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

GND

N/C

GND

RF

IN

I

SET

GND

N/C

+5V

T

CKT

GND

OSC

OUT

GND

IF