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LTC2637IDE-LZ8#PBF
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Product Detailed Parameters
- Description：IC DAC 8BIT V-OUT 14DFN
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Number of Bits：8
- Number of D/A Converters：8
- Settling Time：3.5µs (Typ)
- Output Type：Voltage - Buffered
- Differential Output：No
- Data Interface：I2C
- Reference Type：External, Internal
- Voltage - Supply, Analog：2.7V ~ 5.5V
- Voltage - Supply, Digital：2.7V ~ 5.5V
- INL/DNL (LSB)：±0.05, ±0.5 (Max)
- Architecture：-
- Operating Temperature：-40°C ~ 85°C
- Package / Case：14-WFDFN Exposed Pad
- Supplier Device Package：14-DFN (4x3)
- Mounting Type：Surface Mount
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Overview
The LTC2637IDE-LZ8#PBF is an octal 8-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features an integrated precision reference with a full-scale output of 2.5V and a temperature coefficient of 10ppm/°C. The device operates on a single supply ranging from 2.7V to 5.5V and communicates via a 2-wire I2C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. It includes rail-to-rail output buffers, double-buffered data latches, and a power-on reset circuit configured to reset outputs to zero-scale upon initialization.
Feature Summary
- Octal architecture with 8 independent 8-bit DAC channels
- Integrated 2.5V precision reference with 10ppm/°C drift
- Rail-to-rail output buffers guaranteed monotonic over –40°C to 85°C
- Ultralow crosstalk between DACs (<3nV•s)
- Power-on reset to zero-scale in internal reference mode
Applications
- Mobile communications
- Process control and industrial automation
- Automatic test equipment
- Portable equipment
- Automotive systems
- Optical networking
Procurement Notes
Verify the specific ordering suffix LZ8 corresponds to the Industrial temperature grade (-40°C to 85°C), 8-bit resolution, Zero-scale power-on reset, and DFN package configuration as defined in the manufacturer's selection guide. Confirm that the #PBF designation indicates lead-free compliance before procurement.
Selection Notes
Select this component when eight low-channel-count DACs are required within a compact footprint. The 2.7V to 5.5V supply range accommodates various system voltages. Ensure the application requires zero-scale initialization on power-up; otherwise, consider MI or MX suffixes for mid-scale reset options.
Part Context
This part belongs to the LTC2637 family, which offers 12-, 10-, and 8-bit resolutions in both 14-lead DFN and 16-lead MSOP packages. The 'I' suffix denotes the Industrial temperature grade, while 'L' specifies the 2.5V full-scale internal reference variant. The 'Z' suffix specifically configures the power-on reset behavior to zero-scale.
Replacement Considerations
Publicly confirmed parameter-equivalent substitutes include LTC2637IDE-HZ8#PBF (4.096V full-scale) and LTC2637CMS-LZ8#PBF (Commercial temperature grade). Verify supply voltage compatibility when substituting H-grade parts.
