AD694JN
Category: IC Chips
Description: 4.20 mA Transmitter
Price range ($)
5.86740 10.68480
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AD694JN
AD694JN has several brands around the world that may have alternate names for AD694JN due to regional differences or acquisition. AD694JN may also be known as the following names:
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Description
AD694JN
Stock:0 |
Analog Devices |
4.20 mA Transmitter |
≥1: US $10.68480 US $9.61632 ≥5: US $10.15056 US $9.13550 ≥10: US $9.61632 US $8.65469 ≥20: US $9.34920 US $8.41428 ≥50: US $9.08208 US $8.17387 ≥100: US $8.81496 US $7.93346 ≥200: US $8.54784 US $7.69306 ≥500: US $8.44099 US $7.59689 ≥1000: US $8.28072 US $7.45265
More:
Inquiry
|
Out of stock |
AD694JN
Stock:272 |
Analog Devices 12+ |
N/A |
≥1: US $8.04672 US $7.24205
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Inquiry
|
AD694JN
Stock:16 |
Analog Devices 08+ |
4.20 mA Transmitter |
≥1: US $6.84530 US $6.16077
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Inquiry
|
AD694JN
Stock:10 |
ADI 0707+ |
4.20 mA Transmitter |
≥1: US $5.86740 US $5.51536
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Inquiry
|
FEATURES
4-20 mA, 0-20 mA Output Ranges
Precalibrated Input Ranges:
0V to 2V,0V to 10V
Precision Voltage Reference
Programmable to 2.000V or 10.000V
Single or Dual Supply Operation
Wide Power Supply Range: 4.5 V to 36V
Wide Output Compliance
Input Buffer Amplifier
Open-Loop Alarm
Optional External Pass Transistor to Reduce
Self-Heating Errors
0.002% Typ Nonlinearity
PRODUCT DESCRIPTION
The AD694 is a monolithic current transmitter that accepts high level signal inputs to drive a standard 4-20 mA current loop for the control of valves, actuators, and other devices commonly used in process control. The input signal is buffered by an input amplifier that can be used to scale the input signal or buffer the output from a current mode DAC. Precalibrated input spans of o V to 2 V and 0 V to 10 v are selected by simple pin strapping; other spans may be programmed with external resistors.
The output stage compliance extends to within 2V of Vs and its special design allows the output voltage to extend below common in dual supply operation.An alarm warns of an open 4-20 mA loop or noncompliance of the output stage.
Active laser trimming of the AD694's thin film resistors results in high levels of accuracy without the need for additional adjustments and calibration.An external pass transistor may be used with the AD694 to off-load power dissipation, extending the temperature range of operation.
The AD694 is the ideal building block for systems requiring noise immune 4-20 mA signal transmission to operate valves, actuators, and other control devices, as well as for the transmission of process parameters such as pressure, temperature, or flow. It is recommended as a replacement for discrete designs in a variety of applications in industrial process control, factory automation, and system monitoring.
The AD694 is available in hermetically sealed,16-pin CERDIP and plastic SOIC, specified over the -40℃ to +85℃ industrial temperature range, and in a 16-pin plastic DIP, specified over the 0℃ to +70℃ temperature range.
PRODUCT HIGHLIGHTS
1.The AD694 is a complete voltage in to 4-20mA out current transmitter.
2.Pin programmable input ranges are precalibrated at 0V to 2V and 0V to 10V.
3.The input amplifier may be configured to buffer and scale the input voltage, or to serve as an output amplifier for current output DACs.
4.The output voltage compliance extends to within 2V of the positive supply and below common. When operated with a 5V supply, the output voltage compliance extends 30V below common.
5.The AD694 interfaces directly to 8-,10-, and 12-bit single supply CMOS and bipolar DACs.
6.The 4 mA zero current may be switched on and off with a TTL control pin, allowing 0-20 mA operation.
7.An open collector alarm warns of loop failure due to open wires or noncompliance of the output stage.
8.A monitored output is provided to drive an external pass transistor. The feature off-loads power dissipation to extend the temperature range of operation and minimize self-heating error.
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Express:(FEDEX, UPS, DHL, TNT)Free shipping on first 0.5kg for orders over 200$,Overweight will be charged separately
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