Datasheet ADL5321 (Analog Devices)

2.3 GHz to 4.0 GHz ¼ Watt RF Driver Amplifier Data Sheet ADL5321 FEATURES FUNCTIONAL BLOCK DIAGRAM Operation: 2.3 GHz to 4.0 GHz GND Gain of 14.0 dB at 2.6 GHz (2) OIP3 of 41.0 dBm at 2.6 GHz ADL5321 P1dB of 25.7 dBm at 2.6 GHz Noise figure: 4.0 dB at 2.6 GHz Power supply voltage: 3.3 V to 5 V BIAS Power supply current: 37 mA to 90 mA 1 2 3
01 0 7-
Dynamically adjustable bias RFIN GND RFOUT
30 07
No bias resistor required
Figure 1.
Thermally efficient, MSL-1 rated SOT-89 package Operating temperature range: −40°C to +105°C ESD rating of ±2 kV (Class 3A) APPLICATIONS Wireless infrastructure Automated test equipment ISM/AMR applications GENERAL DESCRIPTION
The ADL5321 incorporates a dynamically adjustable biasing The ADL5321 also delivers excellent adjacent channel leakage circuit that allows for the customization of OIP3 and P1dB ratio (ACLR) vs. POUT. For output powers up to 10 dBm rms, the performance from 3.3 V to 5 V without the need for an external ADL5321 adds very little distortion to the output spectrum. At bias resistor. This feature gives the designer the ability to tailor 2.6 GHz, the ACLR is −59 dB and a relative constellation error of driver amplifier performance to the specific needs of the design. −46.6 dB (<0.5% EVM) at an output power of 10 dBm rms. This feature also creates the opportunity for dynamic biasing of
–30
the driver amplifier, where a variable supply is used to allow for
ADJ CH LOW 2.6 GHZ
full 5 V biasing under large signal conditions and then can
ALT CH LOW 2.6 GHZ –40 ADJ CH LOW 3.5 GHZ
reduce the supply voltage when signal levels are smaller and
ALT CH UP 3.5 GHZ
lower power consumption is desirable. This scalability reduces
–50
the need to evaluate and inventory multiple driver amplifiers
B) d
for different output power requirements from 22 dBm to
( R –60
26 dBm output power levels.
ACL –70
The ADL5321 is also rated to operate across the wide temper- ature range of −40°C to +105°C for reliable performance in
–80
designs that experience higher temperatures, such as power amplifiers. The ¼ watt driver amplifier covers the 2.3 GHz to
–90
125
–10 –5 0 5 10 15 20
4.0 GHz wide frequency range and only requires a few external 07-
POUT (dBm)
073 components to be tuned to a specific band within that wide Figure 2. WiMAX 64 QAM, 10 MHz Bandwidth, Single Carrier range. This high performance, broadband RF driver amplifier is well suited for a variety of wired and wireless applications including cellular infrastructure, ISM band power amplifiers, defense equipment, and instrumentation equipment. A fully populated evaluation board is available.
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Document Outline Features Applications Functional Block Diagram General Description Table of Contents Revision History Specifications Typical Scattering Parameters Absolute Maximum Ratings Thermal Resistance ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics High Temperature and 3.3 V Operation Basic Layout Connections Soldering Information and Recommended PCB Land Pattern Matching Procedure WiMax Operation Evaluation Board Outline Dimensions Ordering Guide