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Sanyo
Sanyo

LA7565B Datasheet

IF Signal-Processing IC for PAL/NTSC Multi-System Audio TV and VCR Products


LA7565B Datasheet Preview


Ordering number :EN5636
Monolithic Linear IC
LA7565B, 7565BM
IF Signal-Processing IC for PAL/NTSC Multi-System
Audio TV and VCR Products
Overview
The LA7565B/M is a PAL/NTSC multi-system audio
VIF/SIF signal-processing IC that adopts a minimal-
adjustment technique. The VIF circuit adopts a minimal-
adjustment technique in which AFT adjustment is made
unnecessary by VCO adjustment to simply end product
adjustment. The FM detector circuit uses PLL detections
to support multi-system audio detection. Since the
LA7565BM include an SIF converter on chip, it is easy to
implement multi-system audio. In addition, it also includes
a buzz canceller that suppresses Nyquist buzz to achieve
improved audio quality.
Functions
[VIF Block]
• Minimal adjustment PLL detector
• AFT
• RF AGC
• Equalizer amplifier
• SIF converter
[First SIF Block]
• First SIF detector
• Inter/split switch
• HPF
[SIF Block]
• PLL type FM detector
[Mute Block]
• AV mute
Package Dimensions
unit: mm
3067-DIP24S
[LA7565B]
unit: mm
3112-MFP24S
[LA7565BM]
Features
• Allows the use of a switch circuit to switch between
spilt and intercarrier operation.
• Improved buzz and buzz beat characteristics provided by
a PLL detector plus buzz canceller system.
• The IF AGC second filter is built in.
• PAL/NTSC multi-system audio can be implemented
easily.
• Adjustment-free circuit design that does not require AFT
and SIF coils.
SANYO: DIP24S
SANYO: MFP24S
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
83097HA(OT) No. 5636-1/16
Page 1

LA7565B, 7565BM
Specifications
Maximum Rating at Ta = 25°C
Parameter
Maximum supply voltage
Circuit voltage
Circuit current
Allowable power dissipation
Operating temperature
Storage temperature
Symbol
VCC max
V13, V17
I6
I10
I24
Pd max
Topr
Tstg
Conditions
(LA7565B) Ta 68°C
(LA7565BM) Ta 50°C, independent IC
(LA7565BM) * Mounted on a printed circuit board
Note: * When mounted on a 65 × 72 × 1.6 mm epoxy glass laminate printed circuit board.
Ratings
10
VCC
–3
–10
–2
720
420
720
–20 to +70
–55 to +150
Unit
V
V
mA
mA
mA
mW
mW
mW
°C
°C
Operating Conditions
Parameter
Recommended supply voltage
Operating supply voltage
Symbol
VCC
VCC op
Conditions
Electrical Characteristics at Ta = 25°C, VCC = 9 V, fp = 38.9 MHz
Parameter
[VIF Block]
Circuit current
Maximum RF AGC voltage
Minimum RF AGC voltage
Input sensitivity
AGC range
Maximum allowable input
No-signal video output voltage
Synchronizing signal tip voltage
Video output level
Black noise threshold voltage
Black noise clamp voltage
Video S/N ratio
C-S beat
Frequency characteristics
Differential gain
Differential phase
No-signal AFT voltage
Maximum AFT voltage
Minimum AFT voltage
AFT detection sensitivity
VIF input resistance
VIF input capacitance
APC pull-in range (U)
APC pull-in range (L)
AFT tolerance frequency 1
VCO1 maximum frequency range (U)
VCO1 maximum frequency range (L)
VCO control sensitivity
Symbol
Conditions
I5
V14H
V14L
VIN
GR
VIN max
V6
V6 tip
VO
VBTH
VBCL
S/N
IC-S
fC
DG
DP
V13
V13H
V13L
Sf
Ri
Ci
fPU
fPL
dfa 1
dfu
dfl
B
S1 = OFF
6 MHz
38.9 MHz
38.9 MHz
Ratings
9
8.5 to 9.5
Unit
V
V
Ratings
Unit
min typ max
37.4
7.5
26
62
92
3.5
1.15
1.7
0.5
2.5
48
38
–3
3.5
8
0
25
0.8
–500
1.0
0.9
44 50.6 mA
8.1 V
0 0.5 V
32 38 dBµV
68 dB
97
3.8
1.45
4.2
1.74
dBµV
V
V
2.0 2.3 Vp-p
0.8 1.1 V
2.8 3.1 V
50 dB
43
–1.5
3
dB
dB
6.5 %
3
4.4
8.7
0.18
5 deg
5.5 V
9V
1V
36 47 mV/kHz
1.5 k
3 pF
1.3
–1.5
0
1.3
–0.8
+500
MHz
MHz
kHz
MHz
–1.5
1.8
–1 MHz
3.6 kHz/mV
Continued on next page.
No. 5636-2/16
Page 2

Continued from preceding page.
Parameter
[First SIF Block]
Conversion gain
5.5 MHz output level
First SIF maximum input
First SIF input resistance
First SIF input capacitance
[SIF Block]
Limiting voltage
FM detector output voltage
AM rejection ratio
Total harmonic distortion
SIF S/N ratio
[SIF Converter]
Conversion gain
Maximum output level
Carrier suppression ratio
Oscillator level
Oscillator leakage
Oscillator stopped current
LA7565B, 7565BM
Symbol
Conditions
VG
SO
Si max
Ri (SIF)
Ci (SIF)
33.4 MHz
33.4 MHz
Vi (lim)
VO (FM) 5.5 MHz ± 30 kHz
AMR
THD
S/N (FM)
VG (SIF)
V max
VGR (5.5)
VOSC
OSCleak
I4
Ratings
Unit
min typ max
37.5
46
112
43
49.5
dB
100 150 mVrms
223 mVrms
2 k
3 pF
43 48 53 dBµV
720 900 1100 mVrms
50 60
dB
0.3 0.8 %
57 62
dB
7 11 14 dB
102 108 111 dBµV
14 26
dB
70 mVp-p
8 24
dB
300 µA
Mounted on a 65 × 72 × 1.6 mm printed circuit board
Independent IC
Ambient temperature, Ta – °C
Ambient temperature, Ta – °C
No. 5636-3/16
Page 3
Part Number LA7565B
Manufactur Sanyo
Description IF Signal-Processing IC for PAL/NTSC Multi-System Audio TV and VCR Products
Total Page 16 Pages
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