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Renesas ISL23328TFVZ-TK
- Part No.:
- ISL23328TFVZ-TK
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
ISL23328TFVZ-TK.pdf
- Description:
- IC DGT POT 100KOHM 128TP 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,879
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Product details
Overview
ISL23328TFVZ-TK from Renesas Electronics is a volatile dual 128-tap digitally controlled potentiometer (DCP) with I²C interface, 100kΩ total resistance, 1.7V–5.5V analog supply (VCC), and independent 1.2V–5.5V logic supply (VLOGIC), designed for precision trimming in battery-powered instrumentation and power supply margining.
For engineers reviewing the ISL23328TFVZ-TK datasheet, ISL23328TFVZ-TK pinout, ISL23328TFVZ-TK application, or ISL23328TFVZ-TK equivalent, key selection criteria include its extended industrial temperature range (–40°C to +125°C), wiper settling time of 3.5µs (T-option), shutdown mode with end-to-end open circuit, and 14-lead TSSOP package with RoHS-compliant matte tin termination.
Technical Context
The ISL23328TFVZ-TK integrates two independent DCP cores on a monolithic CMOS IC, each with an 8-bit volatile Wiper Register (WR0/WR1) directly accessible via I²C. It implements resistor arrays with CMOS switches operating in make-before-break mode to ensure glitch-free wiper transitions.
Its dual-supply architecture separates analog (VCC) and digital (VLOGIC) domains, enabling direct interfacing with low-voltage microcontrollers (down to 1.2V) without level shifters. The device powers up to mid-scale (64 tap) and supports shutdown mode that disconnects DCP resistors while preserving register contents.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Total Resistance | 100kΩ - defines full-scale adjustment range for voltage divider or rheostat configurations |
| Taps per Pot | 128 - provides 7.81mV/LSB resolution in 3.3V VCC voltage divider mode |
| VCC Range | 1.7V to 5.5V - supports operation across single-cell Li-ion to 5V rail systems |
| VLOGIC Range | 1.2V to 5.5V - enables direct connection to ultra-low-voltage I²C masters without translation |
| Wiper Settling Time | 3.5µs - ensures fast response for dynamic bias or gain control loops |
| Temp Range | –40°C to +125°C - qualified for under-hood automotive and industrial environments |
| Shutdown Current | 1.2µA @ VCC=1.7V/VLOGIC=1.2V - minimizes quiescent drain in always-on systems |
Pinout & Package
ISL23328TFVZ-TK is housed in a 14-lead TSSOP package (M14.173), Pb-free and RoHS compliant, with 0.65mm lead pitch and exposed pad not connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND | Ground reference | Common return for analog and digital sections; must be low-impedance |
| VLOGIC | Digital supply input | Powers I²C interface and internal level shifter; independent of VCC |
| SDA | I²C bidirectional data | Open-drain; requires external pull-up to VLOGIC |
| SCL | I²C clock input | Open-drain; requires external pull-up to VLOGIC |
| A0–A2 | Slave address inputs | Hardwired to VLOGIC or GND to select one of eight I²C addresses |
| RL0, RW0, RH0 | DCP0 terminals | Low/wiper/high connections for first potentiometer; support voltage divider or rheostat use |
| RL1, RW1, RH1 | DCP1 terminals | Low/wiper/high connections for second potentiometer; fully independent of DCP0 |
| VCC | Analog supply input | Powers resistor array and wiper switches; sets DCP terminal voltage range (0 to VCC) |
Key Features
| Feature | Design Value |
|---|---|
| Dual 128-tap DCPs | Enables simultaneous independent adjustment of two signal paths (e.g., dual-channel gain or offset trim) |
| Volatile wiper registers | Allows real-time reconfiguration via I²C; no nonvolatile memory wear-out or write latency |
| Independent VLOGIC supply | Eliminates need for external level shifters when interfacing with 1.2V–1.8V microcontrollers |
| Power-on mid-scale preset | Guarantees known initial state (64/127) at startup, preventing undefined output transients |
| Shutdown mode | Forces open-circuit between RH and RL while connecting RW to RL via 2kΩ, reducing system leakage |
Applications
| Power Supply Margining | Trimming Sensor Circuits |
|---|---|
Use Scenario: Adjusting reference voltage thresholds in DC-DC converter feedback networks during production test or field calibration. IC Role / Device Role / Timing Role: Dual DCP acts as programmable voltage divider to inject precise ±5% margin offsets into VREF nodes. Use Value: Enables automated margin testing without manual resistor changes; 100kΩ resistance minimizes loading on high-impedance feedback dividers. | Use Scenario: Compensating offset and gain drift in bridge-based pressure or temperature sensor front-ends. IC Role / Device Role / Timing Role: One DCP trims zero-point offset (RW0–RL0 path), the other adjusts full-scale gain (RW1–RH1 path) in real time. Use Value: Achieves <±0.15 LSB INL over –40°C to +125°C, meeting industrial sensor accuracy requirements. |
| Gain Adjustment in Battery Instruments | RF Power Amplifier Bias Compensation |
Use Scenario: Dynamically scaling amplifier gain in portable oscilloscopes or handheld multimeters based on input range selection. IC Role / Device Role / Timing Role: Configured as rheostat (RW0–RL0) in op-amp feedback loop to set closed-loop gain. Use Value: 3.5µs wiper settling supports >100kHz update rates; 1.7V minimum VCC extends runtime in single-cell Li-ion systems. | Use Scenario: Stabilizing quiescent current in GaAs FET RF PAs across temperature and process variation. IC Role / Device Role / Timing Role: DCP0 sets gate bias voltage (voltage divider RH0–RW0–RL0); DCP1 adjusts source degeneration (rheostat RW1–RL1). Use Value: 45 ppm/°C end-to-end tempco (T-option) maintains PA linearity; shutdown mode isolates bias network during sleep. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digitally controlled potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5242BRUZ100 | Single 100kΩ, 256-tap, SPI interface, 2.7–5.5V supply only | Lacks dual-pot integration and independent VLOGIC; requires level shifting for sub-2.7V masters | Choose when higher resolution (256 taps) is critical and dual-channel operation is unnecessary |
| MCP42100-I/P | Dual 100kΩ, 256-tap, SPI interface, 2.7–5.5V supply only, through-hole PDIP | No VLOGIC independence; larger package; SPI instead of I²C; no shutdown mode | Prefer for legacy designs using SPI buses and where board space allows PDIP mounting |
Compared with AD5242BRUZ100 and MCP42100-I/P, the ISL23328TFVZ-TK uniquely combines dual 128-tap pots, I²C compatibility down to 1.2V logic, and integrated shutdown-making it optimal for space-constrained, low-power, multi-channel trimming in modern embedded systems.
Availability
ISL23328TFVZ-TK is available at Aetrix Electronics and suitable for power supply margining, sensor trimming, battery-instrument gain control, and RF amplifier bias compensation requiring stable component supply across extended temperature ranges.
Supply support for ISL23328TFVZ-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 is a global semiconductor leader delivering microcontrollers, analog, power, and SoC solutions for automotive, industrial, infrastructure, and IoT applications.
The ISL23328TFVZ-TK belongs to Renesas' XDCP™ (eXternally Digitally Controlled Potentiometer) family, engineered specifically for precision, low-power, and wide-temperature trimming in battery-operated and harsh-environment systems.
FAQ
What is the resistance tolerance and temperature coefficient of the ISL23328TFVZ-TK?
The ISL23328TFVZ-TK has a total resistance tolerance of ±2% and an end-to-end temperature coefficient of 45 ppm/°C (T-option). These values are specified over the full –40°C to +125°C operating range and ensure stable performance in industrial and automotive environments where thermal drift must be minimized. The ISL23328TFVZ-TK's ratiometric tempco (TCV) is 2.3 ppm/°C at mid-scale, further enhancing voltage-divider accuracy.
Does the ISL23328TFVZ-TK retain wiper settings after power cycling?
No, the ISL23328TFVZ-TK uses volatile wiper registers and resets to mid-scale (64 tap) on every power-up. This behavior is guaranteed by internal power-on reset circuitry and ensures a known, safe default state for systems where undefined outputs could cause malfunction. The ISL23328TFVZ-TK does not include nonvolatile memory; persistent settings require host MCU firmware to reprogram WR0 and WR1 after startup.
Can the ISL23328TFVZ-TK operate with different voltages on VCC and VLOGIC simultaneously?
Yes, the ISL23328TFVZ-TK supports independent supplies: VCC from 1.7V to 5.5V for the analog DCP section, and VLOGIC from 1.2V to 5.5V for the I²C interface. This allows direct connection to a 1.2V microcontroller I²C bus while powering the potentiometer array from a separate 3.3V or 5V rail-eliminating external level shifters and simplifying mixed-voltage system design. The ISL23328TFVZ-TK's internal level shifter ensures robust communication across this full voltage range.
What is the maximum wiper current rating for the ISL23328TFVZ-TK?
The ISL23328TFVZ-TK specifies a maximum wiper current of ±3mA under recommended operating conditions. This limit applies continuously and is derated at elevated temperatures. Exceeding ±3mA may cause irreversible damage to the CMOS switch elements or induce significant wiper resistance drift. For rheostat-mode applications, users must ensure that the voltage across RW–RL or RW–RH never drives current beyond this rating-especially critical in low-resistance configurations or high-VCC conditions.
How many ISL23328TFVZ-TK devices can share the same I²C bus?
Up to eight ISL23328TFVZ-TK devices can operate on a single I²C bus, enabled by three hardware-configurable address pins (A0, A1, A2). Each pin can be tied to VLOGIC (logic HIGH) or GND (logic LOW), generating a unique 3-bit slave address. This addressing scheme eliminates software configuration overhead and supports scalable multi-pot systems-for example, trimming eight independent power rails or sensor channels with a single microcontroller I²C port. The ISL23328TFVZ-TK's 400kHz maximum SCL frequency ensures responsive updates even in dense bus configurations.
ISL23328TFVZ-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:
- 128
- Resistance (Ohms):
- 100k
- Interface:
- I2C
- Memory Type:
- Volatile
- Voltage - Supply:
- 1.2V ~ 5.5V, 1.7V ~ 5.5V
- Features:
- Selectable Address
- Tolerance:
- ±20%
- Temperature Coefficient (Typ):
- 45ppm/°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 14-TSSOP
- Operating Temperature:
- -40°C ~ 125°C
- Resistance - Wiper (Ohms) (Typ):
- 70
ISL23328TFVZ-TK FAQ
1.How can I place an order for ISL23328TFVZ-TK through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL23328TFVZ-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 ISL23328TFVZ-TK reliable?
The price and inventory of ISL23328TFVZ-TK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL23328TFVZ-TK is usually 5 days.
3.What payment methods are accepted for ISL23328TFVZ-TK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL23328TFVZ-TK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL23328TFVZ-TK?
ISL23328TFVZ-TK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL23328TFVZ-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 ISL23328TFVZ-TK?
For technical support, including ISL23328TFVZ-TK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL23328TFVZ-TK requirements.
6.How does Aetrix verify that ISL23328TFVZ-TK is sourced from the original manufacturer or authorized distributors?
All ISL23328TFVZ-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 ISL23328TFVZ-TK meets industry standards.
7.What is the process for return or replacement of ISL23328TFVZ-TK?
All ISL23328TFVZ-TK units undergo pre-shipment inspection (PSI). If there is an issue with ISL23328TFVZ-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 ISL23328TFVZ-TK part is unused and in its original packaging.
Return procedure for ISL23328TFVZ-TK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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