Features and Benefits
- Conversion gain: 13 dB typical
- Image rejection: 32 dBc typical
- Input P1dB compression: −6 dBm typical
- Input IP3: 3 dBm typical, 6.0 GHz to 8.6 GHz
- Noise figure: 2 dB typical
- LO to RF isolation: 48 dBm typical
- LO to IF isolation: 13 dBm typical
- RF to IF isolation: 10 dBm typical
- Amplitude balance: 0.2 dB typical
- Phase balance: −2° typical
- RF return loss: 10 dB typical
- LO return loss: 15 dB typical
- IF return loss: 15 dB typical
- Exposed paddle, 4 mm × 4 mm, 24-lead, LFCSP
The HMC951A is a compact gallium arsenide (GaAs), monolithic microwave integrated circuit (MMIC), in-phase quadrature (I/Q) downconverter in a RoHS compliant package that operates from 5.6 GHz to 8.6 GHz. This device provides a small signal conversion gain of 13 dB with a noise figure of 2 dB and an image rejection of 32 dBc. The HMC951A uses a low noise amplifier (LNA) followed by an image mixer that is driven by a local oscillator (LO) buffer amplifier. The image reject mixer eliminates the need for a filter following the LNA and removes thermal noise at the image frequency. The IF1 and IF2 mixer outputs are provided and an external 90° hybrid is needed to select the required sideband. The I/Q mixer topology reduces the need for filtering of unwanted sideband. The HMC951A is a smaller alternative to hybrid style, single sideband (SSB) downconverter assemblies, and it eliminates the need for wire bonding by allowing the use of surface-mount manufacturing techniques.
The HMC951A is available in 4 mm × 4 mm, 24-lead lead frame chip scale package (LFCSP) and operates over the −40°C to +85°C temperature range. An evaluation board for the HMC951A is also available upon request.
- Point to point and point to multipoint radios
- Military radars, electronic warfare, and electronic intelligence
- Satellite communications
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 circuit board used in the application must use RF circuit design techniques. Signal lines must have 50 Ω impedance and connect the package ground leads and exposed pad directly to the ground plane. Use a sufficient number of via holes to connect the top and bottom ground planes.
Tools & Simulations
ADIsimRF is an easy-to-use RF signal chain calculator. Cascaded gain, noise, distortion and power consumption can be calculated, plotted and exported for signal chains with up to 50 stages. ADIsimRF also includes an extensive data base of device models for ADI’s RF and mixed signal components.
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.