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NI (National Instruments) · PXI

PXIe-7856

The NI PXIe-7856 is a PXI Express multifunction reconfigurable I/O module with a user-programmable Kintex-7 160T FPGA. It provides 8 analog inputs, 8 analog outputs, and 48 bidirectional digital channels.

ManufacturerNI (National Instruments)

ModelPXIe-7856

Part Number784145-01

Product TypePXIe, Kintex-7 160T FPGA, 1 MS/s, PXI Multifunction Reconfigurable I/O Module

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Maximum Sample Rate1 MS/s

Bus ConnectorPXI Express

Maximum Clock Rate80 MHz

Bidirectional Digital Channels48

Digital I/O Logic Levels1.2 V, 1.5 V, 1.8 V, 2.5 V, 3.3 V

Dynamic RAM (DRAM)0 MB

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Overview

Product overview

Key product information and technical features.

The PXIe-7856 combines analog and digital I/O with a reconfigurable Kintex-7 160T FPGA for onboard processing and control of I/O timing and synchronization. It fits into the NI PXI ecosystem through a PXI Express bus interface.

The analog section provides 16-bit input and output resolution, simultaneous sampling, and a maximum sample rate of 1 MS/s. Input ranges are ±1 V, ±2 V, ±5 V, and ±10 V; the analog output range is ±10 V. Dedicated ADCs allow independent channel timing and triggering.

The digital section offers 48 bidirectional, single-ended channels with logic levels from 1.2 V to 3.3 V. The module also supports peer-to-peer streaming, has a VHDCI front connection, and receives power from the bus.

User-programmable Kintex-7 160T FPGA supports onboard processing and direct control of I/O timing and synchronization.
Eight 16-bit analog inputs support single-ended or differential operation with selectable ±1 V, ±2 V, ±5 V, and ±10 V ranges.
Dedicated ADCs support simultaneous sampling, independent timing, multirate sampling, and individual channel triggering.
Eight 16-bit analog outputs provide a ±10 V output range and a maximum analog update rate of 1 MS/s.
48 bidirectional digital channels support single-ended signaling at 1.2 V, 1.5 V, 1.8 V, 2.5 V, and 3.3 V logic levels.
Bus-powered PXI Express design supports peer-to-peer streaming.

Verified specifications

Technical data

Verified product specifications.

Maximum Sample Rate	1 MS/s
Bus Connector	PXI Express
Maximum Clock Rate	80 MHz
Number of Bidirectional Digital Channels	48
Digital I/O Logic Levels	1.2 V, 1.5 V, 1.8 V, 2.5 V, 3.3 V
Dynamic RAM (DRAM)	0 MB
FPGA	Kintex-7 160T
Analog Input Voltage Range	-1 V to 1 V -2 V to 2 V -5 V to 5 V -10 V to 10 V
Supports Peer To Peer Streaming	Yes
Number of Analog Input Channels	8
Number of Analog Output Channels	8
Supported Hardware Platform	PXI
Reconfigurable	Yes
Maximum Digital Update Rate	12.5 ns
Maximum Analog Update Rate	1 MS/s
Analog Output Voltage Range	-10 V to 10 V
Simultaneous Sampling	Yes
Analog Input Absolute Accuracy	2.28 mV
Conformal Coated	No
Output Voltage Range	0 V to 3.3 V
Enclosed	Yes
Front Connection Type	VHDCI
Number of External Clock Inputs	1
Signaling Type	Single-Ended
Maximum Number of Single-Ended Analog Input Channels	8
Maximum Number of Differential Analog Input Channels	8
Analog Input Resolution	16 bits
Number of Voltage Output Channels	8
Analog Output Resolution	16 bits
Operating Temperature Range	0 °C to 55 °C
Electrical Signal Measured	Voltage
Supported Power Input	Bus Powered
NI part numbers	784145-01

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PXIe-7856

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FAQ

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Product-specific answers based on available technical information.

What FPGA does the PXIe-7856 use?

The PXIe-7856 uses a user-programmable, reconfigurable Kintex-7 160T FPGA.

How many analog and digital channels does it provide?

The module has 8 analog input channels, 8 analog output channels, and 48 bidirectional digital channels. Both analog input and analog output resolution are 16 bits.

What analog voltage ranges are supported?

Analog inputs support ±1 V, ±2 V, ±5 V, and ±10 V ranges. The analog output range is ±10 V.

Does the PXIe-7856 support simultaneous sampling?

Yes. It supports simultaneous sampling and has dedicated ADCs for independent channel timing and triggering. Its maximum sample rate is 1 MS/s.

Which digital logic levels are supported?

The 48 bidirectional digital channels support single-ended signaling with 1.2 V, 1.5 V, 1.8 V, 2.5 V, and 3.3 V logic levels.

Does the PXIe-7856 support peer-to-peer streaming?

Yes. Peer-to-peer streaming support is listed for the PXIe-7856. Verify the complete system configuration and participating devices before integration.