6B21 datasheet(3/8 Pages) AD

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6B21

Rev. 0 | Page 3 of 8

Model 6B21

Range Description

(Software Configurable)

Accuracy

(Typical)

Accuracy

(Maximum)

0 mA to 20 mA

±0.02 % FSR

±0.05 % FSR

4 mA to 20 mA

±0.02 % FSR

±0.05 %FSR

6B21 Specifications

(typical @ +25°C and Vs = +5 V dc)

Description

Model 6B21

Output, Software Selectable

Current, Operating Ranges

0 mA to 20 mA or 4 mA to 20 mA

Current, Over-range

+2 mA ±200 µA

Load Resistance

0 to 750

Ω

Communications

Protocol

RS-485

Baud Rates, Software selectable

300K, 600K, 1.2K, 2.4K. 9.6K, 19.2K

Output Current

Initial Accuracy

Output Offset

±5 µA (±15 µA maximum)

Span

±0.02% Full Scale Range

(±0.05%, max.)

Accuracy vs. Temperature

Output Offset Current

±1 µA°C

Gain

±50 ppm/°C

Resolution

±0.02% Full Scale Range

Nonlinearity

±0.02% Full Scale Range

Output Noise, 0.1 Hz to 100 Hz Bandwidth

1 µA peak-to-peak

Bandwidth, -3 dB

3 Hz

Conversion Rate

100 samples/second

Setting Time

1 ms to ±0.1% Full Scale Range

Output Slew Rate

Software Selectable (11 Binary Ranges)

0.125 mA/sec to 128 mA/sec

Common-Mode Voltage (CMV)

Output-to-Input and Power

1500 V rms continuous

Common Mode Rejection (CMR)

Output-to-Input and Power @60 Hz

108 dB

Output Protection

240 V rms, continuous

Output Transient Protection

ANSI/IEEE C37.90.1-1989

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