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Renesas X9C102SIZ
- Part No.:
- X9C102SIZ
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
X9C102SIZ.pdf
- Description:
- IC DGTL POT 1KOHM 100TAP 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,494
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Product details
Overview
X9C102SIZ from Renesas Electronics is a digitally controlled potentiometer (XDCP™) with 1 kΩ end-to-end resistance, 100 wiper tap points, and nonvolatile memory for power-up recall. It implements a 99-element resistor array with make-before-break switching, operates from a single 5 V supply, and supports ±5 V terminal voltage range. It serves as a solid-state replacement for mechanical potentiometers in precision analog trimming circuits.
For engineers reviewing the X9C102SIZ datasheet, X9C102SIZ pinout, X9C102SIZ application, or X9C102SIZ equivalent, this page delivers verified specifications, SOIC-8 package details, three-wire interface timing, wiper resistance (40 Ω typ), and industrial-grade (-40°C to +85°C) operation - all critical for embedded analog control, sensor calibration, and programmable gain design.
Technical Context
The X9C102SIZ integrates a 7-bit up/down counter, nonvolatile EEPROM storage, and a 99-resistor ladder with decoded wiper selection. Its three-wire serial interface (CS, U/D, INC) uses negative-edge-triggered INC and level-sensitive U/D to control wiper direction and position.
Wiper position is stored on CS↑ while INC = HIGH, enabling deterministic power-up behavior. The internal charge pump supports ±5 V across VH/RH and VL/RL terminals despite a single 5 V VCC supply, with typical charge pump noise of 20 mVRMS at 850 kHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| End-to-End Resistance | 1 kΩ ±20% - defines full-scale analog range and load interaction in voltage divider or variable resistor configurations. |
| Wiper Tap Points | 100 positions (0–99) - enables 1% resolution adjustment without external DAC or microcontroller ADC feedback loop. |
| Terminal Voltage Range | ±5 V referenced to VSS - allows bidirectional signal conditioning and compatibility with op-amp rails in ±5 V systems. |
| Wiper Resistance | 40 Ω typical - contributes minimal series impedance error when used as a variable resistor or low-gain attenuator. |
| Nonvolatile Storage Endurance | 100,000 write cycles per bit - supports field recalibration and long-term parameter tuning in maintenance-free instrumentation. |
| Operating Temperature | -40°C to +85°C - qualified for industrial environments including motor drives, PLC I/O modules, and HVAC controllers. |
| Supply Current (Active) | 3 mA max at 5 V - enables low-power operation in battery-backed or energy-constrained analog subsystems. |
| Standby Current | 750 µA max - reduces quiescent power during idle periods without losing wiper state. |
Pinout & Package
Package: 8-lead narrow-body SOIC (M8.15E), RoHS-compliant, surface-mount, industrial temperature grade (-40°C to +85°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 INC | Increment clock input | Negative-edge-triggered control signal; toggling moves wiper one step in direction set by U/D; determines timing of wiper update (tIW = 100 µs). |
| 2 U/D | Up/Down direction control | Static logic level (HIGH = increment, LOW = decrement); may be changed dynamically during CS-active window without interrupting operation. |
| 3 VH/RH | High-side fixed terminal | One end of resistor array; rated for -5 V to +5 V; polarity label reflects wiper movement direction, not absolute voltage potential. |
| 4 VSS | Ground reference | Primary return path for VCC and all analog terminals; must be low-impedance to minimize noise coupling into wiper output. |
| 5 VW/RW | Wiper output terminal | Movable contact point; series resistance 40 Ω typ; settles within 500 µs after power-up; supports make-before-break transitions during multi-step moves. |
| 6 VL/RL | Low-side fixed terminal | Opposite end of resistor array; identical voltage rating as VH/RH; terminal labeling is directional relative to U/D state, not DC bias. |
| 7 CS | Chip select | Active-low enable; initiates wiper update when LOW; stores current position to NV memory on rising edge if INC = HIGH; places device in standby when deasserted. |
| 8 VCC | Positive supply | 5 V ±10% single supply; powers logic, charge pump, and memory; ramp rate must be 0.2–50 V/ms to ensure reliable NV recall. |
Key Features
| Feature | Design Value |
|---|---|
| Solid-state construction | Eliminates mechanical wear, vibration sensitivity, and contact bounce - ensures >100-year data retention and stable resistance over 100,000 adjustments. |
| Three-wire serial interface | Requires only CS, U/D, and INC signals - simplifies MCU GPIO usage without SPI hardware or clock line management overhead. |
| Nonvolatile wiper position storage | Automatically recalls last stored setting at power-up - enables factory-trimmed calibration persistence across power cycles without host intervention. |
| Temperature-compensated resistor array | ±600 ppm/°C RTOTAL drift - maintains consistent taper and division ratio across industrial temperature range without software compensation. |
| Charge pump support for bipolar terminals | Enables ±5 V analog signal handling with single 5 V rail - removes need for dual supplies in op-amp biasing, offset adjustment, or AC-coupled gain control. |
| Make-before-break wiper switching | Prevents open-circuit transients during position changes - avoids signal dropout or glitch in sensitive feedback paths like PID loop references. |
Applications
| Audio Signal Level Control | Industrial Sensor Calibration |
|---|---|
|
Use Scenario: Adjusting gain and offset in microphone preamplifiers or line-level audio routing. IC Role / Device Role / Timing Role: Two-terminal variable resistor configuring op-amp feedback network; wiper updated via microcontroller GPIO during user menu navigation. Use Value: Replaces mechanical pots subject to dust ingress and wear; retains last volume setting after power loss; 1% resolution enables fine-grained loudness control. |
Use Scenario: Compensating zero and span errors in 4–20 mA pressure transmitters. IC Role / Device Role / Timing Role: Three-terminal potentiometer in Wheatstone bridge nulling circuit; calibrated once during production and recalled on every boot. Use Value: Eliminates manual trimmer adjustment labor; guarantees repeatability across batches; ±600 ppm/°C stability meets industrial sensor accuracy requirements. |
| Programmable Power Supply Feedback | Embedded System Parameter Tuning |
|
Use Scenario: Setting output voltage of adjustable DC-DC converters using TL431-based feedback. IC Role / Device Role / Timing Role: Voltage divider between VREF and output rail; wiper position adjusted dynamically to compensate for load regulation drift. Use Value: Enables remote firmware-controlled output reconfiguration without hardware change; 40 Ω wiper resistance minimizes loading error on TL431 reference node. |
Use Scenario: User-configurable thresholds in medical device front-end amplifiers (e.g., ECG lead-off detection). IC Role / Device Role / Timing Role: Adjustable resistor in comparator hysteresis network; value stored in NV memory and restored at startup. Use Value: Supports multiple clinical profiles; avoids EEPROM wear-out from frequent writes; deterministic power-on state improves regulatory test repeatability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digitally controlled potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5241BRMZ10 | 10 kΩ end-to-end resistance; I²C interface; 256-tap resolution; 2.7–5.5 V supply. | Requires I²C master and pull-up resistors; higher resolution but no native ±5 V terminal support. | Select when system already uses I²C infrastructure and 10 kΩ impedance better matches existing feedback networks. |
| MCP41010-I/P | 10 kΩ; SPI interface; volatile wiper register; requires external MCU to restore position on power-up. | No nonvolatile storage - wiper resets to mid-scale at boot unless host reloads value. | Choose for cost-sensitive designs where power-cycle persistence is unnecessary and SPI is preferred over GPIO-based control. |
Compared with AD5241BRMZ10 and MCP41010-I/P, the X9C102SIZ offers unique advantages: native ±5 V analog terminal capability with single 5 V supply, true nonvolatile wiper recall without host firmware involvement, and minimal GPIO resource usage - making it optimal for industrial analog trimming where reliability and simplicity outweigh resolution or interface flexibility.
Availability
X9C102SIZ is available at Aetrix Electronics and suitable for industrial sensor calibration, programmable power supply feedback, and embedded system parameter tuning requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for X9C102SIZ 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 high-performance, reliable microcontrollers, analog, and power solutions for industrial, automotive, and enterprise applications.
The X9C102SIZ belongs to Renesas' XDCP™ family of digitally controlled potentiometers, designed specifically for replacing mechanical trimmers in harsh-environment analog systems requiring long-term stability, nonvolatile settings, and robust digital control.
FAQ
What is the maximum voltage that can be applied across VH/RH and VL/RL terminals of the X9C102SIZ?
The X9C102SIZ allows a maximum differential voltage of 4 V across VH/RH and VL/RL terminals, as specified in Absolute Maximum Ratings. This limit applies regardless of VCC level and ensures safe operation of the internal resistor array and switching network. Exceeding 4 V risks irreversible damage to the wiper switches and resistor elements.
Does the X9C102SIZ retain its wiper position after power cycling?
Yes, the X9C102SIZ retains its wiper position after power cycling because it stores the counter value in nonvolatile memory. Upon power-up, once VCC reaches its final value, the stored position is automatically recalled to the wiper - no host MCU action is required. This behavior is guaranteed across the full -40°C to +85°C operating range.
Can the X9C102SIZ be used with a 3.3 V microcontroller interface?
Yes, the X9C102SIZ's CS, U/D, and INC inputs accept TTL-compatible logic levels: VIH ≥ 2 V and VIL ≤ 0.8 V. A 3.3 V MCU can directly drive these pins without level shifting. However, VCC must remain at 5 V ±10% to ensure proper charge pump operation and ±5 V terminal capability.
What is the wiper resistance specification for the X9C102SIZ, and how does it affect circuit performance?
The X9C102SIZ has a typical wiper resistance of 40 Ω, with a maximum of 100 Ω. This series resistance introduces minimal error in high-impedance voltage divider applications but must be accounted for in low-impedance current-sensing or precision gain-setting configurations. For example, in a 1 kΩ total resistance setup, 40 Ω adds ~4% uncertainty at extreme wiper positions.
How is the X9C102SIZ protected against electrostatic discharge (ESD)?
The X9C102SIZ incorporates on-chip ESD protection diodes on all pins, rated to withstand human-body-model (HBM) ESD events up to ±2 kV per JEDEC JS-001. No external ESD components are required for standard handling, though PCB layout best practices (e.g., ground plane, short traces) are recommended for high-noise industrial environments.
X9C102SIZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- XDCP™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Taper:
- Linear
- Configuration:
- Potentiometer
- Number of Circuits:
- 1
- Number of Taps:
- 100
- Resistance (Ohms):
- 1k
- Interface:
- Up/Down (U/D, INC, CS)
- Memory Type:
- Non-Volatile
- Voltage - Supply:
- 5V
- Features:
- -
- Tolerance:
- ±20%
- Temperature Coefficient (Typ):
- ±600ppm/°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 8-SOIC
- Operating Temperature:
- -40°C ~ 85°C
- Resistance - Wiper (Ohms) (Typ):
- 40
X9C102SIZ FAQ
1.How can I place an order for X9C102SIZ through Aetrix?
Please submit a Request for Quotation (RFQ) for X9C102SIZ 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 X9C102SIZ reliable?
The price and inventory of X9C102SIZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for X9C102SIZ is usually 5 days.
3.What payment methods are accepted for X9C102SIZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X9C102SIZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X9C102SIZ?
X9C102SIZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X9C102SIZ 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 X9C102SIZ?
For technical support, including X9C102SIZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X9C102SIZ requirements.
6.How does Aetrix verify that X9C102SIZ is sourced from the original manufacturer or authorized distributors?
All X9C102SIZ 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 X9C102SIZ meets industry standards.
7.What is the process for return or replacement of X9C102SIZ?
All X9C102SIZ units undergo pre-shipment inspection (PSI). If there is an issue with X9C102SIZ, 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 X9C102SIZ part is unused and in its original packaging.
Return procedure for X9C102SIZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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