adl5380 Analog Devices, Inc., adl5380 Datasheet

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adl5380

Manufacturer Part Number
adl5380
Description
400 To 6000mhz Quadrature Demodulator
Manufacturer
Analog Devices, Inc.
Datasheet

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Preliminary Technical Data
FEATURES
IIP3 +31 dBm
IIP2 +60dBm
Input P1dB +12dBm
NF 13.2 dB @ 2.5GHz
Voltage Conversion Gain of 4dB
Quadrature demodulation accuracy
LO Input –10 to +6 dBm
Demodulation Bandwidth ~500 MHz
I/Q Drive 2V
APPLICATIONS
QAM/QPSK demodulator
W-CDMA/CDMA/CDMA2000/GSM
Point-to-(Multi)Point Radio
WiMax/LTE
GENERAL DESCRIPTION
The ADL5380 is a high performance quadrature I-Q
demodulator that covers an RF input frequency range from 400
MHz to 6 GHz. With a NF = 13dB, IP1dB = 12dBm and IIP3 =
31dBm at 2.5GHz, the demodulator offers good dynamic range
suitable for the demanding infrastructure direct-conversion
requirements. The differential RF inputs provide a well-behaved
broad-band input impedance of 50Ω and should be driven from
a 1:1 balun for best performance.
Excellent quadrature accuracy is achieved using on-chip poly-
phase filters for LO quadrature generation. Over a wide range of
local oscillator (LO) levels, excellent demodulation accuracy is
achieved with phase and amplitude balances < 0.25 dB and <
0.5
(Q) differential outputs are fully buffered. The ADL5380
provides a typical voltage conversion gain of 4dB
Rev. PrB
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.
I/Q Demodulator
RF frequency
Phase accuracy <0.5°
Amplitude balance <0.25 dB
o
, respectively. The demodulated in-phase (I) and quadrature
400 MHz to 6000MHz
pp
into 200Ω
independent of differential load impedances as low as 100 Ω
with a drive capability exceeding 2V
The fully balanced design minimizes effects from 2
distortion. The leakage from the LO port to the RF port is
60dBc. Differential DC-offsets at the I and Q outputs are
<10mV. Both of these factors contribute to the excellent IIP2 of
>60dBm.
The ADL5380 operates off a 4.75V to 5.25V supply with a
typical supply current of 200mA. The ADL5380 is fabricated
using Analog Devices’ advanced Silicon-Germanium bipolar
process and is available in a 24-lead exposed paddle LFCSP
package. Performance is specified over a -40
temperature range.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.326.8703
Quadrature Demodulator
Figure 1.
© 2008 Analog Devices, Inc. All rights reserved.
Functional Block Diagram
400 to 6000MHz
pp
in to 200 Ω.
o
C to +85
ADL5380
www.analog.com
nd
order
o
C
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adl5380 Summary of contents

Page 1

... Differential DC-offsets at the I and Q outputs are <10mV. Both of these factors contribute to the excellent IIP2 of >60dBm. The ADL5380 operates off a 4.75V to 5.25V supply with a typical supply current of 200mA. The ADL5380 is fabricated using Analog Devices’ advanced Silicon-Germanium bipolar process and is available in a 24-lead exposed paddle LFCSP package ...

Page 2

AD5380 SPECIFICATIONS o Table 1.5kΩ for RF ≤ 3GHz BIAS loaded to 50 Ω using a 9:1 balun. Loss of RF input balun de-embedded from measurements. ...

Page 3

... Signal 3 dB Bandwidth 400 Mhz to 6000 Mhz 0dBm LO input Any 20 MHz Any 20 MHz Differential 200 Ω load 1kΩ load Each pin VPOS With RAdj = 1.5kΩ With RAdj = 200Ω Rev. PrB | Page ADL5380 4.3 dB TBD dB 500 MHz TBD MHz TBD deg TBD ...

Page 4

AD5380 ABSOLUTE MAXIMUM RATINGS Parameter Supply Voltage VPOS1, VPOS2, VPOS3 LO Input Power RF/IF Input Power Internal Max Power Dissipation θ JA Maximum Junction Temperature Operating Temperature Range Storage Temperature Range Lead Temperature (Soldering, 60 sec) Rating Stresses above those ...

Page 5

... M/A-COM ETC1-1-13 for lower frequecies and Johanson xxxx for higher frequecies). Exposed Paddle. Connect to a low impedance thermal and electrical ground plane. Rev. PrB | Page ADJ GND 18 17 GND QHI 16 15 QLO GND 14 13 VCC 1.5 kΩ. For ADJ ADL5380 ...

Page 6

AD5380 TYPICAL PERFORMANCE CHARACTERISTICS 25° 1.5 kΩ Ω, ETC1-1-13 balun on RF input. Balun loss de-embedded. S ADJ 500 1000 1500 2000 RF ...

Page 7

... Rev. PrB | Page 3000 3200 3400 3600 3800 RF Frequency (MHz) Figure 12 IIP3 and IIP2 vs. Frequency 3200 3400 3600 3800 RF Frequency (MHz) Figure 13. Magnitude Imbalance vs. Frequency 3.5GHz 700MHz -60 -50 -40 -30 -20 RF Input Power (dBm) and 3.5Ghz ADL5380 4000 4200 4000 4200 -10 0 ...

Page 8

... T4x R7x R15x INx R4x R10x V POS C9x R9x RFx T3x C5x C12x R19x C8x GND 2 GND 3 IHI ADL5380 4 ILO 5 GND 6 VCC C6x R1x R9x R11x V POS C2x C3x C4x C1x P1A T1x V POS LONx LOPx LO_SE Figure 16 ...

Page 9

... LO Input Interface. A 1:1 RF balun that converts the single-ended RF input to differential signal is used. T3x RF Input Interface. A 1:1 RF balun that converts the single-ended RF input to differential signal is used. Rev. PrB | Page ADL5380 Default Condition Not Applicable R10x, R12x, R19x = 0 Ω (0603) C6x, C7x, C8x = 100 pF (0402) C9x, C10x, C11x = 0.1 μF (0603) P1A, R9x=DNI, R1x= DNI, R11x= 0 Ω ...

Page 10

... Model Temperature Range ADL5380ACPZ-R7 –40°C to +85°C ADL5380ACPZ-WP –40°C to +85°C ADL5380-30A-EVALZ ADL5380-29A-EVALZ Dimensions shown in millimeters Package Description 7” Tape and Reel Waffle Pack Evaluation Board for operation < 3GHz Evaluation Board for operation from 3GHz to 4GHz Rev. PrB | Page ...

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