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RF2690PCBA

W-CDMA RECEIVE AGC AND DEMODULATOR

RF Micro Devices 

Preliminary

7

Typical Applications

• W-CDMA Systems

RF2690

W-CDMA RECEIVE AGC

AND DEMODULATOR

Product Description

1.00

0.90

4.00

sq.

The RF2690 is an integrated complete IF AGC amplifier

0.60

and quadrature demodulator designed for the receive

0.24 typ

0.65

0.30

4 PLCS

section of W-CDMA applications. It is designed to amplify

received IF signals, while providing 70dB of gain control

3 0.20

range, a total of 90dB gain, and demodulation to base-

2.10

sq.

band I and Q signals. This circuit is designed as part of

RFMD’s single mode W-CDMA chipset, which includes

12°

0.75

the RF9678 as modulator and IF AGC and the RF2638 as

MAX

0.50

7

0.23

upconvertor. The IC is manufactured on an advanced

0.05

Dimensions in mm.

0.50

0.13

4 PLCS

25GHz FT Silicon Bi-CMOS process, and is packaged in

NOTES:

Note orientation of package.

a 20-pin, 4mmx4mm, leadless chip carrier.

1 Shaded lead is Pin 1.

2 Pin 1 identifier must exist on top surface of package by identification

mark or feature on the package body. Exact shape and size is optional.

3 Dimension applies to plated terminal: to be measured between 0.02 mm

and 0.25 mm from terminal end.

4 Package Warpage: 0.05 mm max.

5 Die Thickness Allowable: 0.305 mm max.

Optimum Technology Matching® Applied

Si BJT

üSi Bi-CMOS

GaAs HBT

SiGe HBT

GaAs MESFET

Si CMOS

NC 2

NC 3

W-CDMA IN+ 4

W-CDMA IN- 5

6

20 1 17 18

Gain

Control

I/Q

Cal

Div

4

Mode Control

& Biasing

8

7

9

10

14 I OUT+

13 I OUT-

15 ENCAL

16 FCLK

12 Q OUT+

11 Q OUT-

19 VREF2V

Package Style: LCC, 20-Pin, 4x4

Features

• Digitally Controlled Power Down Mode

• 2.7V to 3.3V Operation

• Digital LO Quadrature Divide-by-4

• IF AGC Amp with 70dB Gain Control

• 80dB Maximum Voltage Gain

Ordering Information

RF2690

W-CDMA Receive AGC and Demodulator

RF2690 PCBA Fully Assembled Evaluation Board

Functional Block Diagram

RF Micro Devices, Inc.

7628 Thorndike Road

Greensboro, NC 27409, USA

Tel (336) 664 1233

Fax (336) 664 0454

http://www.rfmd.com

Rev A4 010918

7-39

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