TPL1401DSGRQ1 Texas Instruments Integrated Circuit (Small Outline No-lead) In Stock
The TPL1401DSGRQ1 is an AEC-Q100 automotive-grade 256-tap digital potentiometer with a buffered wiper output, offering high accuracy resistance adjustment via SPI interface from a 1.8 V to 5.5 V supply. It provides programmable resistance in a compact SON package, suitable for precision analog trimming and calibration. Available from stock worldwide with RoHS compliance.
- Manufacturer
- Texas Instruments
- Package
- Small Outline No-lead
- Pin Count
- 9
- Lifecycle
- ACTIVE
- Datasheet
- TPL1401DSGRQ1 Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of TPL1401DSGRQ1?
- 256-tap resolution enabling fine-grain resistance adjustment with less than 0.4% end-to-end linearity error for precision trimming
- AEC-Q100 automotive qualification supporting reliable operation from -40°C to 125°C in harsh vehicle environments
- Buffered wiper output drives resistive loads without loading the resistor ladder, improving gain accuracy in amplifier circuits
- 1.8 V to 5.5 V supply range with SPI interface enabling use across 3.3 V and 5 V automotive and industrial systems
What is TPL1401DSGRQ1 used for?
The TPL1401DSGRQ1 is designed for precision analog calibration and trimming in automotive sensor conditioning circuits, where a fixed resistor cannot meet production tolerance requirements. Its AEC-Q100 qualification and -40°C to 125°C operating range make it suitable for under-hood automotive ECU designs. It is also used in audio volume control, programmable gain amplifiers, and industrial calibration references where digital control of resistance is required.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the TPL1401DSGRQ1 datasheet?
TPL1401DSGRQ1 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for TPL1401DSGRQ1?
Compatible alternatives and drop-in replacements for TPL1401DSGRQ1:
Digital Potentiometer, 1 Func, 50000ohm, 2-wire Serial Control Interface, 256 Positions, PDSO8
Digital Potentiometer, 1 Func, 50000ohm, 2-wire Serial Control Interface, 256 Positions, PDSO8
Frequently Asked Questions
How many resistance steps does TPL1401DSGRQ1 provide and what interface controls the setting?
TPL1401DSGRQ1 offers 256 wiper positions (taps) controlled via a standard SPI-compatible serial interface, allowing software to set resistance digitally without mechanical adjustment. Each step changes the wiper resistance by a fixed increment across the total resistance range, enabling precise 8-bit analog trimming from a microcontroller.
What temperature range does TPL1401DSGRQ1 support for automotive ECU applications?
TPL1401DSGRQ1 is AEC-Q100 Grade 1 qualified and operates across a -40°C to 125°C temperature range, meeting the thermal demands of engine-bay and under-hood automotive electronic control units. This qualification ensures resistance accuracy and wiper position retention under the thermal cycling conditions required by automotive OEM standards.
How does the buffered wiper output of TPL1401DSGRQ1 benefit amplifier gain-setting circuits?
The buffered wiper output presents a low impedance to the feedback network, preventing the resistor ladder's wiper impedance from introducing gain error in op-amp configurations. Without buffering, wiper resistance in an unbuffered digipot would shift the effective gain by several percent; the TPL1401DSGRQ1 buffer reduces this error to near zero across 256 tap positions.
What supply voltage range does TPL1401DSGRQ1 accept and how does that affect mixed-voltage system design?
TPL1401DSGRQ1 operates from 1.8 V to 5.5 V, allowing it to be powered from either the 3.3 V or 5 V rails present in mixed-voltage automotive and industrial systems without a separate LDO. The SPI interface is logic-level compatible with both 1.8 V and 3.3 V microcontrollers, eliminating the need for external level translators.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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