AD420ARZ-32 Part Information

Details for AD420ARZ-32 by Analog Devices

Semiconductors - ICs>Data & Signal Conversion>Digital-to-Analog Converters - DAC

Part Description

The AD420 is a complete digital to current loop output converter, designed to meet the needs of the industrial control market. It provides a high precision, fully integrated, low cost single-chip solution for generating current loop signals in a compact 24-lead SOIC or PDIP package. The output current range can be programmed to 4 mA to 20 mA, 0 mA to 20 mA or to an overrange function of 0 mA to 24 mA. The AD420 can alternatively provide a voltage output from a separate pin that can be configured to provide 0 V to 5 V, 0 V to 10 V, ±5 V, or ±10 V with the addition of a single external buffer amplifier. The 3.3 M Baud serial input logic design minimizes the cost of galvanic isolation and allows for simple connection to commonly used microprocessors. It can be used in 3-wire or asynchronous mode and a serial-out pin is provided to allow daisy chaining of multiple DACs on the current loop side of the isolation barrier. The AD420 uses sigma-delta (Σ-Δ) DAC technology to achieve 16-bit monotonicity at very low cost. Full-scale settling to 0.1% occurs within 3 ms. The only external components that are required (in addition to normal transient protection circuitry) are two low cost capacitors which are used in the DAC out- put filter. If the AD420 is used at extreme temperatures and supply voltages, an external output transistor can be used to minimize power dissipation on the chip via the BOOST pin. The FAULT DETECT pin signals when an open circuit occurs in the loop. The on-chip voltage reference can be used to supply a precision +5 V to external components in addition to the AD420 or, if the user desires temperature stability exceeding 25 ppm/°C, an external precision reference such as the AD586 can be used as the reference. The AD420 is available in a 24-lead SOIC and PDIP over the industrial temperature range of −40°C to +85°C.

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Part Features

  • 4 mAu201320 mA, 0 mAu201320 mA or 0 mAu201324 mA current output 16-bit resolution and monotonicity u00b10.012% max integral nonlinearity u00b10.05% max offset (trimmable) u00b10.15% max total output error (trimmable) Flexible serial digital interface (3.3 MBPS) On-Chip loop fault detection On-chip 5 V reference (25 ppm/u00b0C max) Asynchronous CLEAR function Maximum power supply range of 32 V Output loop compliance of 0 V to VCC u2212 2.75 V 24-Lead SOIC and PDIP packages

Part Specifications

Resolution (Bits) 16bit
Sampling Rate 400SPS
Input Channel Type Serial
Supply Voltage Range 12V to 32V
ADC / DAC Case Style SOIC
No. of Pins 24Pins
Data Interface SPI
Operating Temperature Min -40°C
Operating Temperature Max 85°C
Product Range AD420 Series
Automotive Qualification Standard -
RoHS Phthalates Compliant Yes
MSL MSL 3 - 168 hours
SVHC No SVHC (07-Jul-2017)
A/D / D/A Features Internal Reference Latches Microprocessor Compatible
Base Number 420
Conversion Time 3µs
IC Case Style SOIC
IC Generic Number 420
IC Temperature Range Commercial
Linearity Error 0.012%
Logic Function Number 420
No. of Bits 16bit
No. of Channels 1Channels
Operating Temperature Range -40°C to +85°C
Output Type Current
Power Dissipation Ptot Max 120mW
Settling Time 3ms
Supply Current 4.2mA
Supply Voltage Max 32V
Supply Voltage Min 12V
Termination Type Surface Mount Device
RoHS Compliant

Alternative Part Descriptions

  • 16bit Ser. DAC I-Outp SOL24 | Schukat Electronic
  • D/A Converter IC [Analog Devices] AD420ARZ-32 D/A Converter IC | Distrelec
  • CONVERTER - DAC | Richardson RFPD

Frequently Asked Questions

Where can I find additional details, specifications and documents for a AD420ARZ-32?

Additional datasheets, footprints and schematics for AD420ARZ-32 are listed in our Part Details tab. You can also find the AD420ARZ-32 image and similar parts on this details page.

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What category does AD420ARZ-32 fall under?

The AD420ARZ-32 is listed under Semiconductors - ICs > Data & Signal Conversion > Digital-to-Analog Converters - DAC.

Can I view similar or alternative parts?

You can view similar parts to AD420ARZ-32 when available in the Digital-to-Analog Converters - DAC range under the specifications section at the bottom of the details page.

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Is the AD420ARZ-32 RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by Farnell.

Which authorised distributors for AD420ARZ-32 have stock available?

Authorised distributors including Schukat Electronic, Distrelec and Richardson RFPD have stock available or on a lead time for AD420ARZ-32.

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