LA7170 [SANYO]
RF Modulator for UHF Band (Supports SECAM); RF调制器的UHF频段（支持SECAM ）
| 型号： | LA7170 |
| 厂家： | 
SANYO SEMICON DEVICE |
| 描述： | RF Modulator for UHF Band (Supports SECAM) |
| 文件： | 总8页 (文件大小：111K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Ordering number : EN5675
Monolithic linear IC
LA7170M
RF Modulator for UHF Band (Supports SECAM)
Overview
Package Dimensions
The LA7170M is a UHF band RF modulator whose built-
in RF oscillator and mixer make it a single-chip RF
modulator solution. It also supports image positivity
modulation and AM sound modulation for SECAM
systems.
unit: mm
3036B-MFP20
[LA7170M]
SANYO: MFP20
Specifications
Maximum Ratings at Ta = 25°C
Parameter
Maximum supply voltage
Symbol
Conditions
Ratings
Unit
V
V
CC max
Pd max
Topr
7
250
Allowable power dissipation
Operating temperature
Storage temperature
Ta ≤ 75°C
mW
°C
–20 to +75
–55 to +150
Tstg
°C
Operating Conditions at Ta = 25°C
Parameter
Recommended operating voltage
Operating supply voltage range
Symbol
VCC
Conditions
Ratings
5.0
Unit
V
VCC op
4.5 to 5.5
V
Operating Characteristics at Ta = 25°C, V = 5 V, Unless otherwise specified, fp = 591.25 MHz, fs = 5.5 MHz,
CC
S9: ON, S10: B, S19A: B, S19B: B
Ratings
Parameter
Symbol
CC1
Conditions
Unit
min
24
typ
30
max
36
Current drain 1
I
With no input
With no input
mA
V
Regulator voltage
Vreq
3.7
3.9
4.1
[RF Output Level] (S19A: A, S19B: A)
Picture carrier output
P
With no input, with 50 Ω terminator
Ratio of levels at fp and fp+fs
77
12.5
52
79.5
15
82
dBµ
dB
Sound carrier output ratio
P/S
17.5
Sound second harmonic distortion
Sound third harmonic distortion
P/S2
P/S3
Ratio of levels at fp and fp+2fs
Ratio of levels at fp and fp+3fs
Ratio of P above to chrominance beat for
62
dB
58
68
dB
Chrominance beat
P/CB
P/V2
65
50
75
62
dB
dB
V
IN = 0.4 Vp-p with 4.43-MHz sine wave input
Ratio of P above to level at fp+2 MHz for
VIN = 1 Vp-p with 1-MHz sine wave input
Picture harmonic distortion
Continued on next page.
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
43098HA (OT) No. 5675-1/8
LA7170M
Continued from preceding page.
Ratings
typ
Parameter
Symbol
Conditions
Unit
min
max
[Picture]
Picture modulation
mp
mp max
∆(S/V)
DG
V
V
V
V
V
V
IN = 1 Vp-p, 100% white
73
80
93
87
%
%
Maximum picture modulation
SYNC compression
Differential gain
IN = 1.5 Vp-p, 100% white
88
98
5
IN = 1 Vp-p, 100% white {1–(S/V)(3/7)} × 100
IN : 5-stair step, mp = 80%, at fourth step
IN : 5-stair step, mp = 80%, at fourth step
IN = 1 Vp-p, 100% white S10 : a
1.5
2
%
5
%
Differential phase
DP
–6
88
0
+6
deg
%
SECAM picture modulation
TSG picture modulation
TSG SV ratio
mp SCM
93
98
mp TSG S9 : off
70
80
90
%
V/S
TS
S9 : off
S9 : off
S9 : off
S9 : off
S9 : off
S9 : off
6.3/3.7
63.7
3.6
6.8/3.2
64.0
4.0
4.0
24
7.3/2.7
64.3
4.4
4.4
26
TSG horizontal period
TSG synchronization pulse width
TSG white signal width
TSG first white rising edge
TSG second white rising edge
[Sound]
µs
µs
µs
µs
µs
HS
HV
3.6
TV1
TV2
22
38
40
42
FM sound modulation
Rank A
Rank B
Rank C
Rank D
Rank E
73
81
81
90
89
99
%
%
%
%
%
AIN = 1.66 Vp-p with 1-kHz sine wave input;
100% modulation: ±50 kHz; S10: b
Note: AIN = 1 Vp-p normally produces 60%
modulation.
ms FM
90
100
110
121
0.98
110
121
133
1.03
99
109
0.93
Interchannel FM sound modulation ratio
∆ms FM ms FM ratio with S10: off
S10: b/off; AIN = 1 Vp-p with 1-kHz sine
FM sound distortion
THD FM
0.3
55
1.0
%
wave input
S10: b/off; VIN = 1 Vp-p color bar; AIN with
FM sound signal-to-noise ratio
S/NFM 1-kHz sine wave input; ratio of level at AIN
1 Vp-p to that at AIN = 0 Vp-p
=
43
dB
Maximum modulation possible with S10:
ms max
Maximum FM modulation
AM sound modulation
400
43
%
%
%
b/off and sound distortion ratio within 3%
S10: a; AIN = 1 Vp-p with 1-kHz sine wave
ms AM
input
50
57
2
S10: a; AIN = 1 Vp-p with 1-kHz sine wave
AM sound distortion ratio
THD AM
input
0.5
S10: a; VIN = 1 Vp-p color bar; AIN with 1-kHz
S/N AM sine wave input; ratio of level at AIN = 1 Vp-p
to that at AIN = 0 Vp-p
AM sound signal-to-noise ratio
42
47
dB
Note: The AM sound items refer to direct AM detection from the sound carrier (fp + sound intercarrier). This device requires the special care associated with
all high-frequency devices.
No. 5675-2/8
LA7170M
Pin Functions
Pin No.
1
Symbol
VCC
Pin Voltage
5.0
Pin Description
Equivalent Circuit
1
VCC for baseband circuits
2
3
TANK1
TANK2
Connect tank circuits between these pins and the
REG pin.
3.9
4
REG
3.9
Regulator output
5
FM AUDIO IN
0
FM sound input
6
7
8
AM AUDIO IN
0
0
AM sound input
GND1
Ground for baseband circuits
Picture input. Clamp at SYNC tip.
VIDEO IN
3.0
Ground this pin through a 500-kHz oscillator.
Open : TSG ON
GND : TSG OFF
2.6
(open)
9
RES
Continued on next page.
No. 5675-3/8
LA7170M
Continued from preceding page.
Pin No.
Symbol
Pin Voltage
Pin Description
Equivalent Circuit
L (0 to 1.5 V) : PAL-TANK1
M (2.1 to 3.2 V) : PAL-TANK2
H (3.8 to 5.0 V) : SECAM-TANK2
2.6
(open)
10
FoCTL
11
12
13
14
OSC-B1
OSC-E1
OSC-E2
OSC-B2
2.5
1.8
1.8
2.5
This circuit forms a Colpitts oscillator.
15
16
17
GND2
0
5.0
0
Ground for RF oscillator
VCC for RF oscillator
VCC2
V
CC for RF mixer
GND3
Grounding this pin through a capacitor or resistor
attenuates the sound intercarrier level.
18
P/S
1.7
19
20
RF OUT
3.0
5.0
RF mixer signal output
VCC3
VCC for RF mixer
No. 5675-4/8
LA7170M
Block Diagram
No. 5675-5/8
LA7170M
Test Circuit
No. 5675-6/8
LA7170M
Sample Application Circuit
No. 5675-7/8
LA7170M
■ No products described or contained herein are intended for use in surgical implants, life-support systems, aerospace
equipment, nuclear power control systems, vehicles, disaster/crime-prevention equipment and the like, the failure of
which may directly or indirectly cause injury, death or property loss.
■ Anyone purchasing any products described or contained herein for an above-mentioned use shall:
➀ Accept full responsibility and indemnify and defend SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and
distributors and all their officers and employees, jointly and severally, against any and all claims and litigation and all
damages, cost and expenses associated with such use:
➁ Not impose any responsibility for any fault or negligence which may be cited in any such claim or litigation on
SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors or any of their officers and employees
jointly or severally.
■ Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for
volume production. SANYO believes information herein is accurate and reliable, but no guarantees are made or implied
regarding its use or any infringements of intellectual property rights or other rights of third parties.
This catalog provides information as of April, 1998. Specifications and information herein are subject to change
without notice.
PS No. 5675-8/8
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