Product Details
The AD421 is a complete, loop-powered, digital to 4-20 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-pin package. The AD421 is ideal for extending the resolution of smart 4-20 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.
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-pin, 0.3 inch-wide, plastic DIP and a 16-lead, 0.3 inch-wide, SOIC package. The part is specified over the industrial temperature range of -40°C to +85°C.
16-Bit D/A Converter AD421BRZ - Data Converters - General Purpose DACs
16-Bit D/A Converter AD421BRZ - Data Converters - General Purpose DACs
16-Bit D/A Converter AD421BRZ - Data Converters - General Purpose DACs
Delivery on production packaging - Tube. This product is non-returnable.
The AD421 is a complete, loop-powered, digital to 4-20 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-pin package. The AD421 is ideal for extending the resolution of smart 4-20 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. 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-pin, 0.3 inch-wide, plastic DIP and a 16-lead, 0.3 inch-wide, SOIC package. The part is specified over the industrial temperature range of -40°C to +85°C.
IC DAC 16BIT 16SOIC
Manufacturer: Analog Devices Inc.
Win Source Part Number: 086377-AD421BRZ
Packaging: Reel - TR
Type: DAC
Mounting: SMD (SMT)
Data Interface: MICROWIRE, Serial
Resolution (Bits): 16 b
Voltage Supply Source: Single Supply
Categories: Integrated Circuits
Status: Active
Temperature Range - Operating: -40°C to 85°C
Case / Package: 16-SOIC
Supply Voltage - Operating: 3V, 3.3V, 5V
Is this a common-used part?: Yes
Popularity: High
Fake Threat In the Open Market: 58 pct.
Supply and Demand Status: Balance
| Analog Devices, Inc. | RS Components, Ltd. | Richardson RFPD | Shenzhen Shengyu Electronics Technology Limited | Win Source Electronics | |
|---|---|---|---|---|---|
| Product Category | Digital-to-Analog Converter (DAC) Chips | Digital-to-Analog Converter (DAC) Chips | Digital-to-Analog Converter (DAC) Chips | Analog-to-Digital Converter (ADC) Chips | Analog-to-Digital Converter (ADC) Chips |
| Product Number | AD421BRZ | 412494 | AD421BRZ | AD421BRZ | 086377-AD421BRZ |
| Product Name | Loop-Powered 4-20 mA DAC | Converter - DAC | Integrated Circuits (ICs) - Data Acquisition - ADCs-DACs - Special Purpose | Data Acquisition - Data Acquisition - ADCs/DACs - Special Purpose - AD421BRZ | |
| Package Type | SOIC; PDIP | SOIC; SOIC W | SOIC | SOIC; 16-SOIC | |
| Pins | 16 | ||||
| Operating Temperature | -40 to 85 C (-40 to 185 F) | -40 to 85 C (-40 to 185 F) | -40 to 85 C (-40 to 185 F) | ||
| Architecture | Current Steering | Sigma-Delta | |||
| Output Type | Current |
