AD421BRZRL Digital Integrated Circuit 16bit Loop Powered 4 Ma To 20
Ma Dac Converter,Loop-Powered 4 mA to 20 mA DAC
Applications
• Industrial automation
• Motor control
• Power supplies
• Solar inverters
• Medical equipment
Specifications
Product Attribute
Attribute Value
Analog Devices Inc.
Product Category:
Digital to Analog Converters - DAC
AD421
16 bit
1 Channel
8 ms
Current
3-Wire
2.95 V to 5.05 V
2.95 V to 5.05 V
- 40 C
+ 85 C
SOIC-16
Reel
INL - Integral Nonlinearity:
+/- 0.01 % FSR
Number of Converters:
1 Converter
Pd - Power Dissipation:
1.95 mW
Shutdown:
No Shutdown
Subcategory:
Data Converter ICs
Supply Voltage - Max:
5.05 V
Supply Voltage - Min:
2.95 V
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.
Features
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
Trading Guides
Shipping
Delivery period
For in-stock parts, orders are estimated to ship out in 3 days. Once shipped, estimated delivery time depends on the below carriers
you chose: DHL Express, 3-7 business days. DHL eCommerce,12-22 business days. FedEx International Priority, 3-7 business days EMS, 10-15 business days. Registered Air Mail, 15-30 business days.
Shipping rates
After confirming the order, we will evaluate the shipping cost
based on the weight of the goods
Shipping option
We provide DHL, FedEx, EMS, SF Express, and Registered Air Mail
international shipping.
Shipping tracking
We will notify you by email with tracking number once order is
shipped.
Returning
warranty
Returning
Returns are normally accepted when completed within 30 days from
date of shipment.Parts should be unused and in original
packaging.Customer has to take charge for the shipping.
Warranty
All Retechip purchases come with a 30-day money-back return policy,
This warranty shall not apply to any item where defects have been
caused by improper customer assembly, failure by customer to follow
instructions, product modification, negligent or improper operation
Ordering
Payment
T/T,PayPal, Credit Card includes Visa, Master, American Express.
Shenzhen Retechip® Electronic Technology Co., Ltd. was established in 2013,
specializing in electronic components distribution business.The
products are widely used in communication equipment, power supply,
medical electronics, automotive electronics, digital electronics,
industrial electronics, display modules, intelligent electronics,
new energy, the Internet of things, 5G productsand other
fields，With high-quality products, reasonable prices, rapid
distributionand timely service, we can provide customers with the
most cost-effective productsand save customers a lot of time.
