Specification	AD5421BREZ-REEL

Architecture	Cyclic Serial
Data Interface	DSP, SPI
Differential Output	No
INL/DNL (LSB) (Max)	1 LSB
Mounting Type	Surface Mount
Number of Bits	16 bits
Number of D/A Converters	1 count
Operating Temperature (Max)	105 °C
Operating Temperature (Min)	-40 °C
Output Type	Current - Buffered
Package Features	Exposed Pad
Package Length	0.173 in
Package Name	28-TSSOP, 28-TSSOP-EP
Package Width	4.4 mm
Reference Type	External, Internal
Settling Time (Typical)	50 µs
Voltage - Supply, Analog (Max)	5.5 V
Voltage - Supply, Analog (Min)	1.71 V
Voltage - Supply, Digital (Max)	3.48 V
Voltage - Supply, Digital (Min)	3.17 V

AD5421 Series

Part	Voltage - Supply, Analog (Max)	Voltage - Supply, Analog (Min)	Voltage - Supply, Digital (Min)	Voltage - Supply, Digital (Max)	Number of Bits	Architecture	Data Interface	Output Type	Package Width	Package Name	Package Features	Package Length	Operating Temperature (Min)	Operating Temperature (Max)	Mounting Type	Reference Type	INL/DNL (LSB) (Max)	Settling Time (Typical)	Differential Output	Number of D/A Converters	Package / Case	Settling Time	Supplied Contents	DAC Type	Number of DAC's	Contents	Utilized IC / Part
Analog Devices Inc./Maxim Integrated AD5421BREZ-REEL	5.5 V	1.71 V	3.17 V	3.48 V	16 bits	Cyclic Serial	DSP SPI	Current - Buffered	4.4 mm	28-TSSOP 28-TSSOP-EP	Exposed Pad	0.173 in	-40 °C	105 °C	Surface Mount	External Internal	1 LSB	50 µs	No	1 count
Analog Devices Inc./Maxim Integrated AD5421ACPZ-REEL7	5.5 V	1.71 V	3.17 V	3.48 V	16 bits	Cyclic Serial	DSP SPI	Current - Buffered	5 mm	32-LFCSP		5 mm	-40 °C	105 °C	Surface Mount	External Internal	1 LSB	50 µs	No	1 count	32-WFQFN Exposed Pad CSP
Analog Devices Inc./Maxim Integrated AD5421BREZ	5.5 V	1.71 V	3.17 V	3.48 V	16 bits	Cyclic Serial	DSP SPI	Current - Buffered	4.4 mm	28-TSSOP 28-TSSOP-EP	Exposed Pad	0.173 in	-40 °C	105 °C	Surface Mount	External Internal	1 LSB	50 µs	No	1 count
Analog Devices Inc./Maxim Integrated AD5421CREZ-RL7	5.5 V	1.71 V	3.17 V	3.48 V	16 bits	Cyclic Serial	DSP SPI	Current - Buffered	4.4 mm	28-TSSOP 28-TSSOP-EP	Exposed Pad	0.173 in	-40 °C	105 °C	Surface Mount	External Internal	1 LSB	50 µs	No	1 count
Analog Devices Inc./Maxim Integrated EVAL-AD5421SDZ					16 bits		SPI															50 µs	Board(s)	Voltage	1	Board	AD5421
Analog Devices Inc./Maxim Integrated AD5421CREZ-RL	5.5 V	1.71 V	3.17 V	3.48 V	16 bits	Cyclic Serial	DSP SPI	Current - Buffered	4.4 mm	28-TSSOP 28-TSSOP-EP	Exposed Pad	0.173 in	-40 °C	105 °C	Surface Mount	External Internal	1 LSB	50 µs	No	1 count
Analog Devices Inc./Maxim Integrated AD5421BCPZ-REEL7	5.5 V	1.71 V	3.17 V	3.48 V	16 bits	Cyclic Serial	DSP SPI	Current - Buffered	5 mm	32-LFCSP		5 mm	-40 °C	105 °C	Surface Mount	External Internal	1 LSB	50 µs	No	1 count	32-WFQFN Exposed Pad CSP
Analog Devices Inc./Maxim Integrated AD5421BREZ-REEL7	5.5 V	1.71 V	3.17 V	3.48 V	16 bits	Cyclic Serial	DSP SPI	Current - Buffered	4.4 mm	28-TSSOP 28-TSSOP-EP	Exposed Pad	0.173 in	-40 °C	105 °C	Surface Mount	External Internal	1 LSB	50 µs	No	1 count

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$	Updated

Digikey	Tape & Reel (TR)	2500	$ 10.39	<1d

CAD

3D models and CAD resources for this part

Description

General part information

AD5421 Series

The AD5421 is a complete, loop-powered, 4 mA to 20 mA digital-to-analog converter (DAC) designed to meet the needs of smart transmitter manufacturers in the industrial control industry. The DAC provides a high precision, fully integrated, low cost solution in compact TSSOP and LFCSP packages.The AD5421 includes a regulated voltage output that is used to power itself and other devices in the transmitter. This regulator provides a regulated 1.8 V to 12 V output voltage. The AD5421 also contains 1.22 V and 2.5 V references, thus eliminating the need for a discrete regulator and voltage reference.The AD5421 can be used with standard Highway Addressable Remote Transducer (HART®) FSK protocol communication circuitry without any degradation in specified performance. The high speed serial interface is capable of operating at 30 MHz and allows for simple connection to commonly used microprocessors and microcontrollers via a SPI-compatible, 3-wire interface.The AD5421 is guaranteed monotonic to 16 bits. It provides 0.0015% integral nonlinearity, 0.0012% offset error, and 0.0006% gain error under typical conditions.The AD5421 is available in a 28-lead TSSOP and a 32-lead LFCSP specified over the extended industrial temperature range of −40°C to +105°C.ApplicationsIndustrial Process Control4 mA to 20 mA loop-powered transmittersSmart transmittersHART network connectivity

Documents

Technical documentation and resources

AD5421BREZ-REEL | Datasheet

Datasheet

Tape and Reel Packaging

Package Drawing - 28-Lead TSSOP w/ EP

Package Drawing

UG-250: Evaluation Board for 16-Bit, Serial Input, Loop-Powered 4 mA to 20 mA DAC

User Guide