---
title: Specifications table
description: The specifications table of Red Pitayas STEMlab 125-10, STEMlab 125-14, SDRlab 122-16 and SIGNALlab 250-12.
---

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# COMPARE RED PITAYA PRODUCTS

|   | [STEMlab 125-10](https://www.redpitaya.com/Catalog/p1/stemlab-125-10-starter-kit?cat=c95) | [STEMlab 125-14](https://www.redpitaya.com/Catalog/p20/stemlab-125-14-starter-kit?cat=c96) | [SDRlab 122-16](https://www.redpitaya.com/Catalog/p52/sdrlab-122-16-standard-kit?cat=c99) | [SIGNALlab 250-12](https://www.redpitaya.com/Catalog/p70/signallab-250-12?cat=c99) |
| --- | --- | --- | --- | --- |
| - **Basic** |  |  |  |  |
| Processor | Dual-Core ARM Cortex-A9 MPCore | Dual-Core ARM Cortex-A9 MPCore | Dual-Core ARM Cortex-A9 MPCore | Dual-Core ARM ARM Cortex-A9 MPCore |
| FPGA | Xilinx Zynq 7010 | Xilinx Zynq 7010 | Xilinx Zynq 7020 | Xilinx Zynq 7020 |
| RAM | 256MB (2Gb) | 512MB (4Gb) | 512MB (4Gb) | 1GB (8Gb) |
| System memory | Micro SD up to 32GB | Micro SD up to 32GB | Micro SD up to 32GB | Micro SD up to 32GB |
| - **Connectivity** |  |  |  |  |
| Ethernet | 1 Gbit | 1 Gbit | 1 Gbit | 1 Gbit |
| USB | USB 2.0 | USB 2.0 | USB 2.0 | 2x USB 2.0 |
| WIFI | using Wi-Fi dongle | using Wi-Fi dongle | using Wi-Fi dongle | using Wi-Fi dongle |
| -  **RF inputs** |  |  |  |  |
| Channels | 2 | 2 | 2 | 2 |
| Sample rate | 125MS/s | 125MS/s | 122.88MS/s | 250MS/s |
| ADC resolution | 10 bit | 14 bit | 16 bit | 12 bit |
| Full-scale voltage range | ± 1V / ± 20V | ± 1V / ± 20V | ± 0.25V / -2 dBm | ± 1V / ± 20V \*\* |
| Input coupling | DC | DC | AC | AC/DC \*\* |
| Bandwith | DC-50MHz | DC-60MHz | 300 kHz - 550 MHz | DC - 60MHz |
| Input impedance | 1M Ω | 1M Ω | 50 Ω | 1M Ω |
| - **RF outputs** |  |  |  |  |
| Channels | 2 | 2 | 2 | 2 |
| Sample rate | 125MS/s | 125MS/s | 122.88MS/s | 250MS/s |
| ADC resolution | 10 bit | 14 bit | 16 bit | 12 bit |
| Full-scale voltage range | ± 1V | ± 1V | ± 0.5V / +4 dBm | ± 1V / ± 5V (into 50 ohm load) \*\* ± 2V / ± 10V (Hi-Z load) \*\* |
| Load impedance | 50 Ω | 50 Ω | 50 Ω | 50 Ω |
| Shortcut protection | Yes | Yes | N/A, RF transformer & AC-coupled | Yes |
| Typical raising/falling time | 2V / 10ns | 2V / 10ns | N/A   | 10V / 17ns |
| Bandwith | DC - 60MHz | DC - 60MHz | 300 kHz - 60MHz | DC - 60MHz |
| - **Extension connector** |  |  |  |  |
| Digital IOs | 16 | 16 | 16 | 16 |
| Analog inputs | 4 channels 0-3.5V 12bit | 4 channels 0-3.5V 12bit | 4 channels 0-3.5V 12bit | 4 channels 0-3.5V 12bit |
| Analog outputs | 4 channels 0-1.8V 12bit | 4 channels 0-1.8V 12bit | 4 channels 0-1.8V 12bit | 4 channels 0-1.8V 12bit |
| Communication interfaces | I2C, UART, SPI | I2C, UART, SPI | I2C, UART, SPI | I2C, UART, SPI, USB |
| Available voltages | +5V, +3.3V, -4V | +5V, +3.3V, -4V | +5V, +3.3V, -4V | +5V, +3.3V, -4V |
| - **Synchronization** |  |  |  |  |
| Trigger input | through extension connector | through extension connector | through extension connector | through BNC connector |
| Daisy chain connection | N/A | over SATA connection | over SATA connection | over eSATA connection |
| Ref. clock input | N/A | N/A | N/A | through BNC connector |

                                                                                                                                                                                                                                                              \*\*software selectable

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