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LTC2672IUH-16#TRPBF
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Product Detailed Parameters
- Description：IC DAC 16BIT A-OUT 32LFCSP
- Series：SoftSpan™
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR)
- Number of Bits：16
- Number of D/A Converters：5
- Settling Time：21.1µs (Typ)
- Output Type：Current - Unbuffered
- Differential Output：No
- Data Interface：Serial, SPI
- Reference Type：External, Internal
- Voltage - Supply, Analog：2.85V ~ 5.5V
- Voltage - Supply, Digital：1.7V ~ 5.5V
- INL/DNL (LSB)：±12, ±0.45LSB
- Architecture：Current Source
- Operating Temperature：-40°C ~ 85°C
- Package / Case：32-WFQFN Exposed Pad, CSP
- Supplier Device Package：32-LFCSP (5x5)
- Mounting Type：Surface Mount
- Grade：-
- Qualification：-
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Overview
The LTC2672IUH-16#TRPBF is a five-channel, 16-bit current source digital-to-analog converter (DAC) from Analog Devices. It provides high-compliance outputs with programmable ranges of 300 mA down to 3.125 mA per channel. The device features a guaranteed maximum dropout voltage of 0.6 V at 200 mA and supports flexible single or dual supply operation. Each channel has a dedicated analog supply pin (VDDx), allowing independent voltage levels between 2.1 V and VCC. Internal switches enable connection to an optional negative supply. The unit integrates a precision 1.25 V reference with a maximum temperature coefficient of 10 ppm/°C for the LFCSP package.
Feature Summary
- Five independent 16-bit current source channels with eight programmable output ranges (300 mA to 3.125 mA).
- Guaranteed low dropout voltage of 0.6 V maximum at 200 mA output current.
- Dedicated analog supply pin (VDDx) per channel supporting 2.1 V to VCC operation.
- Integrated precision internal reference (1.25 V) with 10 ppm/°C maximum temperature coefficient.
Applications
- Tunable lasers
- Semiconductor optical amplifier biasing
- Resistive heaters
- Current mode biasing
Procurement Notes
Verify the specific suffix #TRPBF indicates tape and reel packaging when sourcing this component. Confirm that the IUH designation corresponds to the 32-lead LFCSP package variant. Ensure compatibility with the required SPI interface voltage levels defined by IOVCC before procurement.
Selection Notes
Select this model for applications requiring multiple independent current sources with high compliance and low dropout characteristics. The 16-bit resolution ensures fine current control. Consider the thermal performance in the LFCSP package if operating near the upper limits of the current ranges or ambient temperatures up to 125°C.
Part Context
This component belongs to the LTC2672 family of multi-channel DACs. The 'I' grade specifies an extended operating temperature range from -40°C to +125°C. The 'UH' package code identifies the 32-lead lead frame chip scale package (LFCSP). The '#PBF' indicates lead-free finish, while '#TRPBF' denotes the reel packaging format.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. Verify pinout and electrical specifications against any alternative devices to ensure functional compatibility.
FAQ
What is the maximum dropout voltage specified for the LTC2672?
The device guarantees a maximum dropout voltage of 0.6 V at an output current of 200 mA.
Can the output channels be paralleled?
Yes, the channels can be paralleled to allow ultrafine adjustments of large currents or combined outputs of up to 1.5 A.
What is the function of the VDDx pins?
Each output channel has a dedicated supply pin (VDDx) that allows the channel to operate from 2.1 V to VCC, providing flexible power supply configurations.
