ADL5521ACPZ-WP AD [Analog Devices], ADL5521ACPZ-WP Datasheet

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ADL5521ACPZ-WP

Manufacturer Part Number
ADL5521ACPZ-WP
Description
400 MHz - 4000 MHz Low Noise Amplifier
Manufacturer
AD [Analog Devices]
Datasheet
FEATURES
Operation from 400 MHz to 4000 MHz
Noise figure of 0.8 dB at 900 MHz
Gain of 20.0 dB at 900 MHz
OIP3 of 37.7 dBm at 900 MHz
P1dB of 22.0 dBm at 900 MHz
Integrated bias control circuit
Single supply operation from 3 V to 5 V
Operating current of 26 mA at 3 V
Small footprint LFCSP package
Pin compatible with 17.5 dB gain ADL5523
GENERAL DESCRIPTION
The ADL5521 is a high performance GaAs pHEMT low-noise
amplifier. It provides high gain and low noise figure for single down-
conversion IF sampling receiver architectures as well as direct down
conversion receivers. The ADL5521 also has low power
consumption at 3 V.
The ADL5521 allows optimal noise matching without sacrificing
significant gain matching. S11 of better then 6 dB can typically be
achieved when matching for optimal noise.
The ADL5521 amplifier comes in a compact, thermally enhanced,
3mm x 3mm LFCSP package and operates over the temperature
range of −40°C to +85°C.
The ADL5523 is a companion part that offers a gain of 17.5 dB in a
pin compatible package. A fully populated evaluation board is also
available.
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.
Preliminary Technical Data
Including external input match
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.326.8703
VBIAS 1
RFIN 2
NC 3
NC 4
FUNCTIONAL BLOCK DIAGRAM
© 2008 Analog Devices, Inc. All rights reserved.
400 MHz – 4000 MHz
ACTIVE
Low Noise Amplifier
BIAS
ADL5521
Figure 1.
www.analog.com
ADL5521
8 VPOS
7 RFOUT
6 NC
5 NC

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ADL5521ACPZ-WP Summary of contents

Page 1

Preliminary Technical Data FEATURES Operation from 400 MHz to 4000 MHz Noise figure of 0 900 MHz Including external input match Gain of 20 900 MHz OIP3 of 37.7 dBm at 900 MHz P1dB of 22.0 ...

Page 2

ADL5521 AC Specifications ................................................................................................................................................................................................................4 AC Specifications ................................................................................................................................................................................................................5 AC Specifications (cont.) ...................................................................................................................................................................................................6 AC Specifications (cont.) ...................................................................................................................................................................................................7 De-Embedded S-Parameters .........................................................................................................................................................................8 POS De-Embedded S-Parameters (Cont.) ...........................................................................................................................................................9 POS De-Embedded S-Parameters ...................................................................................................................................................................... 10 POS De-Embedded S-Parameters, ...

Page 3

Preliminary Technical Data Tuning the LNA Input for Optimal Gain ............................................................................................................................................................. 37 Tuning the LNA Input for Optimal Noise Figure ............................................................................................................................................... 37 S11 Parameters of ADL5521,23 with S22 Matched ............................................................................................................................................ 38 Example of Optimal Noise Matching at 850MHz ............................................................................................................................................... 41 ...

Page 4

ADL5521 AC SPECIFICATIONS T = 25° 3.3KΩ, parameters include matching circuit, matched for optimal noise, unless otherwise noted BIAS Table 1. Parameter Conditions Frequency = 500MHz Gain ( Gain Flatness In the [450 – 550] frequency ...

Page 5

Preliminary Technical Data AC SPECIFICATIONS T = 25° 3.3KΩ, parameters include matching circuit, matched for optimal noise, unless otherwise noted BIAS Table 2. Parameter Conditions Frequency = 1300MHz Gain ( Gain Flatness In the [1200 – ...

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ADL5521 AC SPECIFICATIONS (CONT 25° 3.3KΩ, parameters include matching circuit, matched for optimal noise, unless otherwise noted BIAS Table 3. Parameter Conditions Frequency = 2140MHz Gain ( Gain Flatness In the [2110 – 2170] ...

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Preliminary Technical Data AC SPECIFICATIONS (CONT 25° 3.3KΩ, parameters include matching circuit, matched for optimal noise, unless otherwise noted BIAS Table 4. Parameter Conditions Frequency = 3500MHz Gain ( Gain Flatness In the [3400 ...

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ADL5521 DE-EMBEDDED S-PARAMETERS, V Frequency (GHz) 0.05 0.125 0.25 0.375 0.5 0.625 0.75 0.875 1.0 1.125 1.25 1.375 1.5 1.625 1.75 1.875 2.0 2.125 2.25 2.375 2.5 2.625 2.75 2.875 3.0 3.125 = 5V POS ...

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Preliminary Technical Data DE-EMBEDDED S-PARAMETERS, V Frequency (GHz) 3.125 3.25 3.375 3.5 3.625 3.75 3.875 4 (CONT.) POS (Mag) (Angle) (Mag) (Angle) Rev. PrC| Page ...

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ADL5521 DE-EMBEDDED S-PARAMETERS, V Frequency (GHz) 0.05 0.125 0.25 0.375 0.5 0.625 0.75 0.875 1.0 1.125 1.25 1.375 1.5 1.625 1.75 1.875 2.0 2.125 2.25 2.375 2.5 2.625 2.75 2.875 3.0 3.125 = 3V POS ...

Page 11

Preliminary Technical Data DE-EMBEDDED S-PARAMETERS, V Frequency (GHz) 3.125 3.25 3.375 3.5 3.625 3.75 3.875 4 (CONT.) POS (Mag) (Angle) (Mag) (Angle) Rev. PrC| Page ...

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ADL5521 ABSOLUTE MAXIMUM RATINGS Table 5 Parameter Supply Voltage, V POS Max RF Input Level Internal Power Dissipation θ (Exposed paddle soldered down) JA θ (Exposed paddle not soldered down) JA θ (At exposed paddle) JC Maximum Junction Temperature Operating ...

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Preliminary Technical Data PIN CONFIGURATION AND FUNCTIONAL DESCRIPTIONS VBIAS 1 Pin No. Mnemonic 1 VBIAS 2 RFIN 3,4,5 RFOUT 8 VPOS Exposed pad EP Top View (not to scale) RFIN 2 Exposed Pad ADL5521 ...

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ADL5521 TYPICAL PERFORMANCE CHARACTERISTICS, 500MHZ, VPOS = 5V Matched for optimal noise figure, external matching circuit included. Figure 3. Typical S Parameters, Log magnitude Figure 5.Gain, P1dB, OIP3 vs. Frequency Figure 7. Output Power and Gain vs. Temperature Preliminary Technical ...

Page 15

Preliminary Technical Data TYPICAL PERFORMANCE CHARACTERISTICS, 900MHZ, VPOS = 5V Matched for optimal noise figure, external matching circuit included. Figure 9. Typical S Parameters, Log magnitude Figure 11.Gain, P1dB, OIP3 vs. Frequency Figure 13. Output Power and Gain vs. Temperature ...

Page 16

ADL5521 TYPICAL PERFORMANCE CHARACTERISTICS, 1300MHZ, VPOS = 5V Matched for optimal noise figure, external matching circuit included. Figure 15. Typical S Parameters, Log magnitude Figure 17.Gain, P1dB, OIP3 vs. Frequency Figure 19. Output Power and Gain vs. Temperature Preliminary Technical ...

Page 17

Preliminary Technical Data TYPICAL PERFORMANCE CHARACTERISTICS, 1950MHZ, VPOS = 5V Matched for optimal noise figure, external matching circuit included. Figure 21. Typical S Parameters, Log magnitude P1dB (-40°C +25°C 22 +85° Gain (-40°C 16 ...

Page 18

ADL5521 TYPICAL PERFORMANCE CHARACTERISTICS, 2140MHZ, VPOS = 5V Matched for optimal noise figure, external matching circuit included. Figure 27. Typical S Parameters, Log magnitude Figure 29.Gain, P1dB, OIP3 vs. Frequency Figure 31. Output Power and Gain vs. Temperature Preliminary Technical ...

Page 19

Preliminary Technical Data TYPICAL PERFORMANCE CHARACTERISTICS, 2600MHZ, VPOS = 5V Matched for optimal noise figure, external matching circuit included. Figure 33. Typical S Parameters, Log magnitude Figure 35.Gain, P1dB, OIP3 vs. Frequency Figure 37. Output Power and Gain vs. Temperature ...

Page 20

ADL5521 TYPICAL PERFORMANCE CHARACTERISTICS, 3500MHZ, VPOS = 5V Matched for optimal noise figure, external matching circuit included. Figure 39. Typical S Parameters, Log magnitude Figure 41.Gain, P1dB, OIP3 vs. Frequency Figure 43. Output Power and Gain vs. Temperature Preliminary Technical ...

Page 21

Preliminary Technical Data TYPICAL PERFORMANCE CHARACTERISTICS, 500MHZ, VPOS = 3V Matched for optimal noise figure, external matching circuit included. Figure 45. Typical S Parameters, Log magnitude Figure 47.Gain, P1dB, OIP3 vs. Frequency Figure 49. Output Power and Gain vs. Temperature ...

Page 22

ADL5521 TYPICAL PERFORMANCE CHARACTERISTICS, 900MHZ, VPOS = 3V Matched for optimal noise figure, external matching circuit included. Figure 51. Typical S Parameters, Log magnitude Figure 53.Gain, P1dB, OIP3 vs. Frequency Figure 55. Output Power and Gain vs. Temperature Preliminary Technical ...

Page 23

Preliminary Technical Data TYPICAL PERFORMANCE CHARACTERISTICS, 1300MHZ, VPOS = 3V Matched for optimal noise figure, external matching circuit included. Figure 57. Typical S Parameters, Log magnitude Figure 59.Gain, P1dB, OIP3 vs. Frequency Figure 61. Output Power and Gain vs. Temperature ...

Page 24

ADL5521 TYPICAL PERFORMANCE CHARACTERISTICS, 1950MHZ, VPOS = 3V Matched for optimal noise figure, external matching circuit included. Figure 63. Typical S Parameters, Log magnitude Figure 65.Gain, P1dB, OIP3 vs. Frequency Figure 67. Output Power and Gain vs. Temperature Preliminary Technical ...

Page 25

Preliminary Technical Data TYPICAL PERFORMANCE CHARACTERISTICS, 2140MHZ, VPOS = 3V Matched for optimal noise figure, external matching circuit included. Figure 69. Typical S Parameters, Log magnitude Figure 71.Gain, P1dB, OIP3 vs. Frequency Figure 73. Output Power and Gain vs. Temperature ...

Page 26

ADL5521 TYPICAL PERFORMANCE CHARACTERISTICS, 2600MHZ, VPOS = 3V Matched for optimal noise figure, external matching circuit included. Figure 75. Typical S Parameters, Log magnitude Figure 77.Gain, P1dB, OIP3 vs. Frequency Figure 79. Output Power and Gain vs. Temperature Preliminary Technical ...

Page 27

Preliminary Technical Data TYPICAL PERFORMANCE CHARACTERISTICS, 3500MHZ, VPOS = 3V Matched for optimal noise figure, external matching circuit included. Figure 81. Typical S Parameters, Log magnitude Figure 83.Gain, P1dB, OIP3 vs. Frequency Figure 85. Output Power and Gain vs. Temperature ...

Page 28

ADL5521 TYPICAL DC PERFORMANCE CHARACTERISTICS -40 -30 -20 - Temperature - degC Figure 87. ADL5521 Current vs. Temperature, VPOS = ...

Page 29

Preliminary Technical Data a L1** Input C1* note - ground is through thermal pad *Murata-Erie multilayer ceramic cap **Coilcraft High Q Surface Mount Inductor Table 6. Recommended Components and Positions of Matching Components for Basic Connections, Tuned for Optimal Noise ...

Page 30

ADL5521 SOURCE PULL CIRCLES, GAIN AND NOISE FIGURE, V Figure 89. Noise Contours for Figure 90. Noise Contours for 500MHz Matching Components 2140MHz Matching Components Figure 91. Noise Contours for Figure 92. Noise Contours for 900MHz Matching Components 2600MHz Matching ...

Page 31

Preliminary Technical Data LOAD PULL CIRCLES, GAIN AND IP3 POS Figure 96. IP3 and Gain Contours for Figure 97. IP3 and Gain Contours 500MHz Matching Components for 2140MHz Matching Components Figure 98. IP3 and Gain Contours for ...

Page 32

ADL5521 SOURCE PULL CIRCLES, NOISE FIGURE POS Figure 103. Noise Contours for Figure 104. Noise Contours for 500MHz Matching Components 2140MHz Matching Components Figure 105. Noise Contours for Figure 106. Noise Contours for 900MHz Matching Components 2600MHz ...

Page 33

Preliminary Technical Data LOAD PULL CIRCLES, GAIN AND IP3 POS Figure 110. IP3 and Gain Contours Figure 111. IP3 and Gain Contours for 500MHz Matching Components for 2140MHz Matching Components Figure 112. IP3 and Gain Contours Figure ...

Page 34

ADL5521 TUNING THE ADL5521/23 EVAL BOARD FOR OPTIMAL NOISE FIGURE The ADL5521 and ADL5523 are monolithic LNAs in a 3x3mm LFCSP package. The eval board, as shipped from the factory, should give a noise figure of 0.9dB over a bandwidth ...

Page 35

Preliminary Technical Data Figure 117. PCB Layout for LNA Eval Board, Note 'Slider' on Bias Line Rev. PrC| Page ADL5521 ...

Page 36

ADL5521 Figure 118. S22 tuned for 800MHz Figure 120. S22 tuned for 1400MHz Figure 122. S22 tuned for 2.0GHz Preliminary Technical Data Figure 119. S22 tuned for 2.4GHz Figure 121. S22 tuned for 2.8GHz Figure 123. S22 tuned for 3.2GHz ...

Page 37

Preliminary Technical Data Tuning the LNA Input for Optimal Gain LNAs are generally tuned for either gain or noise optimization, or some tradeoff between the two. One figure of merit of an LNA is how much tradeoff must be made ...

Page 38

ADL5521 Figure 126. Area of Optimal Noise Matching for ADL5521, 23 S11 Parameters of ADL5521,23 with S22 Matched To determine the correct matching circuit for optimal noise, the next step is to look at the results of S11 for the ...

Page 39

Preliminary Technical Data Figure 127. S11 of ADL5521 with S22 Matched at 800MHz Figure 128. S11 of ADL5521 with S22 Matched at 1.4 GHz Figure 129. S11 of ADL5521 with S22 Matched at 2.0 GHz Rev. PrC| Page 39 of ...

Page 40

ADL5521 Figure 130. S11 of ADL5521 with S22 Matched at 2.4 GHz Figure 131. S11 of ADL5521 with S22 Matched at 2.8 GHz Figure 132. S11 of ADL5521 with S22 Matched at 3.2 GHz Rev. PrC| Page ...

Page 41

Preliminary Technical Data Figure 133. Example of Series L, Shunt C Matching Network for Example of Optimal Noise Matching at 850MHz Based on the S11 information given in Figure 127, a value 9.0nH and a value of ...

Page 42

ADL5521 5E+08 7E+08 9E+08 1.1E+09 1.3E+09 1.5E+09 1.7E+09 1.9E+09 Figure 134. Noise Figure of ADL5521 When Tuned for 850MHz Figure 135. S22 and S11 Matching for ADL5521, 850MHz Example Rev. PrC| Page 42 of ...

Page 43

Preliminary Technical Data 1.50E+09 1.70E+09 Figure 136. Log-Log Plot of S Parameters, ADL5521 850MHz Example 1.90E+09 2.10E+09 2.30E+09 Figure 137. Noise Figure of ADL5521 When Tuned for 2.4GHz Rev. PrC| ...

Page 44

ADL5521 Figure 138. S22 and S11 Matching for ADL5521, 2.4GHz Example Figure 139. Log-Log Plot of S Parameters, ADL5521 2.4GHz Example Rev. PrC| Page Preliminary Technical Data ...

Page 45

... PLANE ORDERING GUIDE Model Temperature Range 1 ADL5521ACPZ-R7 –40°C to +85°C 1 ADL5521ACPZ-WP –40°C to +85°C ADL5521-EVALZ ADL5521 is qualified to the reflow profile in JEDEC standard J-STD-020 at a peak temp of 260C. Moisture sensitivity level per JEDEC standard J-STD-20 is MSL3 free part 3.25 0.60 MAX 3 ...

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