View U2793B06_4371428.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

Features
* * * * * * * * *
Supply Voltage: 5V Low Power Consumption: 15 mA/5V Output Level and Spurious Products Adjustable (Optional) Excellent 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: -15 dBm 50- Single-ended LO and RF Port LO Frequency Range of 30 MHz to 300 MHz
Benefits
* Low Current Consumption * Few External Components Result in Cost and Board Space Saving * Adjustment Free Hence Saves Time
300-MHz Quadrature Modulator U2793B
Electrostatic sensitive device. Observe precautions for handling.
1. Description
The IC U2793B is a 300-MHz quadrature modulator that uses Atmel(R)'s advanced UHF process. It features low current consumption, single-ended RF ports and adjustment-free application, which makes the device suitable for all digital radio systems, e.g., GSM, PCN, JDC and WLAN. As an option, output level and spurious products are adjustable at pins 19 and 20. In conjunction with Atmel's U2795B mixer, an up-converter up to 2 GHz can be realized. Figure 1-1. Block Diagram
SPD BBAi BBAi 10 9 8 PU 1
LOi LOi
14 Duty cycle 15 regenerator Frequency doubler 0 90 90 control loop
Power 6,7 VS up VRef 13 19 LP2 LP1 20 RFo 4
BBBi BBBi
11 12 3,16,17,18 GND
2 5
ACGND ACGND
4651E-CELL-07/06
2. Pin Configuration
Figure 2-1. Pinning SSO20
PU ACGND GND RFO ACGND VS VS SPU BBAI BBAI 1 2 3 4 5 U2793B 6 7 8 9 10 15 14 13 12 11 LOI LOI VREF BBBI BBBI 20 19 18 17 16 LP1 LP2 GND GND GND
2
U2793B
4651E-CELL-07/06
U2793B
Table 2-1.
Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Pin Description
Symbol PU ACGND GND RFO ACGND VS VS SPU BBAI BBAI BBBI BBBI VREF LOI LOI GND GND GND LP2 LP1 Function Power-up input AC ground Ground RF output AC ground Supply voltage Supply voltage Settling time power-up Baseband input A Baseband input A inverse Baseband input B Baseband input B inverse Reference voltage (2.5V) Input LO Input LO inverse, typically grounded Ground Ground Ground Output low pass and power control Output low pass and power control
3
4651E-CELL-07/06
3. 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. Parameters Supply voltage Input voltage Junction temperature Storage temperature range Symbol VS Vi Tj TStg Value 6 0 to VS 125 -55 to +125 Unit V V C C
4. Thermal Resistance
Parameters Junction ambient SSO20 Symbol RthJA Value 140 Unit K/W
5. Operating Range
Parameters Supply voltage Ambient temperature range Symbol VS Tamb Value 4.5 to 5.5 -40 to +85 Unit V C
6. Electrical Characteristics
Test conditions (unless otherwise specified); VS = 5V, Tamb = 25C, referred to test circuit. System impedance Zo = 50, fLO =150 MHz, PLO = -15 dBm, VBBi = 1.0 Vpp, differential No. 1.1 1.2 2 2.1 2.2 2.3 2.4 3 3.1 3.2 3.3 3.4 Parameters Supply voltage range Supply current Baseband Inputs, Pin 9-10, 11-12 Input-voltage range (differential) Input impedance Input-frequency range Input voltage, common mode LO Input, Pins 14 and 15 Frequency range Input level(1) Input impedance Voltage standing wave ratio fLOi PLOi ZiLO VSWRLO DCRLO 0.4 30 -15 (2) 3.5 0.6 300 -5 MHz dBm D D D D D VBBi ZBBi fBBi 0 2.5 1000 30 50 1500 mVpp k MHz V D D D Test Conditions Pin 6, 7 6, 7 Symbol VS IS Min. 4.5 Typ. 5 15 Max. 5.5 Unit V mA Type* A A
3.5 Duty-cycle range Notes: 1. Required LO level is a function of the LO frequency.
2. The LO input impedance is consisting of a 50 resistor in series with a 15 pF capacitor. 3. With the pins 19 and 20 spurious performance especially for low frequency application can be improved by adding a chip capacitor between LP1 and LP2. In conjunction with a parallel resistor the output level can be adjusted to the following mixer stage without degration of LO suppression and noise performance which would decrease if the I/Q input level is reduced. 4. For Tamb = -40C to +85C and VS = 4.5V to 5.5V
4
U2793B
4651E-CELL-07/06
U2793B
6. Electrical Characteristics (Continued)
Test conditions (unless otherwise specified); VS = 5V, Tamb = 25C, referred to test circuit. System impedance Zo = 50, fLO =150 MHz, PLO = -15 dBm, VBBi = 1.0 Vpp, differential (Continued) No. 4 Parameters RF Output, Pin 4 fLO = 150 MHz VBBi = 1 Vpp, differential fLO = 50 MHz VBBi = 0.3 Vpp, differential PLO = -20 dBM
(3)
Test Conditions
Pin
Symbol
Min. -3
Typ. -1 0
Max. +2
Unit
Type*
4.1
Output level
PRFo LORFO VSWRRF SBSRFo Pe Ae 35 32
dBm
A/B
4.2 4.3 4.4 4.5 4.6 4.7 5 5.1 5.2 6 6.1 7 7.1
LO suppression Voltage standing wave ratio Sideband suppression Phase error(4) Amplitude error Noise floor Power-up Mode Supply current Settling time Switching Voltage, Pin 1 Power on Reference Voltage, Pin 13 Voltage range
45 1.4 45 <1 < 0.25 -137 -143 2
dB dB deg dB dBm/Hz
A D A D D D
VBBi = 2V, VBBi = 3V VBBi = VBBi = 2.5V VPU 0.5V, pins 6, 7 VPU = 1V Pins 1 to 4, CSPU = 100 pF CLO = 100 pF, CRFo = 1 nF
NFL
IPU tSPU
10 10
1
A s
D D
VPUON VRef ZoRef
4 2.375 2.5 30 2.625
V V
D A D
7.2 Output impedance Notes: 1. Required LO level is a function of the LO frequency.
2. The LO input impedance is consisting of a 50 resistor in series with a 15 pF capacitor. 3. With the pins 19 and 20 spurious performance especially for low frequency application can be improved by adding a chip capacitor between LP1 and LP2. In conjunction with a parallel resistor the output level can be adjusted to the following mixer stage without degration of LO suppression and noise performance which would decrease if the I/Q input level is reduced. 4. For Tamb = -40C to +85C and VS = 4.5V to 5.5V
5
4651E-CELL-07/06
7. Diagrams
Figure 7-1. Reference Voltage versus Tamb
2.57 2.56 2.55
VRef (V)
2.54 2.53 2.52 2.51 2.5 -40 0 40 Temperature (C) 80 120
Figure 7-2.
OIP3 versus Tamb, LO = 150 MHz, Level -10 dBm
8
6
IP3 (dBm)
4
2
0 -40 0 40 Temperature (C) 80 120
Figure 7-3.
Supply Current versus Tamb
20
16
Supply Current (mA)
12
8
4
0 -40 0 40 Temperature (C) 80 120
6
U2793B
4651E-CELL-07/06
U2793B
Figure 7-4. Recommended LO Power Range versus LO Frequency at Tamb = 25 C
0
-10
PLO (dBm)
-20
-30
-40 0 50 100 150 200 250 300 fLO (MHz)
Figure 7-5.
Output Power versus Tamb
0
-0.4
Output Power (dBm)
-0.8
-1.2
-1.6
-2 -40 0 40 Temperature (C) 80 120
Figure 7-6.
Typical Output Power versus LO Frequency at Tamb = 25 C, VBBi = 250 mV (Differential)
5 1.2 Vpp 0 -5 -10 1.0 Vpp 800 mVpp
Pout (dBm)
-15 -20 -25 -30 -35 0 50 100 150 200 250 300 100 mVpp 200 mVpp 400 mVpp 600 mVpp
FLO (MHz)
7
4651E-CELL-07/06
Figure 7-7.
Typical Required VBBi Input Signal (Differential) versus LO Frequency for PO = 1 dBm and PO = -3 dBm
2000 1800 1600 -5 dBm 1400 1200 1000 800 600 400 200 0 0 50 100 150 200 250 300 -1 dBm -3 dBm
Pout (dBm)
FLO (MHz)
8
U2793B
4651E-CELL-07/06
U2793B
8. Evaluation Board Drawings
Figure 8-1. Evaluation Board Circuitry
C1 1 C2 2 19 20 C9 R1
L1 PU
3 C3 OUT C4 5 U2793B L2 C5 6 4
18
17
16 C7 15
VS
7
14 C8
LO
8 C6 9
13
12
10
11
A
Ainv
GND
B
VRef
Binv
Part List C1, C2, C3, C4, C6 C7, C8 C5 C9, R1 = = = = = = 1 nF 100 pF 100 nF 1 pF to 10 pF 50- Microstrip optional
The above listed components result in a PD settling time of <20 s. The use of other component values will require consideration for time requirements in burst-mode applications.
9
4651E-CELL-07/06
Figure 8-2.
PCB Layout Evaluation Board
10
U2793B
4651E-CELL-07/06
U2793B
9. Application Circuits
Bias network for AC-coupled baseband inputs (VBA, VBB). R1 = 2.5 k, R2 10 k for 35 dB LO suppression which is in reference to < 2 mV input offset. Figure 9-1. Application Circuit with AC-coupled Baseband Inputs
R1 VRef R2 10 BBAi BBAi LOi 14 LOi 15 Duty cycle regenerator Frequency doubler 0 90 90 control loop 9 13 1n PU 1 Power up 6,7 VS 8 SPU 19 LP2 LP1 RFo ACGND BBBi BBBi 11 12 3,16,17,18 GND 2 5 ACGND Power down 100n
20 4
Figure 9-2.
Application Circuit with DC-coupled Baseband Inputs
1n PU 1 Power up Power down 6,7 VS 8 SPU 19 Duty cycle regenerator Frequency doubler 0 90 90 control loop LP2 LP1 1n OUT 1n 1n 2 1n 3,16,17,18 GND 5 ACGND 100n
VRef 100n 10 10k BBAi BBAi LOi 14 LOi 15 9 13
Baseband processing
LO
10k 100p
20
4 RFo ACGND
10k 10k 100n BBBI 11 BBBI 12
10. Ordering Information
Extended Type Number U2793B-NFSH U2793B-NFSG3H Package SSO20 SSO20 Remarks Tube, lead free Taped and reeled, lead free
11
4651E-CELL-07/06
11. Package Information
12. Revision History
Please note that the following page numbers referred to in this section refer to the specific revision mentioned, not to this document. Revision No. History * * * * * Page 1, PB-free logo deleted Page 3, Pin Desription table: Symbols of Pins 10,12, 15 changed Page 4, Abs. Max. Ratings table: Storage temperature values changed Page 5, row 4.7 changed Put datasheet in a new template
4651E-CELL-07/06
12
U2793B
4651E-CELL-07/06
Atmel Corporation
2325 Orchard Parkway San Jose, CA 95131, USA Tel: 1(408) 441-0311 Fax: 1(408) 487-2600
Atmel Operations
Memory
2325 Orchard Parkway San Jose, CA 95131, USA 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, USA Tel: 1(719) 576-3300 Fax: 1(719) 540-1759
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
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
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 Tsimshatsui 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, 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
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 Requests
www.atmel.com/literature
Disclaimer: The information in this document is provided in connection with Atmel products. No license, express or implied, by estoppel or otherwise, to any intellectual property right is granted by this document or in connection with the sale of Atmel products. EXCEPT AS SET FORTH IN ATMEL'S TERMS AND CONDITIONS OF SALE LOCATED ON ATMEL'S WEB SITE, ATMEL ASSUMES NO LIABILITY WHATSOEVER AND DISCLAIMS ANY EXPRESS, IMPLIED OR STATUTORY WARRANTY RELATING TO ITS PRODUCTS INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT, CONSEQUENTIAL, PUNITIVE, SPECIAL OR INCIDENTAL DAMAGES (INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS OF PROFITS, BUSINESS INTERRUPTION, OR LOSS OF INFORMATION) ARISING OUT OF THE USE OR INABILITY TO USE THIS DOCUMENT, EVEN IF ATMEL HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. Atmel makes no representations or warranties with respect to the accuracy or completeness of the contents of this document and reserves the right to make changes to specifications and product descriptions at any time without notice. Atmel does not make any commitment to update the information contained herein. Unless specifically provided otherwise, Atmel products are not suitable for, and shall not be used in, automotive applications. Atmel's products are not intended, authorized, or warranted for use as components in applications intended to support or sustain life.
(c) 2006 Atmel Corporation. All rights reserved. Atmel (R), logo and combinations thereof, Everywhere You Are(R) and others are registered trademarks or trademarks of Atmel Corporation or its subsidiaries. Other terms and product names may be trademarks of others.
4651E-CELL-07/06

▲Up To Search▲

Price & Availability of U2793B06

	To Download U2793B06 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .