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Renesas X9315USZ-2.7
- Part No.:
- X9315USZ-2.7
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
X9315USZ-2.7.pdf
- Description:
- IC DGTL POT 50KOHM 32TAP 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,822
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Product details
Overview
X9315USZ-2.7 from Intersil is a digitally controlled potentiometer (XDCP™) implementing a 31-element resistor array with 32 wiper tap points, nonvolatile wiper position storage, and 3-wire serial interface (CS/U/D/INC). It operates from 2.7V to 5.5V, delivers ±20% end-to-end resistance tolerance, and supports 0–VCC terminal voltage range. It serves as a solid-state replacement for mechanical potentiometers in precision analog trimming applications such as sensor calibration and power supply feedback networks.
For engineers reviewing the X9315USZ-2.7 datasheet, X9315USZ-2.7 pinout, X9315USZ-2.7 application, or X9315USZ-2.7 equivalent, key selection criteria include its 2.7V minimum supply compatibility, 10kΩ total resistance, SOIC-8 Pb-free RoHS-compliant package, nonvolatile memory retention (100 years), and low 5µA standby current - critical for battery-powered and industrial control systems requiring persistent settings across power cycles.
Technical Context
The X9315USZ-2.7 integrates a 5-bit up/down counter, nonvolatile EEPROM for wiper position storage, and a decoder-driven resistor array with make-before-break switching. Its control logic responds to negative-edge-triggered INC pulses while U/D sets direction, and CS enables selection and initiates nonvolatile store on rising edge with INC high.
It features temperature-compensated resistive elements with ±300 ppm/°C RTOTAL coefficient and ratiometric coefficient of ±20 ppm/°C. Wiper resistance is 400–1000Ω at 2.7V, and absolute linearity error is ±1 MI (minimum increment = RTOTAL/31), enabling predictable voltage division across all 32 taps.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Total resistance (RTOTAL) | 10kΩ ±20% - defines full-scale analog adjustment range and load interaction in voltage divider or variable resistor configurations |
| Supply voltage range | 2.7V to 5.5V - enables direct integration into 3.3V and 5V systems without level-shifting |
| Wiper positions | 32 discrete taps - provides 3.125% resolution per step for fine-grained analog control |
| Nonvolatile memory | 100-year data retention, 100,000 write cycles - ensures factory-set or user-trimmed values survive long-term storage and repeated recalibration |
| Standby current | 5µA max - minimizes quiescent power in always-on or energy-sensitive applications |
| Operating temperature | 0°C to +70°C - validated for commercial-grade embedded systems including consumer electronics and industrial HMIs |
| Interface protocol | 3-wire asynchronous serial (CS/U/D/INC) - requires no clock signal or firmware overhead beyond GPIO toggling |
Pinout & Package
Package: 8-lead SOIC (Pb-free, RoHS-compliant), JEDEC MS-012-AA, body dimensions 4.90mm × 3.90mm × 1.75mm max.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Positive supply input | Accepts 2.7–5.5V; powers internal logic and resistor array; must be ≥ VH, VL, VW |
| VSS | Ground reference | Return path for supply and signal; establishes 0V baseline for RH/VH and RL/VL terminals |
| RH/VH | High terminal | Fixed end of resistor array; voltage ranges from VSS to VCC; not polarity-fixed - role depends on wiper direction |
| RL/VL | Low terminal | Opposite fixed end; completes three-terminal potentiometer or two-terminal variable resistor configuration |
| RW/VW | Wiper output | Movable tap point; series resistance 400–1000Ω at 2.7V; outputs interpolated voltage between RH and RL |
| CS | Chip select | Active-low enable; rising edge with INC=HIGH triggers nonvolatile store; high state places device in 5µA standby |
| U/D | Direction control | Sets wiper movement direction (up/down) during INC transitions; may be changed dynamically while CS is low |
| INC | Increment clock | Negative-edge-triggered; advances wiper one position per valid edge; timing min. 1µs low/high periods |
Key Features
| Feature | Design Value |
|---|---|
| Solid-state potentiometer architecture | Eliminates mechanical wear, contact bounce, and vibration sensitivity - ideal for high-reliability industrial environments |
| Nonvolatile wiper position storage | Recalls last setting at power-up without external MCU intervention - simplifies system boot sequence and reduces firmware complexity |
| Temperature-compensated resistor array | Maintains ±20 ppm/°C ratiometric stability - preserves voltage division accuracy across ambient temperature shifts in sensor front-ends |
| Make-before-break wiper switching | Prevents open-circuit transients during tap changes - avoids signal dropout in audio or control loop applications |
| Pb-free SOIC-8 packaging | RoHS-compliant, JEDEC MS-012-AA footprint - ensures drop-in compatibility with standard 8-lead SOIC reflow profiles and PCB layouts |
Applications
| Audio Signal Level Control | Power Supply Feedback Trimming |
|---|---|
Use Scenario: Adjusting gain or volume in analog audio paths of consumer amplifiers or professional mixing consoles. IC Role / Device Role / Timing Role: Functions as a digitally programmable voltage divider between input and op-amp inverting node, replacing mechanical pots subject to drift and noise. Use Value: Delivers low -120dBV noise floor and 32-step resolution to maintain clean audio signal integrity while enabling remote or automated calibration via microcontroller GPIO. | Use Scenario: Fine-tuning output voltage of adjustable DC-DC converters or linear regulators in telecom power modules. IC Role / Device Role / Timing Role: Replaces fixed resistor in feedback divider network (e.g., LM317, TL431 circuits), allowing dynamic output voltage adjustment under firmware control. Use Value: Enables field-programmable output voltages and factory calibration persistence - eliminates manual trimmer adjustments and improves production test repeatability. |
| Sensor Offset Calibration | Industrial Process Controller Gain Setting |
Use Scenario: Compensating zero-point drift in pressure, temperature, or current-sense amplifier outputs before ADC digitization. IC Role / Device Role / Timing Role: Acts as two-terminal variable resistor in offset nulling circuit (e.g., op-amp input bias compensation), adjusted during system self-test. Use Value: Provides stable, nonvolatile offset correction across thermal cycles and long-term operation - reduces need for periodic recalibration in sealed instrumentation enclosures. | Use Scenario: Setting proportional gain in analog PID loops of PLC I/O modules or motor drive feedback stages. IC Role / Device Role / Timing Role: Configures closed-loop gain in op-amp-based integrator/differentiator stages where precise, repeatable analog scaling is required. Use Value: Supports multiple preset gain configurations stored in nonvolatile memory - allows runtime switching between process modes (e.g., high-speed vs. high-precision) without hardware change. |
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, ±30% RTOL, 2.7–5.5V | Supports dual independent pots and higher resolution but lacks nonvolatile memory - requires external MCU to restore settings after power loss | Select when multi-channel trimming or finer resolution is needed and system firmware can manage volatile wiper state |
| MCP41010-I/P | SPITM interface, single-channel, 256-tap, 10kΩ, ±20% RTOL, 2.7–5.5V, volatile wiper only | No nonvolatile storage; requires continuous SPI command stream to retain position; lower cost but adds MCU dependency | Choose for cost-sensitive designs where power cycling is infrequent or wiper position is managed entirely by host controller |
Compared with AD5243BRMZ10 and MCP41010-I/P, the X9315USZ-2.7 uniquely combines 32-tap precision, guaranteed nonvolatile recall, ultra-low 5µA standby current, and minimal 3-wire GPIO interface - making it optimal for standalone analog trimming where reliability, simplicity, and zero-firmware overhead are prioritized over resolution or multi-channel capability.
Availability
X9315USZ-2.7 is available at Aetrix Electronics and suitable for audio signal conditioning, power supply feedback networks, sensor calibration circuits, and industrial process controller gain stages requiring stable component supply and long-term parameter retention.
Supply support for X9315USZ-2.7 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
Intersil Corporation (now part of Renesas Electronics) is a semiconductor design and manufacturing company specializing in precision analog, power management, and interface ICs for industrial, computing, and communications markets.
The X9315 product line was designed as a family of digitally controlled potentiometers to replace electromechanical trimmers in applications demanding long-term stability, programmability, and nonvolatile setting retention - particularly in space-constrained commercial and industrial systems.
FAQ
What is the maximum wiper current rating for the X9315USZ-2.7?
The X9315USZ-2.7 has a maximum wiper current rating of ±3.75mA under recommended operating conditions. This limit ensures safe operation without exceeding the 10mW maximum power rating or causing irreversible resistance drift. Exceeding this current may degrade wiper resistance stability or accelerate wear in the internal switching network. The device's 400–1000Ω wiper resistance at 2.7V further constrains usable current in low-voltage applications.
Does the X9315USZ-2.7 require an external clock or microcontroller to operate?
No, the X9315USZ-2.7 operates autonomously using only three GPIO lines (CS, U/D, INC) and requires no external clock source or microcontroller firmware. Its internal 5-bit counter and decoder respond directly to negative-edge-triggered INC pulses and U/D logic level. A microcontroller is optional for automation but not mandatory - manual push-button control with debounced switches is fully supported.
Can the X9315USZ-2.7 be used in a two-terminal variable resistor configuration?
Yes, the X9315USZ-2.7 supports both three-terminal potentiometer and two-terminal variable resistor configurations. In two-terminal mode, connect either RH/VH or RL/VL to RW/VW and leave the unused terminal unconnected or tied to a fixed potential. This configuration maintains the same 32-step resolution and nonvolatile storage, enabling use in current-setting or gain-control applications where only one adjustable resistance is needed.
What is the temperature coefficient of the total resistance for the X9315USZ-2.7?
The X9315USZ-2.7 has a total resistance temperature coefficient of ±300 ppm/°C and a ratiometric temperature coefficient of ±20 ppm/°C. The ratiometric spec ensures that the voltage division ratio remains stable across temperature - critical for precision sensor interfaces - while the absolute RTOTAL drift is bounded for predictable worst-case resistance variation in bias networks.
How does the nonvolatile store function work on the X9315USZ-2.7?
The X9315USZ-2.7 stores the current wiper position in nonvolatile EEPROM when CS transitions from LOW to HIGH while the INC input is held HIGH. This store operation takes 5–10ms and automatically places the device into 5µA standby mode upon completion. Once stored, the value persists for 100 years and is automatically recalled at next power-up, eliminating the need for initialization code or external memory backup.
X9315USZ-2.7 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:
- 32
- Resistance (Ohms):
- 50k
- Interface:
- Up/Down (U/D, INC, CS)
- Memory Type:
- Non-Volatile
- Voltage - Supply:
- 2.7V ~ 5.5V
- 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):
- 400
X9315USZ-2.7 FAQ
1.How can I place an order for X9315USZ-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for X9315USZ-2.7 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 X9315USZ-2.7 reliable?
The price and inventory of X9315USZ-2.7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for X9315USZ-2.7 is usually 5 days.
3.What payment methods are accepted for X9315USZ-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X9315USZ-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X9315USZ-2.7?
X9315USZ-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X9315USZ-2.7 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 X9315USZ-2.7?
For technical support, including X9315USZ-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X9315USZ-2.7 requirements.
6.How does Aetrix verify that X9315USZ-2.7 is sourced from the original manufacturer or authorized distributors?
All X9315USZ-2.7 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 X9315USZ-2.7 meets industry standards.
7.What is the process for return or replacement of X9315USZ-2.7?
All X9315USZ-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with X9315USZ-2.7, 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 X9315USZ-2.7 part is unused and in its original packaging.
Return procedure for X9315USZ-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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