Ordering number : ENN7875B
Monolithic Linear IC
LA77000V
Overview
VHF Band RF Modulator
(US3, 4ch Compatible)
The LA77000V is a VHF band RF module that supports US3, 4ch Compatible.
Functions
•
RF VCO (AGC).
•
RF Mixer.
•
RF Buffer.
•
Video clamp.
•
White clipping.
•
Audio FM.
•
4V regulator.
•
Reference OSC.
Specifications
Maximum Ratings
at Ta = 25°C
Parameter
Maximum supply rating
Allowable power dissipation
Operating temperature
Storage temperature
Symbol
VCC max
Pd max
Topr
Tstg
Ta
≤
75°C
Conditions
Ratings
7.0
350*
-20 to +75
-55 to +150
Unit
V
mW
°C
°C
*
Mounted to the glass epoxy resin made board (114.3mm×76.1mm×1.6mm)
Operating Conditions
at Ta = 25°C
Parameter
Recommended operating voltage
Operating voltage range
Symbol
VCC
VCC op
Conditions
Ratings
5.0
4.5 to 5.5
Unit
V
V
Any and all SANYO Semiconductor 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 Semiconductor representative
nearest you before using any SANYO Semiconductor products described or contained herein in such
applications.
SANYO Semiconductor 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 Semiconductor
products described or contained herein.
N2206 / 91405 MS OT B8-7276 No.7875-1/8
LA77000V
Electrical Characteristics/Operating Characteristics
at Ta = 25°C, VCC = 5.0V, Measured with US3ch unless
otherwise specified
Parameter
Current drain 1
Current drain 2
Regulator voltage
Antenna driver voltage
Negative Resistance (pin7)
RF type
Video carrier frequency accuracy
Video carrier frequency stability
Video carrier output US
Audio carrier output ratio
Audio 2 harmonic distortion
Audio 3 harmonic distortion
Chroma beat
Video harmonic distortion
Video type
Video modulation
White clip level
Differential gain
Differential phase
Video signal frequency response
Video S/N
Audio type
Audio carrier frequency accuracy
Audio modulation
Maximum audio modulation
Audio distortion
Audio S/N
Fs
Ms
Msmx
THD
AS/N
X’tal accuracy 30ppm
Ain = 1kHz, 1Vp-p
(Note 3)
THD < 3%
Ain = 1 kHz, 1Vp-p
Ain = 1 kHz, 1Vp-p
Vin = Color bar, 1Vp-p
45
-5
90
400
0.4
50
2
100
5
110
kHz
%
%
%
dB
Mp
WCL
DG
DP
Rfv
VS/N
Vin = Stair step, 1Vp-p
Vin = Stair step, 1.5Vp-p
Vin = 10-Stair step, 1Vp-p
(Note 2)
Vin = 10-Stair step, 1Vp-p
(Note 2)
Vin = CW, 1Vp-p
0.75 MHz to 3.75MHz
Vin = 50%
4.2MHz LPF ON
75
90
-5
-5
-1.1
-0.4
50
80
95
85
99
5
5
0.3
%
%
%
°C
dB
dB
rd
nd
Symbol
ICC1
ICC2
Vreg
Vanton
-R
No signal, pin 6 high
No signal, pin 6 low
No signal
Pin 6 high, 220Ω load
CI≤100
Conditions
min
28
15
3.7
3.2
1.2
Ratings
typ
41
22
3.9
3.5
2.2
max
53
29
4.1
3.8
Unit
mA
mA
V
V
kΩ
Fp
Fpt
Pus
P/S
P/S2
P/S3
P/CB
P/V2
Fp (US3ch): 61.25MHz
X’tal accuracy 30ppm
X’tal accuracy 30ppm
Ta = 4°C to 38°C
No signal (Note 1)
S: fp + 4.5MHz
S2: fp + 2
×
4.5MHz
S3: fp + 3
×
4.5MHz
Vin = 3.58MHz, 0.6Vp-p
CB: fp + 920kHz
Vin = 1MHz, 1Vp-p
V2: fp + 2MHz
-25
-25
85.5
14.5
50
45
65
45
87.5
16
65
55
74
72
25
25
89.5
17.5
kHz
kHz
dBµ
dB
dB
dB
dB
dB
Note 1:
Note 2:
Note 3:
9.5dB added to the RFOUT value measured with a spectrum analyzer of the input impedance of 50Ω.
Difference between 1 stair step and 8 stair step of 10 stair step.
100% =
±25kHz
modulation.
No. 7875-2/8
LA77000V
Package Dimensions
unit : mm
3178B
Block Diagram
No. 7875-3/8
LA77000V
Pin equivalent circuit
Pin
No.
1
Symbol
P/S ADJ
Voltage
2.7
Circuit
Remarks
Capacitor and additionally a Resistor may inserted between
the circuit and GND attenuate the audio inter-carrier level.
10kΩ
500Ω
20PF
2kΩ
1
2
AUDIO
IN
0
FM audio Input.
3kΩ
2
100kΩ
3
FM LPF
2.2
Control pin of output FM oscilator for the PLL phase detector
charge pump.
1kΩ
3
1kΩ
1kΩ
2.2V
4
5
GND
VIDEO
IN
0
2.6
Video Input
Clamped with sink chip.
100Ω
500Ω
5
6
CARR
OFF
-
Hi:14pin Hi RF Operating
Lo:14pin Lo RF Stop
100kΩ
25kΩ
6
20kΩ
Continued on next page.
No. 7875-4/8
LA77000V
Continued from preceding page.
Pin
No.
7
Symbol
IN XTAL
Voltage
3.5
Circuit
Remarks
4MHz oscillator inserted between the circuit and GND.
External input of the 4MHz signal possible. Insertion of
about 270kΩ resistor between the circuit and GND
ensurescompatibility with 3.58MHz of VTR chroma
sub-carrier.
5PF 100Ω
500Ω
Insertion of about 270kΩ resistor between the circuit and
VCC ensurescompatibility with 27MHz of D-STB reference.
7
8
CH
1.7
CH selector pin
33kΩ
8
5kΩ
17kΩ
US3: 4.2V or more
US4: 2.7V to 3.8V
9
10
11
12
PLL
GND
RF GND
VCC2
RF LPF
0
0
5.0
2.6
PLL type GND
RF type GND
RF VCO type VCC
Control pin of output RF oscillator for the PLL phase
detector charge pump.
2.8V
1kΩ
2.2V
1kΩ
12
2kΩ
Continued on next page.
No. 7875-5/8
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