1B22AN Special Function by Analog Devices

VOLTAGE TO CURRENT CONV PROG DIP-12

Status: Unknown
Series: -
RoHS: Unknown
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The 1B22 is an isolated voltage-to-current converter that incorporates transformer isolation to achieve high performance and automated surface mount manufacturing for low cost and increased reliability. Designed for industrial applications, it is especially suited for harsh environments with extremely high common-mode interference. With programmable inputs and outputs, the 1B22 provides an unbeatable combination of versatility and performance in a compact plastic package. Functionally, the V/I converter consists of four basic sections: input conditioning, modulator/demodulator, isolated loop supply and current source (Figure 1). The 1B22 is pin program- mable for 0 V to +5 V or 0 V to +10 V inputs and 0 to 20 mA or 4 to 20 mA outputs using an internal resistor network. It can also be set by an external resistor to accept 0 V to +1 V to 0 V to +10 V inputs. Transformer coupling provides 1500 V rms galvanic isolation between the inputs and the current loop. Nonlinearity is an excellent ±0.05% max. Loop power is generated internally through a dc/dc converter and is also isolated from the input side (1500 V rms). Loop compliance voltage is dependent on the voltage supplied to the 1B22, and with VLOOP = 28 V, it is sufficient to drive a 1000 Ω load. The 1B22 is fully specified over –25°C to +85°C and operates over the industrial (–40°C to +85°C) temperature range. DESIGN FEATURES AND USER BENEFITS Isolated Loop Power: Internal loop supply completely isolates the loop from the input terminals (1500 V rms) and provides the capability to drive 0 Ω to 1000 Ω loads. This elimi- nates the need for an external dc/dc converter. Ease of Use: The 1B22 offers complete isolated voltage-to- current conversion with minimum external parts required to get a conditioned current signal. No external buffers or drivers are required. High CMV Isolation: The 1B22 features high input to output galvanic isolation to eliminate ground loops and offer protection against damage from transients and fault voltages. The isolation barrier will withstand continuous CMV of 1500 V rms and meets the IEEE Standard for Common-Mode Voltage Transient Pro- tection (STD 472-SWC). Small Size: The 1B22 package size (1.0" × 2.1" DIP) makes it an excellent choice in multichannel systems for maximum chan- nel density. The 0.35" height also facilitates applications with limited board clearance.

Prices starting from US$290.38


Distributor Starting From Stock
Logo for Farnell Farnell US$313.61
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Logo for element14 element14 US$290.38
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Logo for Newark Electronics Newark Electronics -
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Specifications

IC Function 4
Supply Voltage Min 14.25V
Supply Voltage Max 15.75V
IC Package Type DIP
No. of Pins 12Pins
Operating Temperature Min -25°C
Operating Temperature Max 85°C
Product Range -
Automotive Qualification Standard -
MSL -
SVHC No SVHC (07-Jul-2017)

Alternative Descriptions

VOLTAGE TO CURRENT CONVERTER, 400HZ, DIP | Farnell
Voltage To Current Converter, 400Hz, Dip | Newark Electronics


Frequently Asked Questions

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Additional datasheets, footprints and schematics for 1B22AN are listed on our Part Details page. You can also find images and similar parts to 1B22AN on this page.

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What category does 1B22AN fall under?

The 1B22AN is listed under Semiconductors - ICs > Special Function.

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Is the 1B22AN RoHS compliant?

This part has not been flagged as RoHS Compliant.

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Authorised distributors including Farnell, element14 and Newark Electronics have stock available or on a lead time for 1B22AN.

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