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Renesas X9C104ST2
- Part No.:
- X9C104ST2
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
X9C104ST2.pdf
- Description:
- IC DGTL POT 100KOHM 100TAP 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,985
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Product details
Overview
X9C104ST2 from Renesas Electronics is a digitally controlled potentiometer (XDCP™) implementing a 99-element resistor array with 100 wiper tap points, nonvolatile wiper position storage, ±5V terminal voltage rating, and 100kΩ end-to-end resistance. It functions as a solid-state three-terminal potentiometer or two-terminal variable resistor in precision analog trimming applications such as DC bias adjustment in op-amp circuits.
For engineers reviewing the X9C104ST2 datasheet, X9C104ST2 pinout, X9C104ST2 application, or X9C104ST2 equivalent, key selection criteria include its 7-bit up/down serial interface timing (tCYC = 2µs), wiper resistance (40Ω typ), temperature coefficient (±300 ppm/°C), and industrial-grade operating range (–40°C to +85°C) for embedded control systems requiring repeatable, power-loss-resistant parameter tuning.
Technical Context
The X9C104ST2 integrates a 7-bit up/down counter, nonvolatile memory for wiper position retention, and a 99-resistor ladder with make-before-break wiper switching. Its three-wire CS/U/D/INC interface enables deterministic wiper positioning without external clock or address lines.
Operation relies on negative-edge-triggered INC input synchronized with U/D direction control and CS-select gating; wiper position is stored to EEPROM only when CS transitions HIGH while INC is HIGH. The internal charge pump supports ±5V analog terminal voltages with single 5V supply, generating 20mVRMS noise at 850kHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| End-to-End Resistance | 100kΩ ±20% - defines full-scale analog range for voltage divider or current-limiting configurations |
| Wiper Tap Points | 100 positions - enables 1% resolution steps across resistance range for fine-grained calibration |
| Terminal Voltage Range | –5V to +5V - supports bipolar signal conditioning without dual supplies |
| Wiper Resistance | 40Ω typical - contributes minimal series error in low-impedance feedback paths |
| Nonvolatile Retention | 100 years - ensures factory-set or user-trimmed values persist across power cycles and product lifetime |
| Operating Temperature | –40°C to +85°C - qualified for industrial environments including motor drives and sensor interfaces |
| Supply Current | 3mA max active / 750µA max standby - enables low-power operation in battery-backed systems |
Pinout & Package
Package: 8-lead SOIC (M8.15E footprint), RoHS-compliant, narrow-body plastic package with 1.27mm lead pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 INC | Increment clock input | Negative-edge-triggered control line; toggling moves wiper one step in U/D-defined direction |
| 2 U/D | Up/Down direction control | Logic level sets wiper movement direction during each INC transition; held stable during increment cycle |
| 3 VH/RH | High-side fixed terminal | Analog terminal referenced as "high" relative to wiper motion direction; rated –5V to +5V vs VSS |
| 4 VSS | Ground reference | Power and signal return; all analog terminal voltages defined relative to this node |
| 5 VW/RW | Wiper output terminal | Movable contact point; series resistance 40Ω typ; connects to one of 100 tap points on resistor ladder |
| 6 VL/RL | Low-side fixed terminal | Analog terminal referenced as "low" relative to wiper motion direction; rated –5V to +5V vs VSS |
| 7 CS | Chip select | Active-low enable; wiper position stored to NV memory only when CS rises HIGH while INC = HIGH |
| 8 VCC | Positive supply | 5V ±10% digital/analog supply; powers logic, memory, and charge pump for bipolar analog operation |
Key Features
| Feature | Design Value |
|---|---|
| Solid-state construction | Eliminates mechanical wear, enabling 100,000 wiper position changes per bit - suitable for automated calibration loops |
| Three-wire serial interface | Requires only CS, U/D, and INC signals - no clock or data bus overhead; compatible with GPIO-constrained microcontrollers |
| Temperature-compensated resistor array | ±300 ppm/°C RTOTAL drift - maintains trim accuracy across industrial temperature ranges without recalibration |
| Make-before-break wiper switching | Prevents open-circuit transients during position change - critical for stability in closed-loop amplifier feedback networks |
| Single-supply ±5V analog operation | Internal charge pump generates required negative rail - simplifies PCB design by eliminating dual power supplies |
Applications
| Audio Signal Level Control | DC Bias Adjustment in Op-Amp Circuits |
|---|---|
|
Use Scenario: Programmable volume control in professional audio mixers where manual potentiometers are replaced by microcontroller-adjusted gain stages. IC Role / Device Role / Timing Role: Two-terminal variable resistor setting gain in inverting amplifier configuration; wiper position updated via I²C-to-GPIO bridge. Use Value: Enables remote firmware-based calibration and recall of channel-specific trim settings without hardware modification. |
Use Scenario: Offset null adjustment in precision instrumentation amplifiers used in medical sensor front-ends. IC Role / Device Role / Timing Role: Three-terminal potentiometer providing adjustable reference voltage to op-amp input; stored value recalled at power-up. Use Value: Guarantees consistent zero-point alignment after cold start, eliminating manual recalibration during device deployment. |
| Motor Drive Current Limit Setting | Temperature-Compensated Sensor Gain Trimming |
|
Use Scenario: Setting peak current threshold in BLDC motor gate driver ICs to match winding resistance and thermal derating profiles. IC Role / Device Role / Timing Role: Two-terminal variable resistor defining sense amplifier gain in overcurrent protection circuitry. Use Value: Allows field-updatable trip thresholds aligned to motor batch variations, improving production yield and reliability. |
Use Scenario: Compensating for thermistor nonlinearity in HVAC ambient temperature sensing modules. IC Role / Device Role / Timing Role: Three-terminal potentiometer in voltage divider network feeding ADC reference; adjusted during factory calibration. Use Value: Stores temperature-dependent trim coefficients in nonvolatile memory, enabling accurate linearization across –40°C to +85°C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digitally controlled potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5243BRMZ10 | I²C interface, dual-channel, 256-tap resolution, 10kΩ nominal; no nonvolatile storage | Requires external EEPROM or host MCU to retain settings; better suited for dynamic real-time adjustment | Select when multi-channel coordination or higher resolution is needed and host-controlled persistence is acceptable |
| MCP41010-I/P | SPI interface, 257-tap resolution, 10kΩ nominal; volatile wiper register only | No power-loss retention; requires initialization sequence at boot; lower cost per channel | Select for cost-sensitive consumer applications where factory-set trims suffice and recalibration at startup is tolerable |
Compared with AD5243BRMZ10 and MCP41010-I/P, the X9C104ST2 provides guaranteed power-cycle retention without host intervention, simpler three-wire control, and industrial temperature support - making it optimal for unattended embedded systems requiring persistent analog configuration.
Availability
X9C104ST2 is available at Aetrix Electronics and suitable for industrial motor control, precision sensor signal conditioning, medical instrumentation, and audio equipment requiring stable component supply with long-term lifecycle assurance.
Supply support for X9C104ST2 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 infrastructure markets.
The X9C104ST2 belongs to Renesas' XDCP™ family of digitally controlled potentiometers, designed specifically for replacing mechanical trimmers in applications demanding long-term stability, programmability, and nonvolatile setting retention.
FAQ
What is the maximum allowable voltage across the VH/RH and VL/RL terminals of the X9C104ST2?
The X9C104ST2 specifies a maximum differential voltage ΔV = |VH/RH − VL/RL| of 10V. This limit applies regardless of individual terminal voltages, which may range from –5V to +5V relative to VSS. Exceeding 10V risks irreversible damage to the internal resistor array or switching elements. The X9C104ST2 must be operated within this constraint even during transient conditions.
Does the X9C104ST2 require an external power-down command to enter standby mode?
No - the X9C104ST2 automatically enters low-power standby mode (ISB ≤ 750µA) after completion of a store operation, which occurs when CS transitions HIGH while INC is HIGH. If CS remains LOW and no further INC edges occur, the device stays active until CS is deasserted. No additional command or signal is needed to initiate standby.
Can the X9C104ST2 be used in AC-coupled signal paths with frequencies up to 1MHz?
The X9C104ST2's potentiometer capacitances (CH/CL/CW = 10/10/25 pF) and wiper resistance (40Ω typ) form a low-pass filter with –3dB bandwidth exceeding 100MHz for typical load conditions. However, charge pump noise (20mVRMS at 850kHz) may interfere with sensitive high-frequency analog signals; use local bypassing and avoid direct placement in RF signal chains.
How many wiper position changes can the X9C104ST2 endure before failure?
The X9C104ST2 guarantees 100,000 data changes per bit in its nonvolatile memory, corresponding to 100,000 full-range wiper repositioning cycles. This endurance rating reflects write-cycle limits for the EEPROM storage element, not mechanical wear - the solid-state architecture eliminates contact degradation entirely.
Is the X9C104ST2 pin-compatible with other members of the X9C family such as X9C103 or X9C503?
Yes - the X9C104ST2 shares identical 8-lead SOIC (M8.15E) packaging, pinout, interface protocol, and electrical timing with X9C102, X9C103, and X9C503. Only the end-to-end resistance differs (100kΩ vs 1kΩ/10kΩ/50kΩ); all other functional and layout parameters are interchangeable, enabling drop-in resistance-value upgrades.
X9C104ST2 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):
- 100k
- Interface:
- Up/Down (U/D, INC, CS)
- Memory Type:
- Non-Volatile
- Voltage - Supply:
- 5V
- Features:
- -
- Tolerance:
- ±20%
- Temperature Coefficient (Typ):
- ±300ppm/°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 8-SOIC
- Operating Temperature:
- 0°C ~ 70°C
- Resistance - Wiper (Ohms) (Typ):
- 40
X9C104ST2 FAQ
1.How can I place an order for X9C104ST2 through Aetrix?
Please submit a Request for Quotation (RFQ) for X9C104ST2 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 X9C104ST2 reliable?
The price and inventory of X9C104ST2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for X9C104ST2 is usually 5 days.
3.What payment methods are accepted for X9C104ST2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X9C104ST2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X9C104ST2?
X9C104ST2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X9C104ST2 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 X9C104ST2?
For technical support, including X9C104ST2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X9C104ST2 requirements.
6.How does Aetrix verify that X9C104ST2 is sourced from the original manufacturer or authorized distributors?
All X9C104ST2 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 X9C104ST2 meets industry standards.
7.What is the process for return or replacement of X9C104ST2?
All X9C104ST2 units undergo pre-shipment inspection (PSI). If there is an issue with X9C104ST2, 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 X9C104ST2 part is unused and in its original packaging.
Return procedure for X9C104ST2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
X9C104ST2 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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MCP4018T-104E/LT
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MCP4017T-503E/LT
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MCP4018T-502E/LT
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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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MCP4022T-503E/CH
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MCP4551T-502E/MS
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