AD421BRZ Part Information

Details for AD421BRZ by Analog Devices

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

Part Description

The AD421 is a complete, loop-powered, digital to 4 mA to 20 mA converter, designed to meet the needs of smart trans- mitter manufacturers in the Industrial Control industry. It pro- vides a high precision, fully integrated, low cost solution in a compact 16-lead package. The AD421 is ideal for extending the resolution of smart 4 mA to 20 mA transmitters at very low cost. The AD421 includes a selectable regulator that is used to power itself and other devices in the transmitter. This regulator pro- vides either a +5 V, +3.3 V or +3 V regulated output voltage. The part also contains +1.25 V and +2.5 V precision references. The AD421 thus eliminates the need for a discrete regulator and voltage reference. The only external components required are a number of passive components and a pass transistor to span large loop voltages. The AD421 can be used with standard HART FSK protocol communication circuitry without any degradation in specified performance. The high speed serial interface is capable of oper- ating at 10 Mbps and allows for simple connection to com- monly-used microprocessors and microcontrollers via a standard three-wire serial interface. The sigma-delta architecture of the DAC guarantees 16-bit monotonicity while the integral nonlinearity for the AD421 is ±0.01%. The part provides a zero scale 4 mA output current with ±0.1% offset error and a 20 mA full-scale output current with ±0.2% gain error. The AD421 is available in a 16-lead, 0.3 inch-wide, plastic DIP and in a 16-lead, 0.3 inch-wide, SOIC package. The part is speci- fied over the industrial temperature range of –40°C to +85°C.

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Part Features

  • 4 mA to 20 mA Current Output HARTu00ae Compatible 16-Bit Resolution and Monotonicity u2d1e0.01% Integral Nonlinearity 5 V or 3 V Regulator Output 2.5 V and 1.25 V Precision Reference 750 u242eA Quiescent Current max Programmable Alarm Current Capability Flexible High Speed Serial Interface 16-Lead SOIC and PDIP Packages Loop-Powered 4 mA to 20 mA DAC AD421

Part Specifications

Resolution (Bits) 16bit
Sampling Rate 125SPS
Input Channel Type Serial
Supply Voltage Range 2.95V to 5.05V
ADC / DAC Case Style SOIC
No. of Pins 16Pins
Data Interface Serial
Operating Temperature Min -40°C
Operating Temperature Max 85°C
Product Range AD421 Series
Automotive Qualification Standard -
MSL MSL 1 - Unlimited
SVHC No SVHC (07-Jul-2017)
Base Number 421
IC Case Style SOIC
Operating Temperature Range -40°C to +85°C
Output Type Current
Settling Time 8ms
Supply Current 575µA
Supply Voltage Max 5.05V
Supply Voltage Min 2.95V
Termination Type Surface Mount Device
RoHS Compliant

Alternative Part Descriptions

  • Digital to Analogue Converter, 16 bit, 125 SPS, Serial, 2.95V to 5.05V, SOIC, 16 RoHS Compliant: Yes | Newark Electronics
  • D/A converter; 16bit; Channels: 1; 2.95÷5.05V; SO16 | Transfer Multisort Elektronik
  • D/A Converter IC [Analog Devices] AD421BRZ D/A Converter IC | Distrelec
  • CONVERTER - DAC | Richardson RFPD

Frequently Asked Questions

Where can I find additional details, specifications and documents for a AD421BRZ?

Additional datasheets, footprints and schematics for AD421BRZ are listed in our Part Details tab. You can also find the AD421BRZ image and similar parts on this details page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for AD421BRZ in the Pricing & Inventory tab next to part details. You can view AD421BRZ price breaks, MOQs, lead times, inventory and SKUs from distributors.

What category does AD421BRZ fall under?

The AD421BRZ 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 AD421BRZ 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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Submit any questions directly to the customer support team of the distributor listing the product. For the AD421BRZ you can contact the distributor directly for product support, shipping queries etc.

Is the AD421BRZ RoHS compliant?

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

Which authorised distributors for AD421BRZ have stock available?

Authorised distributors including Newark Electronics, Transfer Multisort Elektronik, Distrelec and Richardson RFPD have stock available or on a lead time for AD421BRZ.

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