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Product Detailed Parameters
- Description:IC DAC 16BIT V-OUT 20SOIC
- Series:-
- Mfr:Analog Devices Inc.
- Package:Tube
- Number of Bits:16
- Number of D/A Converters:1
- Settling Time:10µs (Typ)
- Output Type:Voltage - Buffered
- Differential Output:No
- Data Interface:SPI
- Reference Type:External
- Voltage - Supply, Analog:±14.25V ~ 15.75V
- Voltage - Supply, Digital:5V
- INL/DNL (LSB):±16 (Max), ±0.9 (Max)
- Architecture:String DAC
- Operating Temperature:-40°C ~ 85°C
- Package / Case:20-SOIC (0.295", 7.50mm Width)
- Supplier Device Package:20-SOIC
- Mounting Type:Surface Mount
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Overview
The AD7849BR is a 16-bit serial input multiplying digital-to-analog converter (DAC) manufactured by Analog Devices Inc. It features guaranteed monotonicity over the specified temperature range and utilizes a versatile three-wire serial interface compatible with opto-isolated applications. The device supports daisy-chaining for multi-channel systems via its SDOUT pin. Key electrical parameters include a 7 µs typical settling time to 0.006% FSR, ±0.9 LSB maximum differential nonlinearity, and power supply requirements of VDD/VSS at ±14.25 V to ±15.75 V and VCC at 4.75 V to 5.25 V. It is available in 20-lead PDIP and SOIC packages.
Feature Summary
- 16-bit resolution with guaranteed monotonicity
- Versatile serial interface supporting standalone and daisy-chain modes
- Internal output clamping to 0 V during power-up/down sequences
- Configurable binary or two's complement coding via BIN/COMP pin
Applications
- Industrial process controls
- PC analog I/O boards
- Instrumentation
Procurement Notes
Verify package availability as the component is offered in both 20-lead PDIP and SOIC configurations. Confirm RoHS compliance status for specific manufacturing lots. Ensure ordering suffixes match the required packaging format, such as reel or tube quantities, when sourcing from distributors.
Selection Notes
Select the AD7849BR for applications requiring high-resolution voltage output with serial control. The B grade offers 16-bit resolution compared to the A grade's 14 bits. Consider the external reference requirements and supply voltage ranges (±15 V analog, 5 V digital) when designing the power architecture. The internal deglitching feature reduces output glitches during code transitions.
Part Context
The AD7849 belongs to the AD7849 series of multiplying DACs. It shares architectural similarities with other devices in the family but differs in resolution grades (A, B, C). The BR designation indicates the B-grade performance level packaged in SOIC format. It serves as a precision data conversion component within Analog Devices' industrial signal chain portfolio.
Replacement Considerations
Direct replacements within the same series include the AD7849CRZ for C-grade specifications. Other variants like the AD7849AR offer different packaging or grade options. Verify pin compatibility and electrical specifications before substituting.
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