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Renesas ISL90726UIE627Z-TK
- Part No.:
- ISL90726UIE627Z-TK
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
ISL90726UIE627Z-TK.pdf
- Description:
- IC DGTL POT 50KOHM 128TAP SC70-6
- Quantity:
- Payment:
- Shipping:
Inventory:3,070
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Product details
Overview
ISL90726UIE627Z-TK from Intersil is a volatile digitally controlled potentiometer (XDCP) with 128-tap resolution, 50kΩ total resistance, I²C interface, and SC-70-6 package. It replaces mechanical potentiometers in precision analog adjustment circuits requiring stable wiper positioning under digital control, such as LED biasing and sensor transducer calibration.
For engineers reviewing the ISL90726UIE627Z-TK datasheet, ISL90726UIE627Z-TK pinout, ISL90726UIE627Z-TK application, or ISL90726UIE627Z-TK equivalent, key selection criteria include its 50kΩ RTOTAL, ±45 ppm/°C rheostat tempco, 70Ω typical wiper resistance at 3.3V, 200µA max active current, and guaranteed operation from –40°C to +85°C.
Technical Context
The ISL90726UIE627Z-TK implements a 127-element resistor array with CMOS wiper switches controlled by a 7-bit volatile wiper register (WR), enabling monotonic 128-position adjustment between RL and RH terminals. RH is internally connected but not brought out to a pin; only RL and RW are accessible.
It operates as an I²C slave device with open-drain SDA/SCL pins compliant to 400kHz standard-mode timing, supporting volatile write/read of the wiper register via a fixed 7-bit slave address (0x5E). Power-on defaults the WR to 0x40 (midscale), and no non-volatile storage is present.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RTOTAL | 50kΩ - Total end-to-end resistance between RL and RH; defines full-scale analog range for gain/offset tuning. |
| Wiper Resolution | 128 taps - Enables 7.8 mV/V step resolution in 5V divider applications; supports fine-grained analog trimming. |
| Wiper Resistance | 70Ω typ at VCC = 3.3V - Low on-resistance minimizes signal path error in rheostat mode and improves linearity. |
| Tempco (Rheostat) | ±45 ppm/°C typical - Ensures <0.4% resistance drift over –40°C to +85°C, critical for temperature-stable sensor biasing. |
| VCC Range | 2.7V to 5.5V - Compatible with 3.3V and 5V logic/system rails without level-shifting. |
| I²C Clock Frequency | Up to 400kHz - Enables fast wiper updates (<3ms power-up delay, 500ns wiper response time) in dynamic margining applications. |
| Supply Current | 200µA max active, 500nA max standby - Supports low-power embedded systems and battery-backed configurations. |
Pinout & Package
Package: 6-lead SC-70 (Pb-free, RoHS-compliant), footprint compatible with JEDEC MO203AB and EIAJ SC70 standards; dimensions: 2.15mm × 1.35mm × 0.9mm (max height).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VDD | Positive supply rail | Accepts 2.7V–5.5V; powers internal logic and resistor array; decoupling capacitor required near pin. |
| 2 - GND | Ground reference | Analog and digital ground common point; must be low-impedance return path for DCP current. |
| 3 - SCL | I²C clock input | Open-drain, requires external pull-up; synchronizes all data transfers; max 400kHz frequency. |
| 4 - SDA | I²C bidirectional data | Open-drain, requires external pull-up; carries address, command, and wiper register data. |
| 5 - RW | Wiper terminal | Connects to intermediate node of resistor ladder; output of adjustable voltage divider or variable resistance path. |
| 6 - RL | Low-end terminal | Fixed end of potentiometer; used with RW in rheostat mode or with RH (internal) in divider mode. |
Key Features
| Feature | Design Value |
|---|---|
| Volatile 128-tap XDCP | Enables rapid digital reconfiguration without non-volatile write latency; ideal for runtime calibration and DDR3 margining. |
| I²C serial interface | Reduces board space vs. parallel control; eliminates need for dedicated GPIOs or DAC peripherals in microcontroller designs. |
| 50kΩ RTOTAL with ±20% tolerance | Provides predictable impedance scaling for gain-setting networks while accommodating process variation in production. |
| Power-on preset to midscale (0x40) | Ensures known default analog state at startup-critical for safe initialization in LED drivers and sensor front-ends. |
| Low 500nA standby current | Permits integration into always-on subsystems (e.g., sensor monitoring) without compromising system-level power budget. |
Applications
| LCD Brightness Control | Laser Diode Biasing |
|---|---|
|
Use Scenario: Adjusting backlight intensity in portable displays using analog voltage feedback to LED driver ICs. IC Role / Device Role / Timing Role: Digitally programmable voltage divider setting reference voltage for constant-current LED sink. Use Value: Replaces manual trimmer with factory-programmable or firmware-adjustable brightness levels; eliminates post-manufacture calibration labor. |
Use Scenario: Setting precise bias current for edge-emitting laser diodes in optical transceivers. IC Role / Device Role / Timing Role: Rheostat-mode current-limiting element in laser driver feedback loop. Use Value: Enables closed-loop thermal compensation via MCU-controlled wiper updates, maintaining stable optical output across temperature. |
| Sensor Transducer Calibration | DDR3 Memory Margining |
|
Use Scenario: Fine-tuning offset/gain of pressure or temperature sensor signal conditioning amplifiers during production test. IC Role / Device Role / Timing Role: Precision adjustable resistor in instrumentation amplifier feedback network. Use Value: Achieves <0.1% calibration accuracy with 128-step resolution and low tempco, reducing test time vs. discrete resistor arrays. |
Use Scenario: Dynamically varying VREF or termination voltage during DDR3 memory compliance testing. IC Role / Device Role / Timing Role: Fast-response voltage divider generating programmable reference for memory controller I/O buffers. Use Value: Supports automated margining sweeps at 400kHz I²C rate, enabling full 128-point VREF sweep in <320ms without FPGA logic. |
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 | Non-volatile EEPROM storage; 256-tap resolution; SPI interface; 50kΩ RTOTAL; higher 1.5µA standby current. | Supports power-loss retention of last wiper position; unsuitable where volatile reset-on-power-up is required. | Select when persistent wiper state is mandatory; avoid if midscale power-on default is required per ISL90726UIE627Z-TK behavior. |
| MCP45HV51-503E/MS | Volatile; 256-tap; I²C-compatible; 50kΩ RTOTAL; 10V tolerant DCP pins; 1.5mA max active current. | Supports higher-voltage analog rails (up to 10V); consumes >7× more active current than ISL90726UIE627Z-TK. | Select for high-voltage sensor interfaces; avoid in low-power or 3.3V-only systems where ISL90726UIE627Z-TK's 200µA active current is critical. |
Compared with AD5175BRMZ-50 and MCP45HV51-503E/MS, the ISL90726UIE627Z-TK offers lowest active and standby current, guaranteed midscale power-on state, and optimized 128-tap resolution for cost-sensitive trimming-making it preferred for battery-powered sensor nodes and DDR3 test fixtures requiring deterministic startup behavior.
Availability
ISL90726UIE627Z-TK is available at Aetrix Electronics and suitable for LCD brightness control, laser diode biasing, sensor calibration, DDR3 margining, and transducer adjustment requiring stable component supply across industrial temperature ranges.
Supply support for ISL90726UIE627Z-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) is a U.S.-based analog and mixed-signal semiconductor company focused on power management, precision analog, and interface solutions.
The ISL90726UIE627Z-TK belongs to Intersil's XDCP™ family of digitally controlled potentiometers, designed specifically for replacing mechanical trimmers in high-reliability, space-constrained analog tuning applications across industrial, computing, and communications equipment.
FAQ
What is the total resistance value and tolerance of the ISL90726UIE627Z-TK?
The ISL90726UIE627Z-TK has a nominal total resistance (RTOTAL) of 50kΩ with a tolerance of ±20% over temperature and process variation. This value is specified in the Ordering Information table and confirmed in the Analog Specifications section of the FN8244 datasheet. The 50kΩ rating applies strictly to the U-version variant, distinguishing it from the 10kΩ W-version (ISL90726WIE627Z-TK).
Does the ISL90726UIE627Z-TK retain its wiper position after power cycling?
No, the ISL90726UIE627Z-TK is a volatile digitally controlled potentiometer. Its 7-bit wiper register resets to 0x40 (midscale) on every power-up, as stated in the Principles of Operation section. It contains no EEPROM or non-volatile memory, so wiper position must be reprogrammed via I²C after each power cycle.
What are the absolute maximum voltage ratings for the DCP terminals of the ISL90726UIE627Z-TK?
The absolute maximum voltage at any DCP terminal (RW or RL) is –0.3V to VCC, per the Absolute Maximum Ratings table. Exceeding this range risks latch-up or permanent damage. The device does not support rail-to-rail analog operation beyond the supply rails, and RH is not externally accessible.
Can the ISL90726UIE627Z-TK operate from a 2.5V supply?
No, the ISL90726UIE627Z-TK requires a minimum VCC of 2.7V, as defined in the Recommended Operating Conditions table. Operation below 2.7V violates specification and may result in unreliable I²C communication, incomplete wiper register updates, or undefined analog performance.
What is the I²C slave address of the ISL90726UIE627Z-TK?
The ISL90726UIE627Z-TK uses a fixed 7-bit I²C slave address of 0x5E (101110x), where the LSB is the R/W bit. This is explicitly defined in Table 1 (Identification Byte Format) and verified in the I²C Serial Interface section of the FN8244 datasheet. No address pins or hardware configuration options exist.
ISL90726UIE627Z-TK Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- XDCP™
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- 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:
- Volatile
- Voltage - Supply:
- 2.7V ~ 5.5V
- Features:
- -
- Tolerance:
- ±20%
- Temperature Coefficient (Typ):
- ±45ppm/°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- SC-70-6
- Operating Temperature:
- -40°C ~ 85°C
- Resistance - Wiper (Ohms) (Typ):
- 85
ISL90726UIE627Z-TK FAQ
1.How can I place an order for ISL90726UIE627Z-TK through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL90726UIE627Z-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 ISL90726UIE627Z-TK reliable?
The price and inventory of ISL90726UIE627Z-TK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL90726UIE627Z-TK is usually 5 days.
3.What payment methods are accepted for ISL90726UIE627Z-TK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL90726UIE627Z-TK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL90726UIE627Z-TK?
ISL90726UIE627Z-TK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL90726UIE627Z-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 ISL90726UIE627Z-TK?
For technical support, including ISL90726UIE627Z-TK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL90726UIE627Z-TK requirements.
6.How does Aetrix verify that ISL90726UIE627Z-TK is sourced from the original manufacturer or authorized distributors?
All ISL90726UIE627Z-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 ISL90726UIE627Z-TK meets industry standards.
7.What is the process for return or replacement of ISL90726UIE627Z-TK?
All ISL90726UIE627Z-TK units undergo pre-shipment inspection (PSI). If there is an issue with ISL90726UIE627Z-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 ISL90726UIE627Z-TK part is unused and in its original packaging.
Return procedure for ISL90726UIE627Z-TK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ISL90726UIE627Z-TK Tags
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MCP4018T-103E/LT
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MCP4011T-103E/SN
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MCP4023T-103E/CH
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