1B22AN Analog Devices Inc, 1B22AN Datasheet

1B22AN

Manufacturer Part Number

1B22AN

Description

IC VOLTAGE CONVERTER PROG DIP

Manufacturer

Analog Devices Inc

Type

Voltage and Current Controllerr

Datasheet

1.1B22AN.pdf (4 pages)

Specifications of 1B22AN

Rohs Status

RoHS non-compliant

Full Scale

±50ppm/°C

Linearity

±0.02%

Mounting Type

Through Hole

Package / Case

38-DIP (0.800", 20.32mm), 12 Leads

Ic Function

Voltage To Current Converter IC

Supply Voltage Range

14.25V To 15.75V, 14V To 30V

Operating Temperature Range

-40Â°C To +85Â°C

Digital Ic Case Style

DIP

No. Of Pins

Application

Multichannel process control, D⁄A converter—current loop interface, analog transmitters and controllers, remote data acquisition systems

Bandwidth

400 Hz

Converter Type

Voltage to Current

Current, Output

30 mA

Current, Output, Isolated

4 to 20 or 0 to 20 mA

Current, Quiescent Supply

±7.5 mA

Impedance, Input

50 Kiloohms

Package Type

38 Lead Plas Cust Hybrid

Standards

Meets IEEE STD 472: CMV Transient Protection (SWC)

Temperature, Operating, Maximum

85 °C

Temperature, Operating, Minimum

-40 °C

Voltage, Isolation

1500 V (RMS) (Max.)

Voltage, Operating

±15 V ±5%

Voltage, Protection

240 V (RMS)

Pin Programmable Inputs

0 V to +5 V or 0 V to +10 V

Pin Programmable Outputs

4 to 20 mA or 0 to 20 mA

High Cmv Isolation

1500 V RMS

Normal-mode Output Protection

240 V RMS

Lead Free Status / RoHS Status

Contains lead / RoHS non-compliant

Available stocks

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Part Number

Manufacturer

Quantity

Price

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Bonase Electronics (HK) Co., Limited

Part Number:

1B22AN

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REV. B

Information furnished by Analog Devices is believed to be accurate and

reliable. However, no responsibility is assumed by Analog Devices for its

use, nor for any infringements of patents or other rights of third parties

which may result from its use. No license is granted by implication or

otherwise under any patent or patent rights of Analog Devices.

GENERAL DESCRIPTION

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 V

load.

The 1B22 is fully specified over –25°C to +85°C and operates

over the industrial (–40°C to +85°C) temperature range.

FEATURES

Internal Isolated Loop Supply Drives 1000

Pin Programmable Inputs: 0 V to +5 V or 0 V to +10 V

Pin Programmable Outputs: 4 to 20 mA or 0 to 20 mA

High CMV Isolation: 1500 V RMS

Normal-Mode Output Protection: 240 V RMS

High Accuracy

Small Package: 1.0"

Meets IEEE STD 472: CMV Transient Protection (SWC)

APPLICATIONS

Multichannel Process Control

D/A Converter—Current Loop Interface

Analog Transmitters and Controllers

Remote Data Acquisition Systems

Low Offset Tempco:

Low Gain Tempco:

Low Nonlinearity:

High CMR: 90 dB min

LOOP

= 28 V, it is sufficient to drive a 1000 Ω

0.02%

2.10"

50 ppm/ C

300 nA/ C

0.35"

Load

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.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781/329-4700

Fax: 781/326-8703

S. NODE

OFFSET

A. COM

SYNC

+15V

–15V

4mA

Voltage-to-Current Converter

IN2

IN1

RESISTOR

NETWORK

FUNCTIONAL BLOCK DIAGRAM

Programmable, Isolated

World Wide Web Site: http://www.analog.com

P. COM

OSCILLATOR

MODULATOR

REF

LOOP

ISOLATION

POWER

SIGNAL

DEMODULATOR

LOOP SUPPLY

RECTIFIER/

1B22

PROT

OUT

Related parts for 1B22AN

1B22AN Summary of contents

Page 1

FEATURES Internal Isolated Loop Supply Drives 1000 Pin Programmable Inputs +10 V Pin Programmable Outputs High CMV Isolation: 1500 V RMS ...

... Rated Performance Operating Storage Relative Humidity, Noncondensing CASE SIZE Specifications subject to change without notice. (typical @ +25 C and +24 V, unless otherwise noted) S LOOP 1B22AN + kΩ 25 kΩ mA min 20 V min 30 mA 300 nA p-p ± 0.02% (± 0.05% max) 1500 V rms max 90 dB min ...

Page 3

INSIDE THE 1B22 The 1B22 produces an isolated out- put current which is proportional to the input voltage and independent of the output load resistance (Figure 1). The input stage is ...

Page 4

Synchronizing Multiple 1B22s: In applications where mul- tiple 1B22s are used in close proximity, radiated individual oscillator frequencies may cause “beat frequency” related out- put errors. These errors can be eliminated by driving the SYNC pins of all the ...

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1B22AN Analog Devices Inc, 1B22AN Datasheet

1B22AN

Specifications of 1B22AN

Available stocks

Related parts for 1B22AN

1B22AN Summary of contents

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