參數(shù)資料
型號(hào)： ACD2204S&P0
廠商： ANADIGICS, Inc.
英文描述： CATV/TV/Video Downconverter with Dual Synthesizer
中文描述： 有線電視/電視/視頻變頻器雙合成
文件頁(yè)數(shù)： 1/20頁(yè)
文件大小： 350K
代理商： ACD2204S&P0
04/2003
ACD2204
CATV/TV/Video Downconverter
with Dual Synthesizer
PRELIMINARY DATA SHEET - Rev 1.0
Figure 1: Downconverter Block Diagram
FEATURES
Integrated Downconverter
Integrated Dual Synthesizer
256 QAM Compatibility
Single +5 V Power Supply Operation
Low Noise Figure: 8 dB
High Conversion Gain: 31 dB
Low Distortion: -53 dBc
Three-Wire Interface
Small Size
-40
°
C to +85
°
C
APPLICATIONS
Set Top Boxes
CATV Video Tuners
Digital TV Tuners
CATV Data Tuners
Cable Modems
S8 Package
28 Pin SSOP
PRODUCT DESCRIPTION
The ACD2204 uses both GaAs and Si technology
to provide the downconverter and dual synthesizer
functions in a double conversion tuner gain block,
local oscillator, balanced mixer, IF Amplifier, and
dual synthesizer. The specifications meet the
requirements of CATV/TV/Video and Cable Modem
Data applications. The ACD2204 is supplied in a 28
lead SSOP package and requires a single +5 V
supply voltage. The IC is well suited for applications
where small size, low cost, low auxiliary parts count,
and no-compromise performance is important. It
provides for cost reduction by lowering the
component and packaged IC count and decreasing
the amount of labor-intensive production alignment
steps, while significantly improving performance
and reliability.
Figure 2: Dual Synthesizer Block Diagram
V
IF
+
IF
OUT+
OSC
OUT
T
CKT
RF
IN
+
Phase Splitter
Low Noise
VGA
Mixer
RF
IN
-
V
IF
+
IF
OUT-
RF2: 64/65
Prescaler
18 Bit RF2
N C ounter
RF2
Phase
Detector
RF 2
Charge
Pump
RF1
Phase
Detector
RF1
Charge
Pump
15 Bit RF2
R C ounter
15 Bit RF1
R C ounter
18 Bit RF1
N C ounter
RF1: 64/65
Prescaler
Oscillato r
22 Bit
Data Registar
CP
U
CP
D
RF
D
REF
IN
REF
OUT
RF
U
Clock
Data
Enabl e
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