參數(shù)資料
型號: ACD2203S8GP0
廠商: ANADIGICS INC
元件分類: 衰減器
英文描述: CATV/TV/Video Downconverter with Dual Synthesizer
中文描述: RF/MICROWAVE DOWN CONVERTER
封裝: S8, MO-137AF, SSOP-28
文件頁數(shù): 1/24頁
文件大?。?/td> 618K
代理商: ACD2203S8GP0
12/2003
ACD2203
CATV/TV/Video Downconverter
with Dual Synthesizer
PRELIMINARY DATA SHEET - Rev 1.3
Figure 1: Downconverter Block Diagram
FEATURES
Integrated Downconverter
Integrated Dual Synthesizer
256 QAM Compatibility
Single +5 V Power Supply Operation
Low Power Consumption: <0.6 W
Low Noise Figure: 8 dB
High Conversion Gain: 10 dB
Low Distortion: -53 dBc
Two-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 ACD2203 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 and dual synthesizer.
The specifications meet the requirements of
CATV/TV/Video and Cable Modem Data applications.
The ACD2203 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 a 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
RF2: 64/65
Prescaler
18 Bit RF2
N Counter
RF2
Phase
Detector
RF2
Charge
Pump
RF1
Phase
Detector
RF1
Charge
Pump
15 Bit RF2
R Counter
15 Bit RF1
R Counter
18 Bit RF1
N Counter
RF1: 64/65
Prescaler
Oscillator
24 Bit
Data Register
CP
U
CP
D
RF
D
REF
IN
REF
OUT
RF
U
Clock
Data
AS
2 Bit
A/D
V
IF
+
IF
OUT+
OSC
OUT
T
CKT
RF
IN
+
Phase Splitter
Low Noise
VGA
Mixer
RF
IN
-
V
IF
+
IF
OUT-
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