continued)
Pin No.
Pin Name
Description
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Equivalent Circuit
21
De−emphasis
Filter
DEMOD mode: De-emphasis filter pin.
De-emphasis time constant must be matching
at emphasis time constant.
(If you don’t need the emphasis, this pin is
open.)
22
A−GND
Circuit GND
23
De−emphasis
Output/V−2V
Select
DEMOD mode: Video signal output after De−
emphasis.
Output level is 0.5 Vp−p.
Connect capacitor to clamp input (pin 16).
MOD mode: DFF control pin. DFF is ON at
over 2 V DC voltage. (2 to 5 V)
24
Video Input
MOD mode: Video signal input pin
(from camera).
Input level is 1 Vp−p.
DEMOD mode: Video signal input pin (from
de-emphasis).
Input level is 0.5 Vp−p.
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12
LA72912V
TEST CIRCUIT
Figure 4. Test Circuit
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13
MECHANICAL CASE OUTLINE
PACKAGE DIMENSIONS
SSOP24 (275mil)
CASE 565AQ
ISSUE A
DATE 25 OCT 2013
1.00
SOLDERING FOOTPRINT*
GENERIC
MARKING DIAGRAM*
7.00
(Unit: mm)
0.65
XXXXX = Specific Device Code
Y = Year
M = Month
DDD = Additional Traceability Data
0.32
NOTE: The measurements are not to guarantee but for reference only.
*For additional information on our Pb−Free strategy and soldering
details, please download the ON Semiconductor Soldering and
Mounting Techniques Reference Manual, SOLDERRM/D.
DOCUMENT NUMBER:
DESCRIPTION:
98AON66068E
SSOP24 (275MIL)
XXXXXXXXXX
YMDDD
*This information is generic. Please refer to
device data sheet for actual part marking.
Pb−Free indicator, “G” or microdot “ G”,
may or may not be present.
Electronic versions are uncontrolled except when accessed directly from the Document Repository.
Printed versions are uncontrolled except when stamped “CONTROLLED COPY” in red.
PAGE 1 OF 1
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