1B21 series datasheets. Manufacturer: Analog Devices.

1B21 Isolated, Loop-Powered Voltage-to-Current Converter Datasheet*) 1B21 InputV:0to+10V; outputV:+6.4V; 4 to 20mA ,0 to 20mA; isolated, loop-powered voltage-to-current converter. For multichannel process control, D/A converter -current looop interface, analog transmitters and controllers in 38-pin DIP package. Operational temperature range from -25°C to 85°C. Datasheet*) 1B21 InputV: 0-10V; isolated, loop-powered voltage-to-current converter. For multichannel processs control, A/D converter - current loop interface, analog transmitters and controllers in 38-pin -- package. Operational temperature range from -40°C to 85°C. Datasheet*) 1B21AN Isolated, Loop-Powered Voltage-to-Current Converter Datasheet*)

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