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Renesas ISL22323WFV14Z-TK
- Part No.:
- ISL22323WFV14Z-TK
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
ISL22323WFV14Z-TK.pdf
- Description:
- IC DGT POT 10KOHM 256TAP 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,384
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Product details
Overview
ISL22323WFV14Z-TK from Renesas Electronics (formerly Intersil) is a dual digitally controlled potentiometer (XDCP) with 256-tap resolution, I²C interface, and 10kΩ end-to-end resistance per channel. It operates from dual supplies (VCC = 2.25–5.5V, V− = −2.25 to −5.5V), supports −40°C to +125°C operation, and features non-volatile wiper position storage for power-up recall-used in precision biasing, gain control, and offset trimming circuits.
For engineers reviewing the ISL22323WFV14Z-TK datasheet, ISL22323WFV14Z-TK pinout, ISL22323WFV14Z-TK application, or ISL22323WFV14Z-TK equivalent, this page delivers verified specifications, validated pin functions, confirmed dual-supply analog performance, and real-world use cases in industrial signal conditioning and bipolar amplifier calibration.
Technical Context
The ISL22323WFV14Z-TK integrates two independent 256-tap DCPs implemented via resistor ladders and CMOS switches with "make-before-break" switching. Each channel includes volatile Wiper Registers (WR0/WR1) and non-volatile Initial Value Registers (IVR0/IVR1), enabling persistent wiper state retention across power cycles.
It uses an I²C-compatible serial interface with three address pins (A0–A2), supporting up to eight devices on one bus. The device implements dual supply rails (VCC and V−) to enable true bipolar terminal voltage swing (V− to VCC), critical for applications requiring symmetric analog range around ground.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Total Resistance | 10kΩ per DCP channel - sets full-scale voltage divider ratio and rheostat impedance range. |
| Taps per Channel | 256 linear steps - provides 0.39% resolution per step in voltage divider mode. |
| Supply Range | VCC = 2.25–5.5V; V− = −2.25 to −5.5V - enables ±5.5V bipolar operation without external level shifters. |
| Wiper Resistance | 70Ω typical at 1mA - minimizes loading error in high-impedance feedback paths. |
| INL (Voltage Mode) | ±0.5 LSB max (W option) - ensures monotonicity and <0.2% absolute linearity error over full tap range. |
| Temperature Range | −40°C to +125°C - qualified for under-hood automotive, industrial PLC, and motor drive environments. |
| Non-volatile Endurance | 1,000,000 write cycles - supports field recalibration and adaptive tuning over product lifetime. |
Pinout & Package
ISL22323WFV14Z-TK is housed in a 14-lead TSSOP package (RoHS-compliant, M14.173 drawing), with exposed pad internally connected to V−. Pin functions are electrically validated per FN6422 Rev.2.00.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| RH0 | High terminal of DCP0 | Fixed end of first potentiometer ladder; referenced to V− or VCC depending on configuration. |
| RL0 | Low terminal of DCP0 | Fixed end opposite RH0; used as ground reference or negative rail connection in bipolar setups. |
| RW0 | Wiper terminal of DCP0 | Adjustable output node; position set by WR0 register; connects to amplifier feedback or bias network. |
| RH1 | High terminal of DCP1 | Independent second potentiometer high terminal; enables dual-channel calibration (e.g., gain + offset). |
| RL1 | Low terminal of DCP1 | Second potentiometer low terminal; may be tied to same rail as RL0 or independently biased. |
| RW1 | Wiper terminal of DCP1 | Second adjustable node; synchronized or independent control via separate WR1 register. |
| A2/A1/A0 | I²C slave address inputs | Set 3 LSBs of 7-bit I²C address; allow up to eight ISL22323 devices on shared bus. |
| SDA | I²C bidirectional data line | Open-drain; requires external pull-up; carries address, command, and data bytes per I²C protocol. |
| SCL | I²C clock input | Master-generated clock; timing compliant with 400kHz Fast Mode; defines data sampling edges. |
| VCC | Positive supply rail | Powers logic and analog circuitry; must be ≥2.25V for reliable EEPROM recall and register access. |
| V− | Negative supply rail | Bias rail for DCP terminals; enables true bipolar operation; internally connects to EPAD. |
| GND | Digital ground reference | Logic ground reference; separate from analog return paths in mixed-signal PCB layout. |
Key Features
| Feature | Design Value |
|---|---|
| Dual 256-tap DCPs in single package | Reduces board space vs. discrete pots or dual single-channel ICs; enables matched channel tracking (VMATCH ≤ ±2 LSB). |
| Non-volatile wiper storage (IVR0/IVR1) | Eliminates need for external microcontroller initialization at power-on; wipers auto-restore to last calibrated position. |
| 13 general-purpose NV registers | Stores calibration coefficients, lookup tables, or system IDs; survives >50 years at ≤+55°C ambient. |
| Standby current <4µA | Enables always-on bias networks in battery-backed instrumentation without significant drain. |
| ±85ppm/°C end-to-end tempco (W option) | Stable resistance over temperature; suitable for precision sensor front-ends where drift must be minimized. |
| Shut-down mode with <4µA current | Hardware-controlled disable (via ACR[6]) isolates DCPs from circuit; prevents leakage during sleep states. |
Applications
| Instrumentation Offset Calibration | Programmable Gain Amplifier Tuning |
|---|---|
|
Use Scenario: Calibrating zero-error in high-precision ADC driver stages using dual-opamp topology with differential input. IC Role / Device Role / Timing Role: ISL22323WFV14Z-TK provides matched, non-volatile offset adjustment on both positive and negative input paths via RH0/RL0/RW0 and RH1/RL1/RW1. Use Value: Eliminates manual trimmer replacement; maintains calibration across thermal cycles and power cycles without host intervention. |
Use Scenario: Setting closed-loop gain in programmable transimpedance amplifiers for optical sensor interfaces. IC Role / Device Role / Timing Role: ISL22323WFV14Z-TK acts as digitally programmable feedback resistor (rheostat mode between RW0 and RL0), directly controlling gain magnitude. Use Value: Enables dynamic gain switching via I²C in real time; avoids gain errors from mechanical pot wear or solder joint drift. |
| Bipolar Signal Conditioning | Industrial Temperature Sensor Linearization |
|
Use Scenario: Biasing rail-to-rail op-amps operating from ±5V supplies in motor control feedback loops. IC Role / Device Role / Timing Role: ISL22323WFV14Z-TK supplies symmetric, digitally adjustable common-mode voltage to amplifier inputs using dual-supply capability (V− to VCC). Use Value: Maintains amplifier headroom across temperature; avoids clipping due to thermal drift of passive bias networks. |
Use Scenario: Compensating nonlinearity in RTD or thermistor bridges within PLC analog input modules. IC Role / Device Role / Timing Role: ISL22323WFV14Z-TK implements piecewise-linear correction by storing multi-point calibration values in its 13 GP NV registers and adjusting DCP taps accordingly. Use Value: Achieves <±0.1°C accuracy over −40°C to +125°C without external DAC or MCU-based compensation. |
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-10 | Single-channel, 256-tap, 10kΩ; SPI interface; no dual supply support (VSS = GND only); 10-lead MSOP. | Lacks bipolar rail capability; unsuitable for circuits requiring V− < 0V; requires SPI host instead of I²C. | Choose when board space is constrained and only one DCP channel is needed with SPI infrastructure already present. |
| MCP45HV51-103E/MS | Dual-channel, 256-tap, 10kΩ; I²C interface; supports VDD = 2.7–5.5V, but no negative rail - VSS = GND only. | No V− pin; cannot replicate true bipolar terminal voltage swing; limited to unipolar or ground-referenced topologies. | Select for cost-sensitive, ground-referenced biasing where dual-supply operation is unnecessary. |
Compared with AD5170BRMZ-10 and MCP45HV51-103E/MS, the ISL22323WFV14Z-TK uniquely supports dual-rail operation (V− to VCC), enabling direct integration into bipolar amplifier stages without level-shifting circuitry-critical for precision analog systems where rail symmetry and thermal matching matter.
Availability
ISL22323WFV14Z-TK is available at Aetrix Electronics and suitable for industrial sensor calibration, motor control biasing, and programmable analog front-ends requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for ISL22323WFV14Z-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
Renesas Electronics acquired Intersil in 2017 and continues to support legacy precision analog products including the ISL22323 family. Renesas is a global semiconductor leader focused on microcontrollers, analog, power, and connectivity solutions.
The ISL22323 series was designed specifically for digitally programmable analog trimming in harsh-environment applications-emphasizing non-volatile memory reliability, wide temperature operation, and true bipolar supply compatibility.
FAQ
What is the resistance tolerance and temperature coefficient of the ISL22323WFV14Z-TK?
The ISL22323WFV14Z-TK has a total resistance tolerance of ±20% and an end-to-end temperature coefficient of ±85ppm/°C (W option). These values are specified over −40°C to +125°C and ensure predictable drift behavior in precision analog circuits where thermal stability is critical. The ISL22323WFV14Z-TK's ratiometric tempco (TCV) is ±4ppm/°C, further enhancing voltage-divider accuracy across temperature.
Does the ISL22323WFV14Z-TK support true bipolar operation, and how is it implemented?
Yes, the ISL22323WFV14Z-TK supports true bipolar operation via dedicated V− and VCC pins, allowing DCP terminals (RHx, RLx) to swing from V− to VCC. This enables direct use in ±5V or ±3.3V amplifier bias networks without external level shifters. The exposed pad is internally connected to V−, and PCB thermal land should be tied to the V− plane per TB389 guidelines.
How does non-volatile wiper recall work on the ISL22323WFV14Z-TK at power-up?
At power-up, the ISL22323WFV14Z-TK automatically recalls the contents of its non-volatile Initial Value Registers (IVR0/IVR1) into the corresponding volatile Wiper Registers (WR0/WR1), setting both wipers to their last-saved positions. Recall occurs once VCC exceeds 1.9V (typical), with full initialization completed within 5ms. This eliminates boot-time calibration routines in host firmware.
Can the ISL22323WFV14Z-TK be used in rheostat mode, and what are the key specs in that configuration?
Yes, the ISL22323WFV14Z-TK supports rheostat mode (two-terminal variable resistor) by connecting either RHx or RLx to a fixed potential and using RWx as the adjustable node. In this mode, integral non-linearity is ±1.5 MI (W option), offset error is 0–5 MI, and resistance tempco remains ±40ppm/°C - making it suitable for programmable current-limiting or gain-setting applications.
What I²C address options are available for the ISL22323WFV14Z-TK, and how are they configured?
The ISL22323WFV14Z-TK uses pins A2, A1, and A0 to configure the three least-significant bits of its 7-bit I²C slave address. With all address pins grounded, the base address is 0x2C (for write) or 0x2D (for read). This allows up to eight devices on the same I²C bus. Address decoding is performed internally; no external pull-ups or jumpers are required beyond standard I²C bus termination.
ISL22323WFV14Z-TK Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- XDCP™
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Taper:
- Linear
- Configuration:
- Potentiometer
- Number of Circuits:
- 2
- Number of Taps:
- 256
- Resistance (Ohms):
- 10k
- Interface:
- I2C
- Memory Type:
- Non-Volatile
- Voltage - Supply:
- ±2.25V ~ 5.5V
- Features:
- Selectable Address
- Tolerance:
- ±20%
- Temperature Coefficient (Typ):
- ±85ppm/°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 14-TSSOP
- Operating Temperature:
- -40°C ~ 125°C
- Resistance - Wiper (Ohms) (Typ):
- 70
ISL22323WFV14Z-TK FAQ
1.How can I place an order for ISL22323WFV14Z-TK through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL22323WFV14Z-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 ISL22323WFV14Z-TK reliable?
The price and inventory of ISL22323WFV14Z-TK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL22323WFV14Z-TK is usually 5 days.
3.What payment methods are accepted for ISL22323WFV14Z-TK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL22323WFV14Z-TK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL22323WFV14Z-TK?
ISL22323WFV14Z-TK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL22323WFV14Z-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 ISL22323WFV14Z-TK?
For technical support, including ISL22323WFV14Z-TK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL22323WFV14Z-TK requirements.
6.How does Aetrix verify that ISL22323WFV14Z-TK is sourced from the original manufacturer or authorized distributors?
All ISL22323WFV14Z-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 ISL22323WFV14Z-TK meets industry standards.
7.What is the process for return or replacement of ISL22323WFV14Z-TK?
All ISL22323WFV14Z-TK units undergo pre-shipment inspection (PSI). If there is an issue with ISL22323WFV14Z-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 ISL22323WFV14Z-TK part is unused and in its original packaging.
Return procedure for ISL22323WFV14Z-TK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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