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LTC2641IDD-12#TRPBF
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Product Detailed Parameters
- Description：IC DAC 12BIT V-OUT 8DFN
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR)
- Number of Bits：12
- Number of D/A Converters：1
- Settling Time：1µs (Typ)
- Output Type：Voltage - Unbuffered
- Differential Output：No
- Data Interface：SPI
- Reference Type：External
- Voltage - Supply, Analog：2.7V ~ 5.5V
- Voltage - Supply, Digital：2.7V ~ 5.5V
- INL/DNL (LSB)：±0.5 (Max), ±0.5 (Max)
- Architecture：R-2R
- Operating Temperature：-40°C ~ 85°C
- Package / Case：8-WFDFN Exposed Pad
- Supplier Device Package：8-DFN (3x3)
- Mounting Type：Surface Mount
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Overview
The LTC2641IDD-12#TRPBF is a 12-bit unbuffered voltage output digital-to-analog converter (DAC) from Analog Devices. It operates on a single 2.7V to 5.5V supply with a typical current consumption of 120µA. The device features a 3-wire SPI/MICROWIRE compatible serial interface supporting clock rates up to 50MHz. Key electrical specifications include ±0.5 LSB differential nonlinearity (DNL), ±0.5 LSB integral nonlinearity (INL), and a settling time of 1µs to 0.5 LSB. It is housed in an 8-lead 3mm × 3mm DFN package and is guaranteed monotonic over the industrial temperature range of -40°C to +85°C.
Feature Summary
- 12-bit resolution with ±0.5 LSB INL/DNL accuracy
- Low power consumption of 120µA at 2.7V to 5.5V
- Fast 1µs settling time to 16-bit accuracy
- Unbuffered voltage output directly drives loads >60kΩ
Applications
- Process control and industrial automation systems
- Automatic test equipment
- Data acquisition systems
Procurement Notes
Verify that the #TRPBF suffix indicates tape and reel packaging, distinct from the tube-packaged #PBF variant. Confirm the 'I' grade corresponds to the -40°C to +85°C operating range. Ensure the 12-bit resolution matches system requirements, as other resolutions like 14-bit or 16-bit are available within the same family.
Selection Notes
Select this component for applications requiring low power and high precision in a compact footprint. The unbuffered output requires careful consideration of load impedance; loads below 60kΩ will increase gain error. For bipolar operation, the LTC2642 variant with internal scaling resistors is required instead of the LTC2641.
Part Context
This part belongs to the LTC2641/LTC2642 family of 16-, 14-, and 12-bit DACs. The LTC2641 provides unipolar output, while the LTC2642 supports bipolar configurations via external amplifiers. The IDD suffix denotes the industrial temperature grade, and the 12 specifies the 12-bit resolution version of the device.
Replacement Considerations
LTC2641CDD-12#TRPBF offers identical electrical performance but is rated for the commercial temperature range (0°C to 70°C). LTC2641IMS8-12#TRPBF provides the same specifications in an 8-lead MSOP package.
