DEMOBOARD-U2794B

DEMOBOARD-U2794B Datasheet

1000-MHz Quadrature Demodulator

Part	Datasheet
DEMOBOARD-U2794B	DEMOBOARD-U2794B (pdf)

Related Parts	Information
U2794B-MFSG3	U2794B-MFSG3
U2794B-MFS	U2794B-MFS

PDF Datasheet Preview
• Supply Voltage 5 V • Very Low Power Consumption 125 mW • Very Good Image Rejection By Means of Phase Control Loop for Precise 90° Phase Shifting • Duty-cycle Regeneration for Single-ended LO Input Signal • Low LO Input Level -10 dBm • LO Frequency from 70 MHz to 1 GHz • Power-down Mode • 25 dB Gain Control • Very Low I/Q Output DC Offset Voltage Typically < 5 mV • Low Current Consumption • Easy to Implement • Perfect Performance for Large Variety of Wireless Applications Electrostatic sensitive device. Observe precautions for handling. 1000-MHz Quadrature Demodulator U2794B The silicon monolithic integrated circuit U2794B is a quadrature demodulator manufactured using Atmel’s advanced UHF technology. This demodulator features a frequency range from 70 MHz to 1000 MHz, low current consumption, selectable gain, power-down mode and adjustment-free handling. The IC is suitable for direct conversion and image rejection applications in digital radio systems up to 1 GHz such as cellular radios, cordless telephones, cable TV and satellite TV systems. Figure Block Diagram 5,6 14 Power down OUTPUT 2I RFin 7 8 11 GC 90°Control loop 16,18 GND 0° 90° Frequency doubler Duty cycle 15 LO regenerator 17 13 PC 12 PCX OUTPUT 20 QX Pin Configuration Figure Pinning SSO20 I2 II 3 IIX 4 RFin 7 RFXin 8 QQX 10 20 QX 19 Q 18 GND 17 LOin 16 GND 15 LOXin 14 PU 13 PC 12 PCX 11 GC 2 U2794B Pin Description RFin RFXin LOXin LOin Function IX output I output II lowpass filter I IIX lowpass filter I Supply voltage Supply voltage RF input RFX input QQ lowpass filter Q QQX lowpass filter Q GC gain control PCX phase control PC phase control PU power up LOX input Ground LO input Ground Q output QX output U2794B Absolute Maximum Ratings Parameters Supply voltage Input voltage Junction temperature Storage-temperature range Symbol VS Vi Tj Tstg Value 6 0 to VS +125 -40 to +125 Ordering Information Extended Type Number U2794B-MFS U2794B-MFSG3 Package SSO20 Remarks Tube, MOQ 830 pcs Taped and reeled, MOQ 4000 pcs Package Information Package SSO20 Dimensions in mm technical drawings according to DIN specifications 14 U2794B Atmel Headquarters Corporate Headquarters 2325 Orchard Parkway San Jose, CA 95131 TEL 1 408 441-0311 FAX 1 408 487-2600 Europe Atmel Sarl Route des Arsenaux 41 Case Postale 80 CH-1705 Fribourg Switzerland TEL 41 26-426-5555 FAX 41 26-426-5500 Asia Room 1219 Chinachem Golden Plaza 77 Mody Road Tsimhatsui East Kowloon Hong Kong TEL 852 2721-9778 FAX 852 2722-1369 Japan 9F, Tonetsu Shinkawa Bldg. 1-24-8 Shinkawa Chuo-ku, Tokyo 104-0033 Japan TEL 81 3-3523-3551 FAX 81 3-3523-7581 Atmel Operations Memory 2325 Orchard Parkway San Jose, CA 95131 TEL 1 408 441-0311 FAX 1 408 436-4314 Microcontrollers 2325 Orchard Parkway San Jose, CA 95131 TEL 1 408 441-0311 FAX 1 408 436-4314 La Chantrerie BP 70602 44306 Nantes Cedex 3, France TEL 33 2-40-18-18-18 FAX 33 2-40-18-19-60 ASIC/ASSP/Smart Cards Zone Industrielle 13106 Rousset Cedex, France TEL 33 4-42-53-60-00 FAX 33 4-42-53-60-01 1150 East Cheyenne Mtn. Blvd. Colorado Springs, CO 80906 TEL 1 719 576-3300 FAX 1 719 540-1759 Scottish Enterprise Technology Park Maxwell Building East Kilbride G75 0QR, Scotland TEL 44 1355-803-000 FAX 44 1355-242-743 RF/Automotive Theresienstrasse 2 Postfach 3535 74025 Heilbronn, Germany TEL 49 71-31-67-0 FAX 49 71-31-67-2340 1150 East Cheyenne Mtn. Blvd. Colorado Springs, CO 80906 TEL 1 719 576-3300 FAX 1 719 540-1759 Biometrics/Imaging/Hi-Rel MPU/ High Speed Converters/RF Datacom Avenue de Rochepleine BP 123 38521 Saint-Egreve Cedex, France TEL 33 4-76-58-30-00 FAX 33 4-76-58-34-80 e-mail Web Site Atmel Corporation Atmel Corporation makes no warranty for the use of its products, other than those expressly contained in the Company’s standard warranty which is detailed in Atmel’s Terms and Conditions located on the Company’s web site. The Company assumes no responsibility for any errors which may appear in this document, reserves the right to change devices or specifications detailed herein at any time without notice, and does not make any commitment to update the information contained herein. No licenses to patents or other intellectual property of Atmel are granted by the Company in connection with the sale of Atmel products, expressly or by implication. Atmel’s products are not authorized for use as critical components in life support devices or systems. is the registered trademark of Atmel. Other terms and product names may be the trademarks of others. Printed on recycled paper.

PDF Datasheet Preview

• Supply Voltage 5 V
• Very Low Power Consumption 125 mW
• Very Good Image Rejection By Means of Phase Control Loop for Precise 90° Phase

Shifting
• Duty-cycle Regeneration for Single-ended LO Input Signal
• Low LO Input Level -10 dBm
• LO Frequency from 70 MHz to 1 GHz
• Power-down Mode
• 25 dB Gain Control
• Very Low I/Q Output DC Offset Voltage Typically < 5 mV
• Low Current Consumption
• Easy to Implement
• Perfect Performance for Large Variety of Wireless Applications

Electrostatic sensitive device. Observe precautions for handling.
1000-MHz Quadrature Demodulator

U2794B

The silicon monolithic integrated circuit U2794B is a quadrature demodulator manufactured using Atmel’s advanced UHF technology. This demodulator features a frequency range from 70 MHz to 1000 MHz, low current consumption, selectable gain, power-down mode and adjustment-free handling. The IC is suitable for direct conversion and image rejection applications in digital radio systems up to 1 GHz such as cellular radios, cordless telephones, cable TV and satellite TV systems.

Figure Block Diagram
5,6 14

Power down

OUTPUT 2I

RFin 7 8
11 GC
90°Control loop
16,18 GND
0° 90°

Frequency doubler

Duty cycle 15 LO regenerator 17
13 PC 12 PCX

OUTPUT 20 QX

Pin Configuration

Figure Pinning SSO20

I2 II 3

IIX 4

RFin 7

RFXin 8

QQX 10
20 QX 19 Q 18 GND 17 LOin 16 GND 15 LOXin 14 PU 13 PC 12 PCX 11 GC
2 U2794B

Pin Description

RFin

RFXin

LOXin

LOin

Function IX output I output II lowpass filter I IIX lowpass filter I Supply voltage Supply voltage RF input RFX input QQ lowpass filter Q QQX lowpass filter Q GC gain control PCX phase control PC phase control PU power up LOX input Ground LO input Ground Q output QX output

U2794B

Absolute Maximum Ratings

Parameters Supply voltage Input voltage Junction temperature Storage-temperature range

Symbol VS Vi Tj Tstg

Value 6
0 to VS +125 -40 to +125
Ordering Information

Extended Type Number U2794B-MFS U2794B-MFSG3

Package SSO20

Remarks Tube, MOQ 830 pcs Taped and reeled, MOQ 4000 pcs

Package Information

Package SSO20

Dimensions in mm
technical drawings according to DIN specifications
14 U2794B

Atmel Headquarters

Corporate Headquarters 2325 Orchard Parkway San Jose, CA 95131 TEL 1 408 441-0311 FAX 1 408 487-2600

Europe Atmel Sarl Route des Arsenaux 41 Case Postale 80 CH-1705 Fribourg Switzerland TEL 41 26-426-5555 FAX 41 26-426-5500

Asia Room 1219 Chinachem Golden Plaza 77 Mody Road Tsimhatsui East Kowloon Hong Kong TEL 852 2721-9778 FAX 852 2722-1369

Japan 9F, Tonetsu Shinkawa Bldg. 1-24-8 Shinkawa Chuo-ku, Tokyo 104-0033 Japan TEL 81 3-3523-3551 FAX 81 3-3523-7581

Atmel Operations

Memory 2325 Orchard Parkway San Jose, CA 95131 TEL 1 408 441-0311 FAX 1 408 436-4314

Microcontrollers 2325 Orchard Parkway San Jose, CA 95131 TEL 1 408 441-0311 FAX 1 408 436-4314

La Chantrerie BP 70602 44306 Nantes Cedex 3, France TEL 33 2-40-18-18-18 FAX 33 2-40-18-19-60

ASIC/ASSP/Smart Cards Zone Industrielle 13106 Rousset Cedex, France TEL 33 4-42-53-60-00 FAX 33 4-42-53-60-01
1150 East Cheyenne Mtn. Blvd. Colorado Springs, CO 80906 TEL 1 719 576-3300 FAX 1 719 540-1759

Scottish Enterprise Technology Park Maxwell Building East Kilbride G75 0QR, Scotland TEL 44 1355-803-000 FAX 44 1355-242-743

RF/Automotive Theresienstrasse 2 Postfach 3535 74025 Heilbronn, Germany TEL 49 71-31-67-0 FAX 49 71-31-67-2340 1150 East Cheyenne Mtn. Blvd. Colorado Springs, CO 80906 TEL 1 719 576-3300 FAX 1 719 540-1759

Biometrics/Imaging/Hi-Rel MPU/ High Speed Converters/RF Datacom

Avenue de Rochepleine BP 123 38521 Saint-Egreve Cedex, France TEL 33 4-76-58-30-00 FAX 33 4-76-58-34-80
e-mail Web Site

Atmel Corporation Atmel Corporation makes no warranty for the use of its products, other than those expressly contained in the Company’s standard warranty which is detailed in Atmel’s Terms and Conditions located on the Company’s web site. The Company assumes no responsibility for any errors which may appear in this document, reserves the right to change devices or specifications detailed herein at any time without notice, and does not make any commitment to update the information contained herein. No licenses to patents or other intellectual property of Atmel are granted by the Company in connection with the sale of Atmel products, expressly or by implication. Atmel’s products are not authorized for use as critical components in life support devices or systems.
is the registered trademark of Atmel. Other terms and product names may be the trademarks of others.

Printed on recycled paper.

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived DEMOBOARD-U2794B Datasheet file may be downloaded here without warranties.

Datasheet ID: DEMOBOARD-U2794B 519476