Ordering number : ENA0979
LA72702NV
Monolithic Linear IC
BTSC Decoder for US TV
Overview
The LA72702NV is a US TV BTSC Decoder.
http://onsemi.com
Features
•
With SIF circuit, alignment-free* STEREO channel separation.
* When base band signal input, separation is adjusted by input level.
•
Dual slave address(80h, 84h).
Functions
•
SIF FM-Demodulator
•
STEREO detection
•
STEREO decoder
•
STEREO detection sensitivity change function
•
dbx Noise Reduction
•
SAP demodulator
•
SAP detection
•
SAP output select 2-levels
•
SAP detection sensitivity change
function
Specifications
Maximum Ratings
at Ta = 25°C
Parameter
Maximum power supply voltage
Allowable power dissipation
Operating temperature
Storage temperature
Symbol
VCCH max
Pd max
Topr
Tstg
Ta≤85°C, Mounted on a specified board*
Conditions
Ratings
7.0
290
-20 to +85
-55 to +150
Unit
V
mW
°C
°C
* Mounted on a specified board: 114.3mm×76.1mm×1.6mm, glass epoxy board
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating
Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability.
Operating Conditions
at Ta
=
25°C
Parameter
Recommended operating voltage
Allowable operating voltage range
Symbol
vacate
VCCH op
Conditions
Ratings
5.0
4.5 to 5.5
Unit
V
V
Semiconductor Components Industries, LLC, 2013
July, 2013
N2807 TI IM 20070112-S00005 No.A0979-1/10
LA72702NV
Electrical Characteristics
at Ta
=
25°C, VDD = 5.0V
Parameter
Current dissipation
SIF input level (Reference)
Symbol
ICC
VILIM
Conditions
min
No signal Inflow current at pin 19, default condition
fc = 4.5MHz
Deviation
MONO (300Hz, Mod = 100%, Pre-emphasis ON)
±25kHz
Base band input level (Reference)
VILIMB
100% Modulation
MONO(L+R) : 530mVp-p (300Hz, Pre-emphasis ON)
SUB(L-R)
SAP
MONO output level
MONO distortion
MONO frequency characteristics
MONO S/N ratio
STEREO output level
STEREO distortion
STEREO frequency characteristics
STEREO S/N ratio
STEREO separation 1
STEREO separation 2
STEREO Detection level-1
VOMON
THDMON
FCM1
SNM
VOST
THDS
FCS1
SNS
STSE1
STSE2
VINSD1
: 380mVp-p (300Hz, dbx-NR ON), Pilot : 110mVp-p
: 300mVp-p (300Hz, dbx-NR ON)
-7.0
-5.5
0.15
-2
55
-7.0
0
65
-5.5
0.5
-2
50
20
20
30
0
60
25
25
38
45
-4.5
1.0
2
-4.5
0.6
2
dBV
%
dB
dB
dBV
%
dB
dB
dB
dB
%
30
(80)
Ratings
typ
40
(90)
max
50
(100)
mA
dBμV
Unit
fm=1kHz, 100% Mod, 15kHz LPF
fm=1kHz, 100% Mod, 15kHz LPF
fm=3kHz, 30% Mod, Pre-emphasis ON
* Measure ratio from fm=1kHz level.
S=VOMON, N=0% Mod, 15kHz LPF
fm=1kHz, 100% Mod, 15kHz LPF
fm=1kHz, 100% Mod, 15kHz LPF
fm=3kHz, 30% Mod, 15kHz LPF
* Measure ratio from fm=1kHz level.
S=VOST, N=0% Mod, 15kHz LPF
f=300Hz (R/L), 30% Mod, 15kHz LPF
f=3kHz (R/L), 30% Mod, 15kHz LPF
Except Stereo Detection
* Measure pilot level.
Stereo Detection
* Serial control “SENS HI” Pilot (fH)=15.73kHz
STEREO Detection level-2
STEREO Detection hysteresis
SAP output level-1
SAP output level-2
SAP distortion
SAP S/N ratio
SAP detection level-1
VINSD2
HYST
VOSA1
VOSA2
THDSA
SNSA
VINSA1
Except Stereo Detection
* Serial control “SENS LO”
Input Mod. Difference at Stereo/Except Stereo Det.
* Serial control “SENS HI”
fm=1kHz, 100% Mod, 15kHz LPF
* SAP-1 (serial control)
fm=1kHz, 100% Mod, 15kHz LPF
* SAP-2 (serial control)
fm=1kHz, 100% Mod, 15kHz LPF
S=VOSA2, N=0% Mod, 15kHz LPF
Except SAP
→
SAP Det.
* Serial control “SENS HI” SAP Carrier=5fH only
* Measure output level.
SAP detection level-2
VINSA2
Except SAP
→
SAP Det.
* Serial control “SENS LO”
* Measure output level.
SAP detection hysteresis
HYSA
Input Mod. Difference at SAP/Except SAP Det.
* SAP carrier only.
* Serial control “SENS HI”
MODE output MONO
MODE output SAP
MODE output STEREO
MODE output ST + SAP
Stereo detect speed (Reference )
MODMO
MODSA
MODST
MODSS
STDT
Input=MONO : f=1kHz, 0% Mod
Input=SAP : Carrier
Input=STEREO : Pilot
Input=STEREO : Pilot, SAP : Carrier
Input=STEREO : Pilot
I C data no-send
Measure pin 20 voltage change to 2.8V timing from
Power ON
SAP detect speed (Reference )
SAPDT
SAP : Carrier
I C data no-send
Measure pin 20 voltage change to 1.9V timing from
Power ON
* Normally measurement condition is Input = SIF mode (90dBμV)
* " Reference " Items are reference levels, their specs are no-guarantee.
2
2
Stereo Detection
38
10
-14.0
-7.5
47
20
-11.0
-5.5
0.7
53
30
-8.0
-3.5
1.5
%
%
dBV
dBV
%
dB
50
10
60
17
24
%
17
24
31
%
2
5
10
%
0.7
1.6
2.5
3.5
1
1.9
2.8
3.8
(480)
1.3
2.2
3.1
4.2
(1000)
V
V
V
V
ms
(350)
(1000)
ms
No.A0979-2/10
LA72702NV
I
2
C Control Table
Grp-1 (Normally use : group-1 only)
D8
*
D7
D6
D5
D4
D3
D2
0
0
1
1
*
0
1
*
0
1
*
0
1
*
0
1
*
0
1
*
0
1
* : Shows Initial condition
D1
0
1
0
1
Condition
Stereo
SAP
Both
MUTE
Normal (Auto DET)
Forced Mono
SAP SENS LO
SAP SENS HI
Stereo SENS LO
Stereo SENS HI
SAP Level-1
SAP Level-2
SIF mode
Base Band mode
Fix
Prohibit (TEST MODE)
Read out data
D8
D7
D6
0
0
1
0
1
D5
0
D4
0
D3
0
D2
0
D1
0
Condition
Fixed
Normal
SAP det
Normal
Stereo det
Test mode condition(Reference)
When STOP condition transform at Grp-1 data-end, controlled NORMAL mode.
Grp-2 is only test condition. Usually, these data are no-need. Their data are no guarantee, except all L condition.
D8
0
D7
0
D6
0
D5
0
D4
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
Blank Bits are no-care
D3
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
D2
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
D1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Condition/Monitor position
Normal (Usually, Fixed)
TEST-1 SIF output
TEST-2 SAP BPF
TEST-3 (reserved)
TEST-4 ST VCO
TEST-5 (reserved)
TEST-6 SAP monitor
TEST-7 ST monitor
TEST-8 Pilot cancel monitor
TEST-9 dbx 2.19k LPF
TEST-10 dbx 408 LPF
TEST-11 dbx DET 10k LPF
TEST-12 dbx SPEC 7.6k LPF
TEST-13 dbx SPEC output
TEST-14 L+R/lL-R monitor
TEST-15 dbx 2.09k LPF
Slave addresses are 80h (1000 000*, at pin8 Open/GND) and 84h (1000 010*, at pin8 H).
No.A0979-4/10
FPGA/CPLD
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
