 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| Features * Supply Voltage 5 V (Typically) * Very Low Power Consumption: 150 mW (Typically) for -1 dBm Output Level * Very Good Sideband Suppression by Means of Duty Cycle Regeneration of the LO * * * * * * Input Signal Phase Control Loop for Precise 90 Phase Shifting Power-down Mode Low LO Input Level: -10 dBm (Typically) 50-W Single-ended LO and RF Port LO Frequency from 100 MHz to 1 GHz SO16 Package01/03 Benefits * No External Components Required for Phase Shifting * Adjustment Free, Hence Saves Manufacturing Time * Only Three External Components Necessary, this Results in Cost and Board Space Saving 1000-MHz Quadrature Modulator U2790B Electrostatic sensitive device. Observe precautions for handling. Description The U2790B is a 1000-MHz quadrature modulator using Atmels advanced UHF process. It features a frequency range from 100 MHz up to 1000 MHz, low current consumption, and single-ended RF and LO ports. Adjustment-free application makes the direct converter suitable for all digital radio systems up to 1000 MHz, e.g., GSM, ADC, JDC. Figure 1. Block Diagram SPU BBAI BBAI 8 7 6 Power up PU 1 VS 5,4 LO i Phadj BBBi BBBI 12 15 16 9 10 Duty cycle regenerator Frequency doubler 0 90 90/control loop S RFO 3 2,11,13,14 GND Rev. 4583A-CELL-01/03 1 Pin Configuration Figure 2. Pinning SO16 PU GND RFO VS VS SPD BBAi BBAi 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 Phadj Phadj GND GND LOi GND BBBi BBBi Pin Description Pin 1 2, 11, 13, 14 3 4, 5 6 7 8 9 10 12 15, 16 Symbol PU GND RFo VS SPU BBAi BBAi BBBi BBBi LOi Phadj Function Power-up input Ground RF output Supply voltage Settling time power-up Baseband input A Baseband input A inverse Baseband input B Baseband input B inverse LO input Phase adjustment (not necessary for regular applications) 2 U2790B 4583A-CELL-01/03 U2790B 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 Unit V V C C Operating Range Parameters Supply voltage range Ambient temperature range Symbol VS Tamb Value 4.5 to 5.5 -40 to +85 Unit V C Thermal Resistance Parameters Junction ambient SO16 Symbol RthJA Value 110 Unit K/W Electrical Characteristics Test conditions (unless otherwise specified): VS = 5 V, Tamb = 25C, referred to test circuit, system impedance ZO = 50 W, fLO = 900 MHz, PLO = -10 dBm, VBBi = 1 Vpp differential. No. Parameters Supply voltage range Supply current Baseband Inputs Input-voltage range (differential) Input impedance (single ended) Input-frequency range (5) Internal bias voltage Temperature coefficient LO Input Frequency range Input level (1) Test Conditions Pin 4, 5 4, 5 7-8, 9-10 Symbol VS IS Min. 4.5 24 Typ. 30 Max. 5.5 37 Unit V mA Type* A A 1.1 1.2 2 2.1 2.2 2.3 2.4 2.5 3 3.1 3.2 3.3 VBBi ZBBi fBBi VBBb TCBB 0 2.35 1000 3.2 1500 mVpp kW D D D A D 250 2.5 0.1 2.65 <1 MHz V mV/C 12 fLOi PLOi ZiLO 50 - 12 - 10 50 1000 -5 MHz dBm W D D D Input impedance *) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter Notes: 1. The required LO level is a function of the LO frequency. 2. In reference to an RF output level -1 dBm and I/Q input level of 400 mVpp differential. 3. Sideband suppression is tested without connection at Pins 15 and 16. For higher requirements a potentiometer can be connected at these pins. 4. For Tamb = -30C to +85C and VS = 4.5 to 5.5 V. 5. By low impedance signal source. 3 4583A-CELL-01/03 Electrical Characteristics (Continued) Test conditions (unless otherwise specified): VS = 5 V, Tamb = 25C, referred to test circuit, system impedance ZO = 50 W, fLO = 900 MHz, PLO = -10 dBm, VBBi = 1 Vpp differential. No. Parameters Voltage standing wave ratio Duty cycle range RF Output Output level LO suppression (2) Sideband suppression (2, 3) Phase error (4) Amplitude error Noise floor VSWR 3rd-order baseband harmonic suppression RF harmonic suppression Power-up Mode Supply current Test Conditions Pin Symbol VSWRLO DCRLO Min. Typ. 1.4 Max. 2 0.6 Unit Type* D D 3.4 3.5 4 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 0.4 -5 30 32 35 30 -1 35 35 40 35 <1 < +0.25 -132 -144 1.6 35 45 3 fLO = 900 MHz fLO = 150 MHz fLO = 900 MHz fLO = 150 MHz PRFo LORFo SBSRFo Pe Ae +2 dBm dB dB deg. dB dBm/Hz B B B D D D D VBBi = 2 V, VBBi = 3 V VBBi = VBBi = 2.5 V NFL VSWRRF SBBH SRFH 2 dB D 4.9 5 5.1 35 dB D VPU 0.5 V, VPU = 1 V CSPU = 100 pF, CLO = 100 pF CRFo = 1 nF 4, 5 IPU tsPU 10 10 1 A D 5.2 6 6.1 6.2 Settling time Switching Voltage Power-on Power-up 6 to 3 s D 1 1 VPUon VPUdown 4 1 V V D D *) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter Notes: 1. The required LO level is a function of the LO frequency. 2. In reference to an RF output level -1 dBm and I/Q input level of 400 mVpp differential. 3. Sideband suppression is tested without connection at Pins 15 and 16. For higher requirements a potentiometer can be connected at these pins. 4. For Tamb = -30C to +85C and VS = 4.5 to 5.5 V. 5. By low impedance signal source. 4 U2790B 4583A-CELL-01/03 U2790B Diagrams Figure 3. Typical Single Sideband Output Spectrum at VS = 4.5 V and VS = 5.5 V, fLO = 900 MHz, PLO = -10 dBm, VBBI = 1 VPP (differential) Tamb = 25C Figure 4. Typical GMSK Output Spectrum 5 4583A-CELL-01/03 Figure 5. Demo Board Layout Figure 6. OIP3 versus Tamb, LO = 150 MHz, Level -20 dBm 16 12 IP3 (dBm) VBBI = 0.2 VPP 8 VBBi= 0.4 VPP 4 0 -40 -20 0 20 40 60 80 100 Temperature (C) 6 U2790B 4583A-CELL-01/03 U2790B Figure 7. OIP3 versus Tamb, LO = 900 MHz, Level - 10 dBm 12 10 VBBi = 0.4 VPP IP3 (dBm) 8 6 VBBi = 1.0 VPP 4 2 0 -40 -20 0 20 40 60 80 100 Temperature (C) Figure 8. Output Power versus Tamb 0.5 0 Output Power (dBm) -0,5 -1 -1.5 -2 -2.5 -40 -20 0 20 FLO = 150 MHz FLO = 900 MHz 40 60 80 100 Temperature (C) Figure 9. Supply Current versus Tamb 40 Supply Current (mA) 30 20 10 0 -40 -20 0 20 40 60 80 100 Temperature (C) 7 4583A-CELL-01/03 Figure 10. Typical S11 Frequency Response of the RF Output Figure 11. Typical VSWR Frequency Response of the RF Output 8 U2790B 4583A-CELL-01/03 U2790B Figure 12. Typical S11 Frequency Response of the LO Input Figure 13. Typical VSWR Frequency Response of the LO input 10 8 VSWR 6 4 2 0 100 LO Frequency (MHz) 1000 9 4583A-CELL-01/03 Figure 14. Typical Supply Current versus Temperature at VS = 5 V 60 Supply Current ( mA ) 50 40 30 20 10 -40 -20 0 20 40 60 80 100 Temperature (C) Figure 15. Typical Output Power versus LO-Frequency at Tamb = 25C, VBBI = 230 mVPP (differential) 0 Output Power ( dBm ) -5 0 200 400 600 800 1000 1200 1400 LO Frequency ( MHz ) Figure 16. Typical required VBBi Input Signal (differential) versus LO Frequency for PO = 0 dBm and PO = - 2 dBm 2 VBBi (differential) (VPP) 1 0 0 200 400 600 800 1000 1200 1400 LO Frequency (MHz) 10 U2790B 4583A-CELL-01/03 U2790B Figure 17. Typical useful LO Power Range versus LO Frequency at Tamb = 25C 0 -10 LO Power (dBm) -20 -30 -40 -50 0 200 400 600 800 1000 1200 1400 LO Frequency (MHz) Figure 18. Application Circuit CPU A inv 220n 8 SPU 6 1 PU 1n Power down A 220n BBAi BBAi 7 Power down 5,4 VS 1n VS 100n Baseband LO processing VS B 100p 10k LOi Phadj BBBi BBBi 220n 12 15 16 9 10 Duty cycle regenerator Frequency doubler 0 90 90/ control loop S 3 OUT RFO 220n 2,11,13,14 Binv GND 11 4583A-CELL-01/03 Figure 19. Demo Board Layout Application Notes Noise Floor and Settling Time In order to reduce noise on the power-up control input and improve the wide-off noise floor of the 900-MHz RF output signal, capacitor CPU should be connected from Pin 6 to ground in the shortest possible way. The settling time has to be considered for the system under design. For GSM applications, a value of CPU = 1 nF defines a settling time, tsPU, equal or less than 3 ms. This capacitance does not have any influence on the noise floor within the relevant GSM mask. For mobile applications the mask requirements can be achieved very easily without CPU. A significant improvement of the wide-off noise floor is obtainable with CPU greater than 100 nF. Such values are recommended for applications where the settling time is not critical such as in base stations. Coupling capacitors for LOi and RFO also have a certain impact on the settling time. The values used for the measurements are CLOi = 100 pF and CRFo = 1 nF. Baseband Coupling The U2790B-FP (SO16) has an integrated biasing network which allows AC coupling of the baseband signal at a low count of external components. The bias voltage is 2.5 V 0.15 V. Figure 19 shows the baseband input circuitry with a resistance of 3.2 kW for each asymmetric input. The internal DC offset between A and A, and B and B is typically < 1 mV with a maximum of + 3 mV. DC coupling is also possible with an external DC voltage of 2.5 0.15 V. 12 U2790B 4583A-CELL-01/03 U2790B Figure 20. Baseband Input Circuitry Mixer input stage 3.2 kW A , B A, B RF Output Circuitry LO Input Circuitry VS RFO 20 W 3 Figure 21. LO Input Circuitry LO 12 50 W 20 pF 13 4583A-CELL-01/03 Ordering Information Extended Type Number Package Remarks U2790B-MFP U2790B-MFPG3 SO16 SO16 Tube Taped and reeled Package Information Package SO16 Dimensions in mm 10.0 9.85 5.2 4.8 3.7 1.4 0.4 1.27 8.89 16 9 0.25 0.10 0.2 3.8 6.15 5.85 technical drawings according to DIN specifications 1 8 14 U2790B 4583A-CELL-01/03 Atmel Headquarters Corporate Headquarters 2325 Orchard Parkway San Jose, CA 95131 TEL 1(408) 441-0311 FAX 1(408) 487-2600 Atmel Operations Memory 2325 Orchard Parkway San Jose, CA 95131 TEL 1(408) 441-0311 FAX 1(408) 436-4314 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 Europe Atmel Sarl Route des Arsenaux 41 Case Postale 80 CH-1705 Fribourg Switzerland TEL (41) 26-426-5555 FAX (41) 26-426-5500 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 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 Asia Room 1219 Chinachem Golden Plaza 77 Mody Road Tsimhatsui East Kowloon Hong Kong TEL (852) 2721-9778 FAX (852) 2722-1369 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 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 literature@atmel.com Web Site http://www.atmel.com (c) Atmel Corporation 2003. 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 (R) is the registered trademark of Atmel. Other terms and product names may be the trademarks of others. Printed on recycled paper. 4583A-CELL-01/03 xM |
Price & Availability of U2790B
 |
|
|
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
| [Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
|
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |