ATR0797-6CP

ATR0797-6CP Datasheet

ATR0797

Part	Datasheet
ATR0797-6CP	ATR0797-6CP (pdf)

PDF Datasheet Preview
• Gain Control in 20-dB Steps • Very Low I/Q Amplitude and Phase Errors • High Input P1dB • Small and Optimized Package for High Reliability and Performance • Infrastructure Digital Communication Systems • GSM/Cellular Transceivers • ISM Band Transceivers • Fully Integrated Device with Reduced External Component Count Electrostatic sensitive device. Observe precautions for handling. 65 - 300 MHz SiGe IF Receiver/ Demodulator ATR0797 The ATR0797 is a multi-purpose demodulator RFIC. The silicon monolithic integrated circuit is designed with Atmel’s advanced SiGe technology. This demodulator is capable of both quadrature demodulation or direct IF output. Features include switchable gain control on a frequency range from 65 MHz to 300 MHz. The device performs a very low amplitude as well as phase error and allows high input P1dB. The ATR0797 targets a variety of system applications for communications including 3G wireless. Figure Block Diagram IFP 8 IFN 9 BBIP 1 BBIN 13 12 16 BBQP 15 BBQN LOP LON Pin Configuration Figure Pinning BBIN 1 BBIP 2 VCC 3 GC2 4 GC1 5 GND 6 VCC 7 IFP 8 16 BBQP 15 BBQN 14 VCC 13 LOP 12 LON 11 GND 10 VCC 9 IFN Pin Description BBIN BBIP BBQN BBQP Function Baseband I-axis negative output, self biasing Baseband I-axis positive output, self biasing 5 V power supply Gain control input, stage 2, 5 V CMOS levels Gain control input, stage 1, 5 V CMOS levels Ground 5 V power supply IF positive input, self biasing, AC-coupled IF negative input, self biasing, AC-coupled 5 V power supply Ground Local oscillator, negative input, self biasing, AC-coupled Local oscillator, positive input, self biasing, AC-coupled 5 V power supply Baseband Q-axis negative output, self biasing Baseband Q-axis positive output, self biasing 2 ATR0797 ATR0797 Product Description Atmel’s ATR0797 is a variable gain I-Q demodulator designed for use in receiver IF sections, that are typically existing in superheterodyne RF architectures. The ATR0797 has two gain stages that are independent of each other. These gain stages are broadband differential amplifiers each with a digital control pin to set the gain. Since the amplifiers have approximately the same gain, setting GC1 high and GC2 low results in approximately the same gain as setting GC1 low and GC2 high. Former setting offers better noise figures. The IF input is a differential input that has internal bias circuitry to set the common mode voltage. The use of blocking capacitors to facilitate AC coupling is highly recommended to avoid changing the common mode voltage. Either input may be driven single ended if the other input is connected to ground through an AC short such as a 1000 pF capacitor. This typically results in slightly lower input P1dB. The two matched mixers are configured with the quadrature LO generator to provide inphase and quadrature baseband outputs. The LO and IF ports offer a differential 50 impedance. The passives at these ports parallel L-R network and the package itself adds inductance that tends to degrade return loss. The ATR0797 features immunity from changes in LO power. The gain features change by less than dB over a 6 dB range of LO power. Also note the excellent I/Q balance, which typically falls within dB and 1 degree from 65 MHz to 300 MHz, and varies less than dB and degree over temperature -40°C to +85°C . The frequency response of the IF and LO ports is dominated by the L-R network on the input. When de-embedded, the gain and P1dB response is within dB from 65 MHz to 300 MHz. The figures in the datasheet illustrate a typical ATR0797’s performance with respect to temperature. Note that these numbers include the effect of the R-L network in the IF port. Evaluation board design and equipment constraints: Please take into account that the evaluation board uses baluns on the I/Q outputs, and these baluns limit the low frequency response of the device. For true baseband operation, the baluns should be removed, and the differential signals used directly. The 27 pF capacitor on the evaluation board is appropriate for lower frequencies. Absolute Maximum Ratings Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Ordering Information Extended Type Number ATR0797-6CPH Package Information Package PSSO16 Remarks Lead free 10 ATR0797 Atmel Corporation 2325 Orchard Parkway San Jose, CA 95131, USA Tel 1 408 441-0311 Fax 1 408 487-2600 Regional Headquarters 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 Tsimshatsui 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, USA Tel 1 408 441-0311 Fax 1 408 436-4314 Microcontrollers 2325 Orchard Parkway San Jose, CA 95131, USA 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, USA 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, USA 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 Literature Requests Disclaimer 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. Atmel Corporation All rights reserved. and combinations thereof are the registered trademarks of Atmel Corporation or its subsidiaries. Johnson Components is a trademark of Emerson Electric Co., is a registered trademark of Scientific Components, Würth is a registered trademark of Adolf Würth GmbH & Co. KG,. Other terms and product names may be the trademarks of others. Printed on recycled paper.

PDF Datasheet Preview

• Gain Control in 20-dB Steps
• Very Low I/Q Amplitude and Phase Errors
• High Input P1dB
• Small and Optimized Package for High Reliability and Performance
• Infrastructure Digital Communication Systems
• GSM/Cellular Transceivers
• ISM Band Transceivers
• Fully Integrated Device with Reduced External Component Count

Electrostatic sensitive device. Observe precautions for handling.
65 - 300 MHz SiGe IF Receiver/ Demodulator

ATR0797

The ATR0797 is a multi-purpose demodulator RFIC. The silicon monolithic integrated circuit is designed with Atmel’s advanced SiGe technology. This demodulator is capable of both quadrature demodulation or direct IF output. Features include switchable gain control on a frequency range from 65 MHz to 300 MHz. The device performs a very low amplitude as well as phase error and allows high input P1dB. The ATR0797 targets a variety of system applications for communications including 3G wireless.

Figure Block Diagram

IFP 8 IFN 9

BBIP 1 BBIN
13 12
16 BBQP 15 BBQN

LOP LON

Pin Configuration

Figure Pinning

BBIN 1 BBIP 2 VCC 3

GC2 4 GC1 5 GND 6 VCC 7 IFP 8
16 BBQP 15 BBQN 14 VCC 13 LOP 12 LON 11 GND 10 VCC
9 IFN

Pin Description

BBIN

BBIP

BBQN

BBQP

Function Baseband I-axis negative output, self biasing Baseband I-axis positive output, self biasing 5 V power supply Gain control input, stage 2, 5 V CMOS levels Gain control input, stage 1, 5 V CMOS levels Ground 5 V power supply IF positive input, self biasing, AC-coupled IF negative input, self biasing, AC-coupled 5 V power supply Ground Local oscillator, negative input, self biasing, AC-coupled Local oscillator, positive input, self biasing, AC-coupled 5 V power supply Baseband Q-axis negative output, self biasing Baseband Q-axis positive output, self biasing
2 ATR0797

ATR0797

Product Description

Atmel’s ATR0797 is a variable gain I-Q demodulator designed for use in receiver IF sections, that are typically existing in superheterodyne RF architectures.

The ATR0797 has two gain stages that are independent of each other. These gain stages are broadband differential amplifiers each with a digital control pin to set the gain. Since the amplifiers have approximately the same gain, setting GC1 high and GC2 low results in approximately the same gain as setting GC1 low and GC2 high. Former setting offers better noise figures.

The IF input is a differential input that has internal bias circuitry to set the common mode voltage. The use of blocking capacitors to facilitate AC coupling is highly recommended to avoid changing the common mode voltage. Either input may be driven single ended if the other input is connected to ground through an AC short such as a 1000 pF capacitor. This typically results in slightly lower input P1dB.

The two matched mixers are configured with the quadrature LO generator to provide inphase and quadrature baseband outputs.

The LO and IF ports offer a differential 50 impedance. The passives at these ports parallel L-R network and the package itself adds inductance that tends to degrade return loss.

The ATR0797 features immunity from changes in LO power. The gain features change by less than dB over a 6 dB range of LO power. Also note the excellent I/Q balance, which typically falls within dB and 1 degree from 65 MHz to 300 MHz, and varies less than dB and degree over temperature -40°C to +85°C .

The frequency response of the IF and LO ports is dominated by the L-R network on the input. When de-embedded, the gain and P1dB response is within dB from 65 MHz to 300 MHz.

The figures in the datasheet illustrate a typical ATR0797’s performance with respect to temperature. Note that these numbers include the effect of the R-L network in the IF port.

Evaluation board design and equipment constraints:

Please take into account that the evaluation board uses baluns on the I/Q outputs, and these baluns limit the low frequency response of the device. For true baseband operation, the baluns should be removed, and the differential signals used directly.

The 27 pF capacitor on the evaluation board is appropriate for lower frequencies.

Absolute Maximum Ratings

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
Ordering Information

Extended Type Number ATR0797-6CPH

Package Information

Package PSSO16

Remarks Lead free
10 ATR0797

Atmel Corporation
2325 Orchard Parkway San Jose, CA 95131, USA Tel 1 408 441-0311 Fax 1 408 487-2600

Regional Headquarters

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 Tsimshatsui 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, USA Tel 1 408 441-0311 Fax 1 408 436-4314

Microcontrollers 2325 Orchard Parkway San Jose, CA 95131, USA 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, USA 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, USA 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

Literature Requests

Disclaimer 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.

Atmel Corporation All rights reserved. and combinations thereof are the registered trademarks of Atmel Corporation or its subsidiaries. Johnson Components is a trademark of Emerson Electric Co., is a registered trademark of Scientific Components, Würth is a registered trademark of Adolf Würth GmbH & Co. KG,. 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 ATR0797-6CP Datasheet file may be downloaded here without warranties.

Datasheet ID: ATR0797-6CP 519282