SANYO LA9520V Datasheet
Ordering number : ENN6469A
22002TN (OT) / 71400RM (OT) No. 6469-1/12
Overview
The LA9520V is a receiver IC developed for free-space
infrared transmission of stereo audio and video signals. It
integrates all the required functions for reception,
including I/V conversion for the received signal, a
preamplifier, ALC, audio signal demodulation, and video
signal demodulation functions, on a single chip. An AV
coupler system can be implemented easily using this IC
and a transmitter IC (such as the LA9511W or
LA9512W).
Functions and Features
[Input Block]
•
I/V conversion featuring excellent wideband characteristics
• Preamplifier ALC with wide ALC operating range
[Audio Block]
•
Audio demodulator: Built-in 4.3 and 4.8 MHz demodulation
circuits.
• Muting function:Mutes the output stage when there is
no input signal. The muting function operating level can
be adjusted from an input pin.
• Output amplifiers:The right and left levels can be
adjusted by applying voltages to input pins. Electronic
volume control support.
[Video Block]
• Video demodulator
• Video amplifier:Supports 75 Ω drive. Adjustable output
level: supports an electronic volume control.
• Muting function:Mutes the output stage when there is
no input signal. The muting function operating level can
be adjusted from an input pin.
• Filter:Removes unneeded high-frequency components.
Package Dimensions
unit: mm
3247A-SSOP36
1
36
18
19
0.8
15.0
0.5
7.6
0.2
0.3
(0.7)
5.6
(1.5)
1.7max
0.1
SANYO: SSOP36
[LA9520V]
LA9520V
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
AV Coupler Receiver
Monolithic Linear IC
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.
Parameter Symbol Conditions Ratings Unit
Maximum supply voltage V
CC
max 6.5 V
Allowable power dissipation Pd max 550 mW
Operating temperature Topr –20 to +70 °C
Storage temperature Tstg –40 to +150 °C
Specifications
Maximum Ratings at Ta = 25°C
No. 6469-2/12
LA9520V
Parameter Symbol Conditions Ratings Unit
Recommended supply voltage V
CC
5.0 V
Allowable operating voltage range V
CC
opg 4.8 to 6.0 V
Operating Conditions at Ta = 25°C
Parameter Symbol Conditions
Ratings
Unit
min typ max
Current drain I
CC
No input, VCC= 5 V, Test pins: 3, 7, 2, 5, and 32 45 68 83 mA
[Preamplifier Block] *An unmodulated carrier input is used for preamplifier block testing.
Preamplifier frequency
Fpre
Pin 9 input. The –3 dB frequency band,
20 MHz
characteristics f = 11.8 MHz, V
IN
= 70 dBµ, Test pin: 31
Input impedance Zin Pin 9 internal voltage conversion resistor, Test pin: 9 0.3 0.5 1.0 kΩ
Output level Voutpre
The output level when the AGC is on, V
IN
= 100 dBµ,
0.55 0.9 1.5 Vp-p
Test pin: 31
Gain (AGC off) Gvpre f = 11.8 MHz, V
IN
= 70 dBµ, Test pin: 31 17 23 29 dB
Harmonic distortion 1 TH1Pre
The second harmonic of 12.5 MHz, V
IN
= 100 dBµ,
–40 dB
Test pin: 31
[Video Block]
Video amplifier gain adjustment
Pin 9 input. For a 2 MHz modulated input,
voltage
Vvcont The voltage such that the pin 1 output level becomes 1 Vp-p, 0.05 1.15 Vdc
V
IN
= 100 dBµ, Test pin: 35
Pin 36 input. The conversion voltage ratio linearity at the
Demodulator linearity LINdeomo points ±3.5 MHz from the 12.5 MHz reference. –7 0 +7 %
V
IN
= 100 dBµ, Test pin: 33
Demodulator demodulation
Vleak
Pin 36 input. The pin 33 leakage when a carrier frequency
–50 dB
leakage of 12.5 MHz is applied. V
IN
= 100 dBµ, Test pin: 33
Demodulator second harmonic
Pin 36 input. The second harmonic leakage level when a
distortion
THD2 carrier frequency of 12.5 MHz is applied. –55 dB
V
IN
= 100 dBµ, Test pin: 33
Demodulator conversion output Vconv.
Pin 36 input. The output value when a 2 MHz modulated
0.1 0.23 0.4 Vp-p
waveform is input, VIN= 100 dBµ, Test pin: 33
Pin 34 input. With a 75 Ω load on pin 1, the total gain
Video amplifier gain GVamp after adjusting the output to be 1 Vp-p, f = 150 kHz. 13 dB
V
IN
= 0.1 Vp-p, Test pin: 1
THD1V
The second harmonic of 150 kHz, V
IN
= 0.1 Vp-p
–50 dBVideo harmonic distortion 1
Test pin: 1
THD2V
The second harmonic of 11 MHz, VIN= 0.1 Vp-p
–48 dBVideo harmonic distortion 2
Test pin: 1
Video driver frequency
Fvamp
The gain ratio for 150 kHz and 5 MHz. V
IN
= 0.1 Vp-p
–6 –3 +3 dB
characteristics Test pin: 1
Driver maximum output voltage Voutmax
VCC= 5 V, the maximum output amplitude
1.2 1.5 Vp-p
with a 75 Ω load. Test pin: 1
DC clamp level difference VCLMP
The difference between the pin 4 and the pin 5 voltages
0.05 0.5 Vdc
with no input. Test pins: 4 and 5
Electrical Characteristics at Ta = 25°C, VCC= 5 V
Representative input conditions:
Carrier input frequency - Audio left channel: 4.3 MHz
Audio right channel: 4.8 MHz
Video: 11.8 MHz
Audio modulation frequency: fm = 400 Hz, 1 kHz, modulation ∆f = ±22.5 kHz (standard), ±75 kHz
Video signal input: Modulation of 2 MHz (standard) for a 0.5 Vp-p NTSC composite video signal
With the circuit adjusted to an audio demodulated output of 300 mVrms and a video demodulated output of
1 Vp-p for the above standard input.
Continued on next page.
No. 6469-3/12
LA9520V
Continued from preceding page.
Parameter Symbol Conditions
Ratings
Unit
min typ max
[Audio Block] * Audio block initial output is adjusted with the pin 9 input.
Audio left channel
For a 4.3 MHz, ∆f = ±22.5 kHz, fm = 400 Hz input,
Output adjustment voltage
VacontL the pin 14 adjustment voltage such that the pin 20 output 0.05 1.15 Vdc
is 30 mV rms. V
IN
= 80 dBµ, Test pin: 14
Audio right channel
For a 4.8 MHz, ∆f = ±22.5 kHz, fm = 400 Hz input,
Output adjustment voltage
VacontR the pin 15 adjustment voltage such that the pin 21 output 0.05 1.15 Vdc
is 30 mV rms. V
IN
= 80 dBµ, Test pin: 15
Audio right channel
After reference output adjustment, the pin 21 demodulator
demodulator output
VdemR 75 kHz
output when the input to pin 26 is 4.8 MHz ±75 kHz, 0.6 0.9 1.2 Vrms
fm = 1 kHz, V
IN
= 80 dBµ, Test pin: 21
Audio left channel
After reference output adjustment, the pin 20 demodulator
demodulator output
VdemL 75 kHz output when the input to pin 28 is 4.3 MHz ±75 kHz, 0.6 0.9 1.2 Vrms
fm = 1 kHz, V
IN
= 80 dBµ, Test pin: 20
Audio left channel amplifier
The total amplifier gain (after output level adjustment)
output
GvampL from the pin 23 input to the pin 20 output. 10 dB
V
IN
= 100 mVrms, f = 400 Hz., Test pin: 20
Audio right channel amplifier
The total amplifier gain (after output level adjustment)
output
GvampR from the pin 16 input to the pin 21 output. 10 dB
V
IN
= 100 mVrms, f = 400 Hz., Test pin: 21
The frequency characteristics (after output level
Audio amplifier frequency
FA-AMP L
adjustment) from pin 23 to pin 20. The frequency such
15 kHz
characteristics (L) that the level is down –3 dB from the output reference at
f = 400 Hz, Test pin: 20
The frequency characteristics (after output level
Audio amplifier frequency
FA-AMP R
adjustment) from pin 16 to pin 21. The frequency such
15 kHz
characteristics (R) that the level is down –3 dB from the output reference at
f = 400 Hz, Test pin: 21
Left channel total harmonic
The left channel distortion when a 4.3 MHz, ∆f = ±22.5 kHz,
distortion
THDL fm = 1 kHz signal is input to pin 28. 1.0 3 %
V
IN
= 80 dBµ, Test pin: 20
Right channel total harmonic
The right channel distortion when a 4.8 MHz, ∆f = ±22.5 kHz,
distortion
THDR fm = 1 kHz signal is input to pin 26. 1.0 3 %
V
IN
= 80 dBµ, Test pin: 21
With no modulation, the standard output reference
Left channel output noise
V
N
Lch
signal-to-noise ratio
45 55 dB
voltage IHFA filter, the LA9520V independent signal-to-noise ratio,
V
IN
= 80 dBµ, Test pin: 20
With no modulation, the standard output reference
Right channel output noise
V
N
Rch
signal-to-noise ratio
45 55 dB
voltage IHFA filter, the LA9520V independent signal-to-noise ratio,
V
IN
= 80 dBµ, Test pin: 21
[Muting Block]
Audio muting operating input With no carrier input, the value of the voltage adjusted to
level 1 mute the audio output.
(Muting level adjustment Vmcont1 * With an external 30 dB amplifier connected to pin 9. 0.05 1.05 Vdc
voltage) Rg = 4.7 kΩ
Test pin: 13
Video muting operating input With no carrier input, the value of the voltage adjusted to
level 2 mute the audio output.
(Muting level adjustment Vmcont2 * With an external 30 dB amplifier connected to pin 9. 0.05 1.05 Vdc
voltage) Rg = 4.7 kΩ
Test pin: 12
Muted signal output
VmuteL
The pin 29 output when the muting function is off.
0.5 Vdc
Low level Test pin: 29
Muted signal output
VmuteH
The pin 29 output when the muting function is on.
V
CC
– 1 Vdc
High level Test pin: 29
Noise detection voltage level VDET
The pin 11 voltage with no carrier input.
3.0 Vdc
With an external 30 dB amplifier connected to pin 9.
No. 6469-4/12
LA9520V
Pin Assignment and Block Diagram
27282930313233343536
10987654321 11 12 13 14 15
2223242526
16 17 18
21 20 19
VIDEO
DEMOD
V-AMP
V-REG
CLAMP
MUTE
VIDEO
AMP
PRE-AMP
AGC-DET
I .V
AGC
MUTE
DET
BPF
A-REG
GAIN
MUTE
VOLUME
FM-LCH
DEMODU.
AUDIO-L
AMP
MUTE
AUDIO-R
AMP
MUTE
FM-RCH
DEMODU.
D-AMP
VIDEO-IN
VIDEO-GAIN
ADJ
DE-EMP2
DRIVE OUT1
DRIVE OUT2
DRIVE -VCC
CLAMP -OUT
CLAMP -IN
DRIVE GND
PRE -VCC
PRE-GND
PD-IN
MUTE-DET
VIDEO
MUTE-ADJ
AUDIO
MUTE-ADJ
AUDIO
LOUT-ADJ
AUDIO
ROUT-ADJ
AUDIO
RIN
AUDIO-R
DEEMP-OUT
PHASE
SHIFT-R
DE-EMP1
VIDEO-VCC
PRE OUT
MUTE -OUT
FM-LIN
AGC DET
VIDEO-GND
FM-RIN
AUDIO-VCC
AUDIO-REC
AUDIO-GND
AUDIO-LIN
AUDIO-LIN
DEEMP-OUT
AUDIO-ROUT
AUDIO-LOUT
PHASE-SHIFT
Lch
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