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| 型号： | 7B35-01-2 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 2/8页 |
| 文件大小： | 0K |
| 描述： | MODULE ISOL PROCESS I-IN NON-LIN |
| 标准包装： | 4 |
| 模块/板类型： | 模拟信号调节器 |
| 适用于相关产品： | 模拟 I/O 系统 |
7B35
GENERAL DESCRIPTION
The 7B35 is a single-channel signal conditioning current input
module that interfaces with two-wire transmitters, providing an
isolated protected precision output of either +1 V to +5 V or +2
V to +10 V. Model 7B35 features an isolated 24 VDC loop power
supply for driving the transmitter. 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 105 dB @ 50/60 Hz is provided. Rated to
isolated voltage provided by the 7B35 is between 13 VDC and
34 VDC for loop currents between 4 mA and 20 mA and supply
voltages between 20.4 VDC and 26.4 VDC. The output section
contains a two-pole low-pass filter (-3 dB @ 100 Hz), a buffer
amplifier and power oscillator. The two-pole output filter and
subsequent buffer ensures that a low noise, low impedance
(<1 ? ) signal is available at the output to drive loads down to
2k ? .
operate with a nominal +24 VDC supply, Model 7B35 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 two input pins of Model 7B35 are each fully protected up to
120 V rms. The current input signal is converted to a voltage,
then filtered by a one-pole 100 Hz filter. Amplitude modulation
is used to implement transformer isolation (1500 V rms input-
to-output and power). Isolated front-end circuitry power is
supplied by a DC/DC converter. The isolated transmitter loop
power supply is unregulated and will provide a voltage that is
proportional to the voltage used to power the 7B35 module. The
Figure 2
Rev. 0 | Page 2 of 8
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| 7B-36.000MAAE-T | 制造商:TXC Corporation 功能描述:CRYSTAL 36.000MHZ 12PF SMD |
| 7B-36.000MAAJ-T | 功能描述:晶体 36.000MHz 30ppm -20 +70C 18pF RoHS:否 制造商:AVX 频率:26 MHz 容差: 频率稳定性:50 PPM 负载电容:8 pF 端接类型:SMD/SMT 封装 / 箱体:1210 (3225 metric) 工作温度范围:- 40 C to + 150 C 尺寸:2.5 mm W x 3.2 mm L x 0.85 mm H 封装:Reel |
| 7B-36.000MAAJ-T | 制造商:TXC Corporation 功能描述:CRYSTAL SEAM 36MHZ 18PF SMD |
| 7B-36.000MBBK-T | 制造商:TXC Corporation 功能描述:CRYSTAL 36.000MHZ 20PF SMD 制造商:TXC Corporation 功能描述:CRYSTAL, 36MHZ, 20PF, 5MM x 3.2MM; Frequency:36MHz; Frequency Tolerance: 50ppm; Load Capacitance:20pF; Operating Temperature Min:-40C; Operating Temperature Max:85C; Crystal Mounting Type:SMD; No. of Pins:4 ;RoHS Compliant: Yes |
| 7B-36.000MEEQ-T | 功能描述:晶体 36.000MHz 10ppm -20 +70C 10pF RoHS:否 制造商:AVX 频率:26 MHz 容差: 频率稳定性:50 PPM 负载电容:8 pF 端接类型:SMD/SMT 封装 / 箱体:1210 (3225 metric) 工作温度范围:- 40 C to + 150 C 尺寸:2.5 mm W x 3.2 mm L x 0.85 mm H 封装:Reel |
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