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LTC2634CUD-HMX12#PBF
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Product Detailed Parameters
- Description：IC DAC 12BIT V-OUT 16QFN
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Number of Bits：12
- Number of D/A Converters：4
- Settling Time：4.8µs (Typ)
- Output Type：Voltage - Buffered
- Differential Output：No
- Data Interface：SPI
- Reference Type：External, Internal
- Voltage - Supply, Analog：5V
- Voltage - Supply, Digital：5V
- INL/DNL (LSB)：±1, ±1 (Max)
- Architecture：-
- Operating Temperature：0°C ~ 70°C
- Package / Case：16-WFQFN Exposed Pad
- Supplier Device Package：16-QFN (3x3)
- Mounting Type：Surface Mount
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Overview
The LTC2634CUD-HMX12#PBF is a quad 12-bit voltage-output digital-to-analog converter (DAC) from Analog Devices Inc. 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 utilizes a 3-wire SPI/MICROWIRE compatible interface with clock rates up to 50MHz. Key specifications include a maximum integral nonlinearity error of ±2.5 LSB, rail-to-rail output buffers, and ultralow crosstalk between DACs. It incorporates a power-on reset circuit that sets outputs to mid-scale in external reference mode.
Feature Summary
- Quad 12-bit resolution with integrated 10ppm/°C precision reference
- Rail-to-rail output buffers with 4.096V full-scale range
- SPI/MICROWIRE compatible 3-wire serial interface operating at 50MHz
- Power-on reset to mid-scale in external reference mode
Applications
- Mobile Communications
- Process Control and Industrial Automation
- Automatic Test Equipment
- Portable Equipment
- Automotive
Procurement Notes
Verify the specific suffix #PBF indicates lead-free compliance and standard tube packaging for the QFN package. Confirm the H-grade designation corresponds to the automotive temperature range of -40°C to 125°C. Ensure the MXX suffix correctly identifies the mid-scale reset behavior in external reference mode as documented in the ordering information section.
Selection Notes
Select this part when a quad 12-bit DAC with high accuracy and low drift is required. The H-grade variant supports higher supply voltages (4.5V to 5.5V) compared to the L-grade. The MX suffix is critical if mid-scale initialization in external reference mode is necessary for system safety or initialization sequences.
Part Context
This component belongs to the LTC2634 family, which includes 8-, 10-, and 12-bit variants. The CUD package denotes the commercial temperature grade (0°C to 70°C) in a 16-lead QFN format. The H suffix in the model number specifies the automotive temperature range (-40°C to 125°C), distinguishing it from lower-grade options within the same package type.
Replacement Considerations
LTC2634CUD-LMX12#PBF: Same package and reset behavior but different temperature grade and supply range. LTC2634IUD-HMX12#PBF: Industrial temperature grade (-40°C to 85°C). LTC2634HMX12#TRPBF: Tape and reel packaging instead of tube.
