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| 型號： | GC1012A-CQ |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | DIGITAL TUNER CHIP |
| 中文描述： | 數(shù)字調諧器芯片 |
| 文件頁數(shù)： | 28/30頁 |
| 文件大?。?/td> | 186K |
| 代理商： | GC1012A-CQ |
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GRAYCHIP,INC.
- 23 -
FEBRUARY 18, 1998
GC1012A DIGITAL TUNER
DATA SHEET REV 0.1
This document contains information which may be changed at any time without notice
5.7
EXAMPLE RECEIVER ARCHITECTURE
An example digital receiver architecture using the GC1012A chip is shown in Figure 7.
Figure 7. Example Digital Receiver Architecture
The receiver contains an analog front end which downconverts up to 30MHz of radio spectrum to
1
. It also adjusts the gain of the signal so that it fills the dynamic range of the
an IF frequency around 15MHz
analog to digital converter (ADC). The ADC digitizes the signal using up to 12 bits of resolution at a sampling
rate up to 60 MHZ. The GC1012A chip tunes, downconverts, and narrowband filters desired frequencies
from within the 30 MHz band. The GC1012A output can either be converted back to analog or kept in its
digital state for subsequent signal processing.
1. Note that the HF spectrum (1 to 30MHz) can be digitized directly.
ANALOG
FRONT
END
ANALOG
TO
DIGITAL
CONVERTER
GC1012A
CHIP
￥
GAIN
￥
BANDLIMIT
30MHz OR LESS
TO
￥
DOWNCONVERT
￥
OUTPUT IS
CENTERED AROUND
15MHz
￥
DIGITIZES TO 8, 10
OR 12 BITS
￥
60 MHz SAMPLING
RATE
￥
TUNES TO
DESIRED
FREQUENCY
￥
NARROWBAND
FILTERS SIGNAL
￥
REDUCES
SAMPLE RATE
￥
CONVERTS BACK TO
ANALOG
SIGNAL
OUT
FROM
ANTENNAE
USER
INTERFACE
DIGITAL
TO
ANALOG
CONVERTER
(OPTIONAL)
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| GC1012A-PQ | 制造商:TI 制造商全稱:Texas Instruments 功能描述:DIGITAL TUNER CHIP |
| GC1012B | 制造商:TI 制造商全稱:Texas Instruments 功能描述:3.3V DIGITAL TUNER CHIP |
| GC1012B_07 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:3.3V DIGITAL TUNER CHIP |
| GC1012B-PQ | 功能描述:調諧器 Sgl channel WB DDC RoHS:否 制造商:NXP Semiconductors 功能: 噪聲系數(shù): 工作電源電壓: 最小工作溫度: 最大工作溫度: |
| GC1012B-PQA | 制造商:TI 制造商全稱:Texas Instruments 功能描述:3.3V DIGITAL TUNER CHIP |
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