PXI-7841

The PXI-7841 is a reconfigurable PXI multifunction I/O module with a Virtex-5 LX30 FPGA, 8 analog inputs, 8 analog outputs and 96 bidirectional digital channels.

ManufacturerNI (National Instruments)

ModelPXI-7841

Part Number780337-01

Product TypeVirtex-5 LX30 FPGA, 200 kS/s PXI Multifunction Reconfigurable I/O Module

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Maximum Sample Rate200 kS/s

Bus ConnectorPXI Hybrid

Maximum Clock Rate40 MHz

Bidirectional Digital Channels96

Digital I/O Logic Levels3.3 V, 5 V

Dynamic RAM (DRAM)0 MB

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Overview

Product overview

Key product information and technical features.

The PXI-7841 combines analog input, analog output and digital I/O with a user-programmable FPGA for onboard processing and direct control of I/O signals. Its analog inputs support simultaneous sampling, and both analog input and output conversion have 16-bit resolution.

The retained NI part-number record identifies 780337-01 as the PXI-7841R R Series Multifunction Device. This catalog retains the PXI-7841 model name used by the NI product page. The module uses a PXI Hybrid bus connector and has a listed maximum clock rate of 40 MHz.

Reconfigurable Virtex-5 LX30 FPGA supports direct I/O timing and synchronization control.
Eight 16-bit analog inputs support simultaneous sampling and a -10 V to 10 V input range.
Eight 16-bit analog outputs provide a -10 V to 10 V range and a maximum analog update rate of 1 MS/s.
Ninety-six bidirectional digital channels support listed 3.3 V and 5 V logic levels.
VHDCI front connection and a specified operating temperature range of 0 °C to 55 °C.

Verified specifications

Technical data

Verified product specifications.

Maximum Sample Rate	200 kS/s
Bus Connector	PXI Hybrid
Maximum Clock Rate	40 MHz
Number of Bidirectional Digital Channels	96
Digital I/O Logic Levels	3.3 V, 5 V
Dynamic RAM (DRAM)	0 MB
FPGA	Virtex-5 LX30
Analog Input Voltage Range	-10 V to 10 V
Supports Peer To Peer Streaming	No
Number of Analog Input Channels	8
Number of Analog Output Channels	8
Supported Hardware Platform	PXI
Reconfigurable	Yes
Maximum Digital Update Rate	25 ns
Maximum Analog Update Rate	1 MS/s
Analog Output Voltage Range	-10 V to 10 V
Simultaneous Sampling	Yes
Analog Input Absolute Accuracy	3.97 mV
Conformal Coated	No
Output Voltage Range	0 V to 3.3 V
Enclosed	Yes
Front Connection Type	VHDCI
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	780337-01