Key Selection Information
| Selection Parameter | Confirmed Information |
|---|---|
| Channels | 1 linear-taper digital potentiometer |
| Resistance | 10 kΩ end-to-end |
| Resolution | 128 wiper positions |
| Interface | I²C; A version address 0101110 |
| Topology | Low terminal internally tied to GND |
| Supply | 2.7 V to 5.5 V |
| Temperature Coefficient | 22 ppm/°C stated feature |
| Exact Package / Packing | SC70 (DCK), 6 pins; 3000-piece large tape and reel |
Product Overview
TPL0401A-10DCKR is a compact single-channel digital potentiometer for applications where one end of the resistive element is intentionally ground-referenced. The internal L-to-GND connection reduces pin count to SC70-6 but also means it cannot be used as a fully floating three-terminal potentiometer.
The A suffix is electrically meaningful because it selects I²C address 0101110; the B version uses a different fixed address. This allows firmware/BOM selection by address without extra hardware address pins.
The -10 portion identifies the 10 kΩ resistance grade, while DCKR is the 3000-piece SC70 reel format. Both address and resistance must be retained when replacing the exact part.
For related devices, see HKEQGOO’s Digital Potentiometers category.
Technical Specifications
| Parameter | Verified Information |
|---|---|
| Manufacturer | Texas Instruments |
| Exact MPN | TPL0401A-10DCKR |
| Channels | 1 linear-taper digital potentiometer |
| Resistance | 10 kΩ end-to-end |
| Resolution | 128 wiper positions |
| Interface | I²C; A version address 0101110 |
| Topology | Low terminal internally tied to GND |
| Supply | 2.7 V to 5.5 V |
| Temperature Coefficient | 22 ppm/°C stated feature |
| Exact Package / Packing | SC70 (DCK), 6 pins; 3000-piece large tape and reel |
| Manufacturer Status | Active / Production |
| Part Marking | 7TD / 7TV |
Functional Highlights
Grounded low terminal simplifies trim circuits but limits topology
It fits gain/threshold/offset adjustments referenced to ground. A circuit requiring both end terminals to float should use a different digital-potentiometer architecture.
Fixed I²C address makes A/B selection part of bus planning
No address pins exist, so two same-address A devices cannot simply share one bus without a mux. Choosing A versus B can solve a two-device address conflict.
Design Considerations
- Confirm the analog node can tolerate L being permanently tied to ground.
- Check wiper/end-terminal current and voltage against the analog supply, not only the I²C logic voltage.
- Reserve A/B addresses in firmware/BOM before populating multiple devices.
Product Status and Exact Order Code
Manufacturer status: Active / Production
Texas Instruments lists TPL0401A-10DCKR as Active / Production; SC70 (DCK), 6 pins; 3000-piece large tape and reel; Level-1-260C-UNLIM; −40°C to +125°C; markings 7TD/7TV.
Related Engineering Resources
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Third-party inspection or testing can be arranged according to customer requirements. Testing fees are borne by the buyer. Additional verification requirements can be discussed before shipment. After an order is placed, physical product, label, packaging, and Date Code photos may be provided where appropriate.
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