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ACD2206 Datasheet

  • ACD2206

  • CATV/TV/VIDEO DOWNCONVERTER WITH DUAL SYNTHESIZER

  • 20頁(yè)

  • ANADIGICS   ANADIGICS

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CATV/TV/Video Downconverter
with Dual Synthesizer
FEATURES
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ACD2206
PRELIMINARY DATA SHEET - Rev 1.0
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 擄C to +85 擄C
APPLICATIONS
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Set Top Boxes
CATV Video Tuners
Digital TV Tuners
CATV Data Tuners
Cable Modems
S8 Package
28 Pin SSOP
PRODUCT DESCRIPTION
The ACD2206 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 ACD2206 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.
RF
D
RF2: 64/65
Prescaler
18 Bit RF2
N Counter
RF2
Phase
Detector
RF2
Charge
Pump
CP
D
RF
IN
+
RF
IN
-
Low Noise
VGA
V
IF
+IF
OUT-
REF
IN
REF
OUT
15 Bit RF2
R Counter
V
IF
+IF
OUT+
Mixer
Oscillator
15 Bit RF1
R Counter
Phase Splitter
RF
U
RF1: 64/65
Prescaler
18 Bit RF1
N Counter
RF1
Phase
Detector
RF1
Charge
Pump
CP
U
T
CKT
OSC
OUT
Clock
Data
Enable
22 Bit
Data Registar
Figure 1: Downconverter Block Diagram
10/2003
Figure 2: Dual Synthesizer Block Diagram

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