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Renesas ISL95311UIU10Z-TK
- Part No.:
- ISL95311UIU10Z-TK
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
ISL95311UIU10Z-TK.pdf
- Description:
- IC DGTL POT 50KOHM 128TAP 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,080
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Product details
Overview
ISL95311UIU10Z-TK from Intersil is a digitally controlled potentiometer (XDCP™) with 128-tap resolution, 50kΩ total resistance, I²C interface, 0V to +13.2V terminal voltage range, and nonvolatile initial value register for power-up wiper recall-used in LCD contrast control and precision bias adjustment circuits.
For engineers reviewing the ISL95311UIU10Z-TK datasheet, ISL95311UIU10Z-TK pinout, ISL95311UIU10Z-TK application, or ISL95311UIU10Z-TK equivalent, this page delivers verified electrical specs, true pin functions, real-world use cases, and confirmed alternative parts for industrial analog tuning and mechanical potentiometer replacement.
Technical Context
The ISL95311UIU10Z-TK implements a 127-element resistor array with CMOS "make-before-break" wiper switching, controlled by a 7-bit volatile Wiper Register (WR) and backed by a nonvolatile Initial Value Register (IVR). Its I²C slave address is configurable via A0/A1 pins, supporting up to four devices on one bus.
It operates in two distinct voltage domains: VCC (2.7V–5.5V) powers logic and memory, while V+ (8.0V–13.2V) biases the DCP terminals RH/RW/RL-enabling high-voltage analog signal conditioning without level-shifting circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RTOTAL | 50kΩ - fixed end-to-end resistance; defines full-scale analog range in voltage divider or variable resistor mode. |
| Terminal Voltage Range | 0V to +13.2V - supports direct connection to high-side analog rails without external level translation. |
| Wiper Resolution | 128 taps (0.8% step size) - enables fine-grained analog tuning with ±1 LSB integral nonlinearity over temperature. |
| Wiper Resistance | 70Ω typical @ 3.3V - low on-resistance preserves signal integrity and minimizes loading in precision feedback paths. |
| Standby Current | 2µA @ VCC = 3.6V - ultra-low quiescent draw suitable for battery-backed or energy-sensitive systems. |
| Nonvolatile Endurance | 200,000 write cycles - sufficient for field calibration updates across product lifetime without wear-out risk. |
| Temperature Coefficient | ±4 ppm/°C (ratiometric), ±45 ppm/°C (absolute) - ensures stable tap-to-tap matching across -40°C to +85°C industrial range. |
Pinout & Package
ISL95311UIU10Z-TK is housed in a Pb-free, RoHS-compliant 10-lead MSOP package (M10.118), measuring 3.0mm × 3.0mm × 1.0mm, optimized for space-constrained PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SDA | I²C bidirectional data line | Open-drain interface requiring external pull-up; supports standard/fast-mode I²C (≤400kHz) with 50ns pulse suppression. |
| 2 GND | Analog/digital ground reference | Common return for VCC logic and DCP bias; must be low-impedance to minimize noise coupling into RW node. |
| 3 VCC | Logic supply input | 2.7V–5.5V digital core supply; powers I²C interface, registers, and control logic-must ramp monotonically before V+. |
| 4 A1 | I²C slave address bit 1 | Configures LSB of 7-bit slave address (01010xx); sets unique device ID alongside A0 for multi-drop bus operation. |
| 5 A0 | I²C slave address bit 0 | Configures LSB of 7-bit slave address (01010xx); enables up to four ISL95311 devices on same I²C bus. |
| 6 RH | High-side potentiometer terminal | Fixed end of resistor array; connects to V+ rail (up to +13.2V); not tied to VCC-supports independent high-voltage biasing. |
| 7 RW | Wiper output terminal | Movable contact point; delivers tapped voltage or resistance between RH and RL; low 70Ω typical resistance preserves signal fidelity. |
| 8 RL | Low-side potentiometer terminal | Fixed end of resistor array; typically grounded or referenced to 0V; forms voltage divider with RH and RW. |
| 9 V+ | DCP bias supply | 8.0V–13.2V analog supply for RH/RW/RL terminals; must be applied after or simultaneously with VCC to prevent undefined wiper states. |
| 10 SCL | I²C clock input | Open-drain clock line requiring external pull-up; timing compliant with I²C fast-mode spec (tLOW ≥1300ns, tHIGH ≥600ns). |
Key Features
| Feature | Design Value |
|---|---|
| Nonvolatile wiper initialization | IVR pre-programmed to 40h (64 decimal) ensures repeatable mid-scale power-up position without host firmware intervention. |
| Make-before-break wiper switching | Eliminates momentary open-circuit or short-circuit conditions during tap transitions-critical for stable feedback loops and bias networks. |
| Independent V+ and VCC supplies | Enables high-voltage analog signal conditioning (e.g., 12V LCD bias) while maintaining 3.3V/5V microcontroller compatibility. |
| Temperature-compensated resistor array | ±4 ppm/°C ratiometric TCV ensures consistent voltage division accuracy across -40°C to +85°C without calibration. |
| Low-leakage DCP terminals | ≤1 µA leakage at RH/RW/RL pins minimizes error in high-impedance sensor biasing or reference divider applications. |
Applications
| LCD Contrast Control | Industrial Sensor Bias Adjustment |
|---|---|
Use Scenario: Adjusting contrast voltage for character or graphic LCD modules in factory HMIs and panel meters. IC Role / Device Role / Timing Role: Three-terminal voltage divider supplying precise, digitally set DC bias to LCD V0 pin. Use Value: Replaces manual trimpot with factory-calibrated, field-updatable contrast setting-eliminating production line tuning and enabling dynamic UI adaptation. | Use Scenario: Calibrating offset voltage in 4–20mA transmitter front-ends or RTD bridge excitation circuits. IC Role / Device Role / Timing Role: Two-terminal variable resistor in op-amp feedback path or Wheatstone bridge leg for programmable gain/offset trimming. Use Value: Enables one-time factory calibration stored in nonvolatile memory, ensuring long-term stability without drift-induced recalibration. |
| Automotive Cabin Controller Tuning | Medical Instrument Parameter Scaling |
Use Scenario: Setting backlight intensity and button illumination levels in automotive infotainment control panels. IC Role / Device Role / Timing Role: High-side adjustable resistor sourcing current to LED strings powered from 12V battery rail. Use Value: Supports 13.2V V+ operation directly from vehicle battery-no LDO required-and retains last-set brightness after ignition cycle. | Use Scenario: Scaling analog output ranges (e.g., 0–5V to 0–10V) in portable ECG or blood glucose meter signal chains. IC Role / Device Role / Timing Role: Precision voltage divider in DAC output buffer or ADC reference divider network. Use Value: 0.8% resolution and ±1 LSB INL ensure sub-0.5% full-scale error-meeting Class II medical device accuracy requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digitally controlled potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5175BRMZ-50 | 50kΩ, SPI interface, 256-tap resolution, 2.7V–5.5V single supply only (no separate V+) | Lacks high-voltage DCP bias capability; requires level-shifting for >5.5V analog rails | Choose when SPI is preferred and all analog signals remain ≤5.5V; lower resolution tolerance (±20%) vs. ISL95311UIU10Z-TK's ±20% RTOTAL but tighter INL. |
| MCP45HV51-503 | 50kΩ, I²C interface, 128-tap, supports 12V V+ but requires external charge pump for VCC generation | Higher standby current (10µA vs. 2µA); no integrated VCC regulator-adds BOM complexity | Choose when existing design uses Microchip ecosystem; verify VCC generation overhead and thermal impact of charge pump. |
Compared with AD5175BRMZ-50 and MCP45HV51-503, the ISL95311UIU10Z-TK uniquely combines independent 13.2V V+ biasing, ultra-low 2µA standby current, and factory-programmed IVR-making it optimal for high-voltage, low-power, calibration-critical industrial and automotive analog tuning.
Availability
ISL95311UIU10Z-TK is available at Aetrix Electronics and suitable for LCD contrast control, industrial sensor biasing, automotive cabin lighting, and medical instrument scaling requiring stable component supply and guaranteed long-term availability.
Supply support for ISL95311UIU10Z-TK 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
Intersil Corporation (now part of Renesas Electronics) designs high-performance analog and power management ICs for industrial, computing, and communications markets.
The ISL95311UIU10Z-TK belongs to Intersil's XDCP™ (eXternally Digitally Controlled Potentiometer) family, engineered specifically for replacing mechanical potentiometers in precision analog tuning applications where reliability, nonvolatility, and high-voltage operation are essential.
FAQ
What is the maximum allowable voltage on the RH, RW, and RL pins of the ISL95311UIU10Z-TK?
The RH, RW, and RL pins of the ISL95311UIU10Z-TK support a maximum voltage of +13.2V relative to GND, as specified in the Absolute Maximum Ratings table. This allows direct connection to 12V systems without external level-shifting components. Operation above this voltage risks permanent damage to the internal resistor array and switches.
Does the ISL95311UIU10Z-TK retain its wiper position after power cycling?
Yes-the ISL95311UIU10Z-TK stores the wiper position in a nonvolatile Initial Value Register (IVR) that is automatically loaded into the volatile Wiper Register (WR) at power-up. The IVR is pre-programmed to 40h (64 decimal), placing the wiper at mid-scale unless reprogrammed, ensuring repeatable startup behavior without host MCU intervention.
Can the ISL95311UIU10Z-TK operate with different supply voltages for logic and analog sections?
Yes-the ISL95311UIU10Z-TK uses separate supplies: VCC (2.7V–5.5V) powers the I²C interface and logic, while V+ (8.0V–13.2V) independently biases the RH/RW/RL terminals. This dual-supply architecture enables high-voltage analog signal conditioning while interfacing seamlessly with 3.3V or 5V microcontrollers.
What is the I²C address configuration method for the ISL95311UIU10Z-TK?
The ISL95311UIU10Z-TK uses pins A0 and A1 to configure the two least-significant bits of its 7-bit I²C slave address (base 01010xx). With both pins grounded, the address is 0x28; with A0=high/A1=low, it becomes 0x29. This allows up to four ISL95311UIU10Z-TK devices on a single I²C bus without address conflict.
How does the ISL95311UIU10Z-TK handle wiper transitions to prevent glitches?
The ISL95311UIU10Z-TK employs "make-before-break" switching during wiper transitions, ensuring continuous conduction between adjacent taps. This eliminates momentary open-circuits or shorts that could disrupt sensitive analog circuits-such as op-amp feedback paths or voltage references-maintaining signal continuity throughout tap changes.
ISL95311UIU10Z-TK Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- XDCP™
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Taper:
- Linear
- Configuration:
- Potentiometer
- Number of Circuits:
- 1
- Number of Taps:
- 128
- Resistance (Ohms):
- 50k
- Interface:
- I2C
- Memory Type:
- Non-Volatile
- Voltage - Supply:
- 2.7V ~ 5.5V
- Features:
- Selectable Address
- Tolerance:
- ±20%
- Temperature Coefficient (Typ):
- ±45ppm/°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 10-MSOP
- Operating Temperature:
- -40°C ~ 85°C
- Resistance - Wiper (Ohms) (Typ):
- 70
ISL95311UIU10Z-TK FAQ
1.How can I place an order for ISL95311UIU10Z-TK through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL95311UIU10Z-TK 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 ISL95311UIU10Z-TK reliable?
The price and inventory of ISL95311UIU10Z-TK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL95311UIU10Z-TK is usually 5 days.
3.What payment methods are accepted for ISL95311UIU10Z-TK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL95311UIU10Z-TK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL95311UIU10Z-TK?
ISL95311UIU10Z-TK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL95311UIU10Z-TK 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 ISL95311UIU10Z-TK?
For technical support, including ISL95311UIU10Z-TK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL95311UIU10Z-TK requirements.
6.How does Aetrix verify that ISL95311UIU10Z-TK is sourced from the original manufacturer or authorized distributors?
All ISL95311UIU10Z-TK 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 ISL95311UIU10Z-TK meets industry standards.
7.What is the process for return or replacement of ISL95311UIU10Z-TK?
All ISL95311UIU10Z-TK units undergo pre-shipment inspection (PSI). If there is an issue with ISL95311UIU10Z-TK, 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 ISL95311UIU10Z-TK part is unused and in its original packaging.
Return procedure for ISL95311UIU10Z-TK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ISL95311UIU10Z-TK Tags
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MCP4018T-103E/LT
Microchip Technology
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MCP4018T-503E/LT
Microchip Technology
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MCP4011T-103E/SN
Microchip Technology
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MCP4018T-104E/LT
Microchip Technology
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MCP4017T-503E/LT
Microchip Technology
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MCP4018T-502E/LT
Microchip Technology
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MCP4017T-103E/LT
Microchip Technology
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MCP4531T-103E/MF
Microchip Technology
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MCP4021T-202E/SN
Microchip Technology
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MCP4023T-103E/CH
Microchip Technology
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MCP4022T-503E/CH
Microchip Technology
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MCP4551T-502E/MS
Microchip Technology
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