Red Pitaya STEMlab 125-14 product variation comparison

Red Pitaya nowadays has a wide variety of products for different purposes and segments. Nevertheless, up to this day, Red Pitaya's original product STEMlab 125-14 is still the best-seller. In the past year, we have received many requests for clients to make small tweaks to the existing product and we cam up with quite a few variations of the original STEMlab 125-14. Here' s a quick overview of each variant and you can compare the technical specifications in the table below.

Red Pitaya STEMlab 125-14 Low Noise

STEMlab 125-14 Low Noise is based on a STEMlab 125-14 board that is populated with additional linear analog power for analog power supplies to reduce RF inputs and outputs noise and consequently increase ENOB.

Red Pitaya STEMlab 125-14 External Clock

STEMlab 125-14 External clock is based on the STEMlab 125-14 model that is modified to be used with an external clock oscillator, which is important especially for RF applications that operate at other frequencies, require better quality clock or clock synchronization.

With this modification, users can provide their own clock for the Red Pitaya device through the E2 extension connector.

Red Pitaya STEMlab 125-14 Z7020 Low Noise

STEMlab 125-14Z7020 Low Noise is based on a STEMlab 125-14 Z7020 board that is populated with additional linear analog power for analog power supplies to reduce RF inputs and outputs noise and consequently increase ENOB.

Comes with Xilinx Zynq 7020 SoC.

Red Pitaya STEMlab 125-14 ISO17025

Based on the STEMlab 125-14 Starter kit and it comes with individual ISO17025 certificate.

BASIC

	STEMlab 125-10	STEMlab 125-14 STEMlab 125-14 LN STEMlab 125-14 ext. clk	STEMlab 125-14-Z7020-LN	SDRlab 122-16 SDRlab 122-16 ext clk	SIGNALlab 250-12
Processor	DUAL CORE ARM CORTEX A9	DUAL CORE ARM CORTEX A9	DUAL CORE ARM CORTEX A9	DUAL CORE ARM CORTEX A9	DUAL CORE ARM CORTEX A9
FPGA	FPGA Xilinx Zynq 7010 SOC	FPGA Xilinx Zynq 7010 SOC	FPGA Xilinx Zynq 7020 SOC	FPGA Xilinx Zynq 7020 SOC	FPGA Xilinx Zynq 7020 SOC
RAM	256MB (2Gb)	512MB (4Gb)	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	Micro SD up to 32GB
Console connection	USB to serial converter required	micro USB	micro USB	micro USB	USB-C
Power connector	Micro USB	Micro USB	Micro USB	Micro USB	Power Jack RJ45 (PoE version only)
Power consumption	5V, 1,5A max	5V, 2A max	5V, 2A max	5V, 2A max	24V, 0.5A max

CONNECTIVITY

	STEMlab 125-10	STEMlab 125-14 STEMlab 125-14 LN STEMlab 125-14 ext. clk	STEMlab 125-14-Z7020-LN	SDRlab 122-16 SDRlab 122-16 ext clk	SIGNALlab 250-12
Ethernet	1Gbit	1Gbit	1Gbit	1Gbit	1Gbit
USB	USB 2.0	USB 2.0	USB 2.0	USB 2.0	2 x USB 2.0
WIFI	requires WIFI dongle	requires WIFI dongle	requires WIFI dongle	requires WIFI dongle	requires WIFI dongle
Synchronisation	/	Daisy chain connector (up to 500 Mbps)	Daisy chain connector (up to 500 Mbps)	Daisy chain connector (up to 500 Mbps)	Daisy chain connector (up to 500 Mbps)

RF INPUTS

	STEMlab 125-10	STEMlab 125-14 STEMlab 125-14 LN STEMlab 125-14 ext. clk	STEMlab 125-14-Z7020-LN	SDRlab 122-16 SDRlab 122-16 ext clk	SIGNALlab 250-12
RF input channels	2	2	2	2	2
Sample rate	125 MS/s	125 MS/s	125 MS/s	122.88 MS/s	250 MS/s
ADC resolution	10 bit	14 bit	14 bit	16 bit	12 bit
Input impedance	1MOhm/10pF	1MOhm/10pF	1MOhm/10pF	50 Ohm	1MOhm
Full scale voltage range	±1V (LV) and ±20V (HV)	±1V (LV) and ±20V (HV)	±1V (LV) and ±20V (HV)	0.5Vpp/-2dBm	+-1V / +-20V (software selectable)
Input coupling	DC	DC	DC	AC	AC / DC (software selectable)
Absolute max. Input voltage range	30V	30V	30V	DC max 50V (AC-coupled) 1 Vpp for RF	30V
Input ESD protection	Yes	Yes	Yes	Yes	Yes
Overload protection	Protection diodes	Protection diodes	Protection diodes	DC voltage protection	Protection diodes
Bandwidth	DC-50MHz	DC-60MHz	DC-60MHz	300 kHz - 550 MHz	DC - 60MHz

RF OUTPUTS

	STEMlab 125-10	STEMlab 125-14 STEMlab 125-14 LN STEMlab 125-14 ext. clk	STEMlab 125-14-Z7020-LN	SDRlab 122-16 SDRlab 122-16 ext clk	SIGNALlab 250-12
RF output channels	2	2	2	2	2
Sample rate	125 MS/s	125 MS/s	125 MS/s	122.88 MS/s	250 MS/s
DAC resolution	10 bit	14 bit	14 bit	14 bit	14 bit
Load impedance	50 Ohm	50 Ohm	50 Ohm	50 Ohm	50 Ohm
Voltage range	±1V	±1V	±1V	1Vpp/ +4 dBm	+-2V / +-10V (Hi-Z load) (software selectable)
Short circut protection	Yes	Yes	Yes	N/A, RF transformer & AC-coupled	Yes
Connector type	SMA	SMA	SMA	SMA	BNC
Output slew rate	2V / 10ns	2V / 10ns	2V / 10ns	N/A	10V / 17ns
Bandwidth	DC-50MHz	DC-60MHz	DC-60MHz	300 kHz - 60 MHz	DC - 60MHz

EXTENSION CONNECTOR

	STEMlab 125-10	STEMlab 125-14 STEMlab 125-14 LN STEMlab 125-14 ext. clk	STEMlab 125-14-Z7020-LN	SDRlab 122-16 SDRlab 122-16 ext clk	SIGNALlab 250-12
Digital IOs	16	16	16	16	16
Analog inputs	4	4	4	4	4
Analog inputs voltage range	0-3,5V	0-3,5V	0-3,5V	0-3,5V	0-3,5V
Sample rate	100kS/s	100kS/s	100kS/s	100kS/s	100kS/s
Resolution	12bit	12bit	12bit	12bit	12bit
Analog outputs	4	4	4	4	4
Analog outputs voltage range	0-1,8V	0-1,8V	0-1,8V	0-1,8V	0-1,8V
Communication interfaces	I2C, SPI, UART	I2C, SPI, UART	I2C, SPI, UART	I2C, SPI, UART	I2C, SPI, UART, USB
Available voltages	+5V,+3,3V,-4V	+5V,+3,3V,-4V	+5V,+3,3V,-4V	+5V,+3,3V,-4V	+5V,+3,3V,-4V
external ADC clock	N/A	yes	yes	yes	yes

SYNCHRONISATION

	STEMlab 125-10	STEMlab 125-14 STEMlab 125-14 LN STEMlab 125-14 ext. clk	STEMlab 125-14-Z7020-LN	SDRlab 122-16 SDRlab 122-16 ext clk	SIGNALlab 250-12
Trigger input	through extension connector	through extension connector	through extension connector	through extension connector	through BNC connector
Daisy chain connection	N/A	over SATA connection	over SATA connection	over SATA connection	over SATA connection
Ref. clock input	N/A	N/A	N/A	N/A	through BNC connector