Features and Benefits
- 9dB Power Conversion Gain
- 32dBm Output IP3
- 15.5dB Range IF DVGA in 0.5dB Steps
- IF Frequency Range Up to 900MHz
- Reduced Power Mode
- 3.3V Single Supply
- Simple SPI for Fast Development
- –40°C to 105°C Operation (TC)
- Very Small Solution Size
- 32-Lead (5mm × 5mm) QFN Package
The LTC5556 dual programmable gain downconverting mixer is ideal for diversity and MIMO receivers that require precise gain setting. Each channel incorporates an active mixer and a digital IF VGA with 15.5dB gain control range. The IF gain of each channel is programmed in 0.5dB steps through the SPI.
Enable pins for each channel allow fast turn-on and shutdown. A reduced power mode is also available.
The device has the same functionality as the LTC5566, but the mixers are optimized for a higher 3GHz to 7GHz RF frequency range and the IF is optimized for use up to 900MHz. The mixers may be used down to 1.5GHz, or up to 8GHz with degraded performance.
|PART NUMBER||OPTIMUM RF RANGE||IF RANGE|
|LTC5556||3GHz to 7GHz||1MHz to 900MHz|
|LTC5566||300MHz to 4.5GHz||1MHz to 500MHz|
- 4G and 5G MIMO Receivers
- 5.1GHz to 5.9GHz LTE-U
- Distributed Antenna Systems (DAS)
- Network Test/Monitoring Equipment
- Fixed Satellite Services
Product Lifecycle Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (1)
Demonstration circuit 2693A is optimized for evaluation of the LTC®5556 dual programmable gain downconverting mixer. Each channel incorporates an active mixer and a digital IF VGA with 15.5dB gain control range. The IF gain of each channel is independently programmable through the SPI in 0.5dB steps. Its single-ended RF ports have a range from 1.5GHz to 7GHz. The LO port is internally matched to 50Ω from 500MHz to 8GHz with 9dB return loss. The differential IF port is usable from 1MHz to 1000MHz. There is a reduced power mode available through the SPI or RP pin, which lowers the total current consumption by 25%.
Tools & Simulations
Linduino is Analog Devices’ Arduino compatible system for developing and distributing firmware libraries and example code for our integrated circuits. Each Linduino-supported product includes an example main program, defined in the LTSketchbook/Part Number folder and driver code, defined in the LTSketchbook/libraries folder.
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.