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LTC2634HUD-LMX8#PBF
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Product Detailed Parameters
- Description：IC DAC 8BIT V-OUT 16QFN
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Number of Bits：8
- Number of D/A Converters：4
- Settling Time：3.3µs (Typ)
- Output Type：Voltage - Buffered
- Differential Output：No
- Data Interface：SPI
- 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 ~ 125°C
- Package / Case：16-WFQFN Exposed Pad
- Supplier Device Package：16-QFN (3x3)
- Mounting Type：Surface Mount
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Overview
The LTC2634HUD-LMX8#PBF is a quad 8-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features an integrated precision reference with a full-scale output of 4.096V and operates on a single 4.5V to 5.5V supply. The device includes rail-to-rail output buffers, double-buffered data latches, and an SPI/MICROWIRE compatible 3-wire serial interface supporting clock rates up to 50MHz. It guarantees monotonicity over the -40°C to 125°C automotive temperature range and incorporates a power-on reset circuit that sets outputs to mid-scale in external reference mode.
Feature Summary
- Quad 8-bit DACs with integrated 4.096V precision reference
- Rail-to-rail output buffers guaranteed monotonic over -40°C to 125°C
- SPI/MICROWIRE compatible 3-wire serial interface with 50MHz clock rate
- Power-on reset to mid-scale in external reference mode
Applications
- Automotive systems
- Process control and industrial automation
- Portable equipment
Procurement Notes
Verify the H suffix indicates the 4.5V to 5.5V supply range and 4.096V full-scale output. Confirm the LMX suffix specifies mid-scale reset in external reference mode. Ensure the UD package matches the 16-lead QFN requirement. Check for the PBF lead-free designation and #W automotive qualification if required by the application.
Selection Notes
Select this part when a quad 8-bit DAC with a 4.096V internal reference is needed for automotive or high-temperature environments. The LMX variant is appropriate if mid-scale initialization in external reference mode is required. Verify that the system supply voltage remains within the 4.5V to 5.5V range to ensure specified performance.
Part Context
This component belongs to the LTC2634 family of quad DACs available in 12-, 10-, and 8-bit resolutions. The HUD suffix denotes the Automotive temperature grade (-40°C to 125°C) and the 16-lead QFN package. Other variants include the C-grade commercial version and the MSE MSOP package option.
Replacement Considerations
LTC2634CUD-LMX8#PBF: Commercial grade (0°C to 70°C). LTC2634IUD-LMX8#PBF: Industrial grade (-40°C to 85°C). LTC2634HUX-LMX8#PBF: Alternative automotive grade with different package.
