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Analog Devices Inc./Maxim Integrated DS3501U+T&R/C
- Part No.:
- DS3501U+T&R/C
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Digital Potentiometers
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
DS3501U+T&R/C.pdf
- Description:
- IC DGTL POT 10KOHM 128TAP 10UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:3,358
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Product details
Overview
The DS3501U+T&R/C from Maxim Integrated is a 7-bit, nonvolatile digital potentiometer with integrated temperature sensor and 36-byte lookup table (LUT), supporting analog voltage range up to 15.5V, I²C interface up to 400kHz, and 128 wiper tap points. It enables closed-loop temperature-compensated resistance tuning in TFT-LCD VCOM calibration circuits.
For engineers reviewing the DS3501U+T&R/C datasheet, DS3501U+T&R/C pinout, DS3501U+T&R/C application, or DS3501U+T&R/C equivalent, key selection considerations include its 10-pin µSOP package, -40°C to +100°C operating range, NV IVR + LUT architecture for thermal drift correction, and compatibility with ISL95311 in Default Mode.
Technical Context
The DS3501U+T&R/C operates in three configurable modes: Default Mode (pin/software compatible with ISL95311), LUT Mode (wiper driven solely by temperature-indexed LUT output), and LUT Adder Mode (wiper = LUTVAL + NV IVR). Mode selection is controlled by nonvolatile CR1 bits (Update Mode and Adder Mode).
Its on-chip 8-bit temperature sensor provides ±5°C accuracy over -40°C to +100°C, with conversion time of 16ms per frame; the 8-bit VCC monitor reads at address 0Eh. The LUT supports 36 entries covering -37°C to ≥100°C in 4°C windows with 1°C hysteresis to prevent chattering at boundaries.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 7-bit (128 wiper positions), enabling fine-grained analog adjustment in precision biasing applications. |
| End-to-End Resistance | 10kΩ ±20% at +25°C; stable ratiometric tempco of ±4 ppm/°C when WR=40h. |
| Analog Voltage Range | 4.5V to 15.5V across RH–RL; supports high-voltage display bias rails without external level shifting. |
| I²C Interface Speed | Up to 400kHz fast-mode; backward-compatible with standard-mode timing for legacy system integration. |
| Temperature Sensing | ±5°C error over full -40°C to +100°C range; signed two's complement output readable at address 0Ch. |
| Nonvolatile Memory | 200,000 write cycles at +25°C; supports field-programmable LUT and IVR without wear-out concerns in industrial deployments. |
| Supply Current | 250–350µA active (LUT mode, no I²C traffic); 40–60µA standby with CR2.0 = 1 - enables low-power thermal compensation. |
Pinout & Package
DS3501U+T&R/C is housed in a 10-pin µSOP package (2.1mm × 3.0mm, 0.5mm pitch), lead-free and tape-and-reel formatted for automated SMT assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SDA (Pin 1) | I²C bidirectional data line | Open-drain interface requiring external pull-up; supports multi-drop bus with A0/A1 address selection. |
| GND (Pin 2) | Ground reference | Common return for digital logic (VCC) and analog bias (V+) domains; critical for noise isolation in mixed-signal operation. |
| VCC (Pin 3) | Digital supply input | 2.7V–5.5V logic rail; powers I²C interface, control logic, and ADC - independent of high-voltage analog domain. |
| A0, A1 (Pins 4–5) | I²C slave address inputs | Set 7-bit slave address (01010A1A0X); enable up to four DS3501U+T&R/C devices on one I²C bus without address conflict. |
| RH (Pin 6) | Potentiometer high terminal | Connects to maximum analog voltage (up to V+ = 15.5V); defines upper end of resistive ladder. |
| RW (Pin 7) | Wiper output terminal | Delivers programmable voltage divider output; rated for ≤1mA continuous current; directly drives VCOM lines. |
| RL (Pin 8) | Potentiometer low terminal | Connects to minimum analog voltage (e.g., ground or negative rail); completes voltage-divider path with RH and RW. |
| V+ (Pin 9) | Analog bias supply | 4.5V–15.5V high-voltage rail powering the resistive ladder; electrically isolated from VCC domain. |
| SCL (Pin 10) | I²C clock input | Input-only clock line; synchronizes all register reads/writes and LUT updates; tolerant of 400kHz timing. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated temperature sensor + ADC | Enables autonomous thermal compensation without external sensing components or MCU intervention. |
| 36-byte NV lookup table (LUT) | Stores custom wiper settings across 36 temperature windows (-37°C to ≥100°C), allowing arbitrary compensation curves. |
| LUT Adder Mode (IVR + LUTVAL) | Supports signed two's complement LUT entries for programmable positive/negative offsets relative to nominal IVR setting. |
| Standby mode (CR2.0 = 1) | Halts temperature conversions and LUT updates while preserving I²C accessibility - reduces ICC to 40–60µA. |
| Pin/software compatibility with ISL95311 | Allows drop-in replacement in existing designs using Default Mode, simplifying qualification and migration paths. |
Applications
| TFT-LCD VCOM Calibration | Linear and Nonlinear Compensation |
|---|---|
Use Scenario: Precise DC bias adjustment of common electrode (VCOM) voltage in active-matrix LCD panels to minimize image flicker and crosstalk. IC Role / Device Role / Timing Role: Nonvolatile digital potentiometer providing temperature-adaptive VCOM voltage via LUT-driven wiper positioning. Use Value: Eliminates manual trim during production and compensates for panel gamma shift across operating temperature - improves yield and display uniformity. | Use Scenario: Correction of gain/offset drift in analog signal chains (e.g., sensor front-ends, DAC output buffers) due to thermal variation. IC Role / Device Role / Timing Role: Programmable resistor element whose value adapts in real time to ambient temperature measured by on-chip sensor. Use Value: Replaces discrete thermistors + op-amp networks with single-chip solution; achieves <±0.5 LSB INL and ±0.5 LSB DNL over full range. |
| Mechanical POT Replacement | Optical Transceivers |
Use Scenario: Solid-state upgrade of electromechanical potentiometers in industrial HMI panels, test equipment, and programmable power supplies. IC Role / Device Role / Timing Role: Digitally controlled, shock/vibration-immune resistance element with EEPROM-persistent settings and I²C reconfiguration. Use Value: Enables remote calibration, firmware-based tuning, and lifetime reliability exceeding mechanical counterparts - no contact wear or drift. | Use Scenario: Bias voltage control for laser diode drivers and transimpedance amplifiers in SFP/SFP+ modules operating across extended temperature ranges. IC Role / Device Role / Timing Role: High-voltage (up to 15.5V), temperature-compensated current-setting resistor in optical transmit path. Use Value: Maintains consistent optical output power (Tx power) despite ambient fluctuations - meets GR-468 reliability requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL95311IRZ-T | No on-chip temperature sensor or LUT; only Default Mode operation; identical pinout and I²C protocol. | Lacks autonomous thermal compensation - requires external MCU-based calibration loop. | Select when thermal drift is negligible or managed externally; lower cost where LUT functionality is unused. |
| AD5171BRMZ-10 | 64-tap, 10kΩ, I²C interface; no temperature sensor; volatile wiper register only (no NV memory). | Requires host MCU to reload wiper setting after power cycle; unsuitable for unattended recalibration. | Select for cost-sensitive, non-critical biasing where power-loss recovery isn't required and thermal stability is secondary. |
Compared with ISL95311IRZ-T and AD5171BRMZ-10, the DS3501U+T&R/C uniquely integrates temperature sensing, NV LUT storage, and adder-mode arithmetic - delivering self-contained, field-programmable thermal compensation without host processor dependency.
Availability
DS3501U+T&R/C is available at Aetrix Electronics and suitable for TFT-LCD VCOM calibration, optical transceiver biasing, and industrial instrumentation requiring stable component supply across extended temperature and high-voltage conditions.
Supply support for DS3501U+T&R/C includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Maxim Integrated (now part of Analog Devices) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and consumer applications.
The DS3501U+T&R/C belongs to Maxim's precision digital potentiometer product line, designed specifically for high-voltage, temperature-critical analog trimming tasks where mechanical pots fail - such as display biasing and optical module calibration.
FAQ
What is the maximum analog voltage the DS3501U+T&R/C can handle across RH and RL?
The DS3501U+T&R/C supports an analog voltage range of 4.5V to 15.5V across RH and RL terminals, with absolute maximum rating of -0.5V to +17V on V+. This enables direct use in high-voltage display bias rails without external level-shifting circuitry. The device maintains specified performance up to 15.5V under recommended operating conditions.
How does the DS3501U+T&R/C achieve temperature compensation without external components?
The DS3501U+T&R/C achieves autonomous temperature compensation using its integrated 8-bit temperature sensor and 36-byte nonvolatile lookup table (LUT). The sensor measures die temperature every 16ms; its output indexes into the LUT to retrieve a preprogrammed wiper value, which is then applied to the potentiometer - all without MCU involvement in LUT Mode or LUT Adder Mode.
Is the DS3501U+T&R/C pin-compatible with the ISL95311?
Yes - in Default Mode (Update Mode bit = 0), the DS3501U+T&R/C is pin and software compatible with the ISL95311. Both share identical 10-pin µSOP footprint, I²C addressing scheme (A0/A1), register map for WR/IVR at 00h, and functional behavior. This allows seamless drop-in replacement where thermal compensation is not required.
What is the endurance specification for the nonvolatile memory in the DS3501U+T&R/C?
The DS3501U+T&R/C guarantees 200,000 write cycles for its EEPROM-based nonvolatile memory at +25°C, and 50,000 write cycles at +70°C. This applies to both the Initial Value Register (IVR) and the 36-byte LUT. Endurance is sufficient for factory programming, field calibration updates, and periodic LUT revisions in industrial deployments.
Can the DS3501U+T&R/C operate with different supply voltages for digital and analog domains?
Yes - the DS3501U+T&R/C features dual-supply architecture: VCC (2.7V–5.5V) powers the I²C interface and digital logic, while V+ (4.5V–15.5V) independently biases the resistive ladder. This separation prevents digital noise coupling into analog outputs and enables operation in systems where logic and analog rails differ - such as 3.3V microcontrollers controlling 12V display bias rails.
DS3501U+T&R/C Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Taper:
- Linear
- Configuration:
- Potentiometer
- Number of Circuits:
- 1
- Number of Taps:
- 128
- Resistance (Ohms):
- 10k
- Interface:
- I2C
- Memory Type:
- Non-Volatile
- Voltage - Supply:
- 2.7V ~ 5.5V, 4.5V ~ 15.5V
- Features:
- Selectable Address
- Tolerance:
- ±20%
- Temperature Coefficient (Typ):
- ±4ppm/°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 10-uMAX/uSOP
- Operating Temperature:
- -40°C ~ 100°C
- Resistance - Wiper (Ohms) (Typ):
- 5000 (Max)
DS3501U+T&R/C FAQ
1.How can I place an order for DS3501U+T&R/C through Aetrix?
Please submit a Request for Quotation (RFQ) for DS3501U+T&R/C on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for DS3501U+T&R/C reliable?
The price and inventory of DS3501U+T&R/C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS3501U+T&R/C is usually 5 days.
3.What payment methods are accepted for DS3501U+T&R/C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS3501U+T&R/C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS3501U+T&R/C?
DS3501U+T&R/C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS3501U+T&R/C order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for DS3501U+T&R/C?
For technical support, including DS3501U+T&R/C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS3501U+T&R/C requirements.
6.How does Aetrix verify that DS3501U+T&R/C is sourced from the original manufacturer or authorized distributors?
All DS3501U+T&R/C products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that DS3501U+T&R/C meets industry standards.
7.What is the process for return or replacement of DS3501U+T&R/C?
All DS3501U+T&R/C units undergo pre-shipment inspection (PSI). If there is an issue with DS3501U+T&R/C, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The DS3501U+T&R/C part is unused and in its original packaging.
Return procedure for DS3501U+T&R/C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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