The National Instruments PXIe-7857 is a multifunction reconfigurable I/O module with 48 DIO channels, 8 AI and AO channels, a Kintex-7 160T FPGA, SAR ADC, 16-bit
The National Instruments PXIe-7857 is a versatile PXI Multifunction Reconfigurable I/O Module identified by part numbers PXIe-7857R and 784146-01, featuring 48 digital I/O channels and 8 analog input and output channels each. This module is powered by a Kintex-7 160T FPGA, ensuring high-speed and flexible operation, and uses a Successive Approximation Register (SAR) ADC for precise analog-to-digital conversion.
The analog inputs boast impressive characteristics with 16-bit resolution, 1 µs conversion time, and variable impedance based on powered state—1.25 GΩ || 2 pF when powered on, and a minimum of 4 kΩ when powered off. These inputs can sample at a rate of 1 MS/s, allowing for rapid data acquisition. The module’s analog outputs are driven by an Enhanced R-2R DAC with 16-bit resolution, delivering outputs across a range of ±10 V.
In terms of connectivity, the PXIe-7857 supports DC coupling and provides user-configurable power-on states for greater flexibility in various application scenarios. The digital I/O connectivity is facilitated by two LVTTL and LVCMOS compatible connectors, with a 3.3 V default setting and the capability for users to select the logic family via software.
Two LVTTL, LVCMOS compatible connectors, 3.3 V default, software-selectable logic
DIO Output Current
Question 1: What are the impedance characteristics of the National Instruments PXIe-7857’s analog inputs when the module is powered on and when it is powered off? Answer 1: When the National Instruments PXIe-7857 module is powered on, the impedance of the analog inputs is 1.25 GΩ in parallel with 2 pF, and when the module is powered off, the impedance is a minimum of 4 kΩ.
Question 2: What conversion technology and resolution do the analog inputs of the National Instruments PXIe-7857 module utilize, and how does the impedance vary with its power state? Answer 2: The National Instruments PXIe-7857 module is a PXI Multifunction Reconfigurable I/O Module equipped with 48 digital I/O channels, 8 analog input and output channels, powered by a Kintex-7 160T FPGA for high-speed and flexible operation, and utilizes a Successive Approximation Register (SAR) ADC for precise analog-to-digital conversion, with the analog inputs featuring a 16-bit resolution, 1 µs conversion time, and a
Question 3: What are the specifications and features of the National Instruments PXIe-7857 I/O Module, including its FPGA type, ADC technology, resolution, and analog and digital channel capabilities? Answer 3: The National Instruments PXIe-7857 I/O Module is equipped with a Kintex-7 160T FPGA, uses a Successive Approximation Register (SAR) ADC for precise analog-to-digital conversion, offers a 16-bit resolution, and provides 48 digital I/O channels as well as 8 analog input and output channels, with the analog inputs featuring a 1 µs conversion time, a sampling rate of 1 MS/s, and variable impedance, and the
Question 4: What are the specifications and features of the National Instruments PXIe-7857 Multifunction Reconfigurable I/O Module, including details about its FPGA, ADC, I/O channels, and connectivity options? Answer 4: The analog inputs of the National Instruments PXIe-7857 module utilize a Successive Approximation Register (SAR) ADC for conversion with a 16-bit resolution, and the impedance varies with its power state, offering 1.25 GΩ || 2 pF when powered on and a minimum of 4 kΩ when powered off.
Question 5: What are the key features and capabilities of the National Instruments PXIe-7857 module, particularly in terms of its digital and analog I/O specifications, FPGA type, and ADC technology used for signal conversion? Answer 5: The National Instruments PXIe-7857 Multifunction Reconfigurable I/O Module features 48 digital I/O channels and 8 analog input and output channels, powered by a Kintex-7 160T FPGA for high-speed operation, and uses a Successive Approximation Register (SAR) ADC for precise analog-to-digital conversion with 16-bit resolution and 1 µs conversion time. The analog inputs have a sampling rate of 1 MS/s and variable impedance,
