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LTC2620IUFD#PBF
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Product Detailed Parameters
- Description：IC DAC 12BIT V-OUT 20QFN
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Number of Bits：12
- Number of D/A Converters：8
- Settling Time：7µs (Typ)
- Output Type：Voltage - Buffered
- Differential Output：No
- Data Interface：SPI
- Reference Type：External
- Voltage - Supply, Analog：2.5V ~ 5.5V
- Voltage - Supply, Digital：2.5V ~ 5.5V
- INL/DNL (LSB)：±0.75, ±0.5 (Max)
- Architecture：-
- Operating Temperature：-40°C ~ 85°C
- Package / Case：20-WFQFN Exposed Pad
- Supplier Device Package：20-QFN (4x5)
- Mounting Type：Surface Mount
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Overview
The LTC2620IUFD#PBF is an octal 12-bit rail-to-rail voltage-output digital-to-analog converter (DAC) in a 20-lead 4mm × 5mm QFN package. It operates on a single 2.5V to 5.5V supply and features built-in high-performance output buffers capable of sourcing or sinking at least 15mA. The device utilizes a simple SPI/MICROWIRE compatible 3-wire serial interface with clock rates up to 50MHz, supporting daisy-chaining and hardware clear functions. It includes a power-on reset circuit that ensures outputs remain at zero-scale during initialization.
Feature Summary
- Octal 12-bit resolution with guaranteed 16-bit monotonicity over temperature
- Ultralow crosstalk between DACs (<10μV) and high rail-to-rail output drive (±15mA min)
- Individual channel power-down mode reduces current to 1μA max per channel
- Double-buffered digital inputs with 3-wire serial interface operating up to 50MHz
Applications
- Mobile Communications
- Process Control and Industrial Automation
- Instrumentation
- Automatic Test Equipment
Procurement Notes
Verify the 'I' suffix indicates an industrial temperature range of –40°C to 85°C and the 'UFD' suffix denotes the 20-lead QFN package. Confirm RoHS compliance via the '#PBF' lead-free finish designation. Ensure the external reference voltage does not exceed the VCC supply voltage for optimal performance.
Selection Notes
Select this component when board density is critical due to its pin-compatible octal configuration. Choose the LTC2620 for 12-bit applications; use LTC2610 for 14-bit or LTC2600 for 16-bit resolution if higher precision is required. All variants share the same footprint and interface, simplifying design upgrades.
Part Context
This part belongs to the LTC2600/LTC2610/LTC2620 family of smallest pin-compatible octal DACs. It shares identical physical dimensions and pinouts with the 16-bit LTC2600 and 14-bit LTC2610, allowing for direct footprint substitution across different resolution requirements within the same product line.
Replacement Considerations
Pin-compatible replacements include the LTC2600IUFD#PBF (16-bit) and LTC2610IUFD#PBF (14-bit). Lower resolution options like the LTC1660 or LTC1665 are also pin-compatible but offer 10-bit or 8-bit resolution respectively.
