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Product Detailed Parameters
- Description:IC DAC 12BIT V-OUT 40QFN
- Series:SoftSpan™
- Mfr:Analog Devices Inc.
- Package:Tube
- Number of Bits:12
- Number of D/A Converters:16
- Settling Time:15.5µs (Typ)
- Output Type:Voltage - Buffered
- Differential Output:No
- Data Interface:SPI
- Reference Type:External, Internal
- Voltage - Supply, Analog:±4.5V ~ 15.75V
- Voltage - Supply, Digital:1.71V ~ 5.5V
- INL/DNL (LSB):±0.2, ±0.05
- Architecture:-
- Operating Temperature:-40°C ~ 125°C
- Package / Case:40-WFQFN Exposed Pad
- Supplier Device Package:40-QFN (6x6)
- Mounting Type:Surface Mount
- Grade:-
- Qualification:-
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Overview
The LTC2668HUJ-12#PBF is a 16-channel, 12-bit digital-to-analog converter (DAC) from Analog Devices. It features SoftSpan technology allowing independently programmable output ranges of 0V to 5V, 0V to 10V, ±2.5V, ±5V, and ±10V. The device includes an integrated precision reference with a maximum temperature coefficient of 10ppm/°C. Key electrical specifications include a settling time of 15.5µs for the ±10V range, integral nonlinearity (INL) of ±0.2 LSB, and differential nonlinearity (DNL) of ±0.05 LSB. It operates on analog supplies of ±4.5V to ±15.75V and a digital supply of 1.71V to 5.5V.
Feature Summary
- 16 independent channels with 12-bit resolution and SoftSpan output range programming
- Integrated 2.5V reference with 10ppm/°C max temperature coefficient
- A/B toggle capability via software command or dedicated TGP pin
- Built-in 16:1 analog multiplexer for monitoring outputs
Applications
- Precision instrumentation systems
- Data acquisition equipment
- Automatic test equipment
- Process control and industrial automation
Procurement Notes
Verify the package type matches the required footprint. The #PBF suffix indicates a lead-free finish in a tube. Confirm the H-grade designation meets the specific operating temperature requirements of the target application environment.
Selection Notes
Select this model for applications requiring high channel density and flexible voltage ranges without external level shifting. Ensure the system power supplies accommodate the ±15.75V maximum rating if utilizing the full ±10V output span. Verify SPI interface compatibility with the host controller logic levels.
Part Context
This component belongs to the LTC2668 family, which also offers 16-bit resolution variants. The HUJ-12 designation specifically identifies the automotive temperature grade (-40°C to 125°C), 12-bit resolution, and 40-lead QFN package configuration within the manufacturer's product line.
Replacement Considerations
Compatible substitutes within the same family include the LTC2668IUJ-12#PBF for industrial temperature ranges and the LTC2668CUJ-12#PBF for commercial ranges. These parts share identical pinouts and electrical characteristics but differ in specified operating temperature limits.
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