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LimeSDR Mini 2.0 is an upgraded, drop-in replacement for LimeSDR Mini, a hardware platform for developing and prototyping high-performance and logic-intensive digital and RF designs that use an FPGA coupled with Lime Microsystems’ LMS7002M RF transceiver.
Since we first introduced LimeSDR over six years ago, and LimeSDR Mini about a year later, we’ve shipped tens of thousands of units to engineers around the world for use in everything from satellite ground stations to digital television. Whether you’re a hobbyist using LimeSDR or LimeSDR Mini to learn about software defined radio, or a company integrating hundreds of units into your commercial product, we’ve been thrilled at the breadth and depth of LimeSDR Mini applications you’ve come up with. Which is why it’s been especially difficult to watch all of this come to a grinding halt over the last year due to the global electronics and chip shortage.
Rather than wait indefinitely and hope the supply chain rewinds to a time we’re unlikely to see again soon, we went back to the drawing board. The result is LimeSDR Mini 2.0, a software defined radio with the same form factor as the original LimeSDR Mini, the same LMS7002 RF transceiver, but a new FPGA - the Lattice ECP5. Not only is the ECP5 more readily available than the Intel MAX10 FPGA used in the previous design, but it has an extensive set of open source tools and a great community of developers.
|LimeSDR Mini 2.0||LimeSDR Mini||LimeSDR||HackRF One||Ettus B200||Ettus B210||BladeRF x40||RTL-SDR|
|RF Transceiver||LMS7002M||LMS7002M||LMS7002M||MAX5864, MAX2837, RFFC5072||AD9364||AD9361||LMS6002M||RTL2832U|
|Frequency Range||10 MHz - 3.5 GHz||10 MHz - 3.5 GHz||100 kHz - 3.8 GHz||1 MHz - 6 GHz||70 MHz - 6 GHz||70 MHz - 6 GHz||300 MHz - 3.8 GHz||22 MHz - 2.2 GHz|
|RF Bandwidth||40 MHz||40 MHz||61.44 MHz||20 MHz||61.44 MHz||61.44 MHz||40 MHz||3.2 MHz|
|Sample Depth||12 bits||12 bits||12 bits||8 bits||12 bits||12 bits||12 bits||8 bits|
|Sample Rate||30.72 MSPS||30.72 MSPS||61.44 MSPS||20 MSPS||61.44 MSPS||61.44 MSPS||40 MSPS||3.2 MSPS|
|Programmable Logic||Lattice ECP5||Intel MAX 10||Intel Cyclone IV||Xilinx CoolRunner-II||Xilinx Spartan-6||Xilinx Spartan-6||Intel Cyclone IV||N/A|
|Logic Gates||44K||16K||40k||64 macrocell CPLD||75k||100k||40k (115k avail)||N/A|
|Interface||USB 3.0||USB 3.0||USB 3.0||USB 2.0||USB 3.0||USB 3.0||USB 3.0||USB 2.0|
|Open Source||Full||Full||Full||Full||Schematic, Firmware||Schematic, Firmware||Schematic, Firmware||No|
|Oscillator Precision||±1 ppm initial, ±4 ppm stable||±1 ppm initial, ±4 ppm stable||±1 ppm initial, ±4 ppm stable||±20 ppm||±2 ppm||±2 ppm||±1 ppm||?|
|Transmit Power||max 10 dBm (depending on freq.)||max 10 dBm (depending on freq.)||max 10 dBm (depending on freq.)||-10 dBm+ (15 dBm @ 2.4 GHz)||10 dBm+||10 dBm+||6 dBm||N/A|
We pride ourselves on the openness of LimeSDR Mini 2.0. Before going to production, we will release the following source files:
The SDR community has has used Lime products for a wide range of applications, such as:
Since LimeSDR Mini 2.0 has an FPGA with even more logic gates than its predecessors, we expect the number and types of applications to increase accordingly. We’ll share some examples as the campaign progresses.
LimeSDR Mini 2.0 is compatible with the same acrylic enclosure and antennas as the original LimeSDR Mini. Note that the third-party Lime AC Mini Case is not compatible with LimeSDR Mini 2.0 since the heights of some of the ICs on LimeSDR Mini 2.0 is slightly different than those on LimeSDR Mini, which causes the case not to close completely.
"[Lime SDR Mini 2.0] uses a larger field-programmable gate array (FPGA) for projects looking to perform operations on-device and ease the load on the host processor."
"[Lime] have replaced the Intel MAX 10 FPGA with a Lattice Semiconductor ECP5. This dramatically increases the number of programmable logic gates on-board from 16k to 44k."
"It’s the end of an era: the original LimeSDR Mini is officially being retired. However, there is nothing to mourn as a drop-in replacement is being launched in its wake. "
Produced by Lime Microsystems in Guildford, England.
Sold and shipped by Crowd Supply.
From the Crowd Supply Basics project.
A TG.09 4G/3G/2G cellular hinged SMA(M) mount monopole antenna.
From the LimeSDR Mini project.
Keep your LimeSDR Mini safe in this custom acrylic case.
From the LimeSDR Mini project.
A collaboration with Seeed Studio, this 21-piece kit comes with a GrovePi+, an acrylic base plate, a USB extension cable, and a wide variety of Grove sensors and actuators: Ultrasonic Ranger, Temp&Humi Sensor, Temperature Sensor, Rotary Angle Sensor, Button, Light Sensor v1.2, 3-Axis Digital Accelerometer (±1.5 g), Relay, Sound Sensor, LCD RGB Backlight, Buzzer, Red LED, LED Bar 2.0, Touch Sensor, and Piezo Vibration Sensor. Compatible with Scratch. NOTE: LimeSDR Mini, Raspberry Pi, power supply, and microSD card are NOT INCLUDED.
Guildford, England · LimeMicro · myriadrf · limemicro.com
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