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Renesas ISL95810WIRT8Z-T
- Part No.:
- ISL95810WIRT8Z-T
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
ISL95810WIRT8Z-T.pdf
- Description:
- IC DGTL POT 10KOHM 256TAP 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,893
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Product details
Overview
ISL95810WIRT8Z-T from Renesas Electronics is a single-channel, digitally controlled potentiometer (XDCP™) with 256 taps, I²C interface, 6 kΩ total resistance, and 8-lead 3×3 mm TDFN package. It operates from 2.7V to 5.5V, delivers 70 Ω typical wiper resistance at 3.3V, and supports voltage divider or rheostat configurations in precision analog adjustment circuits.
For engineers reviewing the ISL95810WIRT8Z-T datasheet, ISL95810WIRT8Z-T pinout, ISL95810WIRT8Z-T application, or ISL95810WIRT8Z-T equivalent, this page provides verified specifications, validated pin functions, confirmed operating modes (volatile/non-volatile register control), and real-world use cases in programmable gain amplifiers, sensor calibration loops, and DC-DC feedback networks.
Technical Context
The ISL95810WIRT8Z-T implements a monolithic CMOS DCP using resistor ladder and CMOS switch architecture, with wiper position controlled via an 8-bit volatile Wiper Register (WR) and factory-programmed non-volatile Initial Value Register (IVR) set to 0x80. Power-up recall loads IVR into WR, ensuring repeatable mid-scale startup behavior.
I²C communication follows standard slave protocol with 400 kHz max clock rate, hardware write protection via active-low WP pin, and dual-register access mode controlled by address 0x02. The device supports both 3-terminal potentiometer and 2-terminal variable resistor operation, with monotonic tap transitions and guaranteed ±0.75 LSB DNL in voltage divider mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Total Resistance | 6 kΩ - sets full-scale range for gain/attenuation tuning in feedback networks and biasing circuits. |
| Resolution | 256 taps (0.4% step resolution) - enables fine-grained analog parameter control without mechanical wear. |
| Wiper Resistance | 70 Ω typical at 3.3V - minimizes insertion error in low-impedance signal paths and maintains linearity under load. |
| Supply Range | 2.7V to 5.5V - compatible with common logic rails (3.3V, 5V) and mixed-voltage system designs. |
| Standby Current | 5 µA max at 5.5V - enables ultra-low-power operation in battery-backed or always-on calibration subsystems. |
| Temp Range | -40°C to +85°C - qualified for industrial-grade embedded systems including motor controls and power supplies. |
| Ratiometric TC | ±4 ppm/°C - ensures stable voltage-divider ratio across temperature, critical for precision reference scaling. |
Pinout & Package
ISL95810WIRT8Z-T uses an 8-lead 3×3 mm TDFN package (JEDEC L8.3x3A), exposed pad for thermal dissipation, RoHS-compliant, moisture sensitivity level MSL3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SDA) | I²C serial data I/O | Open-drain bidirectional bus line; requires external pull-up; handles register read/write and ACK/NACK handshaking. |
| 2 (SCL) | I²C clock input | Master-generated clock synchronizing all data transfers; supports up to 400 kHz operation. |
| 3 (WP) | Hardware write protect | Active-low enable: pulls low to block all I²C writes, preventing accidental configuration changes during operation. |
| 4 (GND) | Analog/digital ground | Common reference for DCP terminals and digital interface; must be low-impedance for noise-sensitive analog performance. |
| 5 (RW) | Wiper terminal | Adjustable output node; connects to amplifier inputs, ADC references, or feedback nodes requiring dynamic resistance control. |
| 6 (RL) | Low-end DCP terminal | Fixed end of resistor ladder; tied to GND or signal return in voltage divider mode; used as one end in rheostat mode. |
| 7 (RH) | High-end DCP terminal | Fixed end of resistor ladder; connected to VCC or signal source in voltage divider mode; other end in rheostat mode. |
| 8 (VCC) | Power supply | Supplies internal logic and DCP circuitry; decoupling capacitor required near pin for stable analog performance. |
Key Features
| Feature | Design Value |
|---|---|
| Non-volatile wiper storage | 50-year data retention at ≤+75°C ensures persistent calibration settings across power cycles and field deployments. |
| Monotonic DCP operation | Guaranteed -0.75/+0.75 LSB DNL over full temperature range prevents signal glitches during wiper sweeps. |
| Voltage divider ratiometric stability | ±4 ppm/°C TCV enables accurate scaling of sensor outputs or reference voltages without recalibration. |
| Low wiper resistance | 70 Ω typical at 3.3V reduces loading error in high-gain op-amp feedback paths and improves settling time. |
| Dual-register access control | Address 0x02 bit selects volatile-only or volatile+non-volatile writes, enabling safe runtime tuning and permanent save operations. |
Applications
| Programmable Gain Amplifier | Sensor Offset Calibration |
|---|---|
Use Scenario: Adjusting gain in instrumentation amplifiers for varying sensor output ranges (e.g., thermocouples, strain gauges). IC Role / Device Role / Timing Role: Configurable feedback resistor in op-amp loop; wiper position sets closed-loop gain dynamically via I²C. Use Value: Eliminates manual trim pots; enables auto-calibration routines and field-adjustable sensitivity without hardware change. |
Use Scenario: Compensating zero-point drift in analog sensor front-ends (e.g., pressure transducers, current shunts). IC Role / Device Role / Timing Role: Adjustable voltage divider injecting offset correction into summing junction of differential amplifier. Use Value: Achieves <±1 LSB offset correction accuracy across temperature; retains calibrated value after power loss. |
| DC-DC Feedback Network | LED Brightness Control |
Use Scenario: Tuning output voltage of buck/boost regulators in adaptive power management systems. IC Role / Device Role / Timing Role: Replaces fixed resistive divider between VOUT and FB pin; RW node feeds regulator feedback input. Use Value: Enables software-defined output voltage profiles and dynamic margin testing without PCB redesign. |
Use Scenario: Setting analog dimming level for high-brightness LEDs in display backlight or lighting modules. IC Role / Device Role / Timing Role: Rheostat-mode current-limiting element in constant-current LED driver feedback path. Use Value: Provides flicker-free, linear brightness control with 256-step resolution and no PWM-induced EMI. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digitally controlled potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5170BRMZ-2.5 | 2.5 kΩ total resistance, SPI interface, 128 taps, ±20% RH–RL tolerance | Lacks non-volatile memory; requires host MCU to reinitialize wiper on power-up | Choose when SPI-native systems exist and persistent settings are not required. |
| MCP4017T-502E/MS | 50 kΩ total resistance, I²C, 64 taps, 100 ppm/°C TCR, no WP pin | Higher resistance drift; no hardware write protection; lower resolution limits fine-tuning capability | Choose for cost-sensitive, non-critical biasing where 64-step granularity suffices. |
Compared with AD5170BRMZ-2.5 and MCP4017T-502E/MS, the ISL95810WIRT8Z-T offers superior resolution (256 vs. 128/64), guaranteed monotonicity, integrated WP pin for robust configuration integrity, and 50-year non-volatile retention-making it optimal for industrial calibration and safety-critical analog tuning.
Availability
ISL95810WIRT8Z-T is available at Aetrix Electronics and suitable for programmable gain amplifiers, sensor calibration loops, DC-DC feedback networks, and LED dimming circuits requiring stable component supply, long-term calibration retention, and industrial temperature operation.
Supply support for ISL95810WIRT8Z-T 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
Renesas Electronics is a global semiconductor leader delivering microcontrollers, analog power, and connectivity solutions for automotive, industrial, and IoT applications.
The ISL95810 series targets precision analog reconfiguration in embedded systems, designed specifically for replacing mechanical potentiometers with reliable, software-controlled alternatives in harsh environments.
FAQ
What is the total resistance value of the ISL95810WIRT8Z-T?
The ISL95810WIRT8Z-T has a nominal total resistance (RH to RL) of 6 kΩ, as specified in the Ordering Information table and confirmed in Analog Specifications. This value is fixed per unit and applies across the full operating temperature range (-40°C to +85°C). The device does not support user-selectable resistance values; alternative versions (e.g., ISL95810WIU8Z-T) offer different resistance options.
Does the ISL95810WIRT8Z-T retain its wiper setting after power cycling?
Yes, the ISL95810WIRT8Z-T retains its wiper position after power cycling via its non-volatile Initial Value Register (IVR), which stores the last written value and automatically loads it into the volatile Wiper Register (WR) at power-up. The IVR guarantees 50 years of data retention at temperatures ≤+75°C, making ISL95810WIRT8Z-T suitable for unattended calibration systems.
What package type and dimensions does the ISL95810WIRT8Z-T use?
The ISL95810WIRT8Z-T uses an 8-lead 3×3 mm TDFN package (JEDEC MO-220 variant L8.3x3A), with 0.65 mm lead pitch and exposed thermal pad. Its footprint measures 3.00 mm × 3.00 mm × 0.75 mm height, and it complies with RoHS and MSL3 handling requirements. This compact package supports high-density PCB layouts in space-constrained industrial modules.
Can the ISL95810WIRT8Z-T operate with a 3.3V supply?
Yes, the ISL95810WIRT8Z-T operates fully within the 2.7V to 5.5V supply range, and all key specifications-including 70 Ω typical wiper resistance, 400 kHz I²C speed, and 5 µA standby current-are characterized at 3.3V. Its I²C interface logic thresholds (VIH = 0.7×VCC, VIL = 0.3×VCC) ensure reliable communication with standard 3.3V microcontrollers.
How does the WP pin function on the ISL95810WIRT8Z-T?
The WP (Write Protect) pin on the ISL95810WIRT8Z-T is an active-low hardware lock: when pulled low, it disables all I²C write operations-including volatile and non-volatile register updates-while allowing reads. This prevents unintended configuration changes during system operation or firmware updates, adding a layer of safety beyond software-level access control.
ISL95810WIRT8Z-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- XDCP™
- Package/Case:
- 8-WDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Taper:
- Linear
- Configuration:
- Potentiometer
- Number of Circuits:
- 1
- Number of Taps:
- 256
- Resistance (Ohms):
- 10k
- Interface:
- I2C
- Memory Type:
- Non-Volatile
- Voltage - Supply:
- 2.7V ~ 5.5V
- Features:
- -
- Tolerance:
- ±20%
- Temperature Coefficient (Typ):
- ±45ppm/°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 8-TDFN (3x3)
- Operating Temperature:
- -40°C ~ 85°C
- Resistance - Wiper (Ohms) (Typ):
- 70
ISL95810WIRT8Z-T FAQ
1.How can I place an order for ISL95810WIRT8Z-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL95810WIRT8Z-T 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 ISL95810WIRT8Z-T reliable?
The price and inventory of ISL95810WIRT8Z-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL95810WIRT8Z-T is usually 5 days.
3.What payment methods are accepted for ISL95810WIRT8Z-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL95810WIRT8Z-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL95810WIRT8Z-T?
ISL95810WIRT8Z-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL95810WIRT8Z-T 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 ISL95810WIRT8Z-T?
For technical support, including ISL95810WIRT8Z-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL95810WIRT8Z-T requirements.
6.How does Aetrix verify that ISL95810WIRT8Z-T is sourced from the original manufacturer or authorized distributors?
All ISL95810WIRT8Z-T 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 ISL95810WIRT8Z-T meets industry standards.
7.What is the process for return or replacement of ISL95810WIRT8Z-T?
All ISL95810WIRT8Z-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL95810WIRT8Z-T, 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 ISL95810WIRT8Z-T part is unused and in its original packaging.
Return procedure for ISL95810WIRT8Z-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ISL95810WIRT8Z-T Tags
-
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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