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參數(shù)資料
| 型號： | TDA8012A |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Low power PLL FM demodulator for satellite TV receivers |
| 中文描述： | 低功耗鎖相環(huán)調(diào)頻解調(diào)器，衛(wèi)星電視接收機 |
| 文件頁數(shù)： | 4/16頁 |
| 文件大?。?/td> | 99K |
| 代理商： | TDA8012A |
1997 May 26
4
Philips Semiconductors
Product specification
Low power PLL FM demodulator for
satellite TV receivers
TDA8012AM
PINNING
SYMBOL
PIN
DESCRIPTION
CDF1
CDF2
PD+
PD
IFI1
IFI2
GND
V
CC
AGCO
V
th(AGC)
1
2
3
4
5
6
7
8
9
10
carrier detector filter 1 input
carrier detector filter 2 input
positive peak detector output
negative peak detector output
intermediate frequency input 1
intermediate frequency input 2
general ground
supply voltage
automatic gain control output
automatic gain control threshold
voltage input
baseband signal output
loop filter 1 input
loop filter 2 input
oscillator ground
oscillator tank circuit 1 input
oscillator tank circuit 2 input
automatic frequency control filter
input
key pulse input
automatic frequency control
/carrier detector output
automatic frequency control offset
input
VIDEO
LF1
LF2
OSCGND
VCO1
VCO2
AFCF
11
12
13
14
15
16
17
KEY
AFC/CDO
18
19
AFCOS
20
Fig.2 Pin configuration.
handbook, halfpage
TDA8012AM
MBH931
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
CDF1
CDF2
IFI1
IFI2
GND
AGCO
VCC
Vth(AGC)
PD
+
PD
AFCOS
VIDEO
LF1
LF2
OSCGND
VCO1
VCO2
AFCF
KEY
AFC/CDO
FUNCTIONAL DESCRIPTION
The TDA8012AM is a low power PLL FM demodulator
designed for use in satellite TV reception systems.
The demodulator is based on a PLL structure including a
fully balanced two-pin VCO. A high gain IF amplifier
ensures a high input sensitivity. The video output voltage
is supplied through a highly-linear video buffer with a low
output impedance. The centre frequency of the VCO and
the loop characteristics can be set by external components
(see Fig.4).
The circuit provides an AGC signal which is used to drive
a gain-controlled IF amplifier (TDA8011T or TDA8010AM)
for a stable PLL demodulation characteristic.
An analog AFC voltage is available. This signal fits in with
the input of the A/D converter port of the PLL frequency
synthesizer (TSA5055). The AFC function may be keyed
to address D2MAC systems.
The TDA8012AM includes a Carrier Detector (CD) used
for channel detection during search procedures.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TDA8012AM | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Low power PLL FM demodulator for satellite TV receivers |
| TDA8012M | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Low power PLL FM demodulator for satellite TV receivers |
| TDA8020 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Dual smart card interface |
| TDA8020HL | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Dual smart card interface |
| TDA8020HL/C1,118 | 功能描述:輸入/輸出控制器接口集成電路 SMART CARD INTERFACE RoHS:否 制造商:Silicon Labs 產(chǎn)品: 輸入/輸出端數(shù)量: 工作電源電壓: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-64 封裝:Tray |
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