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參數(shù)資料
| 型號： | TDA4445B |
| 英文描述： | Quasi Parallel Sound Processing with Quadrature Intercarrier Demodulator |
| 中文描述： | 準并行聲音處理與正交載波解調器 |
| 文件頁數(shù)： | 2/8頁 |
| 文件大?。?/td> | 117K |
| 代理商： | TDA4445B |
TELEFUNKEN Semiconductors
TDA4445A/TDA4445B
Rev. A1: 14.09.1995
2 (8)
Pin Description
Pin
1–16
3
8–9
11
12
13
2, 4,
7, 10,
14, 15
Symbol
Function
IF input
If AGC time constant
Tuned circuit
Supply voltage
Sound-IF-output
Ground
not connected
TDA4445B additional
Pin
5
6
Symbol
Function
Average capacitor
AF output
Circuit Description
This circuit includes the following functions
Three symmetrical and gain controlled wide band
amplifier stages, which are extremely stable by quasi
DC coupling without feedback
Averaged AGC with discharge control circuit
AGC voltage generator
Quasi parallel sound operation
High phase accuracy of the carrier signal processing,
independent from AM
Linear quadrature demodulator
Sound–IF–amplifier stage with impedance converter
AM–Demodulation (TDA4445B only)
Carrier controlled demodulator
Audio frequency stage with impedance converter
Averaged low pass AGC
Absolute Maximum Ratings
Reference point pin 3, unless otherwise specified
Parameters
Symbol
V
S
I
S
Value
10 ... 15
70
Unit
V
mA
Supply voltage range
Supply current
External voltages
TDA4445A, B
Pin 11
Pin 11
Pin 3
Pin 12
Pin 5, 6
TDA4445B only
Power dissipation in soldered position
Junction temperature
Ambient temperature range
Storage temperature range
V
ext
12
8
8
1
125
V
P
tot
T
j
T
amb
T
stg
W
°
C
°
C
°
C
–25 to +70
–25 to +125
Thermal Resistance
Parameters
Symbol
R
thJA
Value
60
Unit
K/W
Junction ambient
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相關代理商/技術參數(shù) |
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|---|---|
| TDA4452 | 制造商:TEMIC 制造商全稱:TEMIC Semiconductors 功能描述:Video IF Amplifier for Multistandard TV Receiver and VTR Appliances |
| TDA4453 | 制造商:TEMIC 制造商全稱:TEMIC Semiconductors 功能描述:Video IF Amplifier for Multistandard TV Receiver and VTR Appliances |
| TDA4453BG | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:TELEFUNK ELECTRONIC CREATIVE TECHNOLOGIEN U2200B-FP |
| TDA4454 | 制造商:TEMIC 制造商全稱:TEMIC Semiconductors 功能描述:Multistandard VIF Amplifier and PLL Demodulator |
| TDA4455 | 制造商:TEMIC 制造商全稱:TEMIC Semiconductors 功能描述:Multistandard VIF Amplifier and PLL Demodulator |
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