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| 型號(hào)： | TUA1030 |
| 廠商： | INFINEON TECHNOLOGIES AG |
| 元件分類： | 調(diào)諧器 |
| 英文描述： | 3-BAND, VIDEO TUNER, PDSO24 |
| 封裝： | PLASTIC, TSSOP-24 |
| 文件頁(yè)數(shù)： | 6/33頁(yè) |
| 文件大?。?/td> | 575K |
| 代理商： | TUA1030 |
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Functional Description
3 - 14
TUA1030
preliminary
Wireless Components
Confidential
Specification, January 2002
3.3
Block Diagram
Block Diag
Figure 3-1
Block Diagram
3.4
Circuit Description
The TUA1030 is a mixer/oscillator/IF-amplifier IC suitable for 3-band tuners.
The device includes three balanced mixers (one mixer with an unbalanced high-
impedance input and two mixers with a balanced low-impedance input), two 2-
pin asymmetrical oscillators for the LOW and the MID band, one 4-pin symmet-
rical oscillator for the HIGH band, an IF amplifier, a reference voltage, and a
band switch. Two pins are available at the mixer output / IF amplifier input to
enable IF filtering for improved signal handling.
The LOW, MID and HIGH bands are selected and switched by the SW0 and
SW1 inputs
RF Input
HIGH
RF Input
LOW
Mixer
HIGH
Mixer
LOW
Oscillator
LOW
Oscillator
MID
Oscillator
HIGH
IF
Amp
P0
V
CC
P1
P0
P0.P1
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
OSCHIGHOUT
HIGHIN
LOWIN
MIXOUT
RFGND
MIXOUT
LO
SW0
SW1
Electronic
Bandswitch
Local
Oscillator
Amp
RF Input
MID
Mixer
MID
P1
P0.P1
P0, P1, P0.P1
MIDIN
OSCLOWOUT
OSCLOWIN
OSCGND
OSCMIDIN
OSCMIDOUT
OSCHIGHIN
OSCHIGHOUT
OSCHIGHIN
VCC
IFGND
IFOUT
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