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Renesas ISL22313TFU10Z
- Part No.:
- ISL22313TFU10Z
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
ISL22313TFU10Z.pdf
- Description:
- IC DGT POT 100KOHM 256TAP 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,381
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Product details
Overview
ISL22313TFU10Z from Renesas (formerly Intersil) is a single-channel, 256-tap digitally controlled potentiometer (XDCP™) with I²C interface, 100 kΩ end-to-end resistance, dual supply operation (VCC = +2.25V to +5.5V, V− = −2.25V to −5.5V), and extended industrial temperature range (−40°C to +125°C), used for precision analog trimming in bipolar signal conditioning circuits.
For engineers reviewing the ISL22313TFU10Z datasheet, ISL22313TFU10Z pinout, ISL22313TFU10Z application, or ISL22313TFU10Z equivalent, key selection considerations include its non-volatile wiper position storage, 70 Ω typical wiper resistance, ±3.0 mA max wiper current, shutdown mode capability, and 10-lead MSOP package compatibility with high-reliability industrial control and sensor front-end designs.
Technical Context
The ISL22313TFU10Z implements a monolithic CMOS resistor ladder with CMOS switch matrix and integrated I²C slave logic, supporting both voltage divider and rheostat configurations. Its volatile Wiper Register (WR) and non-volatile Initial Value Register (IVR) enable power-up recall of user-defined settings without external memory.
Dual-supply architecture allows DCP terminal voltage swing from V− to VCC, enabling true bipolar operation across the full 100 kΩ resistance range. The device features "make-before-break" switching, 14 general-purpose non-volatile registers, and EEPROM endurance of 1 million cycles with 50-year data retention at ≤+55°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Total Resistance | 100 kΩ - fixed end-to-end resistance option for precise gain/offset calibration in high-impedance feedback paths. |
| Taps / Resolution | 256 taps - 8-bit resolution enabling 0.39% step granularity for fine analog adjustment. |
| Wiper Resistance | 70 Ω typical @ 1 mA - low on-resistance minimizes signal path error in precision voltage divider applications. |
| Supply Range | VCC = +2.25V to +5.5V; V− = −2.25V to −5.5V - supports bipolar rail-to-rail analog signal handling without level-shifting circuitry. |
| Temperature Range | −40°C to +125°C - qualified for under-hood automotive, industrial motor drives, and harsh-environment sensor interfaces. |
| Standby Current | <2.5 µA max @ +125°C - enables ultra-low-power operation in battery-backed or energy-constrained systems. |
| I²C Address Pins | A0, A1 - supports up to four devices on same bus via hardware-configurable 7-bit slave address. |
Pinout & Package
ISL22313TFU10Z is housed in a RoHS-compliant, Pb-free 10-lead MSOP (M10.118) package with exposed pad (not electrically connected). Thermal resistance θJA = 120°C/W enables stable operation at full temperature range without forced airflow.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SCL | I²C clock input | Open-drain input requiring external pull-up; defines timing for all serial transactions including wiper register writes and non-volatile memory access. |
| 2 SDA | I²C bidirectional data line | Open-drain I/O; carries identification byte, address byte, and data bytes; supports multi-master arbitration and ACK/NACK handshaking. |
| 3 A1 | I²C address bit 1 | Hardwired logic input setting LSB of 7-bit slave address; enables up to four ISL22313 devices per I²C bus segment. |
| 4 A0 | I²C address bit 0 | Hardwired logic input setting LSB of 7-bit slave address; combined with A1, selects one of four unique device addresses. |
| 5 V− | Negative supply rail | Provides lower voltage reference for bipolar DCP operation; supports −2.25V to −5.5V; sinks standby/shutdown current. |
| 6 GND | Digital ground reference | Common return for I²C interface and control logic; must be isolated from analog ground in mixed-signal layouts to avoid noise coupling. |
| 7 RL | DCP low terminal | Fixed end of resistor ladder; connects to V− in bipolar voltage divider mode; serves as one terminal in rheostat configuration. |
| 8 RW | DCP wiper terminal | Movable contact point controlled by WR register; delivers tapped voltage or variable resistance; max ±3.0 mA continuous current rating. |
| 9 RH | DCP high terminal | Fixed end of resistor ladder; connects to VCC in voltage divider mode; serves as second terminal in rheostat configuration. |
| 10 VCC | Positive supply rail | Provides upper voltage reference and powers digital interface; supports +2.25V to +5.5V; sources standby/shutdown current. |
Key Features
| Feature | Design Value |
|---|---|
| Non-volatile wiper position storage | IVR retains last-set wiper value across power cycles; recalled automatically at power-on, eliminating boot-time calibration routines. |
| 14 GP non-volatile registers | Supports lookup tables for multi-point calibration, factory-trimmed coefficients, or system-specific configuration data without external EEPROM. |
| Shutdown mode (SHDN bit) | ACR[6] disables DCP output: RW shorts to RL and RH–RL path opens, reducing leakage and isolating downstream circuitry during sleep. |
| Make-before-break switching | Prevents open-circuit glitches during tap transitions, ensuring monotonic resistance change and avoiding signal discontinuities in feedback loops. |
| Bipolar DCP terminal voltage range | DCP pins operate from V− to VCC - enables direct interfacing with op-amps driven from split supplies without clamping diodes or level shifters. |
Applications
| Industrial Sensor Signal Conditioning | Programmable Gain Amplifier Calibration |
|---|---|
|
Use Scenario: High-accuracy RTD or thermocouple front-end with offset/gain trim across temperature extremes. IC Role / Device Role / Timing Role: Digitally adjustable voltage divider sets reference voltage and feedback ratio for instrumentation amplifier and ADC driver stages. Use Value: 100 kΩ resistance and ±50 ppm/°C end-to-end tempco ensure stable gain/offset over −40°C to +125°C; non-volatile IVR preserves factory calibration. |
Use Scenario: Closed-loop programmable gain stage in motor control feedback or power supply monitoring. IC Role / Device Role / Timing Role: Rheostat-mode ISL22313TFU10Z adjusts feedback network resistance to set closed-loop gain dynamically via I²C. Use Value: 70 Ω wiper resistance and 256-step resolution enable <0.4% gain step accuracy; shutdown mode disconnects gain path during fault conditions. |
| Bipolar Audio Line Driver Trim | Automotive Battery Management System Calibration |
|
Use Scenario: Precision DC bias and AC gain adjustment in Class-AB audio line drivers operating from ±5V rails. IC Role / Device Role / Timing Role: Voltage divider configuration provides symmetrical positive/negative bias voltage for differential output stages. Use Value: Dual-supply support (V− = −5.5V, VCC = +5.5V) enables rail-to-rail wiper swing; 1.5 µs wiper response ensures glitch-free transitions during volume changes. |
Use Scenario: Cell voltage reference trimming and shunt calibration in high-side current sensing for 12V/48V BMS modules. IC Role / Device Role / Timing Role: Rheostat-mode ISL22313TFU10Z sets gain of current-sense amplifier; IVR stores calibrated values per production unit. Use Value: −40°C to +125°C rating matches under-hood thermal requirements; 1M-cycle EEPROM endurance supports lifetime recalibration in field. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digitally controlled potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL22313UFU10Z | 50 kΩ total resistance (vs. 100 kΩ); identical pinout, I²C interface, and temperature range. | Better suited for lower-impedance feedback networks where 50 kΩ reduces thermal noise and improves bandwidth. | Select when circuit analysis confirms 50 kΩ meets stability and noise targets; no PCB changes required. |
| AD5170BRMZ-100 | Analog Devices part with 100 kΩ resistance, I²C interface, but only 125°C max junction temperature and no V− supply pin. | Lacks bipolar supply capability; requires level-shifting for negative rail operation; lower reliability margin in extended-temp environments. | Use only in unipolar applications with ambient ≤+125°C; verify thermal derating and signal swing constraints before substitution. |
Compared with ISL22313UFU10Z, the ISL22313TFU10Z offers higher resistance for reduced current draw and improved noise immunity in high-Z nodes; compared with AD5170BRMZ-100, it delivers true bipolar operation and extended +125°C ambient rating critical for automotive and industrial deployments.
Availability
ISL22313TFU10Z is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, programmable gain amplifier calibration, bipolar audio line driver trim, and automotive battery management system calibration requiring stable component supply across extended temperature ranges.
Supply support for ISL22313TFU10Z 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 acquired Intersil in 2017 and maintains full technical and manufacturing continuity for legacy Intersil precision analog products.
The ISL22313TFU10Z belongs to the XDCP™ (eXternally Digitally Controlled Potentiometer) family, designed specifically for replacing mechanical potentiometers in high-reliability, programmable analog signal-path applications requiring non-volatile setting retention and I²C configurability.
FAQ
What is the total resistance value of the ISL22313TFU10Z?
The ISL22313TFU10Z has a fixed total resistance of 100 kΩ between RH and RL terminals. This value is confirmed in the Ordering Information table and Analog Specifications section of the FN6421 datasheet. It is not user-programmable and remains stable across temperature (±20% tolerance, ±50 ppm/°C tempco for U/T options).
Does the ISL22313TFU10Z support bipolar supply operation?
Yes, the ISL22313TFU10Z supports true bipolar operation with independent VCC (+2.25V to +5.5V) and V− (−2.25V to −5.5V) supplies. This allows the DCP terminals (RH, RW, RL) to swing from V− to VCC, enabling direct use in split-rail op-amp circuits without external level-shifting components.
How does the non-volatile memory function in the ISL22313TFU10Z?
The ISL22313TFU10Z contains an 8-bit non-volatile Initial Value Register (IVR) that stores the default wiper position. At power-up, the IVR contents are automatically loaded into the volatile Wiper Register (WR). IVR can be written via I²C using the Access Control Register (ACR) VOL bit, and retains data for 50 years at ≤+55°C.
What is the maximum wiper current rating for the ISL22313TFU10Z?
The ISL22313TFU10Z specifies a maximum wiper current (IW) of ±3.0 mA under recommended operating conditions. Exceeding this limit risks increased wiper resistance drift or long-term reliability degradation. Derating is advised for continuous operation near the absolute maximum rating.
Is the ISL22313TFU10Z still in active production?
The ISL22313TFU10Z is marked "No longer available" in the official Renesas ordering information, with ISL22313UFU10Z listed as the recommended replacement. However, Aetrix Electronics maintains legacy inventory and offers lifecycle support, including obsolescence mitigation planning and cross-reference assistance for design continuity.
ISL22313TFU10Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- XDCP™
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Taper:
- Linear
- Configuration:
- Potentiometer
- Number of Circuits:
- 1
- Number of Taps:
- 256
- Resistance (Ohms):
- 100k
- Interface:
- I2C
- Memory Type:
- Non-Volatile
- Voltage - Supply:
- 2.25V ~ 5.5V
- Features:
- Selectable Address
- Tolerance:
- ±20%
- Temperature Coefficient (Typ):
- ±50ppm/°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 10-MSOP
- Operating Temperature:
- -40°C ~ 125°C
- Resistance - Wiper (Ohms) (Typ):
- 70
ISL22313TFU10Z FAQ
1.How can I place an order for ISL22313TFU10Z through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL22313TFU10Z 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 ISL22313TFU10Z reliable?
The price and inventory of ISL22313TFU10Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL22313TFU10Z is usually 5 days.
3.What payment methods are accepted for ISL22313TFU10Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL22313TFU10Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL22313TFU10Z?
ISL22313TFU10Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL22313TFU10Z 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 ISL22313TFU10Z?
For technical support, including ISL22313TFU10Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL22313TFU10Z requirements.
6.How does Aetrix verify that ISL22313TFU10Z is sourced from the original manufacturer or authorized distributors?
All ISL22313TFU10Z 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 ISL22313TFU10Z meets industry standards.
7.What is the process for return or replacement of ISL22313TFU10Z?
All ISL22313TFU10Z units undergo pre-shipment inspection (PSI). If there is an issue with ISL22313TFU10Z, 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 ISL22313TFU10Z part is unused and in its original packaging.
Return procedure for ISL22313TFU10Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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