05/2005
ACD0900
VHF/UHF CATV/TV Tuner
Downconverter
Data Sheet - Rev 2.2
Figure 1: Functional Block Diagram
FEATURES
• Integrated Monolithic Downconverter
8 dB Noise Figure
10 dB Conversion Gain
High Linearity
Small Size
Low Cost
High Reliability
RoHS-Compliant Package Option
S3 Package
Modified 16 Pin SOIC
PRODUCT DESCRIPTION
The ACD0900 MMIC is a high performance
downconverter fabricated entirely in GaAs. It is
designed for use as the second conversion stage
in double-conversion tuners and cable modems,
downconverting 900 -1200 MHz RF inputs to a fixed
IF of 35 - 150 MHz (depending on LO frequency).
The IC incorporates a low noise amplifier, high
linearity double balanced mixer, phase splitter and
oscillator in a modified SOIC 16 lead surface mount
package. The high degree of functionality allows
tuner manufactures to reduce size and cost by
lowering the component count and decreasing the
amount of production alignment steps, while
significantly improving performance and reliability.
PHASE
8
5
6
7
SPLITTER
OSC
2
3
4
1
MXR
9
12
11
10
15
14
13
16
LOW NOISE
AMP.
IF
1,
+5V
GND
N/C
GND
RF
IN
I
SET
GND N/C
+5V
T
CKT
GND
OSC
OUT
GND
IF
2,
+5V