New Content (1)
Features and Benefits
- Low noise figure: 2.5 dB typical at 0.025 GHz to 10 GHz
- Single positive supply (self biased)
- High gain: 16.5 dB typical at 0.025 GHz to 10 GHz
- High OIP3: 36 dBm typical at 0.025 GHz to 10 GHz
- RoHS-compliant, 2 mm × 2 mm, 6-lead LFCSP
The ADL8121 is a gallium arsenide (GaAs), monolithic microwave integrated circuit (MMIC), pseudomorphic high electron mobility transistor (pHEMT), low noise wideband amplifier that operates from 0.025 GHz to 12 GHz.
The ADL8121 provides a typical gain of 16.5 dB, a 2.5 dB typical noise figure, and a typical output third-order intercept (OIP3) of 36 dBm across the 0.025 GHz to 10 GHz frequency range, requiring only 95 mA from a 5 V supply voltage. The saturated output power (PSAT) of 21.5 dBm typical across the 0.025 GHz to 10 GHz frequency range enables the low noise amplifier (LNA) to function as a local oscillator (LO) driver for many of Analog Devices, Inc., balanced, in-phase and quadrature (I/Q) or image rejection mixers.
The ADL8121 also features inputs and outputs that are internally matched to 50 Ω, making the device ideal for surface-mounted technology (SMT)-based and is housed in a RoHS-compliant, 2 mm × 2 mm, 6-lead LFCSP.
Product Lifecycle Recommended for New Designs
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
Evaluation Kits (1)
The ADL8121-EVALZ consists of a 4-layer printed circuit board (PCB) fabricated from 10 mil thick, Rogers 4350B and Isola 370HR copper clad, forming a nominal thickness of 62 mils. The RFIN and RFOUT ports on the ADL8121-EVALZ are populated with Subminiature A (SMA) female coaxial connectors, and the corresponding RF traces have a 50 Ω characteristic impedance. The ADL8121-EVALZ is populated with components suitable for use over the entire −40°C to +85°C operating temperature range of the ADL8121. To calibrate board trace losses, a through calibration path is provided between the J1 and J2 connectors. J1 and J2 must be populated with RF connectors and capacitors to use the through calibration path. Refer Figure 3 to Table 1 and for the through calibration path performance.
Access the ADL8121-EVALZ ground path and RFOUT/VDD pin through the surface-mount technology (SMT) test point connectors, GND and VDD. A supplementary test point for VBIAS is included for simple access on the RBIAS pin (see Figure 5 in the user guide for the test point locations).
The RF traces on the ADL8121-EVALZ are 50 Ω, grounded coplanar waveguide. The package ground leads and the exposed pad connect directly to the ground plane. Multiple vias connect the top and bottom ground planes with particular focus on the area directly beneath the ground paddle to provide adequate electrical conduction and thermal conduction to the heat sink.
The power supply decoupling capacitors on the ADL8121-EVALZ represent the configuration used to characterize and qualify the device.
For full details on the ADL8121, see the ADL8121 data sheet, which must be consulted in conjunction with the user guide when using the ADL8121-EVALZ.
Tools & Simulations
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
Sample & Buy
The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.