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Renesas ISL23325WFVZ
- Part No.:
- ISL23325WFVZ
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
ISL23325WFVZ.pdf
- Description:
- IC DGT POT 10KOHM 256TAP 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,432
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Product details
Overview
ISL23325WFVZ from Renesas Electronics (formerly Intersil) is a volatile dual digitally controlled potentiometer (DCP) with I²C interface, 10kΩ total resistance per channel, 256-tap resolution, and operation from 1.7V to 5.5V VCC and 1.2V to 5.5V VLOGIC. It delivers ±0.5 LSB integral nonlinearity in voltage divider mode and supports battery-powered sensor trimming and power supply margining.
For engineers reviewing the ISL23325WFVZ datasheet, ISL23325WFVZ pinout, ISL23325WFVZ application, or ISL23325WFVZ equivalent, key selection criteria include its 10kΩ resistance option, 14-lead TSSOP package, -40°C to +125°C extended temperature range, shutdown mode with end-to-end open circuit, and wiper resistance of 70Ω typical at 3.3V.
Technical Context
The ISL23325WFVZ integrates two independent DCP cores on a monolithic CMOS IC, each with an 8-bit volatile wiper register (WR0/WR1) directly accessible via I²C. Wiper positioning uses make-before-break CMOS switches across a resistor ladder, ensuring monotonicity and glitch-free transitions.
Its dual-rail architecture separates analog power (VCC) from logic power (VLOGIC), enabling direct interfacing with 1.2V microcontrollers without level shifters. The device powers up to mid-scale (128) and supports shutdown mode that disconnects DCP resistors while preserving wiper register contents.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Total Resistance | 10kΩ per DCP channel - sets gain/attenuation range and current limits in adjustable bias or feedback networks |
| Taps per Channel | 256 - enables 0.39% resolution for fine analog tuning in closed-loop systems |
| VCC Range | 1.7V to 5.5V - supports single-supply operation across Li-ion, 3.3V, and 5V systems |
| VLOGIC Range | 1.2V to 5.5V - allows direct connection to low-voltage I²C masters without external level translation |
| Wiper Resistance | 70Ω typical at VCC = 3.3V - minimizes loading error in high-impedance voltage divider configurations |
| INL (Voltage Mode) | ±0.5 LSB - ensures accurate linear voltage division over full tap range for precision calibration |
| Shutdown Current | 1.2µA at VCC/VLOGIC = 1.7V/1.2V - reduces system standby power in always-on instrumentation |
Pinout & Package
ISL23325WFVZ is packaged in a RoHS-compliant 14-lead TSSOP (M14.173), 5.0mm × 4.4mm × 1.2mm body, with exposed pad not electrically connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND | Ground reference | Common return path for analog and digital sections; must be low-impedance for noise-sensitive DCP operation |
| VLOGIC | I²C logic supply | Powers internal level shifter; sets SDA/SCL input thresholds and output drive strength independently of VCC |
| SDA | I²C bidirectional data | Open-drain interface requiring external pull-up; transmits wiper register reads and receives write commands |
| SCL | I²C clock input | Master-generated timing signal; synchronizes all register access and wiper updates |
| A0–A2 | Slave address inputs | Hardwired binary address bits allowing up to eight ISL23325 devices on one I²C bus |
| RL0, RW0, RH0 | DCP0 terminals | Low/wiper/high connections for first potentiometer; configured as 3-terminal pot or 2-terminal rheostat |
| RL1, RW1, RH1 | DCP1 terminals | Low/wiper/high connections for second potentiometer; fully independent of DCP0 |
| VCC | Analog supply | Provides operating voltage for resistor ladder and CMOS switches; defines maximum DCP terminal voltage |
Key Features
| Feature | Design Value |
|---|---|
| Dual 256-tap DCPs | Enables simultaneous adjustment of two independent analog parameters (e.g., gain and offset) in compact space-constrained designs |
| Volatile wiper registers | Allows dynamic real-time reconfiguration via I²C; no nonvolatile memory wear-out or write-cycle limitations |
| Independent VCC/VLOGIC rails | Eliminates need for external level shifters when interfacing with sub-1.8V microcontrollers or FPGAs |
| Power-on reset to mid-scale | Guarantees known initial state (128) for both wipers-critical for safe startup in power control circuits |
| Shutdown mode with open-circuit isolation | Forces DCP into high-Z state between RH and RL while connecting RW to RL via 2kΩ, preventing unintended signal paths |
Applications
| Power Supply Margining | Sensor Circuit Trimming |
|---|---|
Use Scenario: Adjusting reference voltage or feedback divider in DC-DC converters during production test or field calibration. IC Role / Device Role / Timing Role: Dual-channel DCP provides programmable resistor ratio for precise VOUT offset and regulation tolerance verification. Use Value: Enables automated margin testing across temperature without manual potentiometer replacement; 10kΩ value matches typical feedback network impedances. | Use Scenario: Calibrating zero-point and span of analog sensor outputs (e.g., pressure, temperature) in handheld medical or industrial instruments. IC Role / Device Role / Timing Role: ISL23325WFVZ acts as digitally adjustable gain/offset network in front-end signal conditioning stage. Use Value: ±0.5 LSB INL ensures <0.2% full-scale calibration accuracy; 1.2V–5.5V VLOGIC supports direct MCU interface in ultra-low-power wearable sensors. |
| RF Power Amplifier Bias | Battery-Powered Instrument Gain Control |
Use Scenario: Dynamically compensating for temperature-induced drift in GaAs or LDMOS PA bias currents across operating range. IC Role / Device Role / Timing Role: ISL23325WFVZ configures variable current source/sink in bias network, adjusted via I²C during thermal management cycles. Use Value: 125 ppm/°C end-to-end tempco and 8 ppm/°C ratiometric tempco maintain stable bias point; shutdown mode isolates bias path during sleep. | Use Scenario: User-adjustable gain setting in portable oscilloscopes, multimeters, or audio analyzers powered by single-cell Li-ion batteries. IC Role / Device Role / Timing Role: Dual DCP replaces mechanical pots for channel gain and offset control, updated via embedded GUI or front-panel encoder. Use Value: 3µA standby current at 5V extends battery life; 10kΩ resistance optimizes SNR vs. power trade-off in amplifier feedback loops. |
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, SPI interface, 10kΩ, 10-lead MSOP; no VLOGIC/VCC separation | Lacks dual-channel capability and independent logic rail; requires SPI host instead of I²C | Select when board already uses SPI peripherals and only one adjustable resistor is needed |
| MCP45HV51-103E/MS | Dual-channel, 256-tap, I²C, 10kΩ, 16-lead QFN; supports 12V tolerant DCP pins but no 1.2V VLOGIC | Higher DCP voltage rating (12V) but minimum VLOGIC = 2.7V - incompatible with sub-1.8V MCUs | Select for high-voltage analog rails (>5.5V) where low-voltage logic interface is not required |
Compared with AD5170BRMZ-10 and MCP45HV51-103E/MS, the ISL23325WFVZ uniquely combines dual 10kΩ DCPs, true 1.2V I²C compatibility, and extended -40°C to +125°C operation - making it optimal for compact, battery-powered, multi-parameter calibration systems.
Availability
ISL23325WFVZ is available at Aetrix Electronics and suitable for power supply margining, sensor circuit trimming, RF amplifier bias compensation, and battery-powered instrument gain control requiring stable component supply across automotive, industrial, and medical environments.
Supply support for ISL23325WFVZ 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 Corporation is a global semiconductor leader delivering microcontrollers, analog, power, and connectivity solutions for automotive, industrial, infrastructure, and IoT applications.
The ISL23325WFVZ belongs to Renesas' precision analog portfolio, designed specifically for digitally programmable resistance in space-constrained, low-power, and wide-temperature industrial systems requiring reliable I²C-based calibration.
FAQ
What is the resistance tolerance and temperature coefficient of the ISL23325WFVZ?
The ISL23325WFVZ has a total resistance tolerance of ±2% and an end-to-end temperature coefficient of 125 ppm/°C, specified for the 10kΩ option. This ensures predictable drift behavior across the full -40°C to +125°C operating range, critical for stable calibration in harsh environments. The ratiometric temperature coefficient is 8 ppm/°C at tap position 0x80, minimizing relative error between channels.
Does the ISL23325WFVZ retain wiper settings after power cycling?
No, the ISL23325WFVZ uses volatile wiper registers. Upon power-up, both WR0 and WR1 reset to 0x80 (128 decimal), placing each wiper at mid-scale. To restore a specific setting, the host MCU must reprogram the wiper registers via I²C after initialization. This eliminates write endurance concerns but requires firmware initialization logic.
Can the ISL23325WFVZ operate with VCC = 1.7V and VLOGIC = 1.2V simultaneously?
Yes, the ISL23325WFVZ is fully specified to operate with VCC = 1.7V and VLOGIC = 1.2V concurrently. At these voltages, it draws only 1.2µA in shutdown mode and maintains functional I²C communication at 400kHz, enabling use in ultra-low-power systems such as energy-harvesting sensors or coin-cell-powered devices.
How does the shutdown mode affect the DCP terminals in the ISL23325WFVZ?
In shutdown mode (SHDN bit = 0 in ACR), the ISL23325WFVZ forces an open circuit between RH and RL for both DCPs while internally connecting RW to RL through a 2kΩ resistor. This isolates the potentiometer from the signal path while maintaining a defined DC path at the wiper - preventing floating nodes and unintended bias in downstream circuitry.
What is the maximum wiper current rating for the ISL23325WFVZ?
The ISL23325WFVZ specifies a maximum wiper current (IW) of ±3mA under recommended operating conditions, with an absolute maximum rating of ±6mA for short durations (≤10 seconds). Exceeding ±3mA continuously may degrade linearity or increase temperature-induced drift; design should ensure current remains within this limit during normal operation.
ISL23325WFVZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- XDCP™
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tray
- 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:
- Volatile
- Voltage - Supply:
- 1.2V ~ 5.5V, 1.7V ~ 5.5V
- Features:
- Selectable Address
- Tolerance:
- ±20%
- Temperature Coefficient (Typ):
- 125ppm/°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 14-TSSOP
- Operating Temperature:
- -40°C ~ 125°C
- Resistance - Wiper (Ohms) (Typ):
- 70
ISL23325WFVZ FAQ
1.How can I place an order for ISL23325WFVZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL23325WFVZ 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 ISL23325WFVZ reliable?
The price and inventory of ISL23325WFVZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL23325WFVZ is usually 5 days.
3.What payment methods are accepted for ISL23325WFVZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL23325WFVZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL23325WFVZ?
ISL23325WFVZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL23325WFVZ 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 ISL23325WFVZ?
For technical support, including ISL23325WFVZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL23325WFVZ requirements.
6.How does Aetrix verify that ISL23325WFVZ is sourced from the original manufacturer or authorized distributors?
All ISL23325WFVZ 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 ISL23325WFVZ meets industry standards.
7.What is the process for return or replacement of ISL23325WFVZ?
All ISL23325WFVZ units undergo pre-shipment inspection (PSI). If there is an issue with ISL23325WFVZ, 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 ISL23325WFVZ part is unused and in its original packaging.
Return procedure for ISL23325WFVZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ISL23325WFVZ Tags
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MCP4018T-103E/LT
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MCP4018T-503E/LT
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MCP4011T-103E/SN
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MCP4017T-103E/LT
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MCP4531T-103E/MF
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MCP4021T-202E/SN
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MCP4023T-103E/CH
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