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AD421BRZRL7 SOIC-16 DACs Digital To Analog Converters

Product Details:
Place of Origin: USA
Brand Name: Analog Devices
Model Number: AD421BRZRL7
Payment & Shipping Terms:
Minimum Order Quantity: 50PCS
Price: RFQ
Packaging Details: ESD/Vacuum/Foam/Cartons
Delivery Time: Immediately
Payment Terms: T/T, Western Union, escrow, Paypal, Visa, MoneyGram
Supply Ability: RFQ
Specifications Product Description Request A Quote
RoHS: PB Free
Mounting Style: SMD/SMT
Package: SOIC-16
Series: AD421
Factory Pack Quantity: 400
Product Type: DACs - Digital To Analog Converters
High Light:

SOIC-16 Digital To Analog Converters


DACs Digital To Analog Converters



Product Description

PCB Pluggable Connector AD421BRZRL7 SOIC-16 DACs - Digital to Analog Converters


Product Description:

The AD421 is a complete, loop-powered, digital to 4 mA to 20 mA converter, designed to meet the needs of smart transmitter manufacturers in the Industrial Control industry. It provides 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 provides 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 operating at 10 Mbps and allows for simple connection to commonly-used microprocessors and microcontrollers via a standard three-wire serial interface.



1. The AD421 is a single chip, high performance, low cost solution for generating 4 mA to 20 mA signals for smart industrial control transmitters.

2. The AD421’s regulated supply voltage can be used to power any additional circuits in the transmitter. The regulated output value is pin selectable as either +3 V, +3.3 V or +5 V.

3. The AD421’s on-chip references can provide a precision reference voltage to other devices in the system. This reference voltage can be either +1.25 V or +2.5 V.

4. The AD421 is fully compatible with standard HART circuitry or other similar FSK protocols.

5. With the addition of a single discrete transistor, the AD421 can be operated from VCC + 2 V min to a maximum of the breakdown voltage of the pass transistor.

6. The AD421 converts the digital data to current with 16-bit resolution and monotonicity. Full-scale settling time to ±0.1% typically occurs within 8 ms.

7. The AD421 features a programmable alarm current capability that allows the transmitter to send out of range currents to indicate a transducer fault.

Parameter Table:

Product Attribute Attribute Value
Manufacturer: Analog Devices Inc.
Product Category: Digital to Analog Converters - DAC
RoHS: Yes
Series: AD421
Resolution: 16 bit
Settling Time: 8 ms
Output Type: Current
Interface Type: 3-Wire
Mounting Style: SMD/SMT
Package / Case: SOIC-16
Reference Type: External, Internal
Shutdown: No Shutdown
Unit Weight: 0.023492 oz



  • Whats your MOQ?

No MOQ needed, and if you buy more, will enjoy better prices.

  • Can i get a free sample?

You can ask our staff for apply free samples.

  • What payment methods do you support?

We provide: Visa/MasterCard/Wire Transfer/WU/MG/PayPal etc.

  • What about the shipment methods?

We provide:DHL/UPS/TNT/Fedex/EMS/Aramex/ePacket etc.

  • How will you Guaranteed quality?

Quality Warranty Period:12 Months.

  • Are the products tested before shipment?

All products were tested before shipment, and the quality problems were negligible.

  • Do you provide BOM services?

Yes, We provide one-stop purchase service, Please send us your Bom List

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