ADL5350-EVAL AD [Analog Devices], ADL5350-EVAL Datasheet

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ADL5350-EVAL

Manufacturer Part Number
ADL5350-EVAL
Description
LF to 4 GHz High Linearity Y-Mixer
Manufacturer
AD [Analog Devices]
Datasheet
Preliminary Technical Data
FEATURES
Broadband RF, IF, and LO ports
Conversion loss: 6 dB
Noise figure: 6 dB
High input IP3: 26 dBm
High input P
Low LO drive level
Single-ended design: no need for baluns
Single-supply operation: 3 V @ 10 mA
Miniature 8-lead 3 mm x 2 mm LFCSP package
RoHS compliant
APPLICATIONS
Cellular base station
Point-to-point radio links
RF instrumentation
GENERAL DESCRIPTION
The ADL5350 is a high linearity, up-and-down converting mixer
capable of operating over a broad input frequency range. It is well
suited for demanding cellular base-station mixer designs that
require high sensitivity and efficient blocker immunity. Based
on a GaAs pHEMT single-ended mixer architecture, the ADL5350
provides excellent input linearity and low noise figure without
the need for a high power level, local oscillator (LO) drive.
In 850 MHz/900 MHz receive applications, the ADL5350
provides a typical conversion loss of only 6 dB. The integrated
LO amplifier allows a low LO drive level, typically only 4 dBm
for most applications. The input IP3 is typically greater than
25 dBm, with an input compression point of 17 dBm. The high
input linearity of the ADL5350 makes the device an excellent
mixer for communications systems that require high blocker
immunity, such as GSM 850/900 and 800 MHz CDMA2000. At
2 GHz, a slightly greater supply current is required to obtain
similar performance.
Rev. PrC
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
1dB
: 17 dBm
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
For low frequency applications, the ADL5350 provides access to
the gate contact of the output-mixing device. This allows an
external LO coupling capacitor to be applied between the
VPOS pin and GC pin, helping to improve the LO drive to the
switching device. Using a single 100 pF capacitor allows high
performance at the lower LO frequencies.
The single-ended broadband RF/IF port allows the device to be
customized for a desired band of operation using simple
external filter networks. The LO to RF isolation is based on the
LO rejection of the RF port filter network. Greater isolation
may be achieved using higher order filter networks as described
in the Applications section of this data sheet.
The ADL5350 is fabricated on a GaAs pHEMT high
performance IC process. The ADL5350 is available in a
3 mm × 2 mm 8-lead LFCSP package. It operates over a
−40°C to +85°C temperature range. An evaluation board is also
available.
3V
FUNCTIONAL BLOCK DIAGRAM
INPUT OR
OUTPUT
High Linearity Y-Mixer
RF
VPOS
© 2005 Analog Devices, Inc. All rights reserved.
GC
RF
Figure 1.
GND
ADL5350
LO
INPUT
LO
LF to 4 GHz
IF
GND
OUTPUT OR
ADL5350
INPUT
www.analog.com
IF

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ADL5350-EVAL Summary of contents

Page 1

... The input IP3 is typically greater than 25 dBm, with an input compression point of 17 dBm. The high input linearity of the ADL5350 makes the device an excellent mixer for communications systems that require high blocker immunity, such as GSM 850/900 and 800 MHz CDMA2000 GHz, a slightly greater supply current is required to obtain similar performance ...

Page 2

... ADL5350 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 Functional Block Diagram .............................................................. 1 General Description ......................................................................... 1 Specifications..................................................................................... 3 820 MHz Receive Performance .................................................. 3 1950 MHz Receive Performance ................................................ 3 Spur Tables......................................................................................... 4 450 MHz Spur Table..................................................................... 4 820 MHz Spur Table..................................................................... 4 1950 MHz Spur Table................................................................... 5 Absolute Maximum Ratings............................................................ 6 ESD Caution.................................................................................. 6 Pin Configuration and Function Descriptions............................. 7 Preliminary Technical Data Typical Performance Characteristics ...

Page 3

... 1949 MHz 1951 MHz 1760 MHz RF2 LO = 190 MHz, each RF tone 0 dBm = 1950 MHz 1760 MHz, f =190 MHz 1950 MHz 1760 MHz 1950 MHz 1760 MHz 1950 MHz 1760 MHz 1950 MHz 1760 MHz RF LO ADL5350 ...

Page 4

... ADL5350 SPUR TABLES All spur tables are N × f − M × f -mixer spurious products for 0 dBm input power, unless otherwise noted 450 MHz SPUR TABLE Table −5.7 −16.2 −25.5 −16.2 −24.9 −5.7 −30.1 −18 −47.4 −57.5 −51.1 − ...

Page 5

... N.M. −79.6 −78.7 −77.6 −87 N.M. N.M. −74.4 −81.6 − N.M. N.M. N.M. −78.9 − N.M. N.M. N.M. N.M. −78.7 ADL5350 N.M. N. N.M. N. N.M. N. N.M. N. N.M. N. N.M. N. N.M. N. N.M. N. N.M. N. N.M. N.M. −80.7 − ...

Page 6

... ADL5350 ABSOLUTE MAXIMUM RATINGS Table 6. Parameter Supply Voltage Input Level LO Input Level Internal Power Dissipation θ JA Maximum Junction Temperature Operating Temperature Range Storage Temperature Range ESD CAUTION ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although this product features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges ...

Page 7

... Gate Contact of Mixing Device. Typically not connected for high frequency mixing. Connecting capacitor between GC and VPOS permits low frequency applications. RF/ RF/IF GND2 2 ADL5350 7 GC TOP VIEW LOIN 3 6 VPOS (Not to Scale) GND1 4 5 GND1 Figure 2. Pin Configuration PrC | Page ADL5350 ...

Page 8

... ADL5350 TYPICAL PERFORMANCE CHARACTERISTICS 820 MHz CHARACTERISTICS Frequency = 820 MHz, IF Frequency = 70 MHz, RF Level = −10 dBm, LO Level = 4 dBm, Temperature = 25°C, POS unless otherwise noted –40 – TEMPERATURE (°C) Figure 3. Current vs. Temperature ...

Page 9

... Figure 10. Input Compression vs. VPOS 2.7 3.0 3.5 4.0 SUPPLY VOLTAGE (V) Figure 11. Noise Figure vs. VPOS –40°C 4.7 5.2 –40°C +85°C 4.7 5.2 4.5 5.0 5.5 PrC | Page ADL5350 –40° +85°C +25° 750 800 850 900 RF FREQUENCY (MHz) Figure 12. Current vs. RF Frequency 10 9 +85° +25°C 6 – ...

Page 10

... ADL5350 820 MHz CHARACTERISTICS +25°C –40° +85° 750 800 850 RF FREQUENCY (MHz) Figure 15. Input Compression vs. RF Frequency 700 750 800 850 RF FREQUENCY (MHz) Figure 16. Noise Figure vs. RF Frequency 16 14 –40°C 12 +25° ...

Page 11

... LO LEVEL (dBm) Figure 23. Conversion Loss vs. LO Level 250 300 350 380 +85°C +25°C –40° PrC | Page ADL5350 –5 –3 – LEVEL (dBm) Figure 24. IIP3 vs. LO Level ...

Page 12

... ADL5350 820 MHz CHARACTERISTICS 0 –5 –10 –15 –20 –25 –30 700 750 800 850 RF FREQUENCY (MHz) Figure 27 Feedthrough vs. RF Frequency 0 –5 –10 –15 –20 –25 –30 –35 –40 630 680 730 780 LO FREQUENCY (MHz) Figure 28 Feedthrough vs. LO Frequency ...

Page 13

... TEMPERATURE (°C) Figure 33. Input Compression vs. Temperature 45 40 +85° +25°C 20 –40° 2.7 3.2 3.7 4.2 4.7 SUPPLY VOLTAGE (V) Figure 34. Current vs. VPOS 0 –2 –4 –40°C –6 –8 +85°C –10 –12 2.7 3.2 3.7 4.2 4.7 SUPPLY VOLTAGE (V) Figure 35. Conversion Loss vs. VPOS ADL5350 60 80 5.2 +25°C 5.2 ...

Page 14

... ADL5350 1950 MHz CHARACTERISTICS 2.7 3.2 3.7 4.2 SUPPLY VOLTAGE (V) Figure 36. IIP3 vs. VPOS +85° 2.7 3.2 3.7 4.2 SUPPLY VOLTAGE (V) Figure 37. Input Compression vs. VPOS 2.7 3.0 3.5 4.0 SUPPLY VOLTAGE (V) Figure 38. Noise Figure vs. VPOS –40°C +25°C +85°C 4.7 5.2 –40°C +25° ...

Page 15

... IF FREQUENCY (MHz) Figure 44. Current vs. IF Frequency +85°C –40°C +25°C 1950 2000 2050 4.5 5.0 5.5 +25°C 250 300 350 PrC | Page ADL5350 12 10 +85° –40° 100 150 200 250 300 IF FREQUENCY (MHz) Figure 45. Conversion Loss vs. IF Frequency ...

Page 16

... ADL5350 1950 MHz CHARACTERISTICS 100 150 200 IF FREQUENCY (MHz) Figure 48. Noise Figure vs. IF Frequency –5 –3 – LEVEL (dBm) Figure 49. Current vs. LO Level –5 ...

Page 17

... Figure 55 Feedthrough vs. LO Frequency 2000 2050 2100 2150 1810 1860 1910 1960 PrC | Page –2 –4 –6 –8 –10 –12 –14 1560 1610 1660 1710 1760 1810 1860 LO FREQUENCY (MHz) Figure 56 Leakage vs. LO Frequency ADL5350 1910 1960 ...

Page 18

... RF/IF filter networks. IMPLEMENTATION PROCEDURE The ADL5350 is a simple single-ended mixer that relies on off- chip circuitry to achieve effective RF dynamic performance. The following steps should be followed to achieve optimum performance (see Figure 58 for component designations): ...

Page 19

... LC components when designing the RF, IF, and LO filter networks. Table 9 provides suggested values for initial prototyping 4.7 pF 4.7 nH 5.6 pF 1.5 pF 1 1.5 nH 0.7pF PrC | Page ADL5350 100 pF 8.2 nH 100 pF 3.5 nH 100 pF 3.0 nH 100 pF ...

Page 20

... APPLICATIONS LOW FREQUENCY APPLICATIONS Using an external capacitor from the GC pin to VPOS makes it possible to operate the ADL5350 at frequencies below 100 MHz. This capacitor is required because the internal capacitor between the LO buffer and the gate of the device is only 4 pF. This capacitance combined with the gate resistance causes a high-pass filter corner of 80 MHz ...

Page 21

... ADL5350 14.0 15.0 −39.1 −37.4 −32.9 −44.3 −56.8 −57.6 −74.3 −79.2 −87.9 −76.1 −73.6 −90.4 −78.1 −75.9 −79.3 −90.9 −85.0 −77.1 −84.5 − ...

Page 22

... ADL5350 HIGH FREQUENCY APPLICATIONS The ADL5350 can be used at extended frequencies with some careful attention to board and component parasitics. Figure example of a 2.3 GHz to 2.5 GHz down-conversion using a low-side LO. The performance of this circuit is depicted in Figure 62. Note that the inductor and capacitor values are very small, especially for the RF and IF ports ...

Page 23

... Preliminary Technical Data EVALUATION BOARD An evaluation board is available for the ADL5350. The evaluation board has two halves: a low band designated as Board A, and a high band board designated as Board B. The schematic for the evaluation board is presented in Figure 65. IF-A L2-A RF-A L1-A Table 12. Evaluation Board Configuration Options Component ...

Page 24

... Models Range 1 ADL5350ACPZ-R2 −40°C to +85°C 1 ADL5350ACPZ-R7 −40°C to +85°C 1 ADL5350ACPZ-WP −40°C to +85°C ADL5350-EVAL Pb-free part. © 2005 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. PR05615-0-12/05(PrC) 3.25 3.00 2.75 0.60 0.45 2 ...

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