- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄373629 > TEA2028-TEA2029 (意法半導(dǎo)體) APPLICATION NOTE PDF資料下載
參數(shù)資料
| 型號(hào)： | TEA2028-TEA2029 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | APPLICATION NOTE |
| 中文描述： | 應(yīng)用筆記 |
| 文件頁(yè)數(shù)： | 12/47頁(yè) |
| 文件大?。?/td> | 532K |
| 代理商： | TEA2028-TEA2029 |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)當(dāng)前第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)第21頁(yè)第22頁(yè)第23頁(yè)第24頁(yè)第25頁(yè)第26頁(yè)第27頁(yè)第28頁(yè)第29頁(yè)第30頁(yè)第31頁(yè)第32頁(yè)第33頁(yè)第34頁(yè)第35頁(yè)第36頁(yè)第37頁(yè)第38頁(yè)第39頁(yè)第40頁(yè)第41頁(yè)第42頁(yè)第43頁(yè)第44頁(yè)第45頁(yè)第46頁(yè)第47頁(yè)
Where :
R1 = 7
, L1= 1.26mH,C1 =78pF,C0 = 507pF
- Seriesresonancefrequency :
1
2
π
√
- Parallelresonance frequency :
f
P
= f
S
√
C0
- Tolerancewithin the resonancearea :
503kHz
±
0.3 %
- Temperaturestability:
±
0.3%of f
O
at
T= 100
o
C
f
S
=
= 503kHz
1
+
C1
= 540kHz
B - SIMPLIFIEDBLOCKDIAGRAM OF VCO
Theoverallarrangementisequivalentto avariable-
phase amplifier configured in closed loop with the
externalpassive filter.
The system will oscillate if the open-loop gain is
0dB and if V
OUT
leads V
IN
.
Inclosed-looposcillatingmode,thephasevariation
of V
18
/V
IN
imposed by V
22
will result in same
V
OUT
/V
18
variationbut of oppositesign.
This phase change will finally correspond to a
change in frequency.
C. - CHARACTERISTICS OF THE EXTERNAL
FILTER
The ceramic resonator behaves as a capacitor at
f < f
S
(f
S
: series resonance frequency) and as an
inductorat frequenciesfallingbetweenitstworeso-
nance frequencies.
Combined with a ”R.C” network to generatea 90
o
phase lag, the overallarrangement will exhibit the
following characteristics : see Figure21
Figure 21
450
600
1
10
10
10
10
4
3
2
0
I
)
P
(
+90
-90
500
f
S
550
f
P
2
Figure18
18
19
Filter
Amp.
V
22
Phase Control
V
18
V
IN
V
OUT
(open-loop)
2
Figure 20
17
1
V
S1
2mA
A2
1
+
+
I
3
A1
500
19
18
C1
150
pF
R1
1.8
k
R
220
C
1.5nF
5
R
220
22
5.6V
i
1
Comparator
V
22
+
Non-linear
Amplifier
A4
A3
R
2
1.1 V
DC
I
1
I
2
2
Figure19
19
2
V
18
V
OUT
503kHz
440
2.4k
Resistor= Pin 19 InputResistance
-135
°
Working Area
Attenuation
Frequency
(kHz)
-20
-10
(dB)
V
18
V
OUT
20 log
V
18
V
18
V
OUT
/
φ
(Degrees)
-24
°
480
500
520
-30
-90
-150
φ
Ant
2
TEA2028 - TEA2029APPLICATIONNOTE
12/46
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TEA2028 | APPLICATION NOTE |
| TEA2028B | SWITCH MODE POWER SUPPLY PRIMARY CIRCUIT |
| TEA2128 | SWITCH MODE POWER SUPPLY PRIMARY CIRCUIT |
| TEA2164S | SWITCH MODE POWER SUPPLY PRIMARY CIRCUIT |
| TEA2029C | COLOR TV SCANNING AND POWER SUPPLY PROCESSOR |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TEA2029 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:APPLICATION NOTE |
| TEA2029C | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:COLOR TV SCANNING AND POWER SUPPLY PROCESSOR |
| TEA2029CV | 制造商:TEMIC 制造商全稱:TEMIC Semiconductors 功能描述:Timing Processor (LINE, FRAME, SMPS) for TV Sets |
| TEA2031A | 功能描述:視頻 IC East/West Correction RoHS:否 制造商:Fairchild Semiconductor 工作電源電壓:5 V 電源電流:80 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-28 封裝:Reel |
| TEA2031A_07 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:COLOR TV EAST-WEST CORRECTION |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。