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AD7849AN
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Product Detailed Parameters
- Description：IC DAC 16BIT SRL INP 20-DIP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Number of Bits：-
- Number of D/A Converters：-
- Settling Time：-
- Output Type：-
- Differential Output：-
- Data Interface：-
- Reference Type：-
- Voltage - Supply, Analog：-
- Voltage - Supply, Digital：-
- INL/DNL (LSB)：-
- Architecture：-
- Operating Temperature：-
- Package / Case：20-DIP (0.300", 7.62mm)
- Supplier Device Package：20-PDIP
- Mounting Type：Through Hole
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Overview
The AD7849AN is a 14-bit/16-bit serial input multiplying digital-to-analog converter (DAC) from Analog Devices. It features guaranteed monotonicity to 14 bits for the A grade and 16 bits for other grades. The device operates with analog supplies of ±15 V nominal and a digital supply of 5 V. Key specifications include a typical output settling time of 7 μs to 0.006% FSR, a slew rate of 4 V/μs, and a power dissipation of 100 mW typ. It utilizes a versatile serial interface compatible with opto-isolators and includes internal reset logic to clamp the output to 0 V during power-up or power-down sequences.
Feature Summary
- 14-bit/16-bit resolution with guaranteed monotonicity over temperature ranges
- Versatile serial interface supporting standalone and daisy-chain modes via SDIN, SCLK, SYNC, and SDOUT
- Internal voltage monitor clamps VOUT to 0 V during power transitions; externally controllable via RSTIN
- Multiplying architecture with wide reference input range and configurable binary/twos complement coding
Applications
- Industrial process controls
- PC analog I/O boards
- Instrumentation systems
Procurement Notes
Verify the specific grade (A, B, or C) required for resolution and accuracy specifications, as the A grade offers 14-bit monotonicity while others provide 16-bit. Confirm package availability, as the datasheet indicates the 20-lead PDIP variant. Check for RoHS compliance status if environmental regulations apply to the deployment environment.
Selection Notes
Select the AD7849AN when a serial interface is preferred over parallel options to reduce pin count. Ensure the system can accommodate the required ±15 V analog supplies and 5 V digital supply. Consider the 7 μs settling time for bandwidth requirements. Verify that the external reference voltage range fits within the VSS + 6 V to VDD - 6 V limits specified in the datasheet.
Part Context
The AD7849 belongs to the AD7849 series of multiplying DACs. It is available in 20-lead PDIP and SOIC packages. The 'AN' suffix denotes the 20-lead Plastic Dual In-Line Package (PDIP). Other variants include AR (SOIC) and different temperature/accuracy grades such as BCN or BRZ.
Replacement Considerations
Direct replacements within the same family include AD7849AR (SOIC package) and AD7849BCN (DIP package). Cross-family replacements require verification of pin compatibility, supply voltages, and interface protocols.
