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Renesas X9C102S
- Part No.:
- X9C102S
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
X9C102S.pdf
- Description:
- IC DGTL POT 1KOHM 100TAP 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,125
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Product details
Overview
X9C102S from Renesas Electronics is a digitally controlled potentiometer (XDCP™) implementing a 99-element resistor array with nonvolatile wiper position storage, 1 kΩ end-to-end resistance, ±20% tolerance, and ±5 V terminal voltage rating. It operates as a three-terminal voltage divider or two-terminal variable resistor in analog signal conditioning and parameter trimming circuits.
For engineers reviewing the X9C102S datasheet, X9C102S pinout, X9C102S application, or X9C102S equivalent, this device supports precise digital adjustment of gain, offset, and bias in industrial sensor interfaces, audio volume control, and power supply feedback networks - with guaranteed recall of last-set wiper position after power cycling.
Technical Context
The X9C102S uses a 7-bit up/down counter decoded to select one of 100 wiper tap points across its resistor array, with negative-edge-triggered INC input and logic-level-controlled U/D direction signal. Its internal charge pump enables ±5 V analog terminal operation from a single 5 V supply.
Wiper position is stored in nonvolatile memory upon CS HIGH transition while INC is HIGH, and recalled automatically at power-up. The device employs make-before-break switching during wiper transitions and exhibits ±600 ppm/°C end-to-end resistance temperature coefficient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| End-to-End Resistance | 1 kΩ ±20% - defines full-scale analog range for voltage division or current limiting |
| Wiper Tap Points | 100 positions (0–99) - enables 1% resolution step control of analog output |
| Terminal Voltage Range | ±5 V referenced to VSS - supports bipolar signal conditioning without dual supplies |
| Supply Voltage | 5 V ±10% - compatible with standard TTL/CMOS logic rails |
| Wiper Resistance | 40 Ω typical - minimizes insertion error in low-impedance feedback paths |
| Nonvolatile Storage | 100-year data retention - ensures factory calibration or user trim persists over product lifetime |
| Temperature Range | 0°C to +70°C - validated for commercial-grade embedded systems and instrumentation |
Pinout & Package
Package: 8-lead narrow-body SOIC (M8.15E), RoHS-compliant, surface-mountable with standard land pattern per JEDEC MS-012.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 INC | Increment clock input | Negative-edge-triggered control signal that advances or retracts wiper based on U/D state |
| 2 U/D | Direction control | Logic level selects wiper movement direction: HIGH = increment, LOW = decrement |
| 3 VH/RH | High-side fixed terminal | Analog terminal with ±5 V rating; polarity label indicates relative position, not voltage sign |
| 4 VSS | Ground reference | Common return for digital control and analog terminals; must be connected before applying analog signals |
| 5 VW/RW | Wiper output | Movable analog terminal with 40 Ω series resistance; connects to selected tap point in resistor array |
| 6 VL/RL | Low-side fixed terminal | Analog terminal with ±5 V rating; labeled relative to wiper motion direction, not absolute potential |
| 7 CS | Chip select | Active-low enable; storage triggered by HIGH-to-LOW-to-HIGH sequence with INC HIGH |
| 8 VCC | Power supply | 5 V ±10% digital supply powering control logic, memory, and charge pump |
Key Features
| Feature | Design Value |
|---|---|
| Solid-state construction | Eliminates mechanical wear, enabling 100,000 wiper adjustments per bit - suitable for automated calibration loops |
| Three-wire serial interface | Requires only CS, U/D, and INC signals - minimal GPIO usage vs SPI/I²C, ideal for microcontroller-constrained designs |
| Nonvolatile wiper storage | Recalls last position at power-up without external EEPROM or firmware initialization - reduces boot-time configuration overhead |
| Charge pump architecture | Supports ±5 V analog operation from single 5 V rail - simplifies power design in mixed-signal systems |
| Make-before-break switching | Prevents open-circuit transients during wiper movement - critical for stable operation in feedback control paths |
Applications
| Industrial Sensor Calibration | Audio Volume Control |
|---|---|
Use Scenario: Trimming offset and gain in 4–20 mA transmitter front-ends using RTD or strain gauge inputs. IC Role / Device Role / Timing Role: Two-terminal variable resistor in op-amp feedback path to set transducer excitation current and amplifier gain. Use Value: Enables field-adjustable calibration without potentiometer replacement; nonvolatile storage preserves settings across maintenance cycles. |
Use Scenario: Digital volume control in consumer audio DAC output stages with headphone amplifiers. IC Role / Device Role / Timing Role: Three-terminal potentiometer configured as voltage divider between DAC output and amplifier input. Use Value: Provides monotonic 1% step resolution and eliminates channel imbalance common in mechanical dual-gang pots. |
| Programmable Power Supply Feedback | Embedded System Parameter Tuning |
Use Scenario: Adjusting output voltage of adjustable DC-DC converters (e.g., LM317-based regulators) via remote host MCU. IC Role / Device Role / Timing Role: Replaces fixed resistor in feedback divider network to dynamically set regulated output voltage. Use Value: Allows software-defined voltage scaling without hardware change; recall-on-power-up maintains last-programmed setting. |
Use Scenario: User-configurable thresholds in medical device front-end amplifiers (e.g., ECG lead-off detection). IC Role / Device Role / Timing Role: Adjustable bias resistor in comparator hysteresis network or amplifier reference divider. Use Value: Supports factory calibration and user customization via simple GPIO toggles - no firmware update required. |
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 | 10 kΩ end-to-end resistance, I²C interface, 64-tap resolution, 2.7–5.5 V supply | Higher resolution but lower analog voltage range (±2.5 V); requires I²C bus resources | Select when I²C infrastructure exists and finer 1.56% steps are needed over broader supply range |
| MCP41010-I/P | 10 kΩ, SPI interface, 257-tap resolution, 2.7–5.5 V supply, volatile wiper register | No nonvolatile storage - wiper resets to mid-scale at power-up; requires host MCU to reload setting | Choose for cost-sensitive designs where host firmware can manage persistent state and SPI is available |
Compared with AD5171BRMZ-10 and MCP41010-I/P, the X9C102S offers deterministic power-up behavior via nonvolatile recall, simpler three-wire control, and bipolar ±5 V analog capability - making it optimal for self-contained analog trimming where reliability and supply simplicity outweigh resolution or bus flexibility needs.
Availability
X9C102S is available at Aetrix Electronics and suitable for industrial sensor calibration, programmable power supply feedback, and embedded system parameter tuning requiring stable component supply, long-term calibration retention, and single-supply analog compatibility.
Supply support for X9C102S 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 infrastructure markets.
The X9C102S belongs to Renesas' XDCP™ family of digitally controlled potentiometers, designed specifically for replacing mechanical trimmers in precision analog circuits where long-term stability, digital programmability, and power-cycle persistence are essential.
FAQ
What is the end-to-end resistance value of the X9C102S?
The X9C102S has a nominal end-to-end resistance of 1 kΩ with a tolerance of ±20%, as specified in the Renesas FN8222 datasheet. This value is measured between the VH/RH and VL/RL terminals with the wiper disconnected, and remains stable across the 0°C to +70°C commercial temperature range. The X9C102S part number explicitly denotes the 1 kΩ variant within the X9C family.
Does the X9C102S retain its wiper position after power loss?
Yes, the X9C102S stores the wiper position in nonvolatile memory and automatically recalls it upon power-up. Storage is triggered by a specific sequence: CS HIGH while INC is HIGH. Once stored, the setting persists for up to 100 years under normal operating conditions. This behavior is intrinsic to the X9C102S design and does not require external components or firmware intervention.
What is the maximum allowable voltage across the VH/RH and VL/RL terminals of the X9C102S?
The absolute maximum voltage difference (ΔV) between VH/RH and VL/RL for the X9C102S is 4 V, as defined in the Absolute Maximum Ratings table of the FN8222 datasheet. Exceeding this limit risks permanent damage. Each terminal individually supports −5 V to +5 V referenced to VSS, but their differential must stay within ±4 V to ensure reliable operation of the X9C102S resistor array.
Can the X9C102S operate with analog signals outside the 0–5 V range?
Yes, the X9C102S supports analog terminal voltages from −5 V to +5 V relative to VSS, enabling true bipolar operation. Its internal charge pump allows this extended range while powered from a single 5 V supply. However, the differential voltage across VH/RH and VL/RL must not exceed ±4 V. This capability makes the X9C102S suitable for AC-coupled or dual-rail analog circuits without requiring additional level-shifting circuitry.
How many wiper positions does the X9C102S provide, and what is the resolution?
The X9C102S provides 100 discrete wiper positions (0 through 99), corresponding to 1% resolution steps across its 1 kΩ end-to-end resistance. This resolution is derived from its 99-resistor-element array with taps at both ends and between each element. The minimum incremental change (MI) equals RTOTAL/99 ≈ 10.1 Ω, and absolute linearity is specified at ±1 MI, ensuring predictable analog output stepping in applications using the X9C102S.
X9C102S Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- XDCP™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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:
- 0°C ~ 70°C
- Resistance - Wiper (Ohms) (Typ):
- 40
X9C102S FAQ
1.How can I place an order for X9C102S through Aetrix?
Please submit a Request for Quotation (RFQ) for X9C102S 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 X9C102S reliable?
The price and inventory of X9C102S are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for X9C102S is usually 5 days.
3.What payment methods are accepted for X9C102S?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X9C102S transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X9C102S?
X9C102S orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X9C102S 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 X9C102S?
For technical support, including X9C102S datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X9C102S requirements.
6.How does Aetrix verify that X9C102S is sourced from the original manufacturer or authorized distributors?
All X9C102S 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 X9C102S meets industry standards.
7.What is the process for return or replacement of X9C102S?
All X9C102S units undergo pre-shipment inspection (PSI). If there is an issue with X9C102S, 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 X9C102S part is unused and in its original packaging.
Return procedure for X9C102S:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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