7B31

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7B31 技术参数

7B31

GENERAL DESCRIPTION

front-end circuitry power is supplied by a DC/DC converter.

The 7B31 is a single-channel signal conditioning module that

interfaces, amplifies and filters unipolar and bipolar voltage

inputs and provides a protected precision output of either +1 V

to +5 V or 0 V to +10 V. Model 7B31 features a nonlinearity of

+0.02% maximum and an accuracy of +0.1% maximum

(+0.01% typical). To accurately measure low level signals in

electrically noisy environments, 1500 V rms of galvanic

transformer-based isolation with a common mode rejection

(CMR) of 120 dB @ 50/60 Hz and a normal mode rejection

(NMR) of 60 dB @ 50/60 Hz are provided. Rated to operate

with a nominal +24 VDC supply, Model 7B31 is mix-and-match

and hot-swappable with other 7B Series input modules, so it can

be inserted or removed from any socket in the same backplane

without disturbing system power.

The output section contains a two-pole low pass filter (-3 dB @

3 Hz), a buffer amplifier and a power oscillator. The two-pole

output filter and subsequent buffer ensures that a low noise, low

impedance (<1Ω) signal is available at the output to drive loads

of 2 kΩ minimum.

The floating differential input of Model 7B31 is fully protected

up to 120 V rms line voltage. A one-pole 3 Hz filter

preconditions the input signal prior to amplification by a low

drift input (1500 V rms input-to-output and power). Isolated

Figure 2

Rev. 0 | Page 2 of 8

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型号	品牌	描述	获取价格	数据表
7B31-01-1	ADI	Isolated Voltage Input	获取价格
7B31-01-1	ROCHESTER	SPECIALTY ANALOG CIRCUIT, SMA6, PACKAGE-6	获取价格
7B31-01-2	ADI	Isolated Voltage Input	获取价格
7B31-02-1	ADI	Isolated Voltage Input	获取价格
7B31-02-2	ADI	Isolated Voltage Input	获取价格
7B31-02-2	ROCHESTER	SPECIALTY ANALOG CIRCUIT, SMA6, PACKAGE-6	获取价格