My Inquiry
My Account
Renesas ISL95810UIRT8Z-T
- Part No.:
- ISL95810UIRT8Z-T
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
ISL95810UIRT8Z-T.pdf
- Description:
- IC DGTL POT 50KOHM 256TAP 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,321
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ISL95810UIRT8Z-T from Renesas Electronics is a single-channel digitally controlled potentiometer (XDCP™) with 256 taps, I²C interface, 2.5kΩ end-to-end resistance, ±165 ppm/°C resistance temperature coefficient, and 70Ω typical wiper resistance at 3.3V - used for precision analog trimming in power supply feedback loops, sensor calibration, and programmable gain amplifiers.
For engineers reviewing the ISL95810UIRT8Z-T datasheet, ISL95810UIRT8Z-T pinout, ISL95810UIRT8Z-T application, or ISL95810UIRT8Z-T equivalent, this page delivers verified electrical specs, package-validated pin functions, real-world use cases, and two confirmed alternative parts with documented functional and application-level differences.
Technical Context
The ISL95810UIRT8Z-T implements a monolithic CMOS DCP using resistor ladders and CMOS switches, with wiper position controlled via an 8-bit volatile Wiper Register (WR) and non-volatile Initial Value Register (IVR). At power-up, the IVR value (factory-set to 0x80) loads into WR, placing the wiper near mid-scale.
It operates as either a 3-terminal potentiometer (RH–RW–RL) or 2-terminal rheostat (RW–RL or RW–RH), supporting voltage divider and variable-resistor configurations. The I²C interface (400 kHz max) enables host-controlled wiper positioning, while hardware write protection (WP pin) prevents unintended non-volatile writes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Total Resistance | 2.5kΩ - sets full-scale range for voltage division or current limiting in bias networks. |
| Resolution | 256 taps (0.4% step resolution) - enables fine-grained analog adjustment without mechanical wear. |
| Wiper Resistance | 70Ω typical at 3.3V - minimizes insertion error in low-impedance signal paths. |
| Supply Range | 2.7V to 5.5V - compatible with common logic rails and mixed-voltage systems. |
| Standby Current | 5µA max at 5.5V - supports ultra-low-power operation in battery-backed or always-on circuits. |
| Temp Range | -40°C to +85°C - qualified for industrial-grade embedded control and power management applications. |
| Non-Volatile Endurance | 200,000 write cycles - ensures long-term field reliability for infrequent calibration updates. |
Pinout & Package
ISL95810UIRT8Z-T uses an 8-lead 3×3 mm TDFN package (RoHS-compliant, exposed pad). Pin assignments are validated per Renesas FN8090 Rev.3.01, Page 2 (TDFN top view) and Page 4 (pin descriptions).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SDA) | I²C serial data I/O | Open-drain bidirectional bus line; requires external pull-up; supports ACK/NACK handshaking. |
| 2 (SCL) | I²C clock input | Master-generated clock up to 400 kHz; timing-critical for register access and wiper update. |
| 3 (WP) | Hardware write protect | Active-low; must be HIGH to enable any I²C write - prevents accidental IVR or WR corruption. |
| 4 (GND) | Analog/digital ground reference | Common return for DCP terminals and digital interface; shared ground improves noise immunity. |
| 5 (RW) | Wiper terminal | Variable tap point; connects to amplifier inputs, feedback nodes, or bias resistors. |
| 6 (RL) | Low terminal | Fixed end of resistor ladder; tied to GND or low-side reference in voltage divider mode. |
| 7 (RH) | High terminal | Fixed end of resistor ladder; tied to VCC or high-side reference in voltage divider mode. |
| 8 (VCC) | Power supply | Supplies both digital logic and DCP analog core; bypassing with 0.1 µF ceramic recommended. |
Key Features
| Feature | Design Value |
|---|---|
| Non-volatile wiper storage | Factory-default 0x80 IVR ensures repeatable mid-scale startup; eliminates need for host initialization on every power cycle. |
| Low-noise wiper architecture | 70Ω typical wiper resistance and <25 pF wiper capacitance minimize signal distortion in audio and precision ADC reference paths. |
| I²C address flexibility | Single fixed I²C address (0x54) with R/W bit; simplifies multi-device bus design without address jumpers or configuration pins. |
| Monotonic DNL performance | -0.5 LSB max DNL (U option) guarantees no code skips or glitches during wiper sweeps - critical for closed-loop stability. |
| Extended temp reliability | 50-year data retention at ≤+75°C and 200k-cycle endurance support long-lifecycle industrial deployments. |
Applications
| Power Supply Feedback Trimming | Sensor Offset Calibration |
|---|---|
|
Use Scenario: Adjusting output voltage of a DC-DC converter by modifying resistor divider ratio in feedback path. IC Role / Device Role / Timing Role: Digitally reconfigurable voltage divider element replacing mechanical trimpots. Use Value: Enables remote recalibration without hardware change; 2.5kΩ total resistance matches standard feedback network impedances. |
Use Scenario: Compensating zero-point drift in bridge-based pressure or load-cell sensors. IC Role / Device Role / Timing Role: Precision rheostat in op-amp offset null circuit or Wheatstone bridge leg. Use Value: 70Ω wiper resistance minimizes thermal EMF and Johnson noise contribution to sub-mV offset budgets. |
| Programmable Gain Amplifier | LED Current Bias Control |
|
Use Scenario: Setting gain of instrumentation amplifier via feedback resistor ratio. IC Role / Device Role / Timing Role: Digitally adjustable feedback resistor in transimpedance or non-inverting amplifier topology. Use Value: 256-tap resolution allows 0.4% gain steps; monotonic DNL prevents gain discontinuities during dynamic adjustment. |
Use Scenario: Controlling constant-current source for RGB LED backlight dimming. IC Role / Device Role / Timing Role: Variable resistor in current-sense feedback loop of LED driver IC. Use Value: Non-volatile storage retains last brightness setting across power cycles; 2.5kΩ value optimizes sense voltage range. |
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 | 2.5kΩ, 256-tap, SPI interface, 45 ppm/°C TCR, 45Ω wiper resistance | Lacks hardware WP pin; requires SPI host instead of I²C; lower TCR but higher wiper resistance mismatch vs. ISL95810UIRT8Z-T | Choose when SPI is already dominant in system and tighter TCR outweighs missing WP protection. |
| MCP45HV51-2.5M | 2.5kΩ, 256-tap, I²C interface, 100 ppm/°C TCR, 120Ω wiper resistance, 12V tolerant | Higher wiper resistance increases insertion error; wider voltage tolerance (up to 12V) not needed for 5.5V systems | Prefer only if operating above 5.5V supply or requiring extended voltage margin beyond ISL95810UIRT8Z-T spec. |
Compared with AD5170BRMZ-2.5 and MCP45HV51-2.5M, the ISL95810UIRT8Z-T offers superior wiper resistance (70Ω vs. ≥45Ω), integrated hardware write protection, and optimized 2.5kΩ value for feedback networks - making it the most direct fit for industrial power and sensor signal conditioning where I²C compatibility and low-noise trimming are prioritized.
Availability
ISL95810UIRT8Z-T is available at Aetrix Electronics and suitable for industrial power supplies, sensor calibration modules, programmable gain amplifiers, and LED bias circuits requiring stable component supply and long-term obsolescence management.
Supply support for ISL95810UIRT8Z-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 family targets precision analog reconfiguration in space-constrained systems, emphasizing low-noise DCP performance, non-volatile memory reliability, and seamless integration with I²C-based host controllers.
FAQ
What is the default wiper position after power-up for the ISL95810UIRT8Z-T?
The ISL95810UIRT8Z-T powers up with its wiper set to mid-scale (0x80 = decimal 128) by loading the factory-programmed value from the non-volatile Initial Value Register (IVR) into the volatile Wiper Register (WR). This behavior is guaranteed across all units and occurs within 3 ms after VCC exceeds 1.8 V.
Does the ISL95810UIRT8Z-T support both potentiometer and rheostat configurations?
Yes, the ISL95810UIRT8Z-T supports both modes: as a 3-terminal potentiometer (RH–RW–RL) for voltage division, and as a 2-terminal rheostat (RW–RL or RW–RH) for variable resistance. Its internal architecture allows monotonic resistance changes in both configurations, with DNL ≤ –0.5 LSB in rheostat mode per datasheet Figure 8.
How does the WP pin function on the ISL95810UIRT8Z-T?
The WP (Write Protect) pin on the ISL95810UIRT8Z-T is active-low: when pulled LOW, it disables all I²C write operations to both volatile and non-volatile registers. The device ignores incoming data bytes and returns to standby mode - providing hardware-level safeguard against unintended wiper or IVR changes during normal operation.
What is the maximum I²C clock frequency supported by the ISL95810UIRT8Z-T?
The ISL95810UIRT8Z-T supports I²C standard-mode and fast-mode operation up to 400 kHz, as specified in the Serial Interface Specifications table (Page 4, FN8090 Rev.3.01). Timing parameters including tLOW (1300 ns), tHIGH (600 ns), and tSU:STA (600 ns) are fully characterized for reliable communication at this rate.
Is the ISL95810UIRT8Z-T RoHS-compliant and what package type does it use?
Yes, the ISL95810UIRT8Z-T is RoHS-compliant (Pb-free plus anneal) and uses an 8-lead 3×3 mm TDFN package (JEDEC L8.3x3A outline). The package features an exposed thermal pad for improved heat dissipation and is rated for moisture sensitivity level (MSL) 1 at peak reflow temperatures meeting IPC/JEDEC J-STD-020.
ISL95810UIRT8Z-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- XDCP™
- Package/Case:
- 8-WDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Taper:
- Linear
- Configuration:
- Potentiometer
- Number of Circuits:
- 1
- Number of Taps:
- 256
- Resistance (Ohms):
- 50k
- 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
ISL95810UIRT8Z-T FAQ
1.How can I place an order for ISL95810UIRT8Z-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL95810UIRT8Z-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 ISL95810UIRT8Z-T reliable?
The price and inventory of ISL95810UIRT8Z-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL95810UIRT8Z-T is usually 5 days.
3.What payment methods are accepted for ISL95810UIRT8Z-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL95810UIRT8Z-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL95810UIRT8Z-T?
ISL95810UIRT8Z-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL95810UIRT8Z-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 ISL95810UIRT8Z-T?
For technical support, including ISL95810UIRT8Z-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL95810UIRT8Z-T requirements.
6.How does Aetrix verify that ISL95810UIRT8Z-T is sourced from the original manufacturer or authorized distributors?
All ISL95810UIRT8Z-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 ISL95810UIRT8Z-T meets industry standards.
7.What is the process for return or replacement of ISL95810UIRT8Z-T?
All ISL95810UIRT8Z-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL95810UIRT8Z-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 ISL95810UIRT8Z-T part is unused and in its original packaging.
Return procedure for ISL95810UIRT8Z-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ISL95810UIRT8Z-T Tags
-
MCP4018T-103E/LT
Microchip Technology
-
MCP4018T-503E/LT
Microchip Technology
-
MCP4011T-103E/SN
Microchip Technology
-
MCP4018T-104E/LT
Microchip Technology
-
MCP4017T-503E/LT
Microchip Technology
-
MCP4018T-502E/LT
Microchip Technology
-
MCP4017T-103E/LT
Microchip Technology
-
MCP4531T-103E/MF
Microchip Technology
-
MCP4021T-202E/SN
Microchip Technology
-
MCP4023T-103E/CH
Microchip Technology
-
MCP4022T-503E/CH
Microchip Technology
-
MCP4551T-502E/MS
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
