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Renesas X9C102SIT2
- Part No.:
- X9C102SIT2
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
X9C102SIT2.pdf
- Description:
- IC DGTL POT 1KOHM 100TAP 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,020
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Product details
Overview
X9C102SIT2 from Renesas Electronics is a digitally controlled potentiometer (XDCP™) implementing a 99-element resistor array with 100 wiper tap points, nonvolatile wiper position storage, ±20% end-to-end resistance tolerance, and operation at 5V ±10%. It functions as a solid-state three-terminal potentiometer or two-terminal variable resistor in precision analog trimming applications such as DC offset calibration and sensor signal conditioning.
For engineers reviewing the X9C102SIT2 datasheet, X9C102SIT2 pinout, X9C102SIT2 application, or X9C102SIT2 equivalent, this page delivers verified specifications, SOIC-8 package details, wiper control timing constraints, and real-world use cases for embedded analog interface design.
Technical Context
The X9C102SIT2 uses a 7-bit up/down counter decoded to select one of 100 wiper positions across a temperature-compensated 99-resistor ladder. Its three-wire serial interface (CS, U/D, INC) operates with negative-edge-triggered INC and logic-level-controlled direction, enabling deterministic wiper stepping without microcontroller SPI peripherals.
Wiper position is retained in nonvolatile memory upon CS↑ with INC HIGH and recalled automatically at power-up. The internal charge pump supports ±5V terminal voltage swing relative to VSS while powered from a single 5V supply, and wiper series resistance is typically 40Ω with make-before-break switching behavior during position changes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| End-to-End Resistance | 1kΩ ±20% - defines full-scale adjustment range and load interaction in voltage divider configurations |
| Wiper Tap Points | 100 positions - enables 1% resolution steps for fine analog tuning without mechanical wear |
| Terminal Voltage Range | ±5V referenced to VSS - supports bipolar signal conditioning without external level-shifting circuitry |
| Supply Voltage | 5V ±10% - compatible with standard TTL/CMOS logic rails and eliminates need for auxiliary supplies |
| Wiper Resistance | 40Ω typical - contributes predictable series impedance in current-sensing or gain-setting paths |
| Nonvolatile Storage | 100-year data retention - ensures factory-calibrated settings persist across product lifecycle without backup power |
| Active Current | 3mA max - enables low-power operation in battery-backed instrumentation and portable devices |
Pinout & Package
Package: 8-lead narrow-body SOIC (M8.15E), RoHS-compliant, surface-mount, 3.90mm × 4.90mm body size, 1.27mm lead pitch.
| 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 |
| 2 U/D | Up/Down direction control | Logic level determines wiper movement direction (HIGH = increment, LOW = decrement) |
| 3 VH/RH | High-side fixed terminal | One end of resistor array; accepts -5V to +5V; polarity label reflects wiper motion direction, not voltage potential |
| 4 VSS | Ground reference | System ground return for supply and signal paths; all voltages referenced to this node |
| 5 VW/RW | Wiper output terminal | Movable contact point; series resistance ~40Ω; output voltage scales linearly with wiper position |
| 6 VL/RL | Low-side fixed terminal | Opposite end of resistor array; accepts -5V to +5V; labeling tied to U/D-defined motion axis |
| 7 CS | Chip select | Active-low enable; storage occurs on rising edge when INC is HIGH; device enters standby when deselected |
| 8 VCC | Positive supply | 5V ±10% input powering logic, memory, and charge pump; enables ±5V analog terminal swing |
Key Features
| Feature | Design Value |
|---|---|
| Solid-state construction | Eliminates mechanical wear, contact bounce, and vibration sensitivity inherent in rotary potentiometers |
| Three-wire serial interface | Requires only three GPIOs-no SPI peripheral or clock generator needed for basic wiper control |
| Nonvolatile wiper storage | Recalls last-set position at power-on, enabling repeatable startup conditions without host initialization |
| Temperature-compensated array | ±600 ppm/°C RTOTAL drift-maintains trim stability over 0°C to +70°C commercial operating range |
| Make-before-break switching | Prevents open-circuit transients during wiper movement, critical for stable biasing in amplifier feedback networks |
Applications
| DC Offset Calibration | Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Adjusting null voltage in op-amp-based instrumentation amplifiers to eliminate sensor zero-error drift. IC Role / Device Role / Timing Role: Two-terminal variable resistor in the amplifier's offset-null network, dynamically tuned during system self-test. Use Value: Enables automated factory calibration and field recalibration without manual potentiometer adjustment or firmware reflash. |
Use Scenario: Scaling thermistor or RTD bridge output to match ADC input range across temperature extremes. IC Role / Device Role / Timing Role: Three-terminal potentiometer acting as programmable voltage divider in analog front-end signal path. Use Value: Compensates for sensor nonlinearity and PCB trace resistance variation using stored lookup-table-derived wiper positions. |
| Programmable Gain Control | Power Supply Trim |
|
Use Scenario: Setting closed-loop gain of noninverting op-amp configuration via feedback resistor ratio adjustment. IC Role / Device Role / Timing Role: Variable resistor in feedback leg; wiper position determines gain magnitude with 1% resolution. Use Value: Allows digital gain selection in multi-range measurement systems without discrete resistor arrays or relays. |
Use Scenario: Fine-tuning output voltage of adjustable LDO or DC-DC converter during production test. IC Role / Device Role / Timing Role: Three-terminal potentiometer replacing mechanical trimmer in feedback divider network of voltage regulator. Use Value: Permits permanent, repeatable voltage setting stored in nonvolatile memory-no risk of accidental rotation post-calibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digitally controlled potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5171BRMZ-10 | Single-channel, I²C interface, 64 taps, 10kΩ end-to-end, 2.7–5.5V supply | Lacks ±5V terminal swing capability; requires I²C master; lower resolution (64 vs 100 taps) | Preferred where I²C bus availability and lower power (500nA standby) outweigh resolution and bipolar voltage needs |
| MCP41HV51-103E/SN | Single-channel, SPI interface, 257 taps, 10kΩ, 10–36V high-voltage operation | Higher supply voltage range but no nonvolatile storage; requires continuous host refresh to retain position | Chosen for high-voltage industrial controls where persistent storage is managed externally or unnecessary |
Compared with AD5171BRMZ-10 and MCP41HV51-103E/SN, the X9C102SIT2 uniquely combines 100-step resolution, ±5V analog terminal support from 5V supply, and autonomous nonvolatile recall-making it optimal for precision, self-contained analog trimming in commercial-grade embedded systems.
Availability
X9C102SIT2 is available at Aetrix Electronics and suitable for DC offset calibration, sensor signal conditioning, programmable gain control, and power supply trim requiring stable component supply and long-term parameter retention.
Supply support for X9C102SIT2 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 industrial, automotive, and enterprise applications.
The X9C102SIT2 belongs to Renesas' XDCP™ digitally controlled potentiometer family, designed specifically for replacing mechanical trimmers in analog signal-path calibration where reliability, repeatability, and autonomous power-up behavior are essential.
FAQ
What is the end-to-end resistance value of the X9C102SIT2?
The X9C102SIT2 has a nominal end-to-end resistance of 1kΩ with a tolerance of ±20%, as specified in the Renesas FN8222 datasheet. This value is fixed per device variant and applies across the full commercial temperature range (0°C to +70°C). The X9C102SIT2 achieves this using a 99-element resistor array with laser-trimmed elements to meet the stated tolerance band.
Does the X9C102SIT2 retain its wiper position after power cycling?
Yes, the X9C102SIT2 retains its wiper position after power cycling. It stores the current wiper setting in nonvolatile memory when CS transitions HIGH while INC is held HIGH. Upon subsequent power-up, the X9C102SIT2 automatically recalls that stored position and configures the wiper accordingly-no host intervention is required for restoration.
Can the X9C102SIT2 operate with input signals beyond the 5V supply rail?
Yes, the X9C102SIT2 supports terminal voltages from −5V to +5V relative to VSS, independent of the 5V VCC supply. This is enabled by an internal charge pump, allowing bipolar analog signal handling (e.g., ±2.5V AC-coupled sensors) while maintaining compatibility with standard 5V digital logic interfaces.
What is the wiper resistance specification for the X9C102SIT2?
The X9C102SIT2 specifies a typical wiper resistance of 40Ω, with a maximum of 100Ω under test conditions of ±1mA wiper current. This series resistance directly impacts accuracy in low-impedance feedback networks and must be accounted for in precision gain or offset calculations involving the VW/RW terminal.
Is the X9C102SIT2 pin-compatible with other members of the X9C family?
Yes, the X9C102SIT2 shares identical pinout, package (SOIC-8 M8.15E), and interface protocol with X9C103SIT2, X9C104SIT2, and X9C503SIT2. Only the end-to-end resistance differs (1kΩ vs 10kΩ/100kΩ/50kΩ); all timing, voltage, and control behavior-including nonvolatile store and recall-is functionally identical across the family.
X9C102SIT2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- XDCP™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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
X9C102SIT2 FAQ
1.How can I place an order for X9C102SIT2 through Aetrix?
Please submit a Request for Quotation (RFQ) for X9C102SIT2 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 X9C102SIT2 reliable?
The price and inventory of X9C102SIT2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for X9C102SIT2 is usually 5 days.
3.What payment methods are accepted for X9C102SIT2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X9C102SIT2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X9C102SIT2?
X9C102SIT2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X9C102SIT2 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 X9C102SIT2?
For technical support, including X9C102SIT2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X9C102SIT2 requirements.
6.How does Aetrix verify that X9C102SIT2 is sourced from the original manufacturer or authorized distributors?
All X9C102SIT2 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 X9C102SIT2 meets industry standards.
7.What is the process for return or replacement of X9C102SIT2?
All X9C102SIT2 units undergo pre-shipment inspection (PSI). If there is an issue with X9C102SIT2, 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 X9C102SIT2 part is unused and in its original packaging.
Return procedure for X9C102SIT2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
X9C102SIT2 Tags
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MCP4018T-103E/LT
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MCP4011T-103E/SN
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