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Renesas X9313USM
- Part No.:
- X9313USM
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
X9313USM.pdf
- Description:
- IC DGTL POT 50KOHM 32TAP 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,179
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Product details
Overview
X9313USM from Intersil is a digitally controlled potentiometer (XDCP™) implementing a 32-tap linear resistor array with nonvolatile wiper position storage, 3-wire serial interface (CS/U/D/INC), ±VCC terminal voltage range, and 10kΩ end-to-end resistance - used for precision analog trimming in voltage regulator feedback loops, sensor calibration circuits, and programmable gain amplifiers.
For engineers reviewing the X9313USM datasheet, X9313USM pinout, X9313USM application, or X9313USM equivalent, key selection criteria include its 3-wire interface timing (tIW = 5µs, tCPH = 20ms store), industrial temperature range (–40°C to +85°C), SOIC-8 package compatibility, and nonvolatile recall behavior on power-up.
Technical Context
The X9313USM integrates a 31-element resistor ladder, 5-bit up/down counter, nonvolatile memory for wiper position retention, and make-before-break wiper switching logic. Its control architecture uses edge-triggered INC with level-sensitive U/D to determine tap increment/decrement direction, while CS enables selection and initiates nonvolatile store when transitioned high with INC high.
Operation supports both three-terminal potentiometer (RH/VH–RW/VW–RL/VL) and two-terminal variable resistor configurations. Wiper resistance is 40Ω typical at VCC = 5V, and terminal voltage tolerance spans –VCC to +VCC, enabling bipolar signal handling in op-amp and comparator applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| End-to-end resistance | 10kΩ ±20% - defines full-scale adjustment range and sets minimum load impedance for stable divider operation |
| Wiper positions | 32 discrete taps - provides 3.125% resolution per step (1/31 increment) for fine analog parameter control |
| Supply voltage | 4.5V to 5.5V - compatible with standard 5V logic systems and ensures stable internal CMOS operation |
| Nonvolatile store time | 20ms (tCPH) - requires sustained CS high + INC high for reliable EEPROM write; impacts system firmware timing design |
| Wiper resistance | 40Ω typical at VCC = 5V - contributes directly to output impedance error in low-impedance feedback paths |
| Operating temperature | –40°C to +85°C - validated for industrial-grade embedded systems including motor drives and PLC I/O modules |
| Active supply current | 3mA max - determines quiescent power budget in always-on analog subsystems |
Pinout & Package
Package: 8-lead SOIC (Small Outline Integrated Circuit), Pb-free, RoHS compliant, JEDEC MS-012-AA compliant outline (M8.15).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Positive supply rail | Provides power to internal logic and resistor array; must be stabilized before CS activation to prevent spurious wiper movement |
| VSS | Ground reference | Common return path for all digital inputs and analog terminals; requires low-impedance connection to minimize noise coupling |
| RH/VH | High terminal | Fixed end of resistor array; functions as top rail in voltage divider or high-side node in variable resistor mode |
| RL/VL | Low terminal | Fixed end of resistor array; serves as bottom rail in divider or low-side node; polarity relative to wiper depends on U/D state |
| RW/VW | Wiper terminal | Movable contact point; outputs intermediate voltage or resistance; series resistance adds 40Ω error in precision gain-setting applications |
| CS | Chip select | Active-low enable; initiates wiper update when low, triggers nonvolatile store on rising edge if INC is high |
| U/D | Direction control | Level-sensitive input determining whether INC transitions increment (U/D = high) or decrement (U/D = low) the wiper position |
| INC | Increment clock | Negative-edge triggered; each falling edge moves wiper one tap; timing critical (tIL/tIH ≥ 1µs) for reliable position updates |
Key Features
| Feature | Design Value |
|---|---|
| Nonvolatile wiper storage | Retains last-set position across power cycles (100-year data retention), eliminating need for boot-time reinitialization in field-deployed equipment |
| 3-wire serial interface | Uses only CS, U/D, and INC signals - reduces MCU GPIO count and eliminates need for SPI/I²C peripherals in resource-constrained microcontrollers |
| Make-before-break switching | Prevents open-circuit transients during wiper movement, avoiding momentary signal interruption in sensitive analog feedback paths |
| ±VCC terminal voltage range | Supports bipolar operation (e.g., ±5V rails) without external level-shifting, enabling direct use in dual-supply op-amp circuits |
| Temperature-compensated array | ±300 ppm/°C RTOTAL drift - maintains consistent taper accuracy over industrial temperature range, critical for sensor offset trimming |
Applications
| Programmable Voltage Reference | DC-DC Converter Feedback Trim |
|---|---|
Use Scenario: Setting precise reference voltage for ADCs or comparators in data acquisition systems. IC Role / Device Role / Timing Role: Three-terminal potentiometer configured as adjustable voltage divider between +5V and GND, with VW output feeding reference input. Use Value: Enables factory calibration and field recalibration without hardware changes; nonvolatile storage preserves user-adjusted setpoints after power loss. | Use Scenario: Fine-tuning output voltage of isolated DC-DC converters via feedback resistor network. IC Role / Device Role / Timing Role: Two-terminal variable resistor replacing lower feedback resistor (RFB2) in TL431-based feedback loop. Use Value: Allows remote software-controlled output voltage adjustment; 10kΩ value matches common feedback divider impedances while minimizing load error. |
| Sensor Offset Compensation | Audio Channel Balance Control |
Use Scenario: Nulling thermal drift in bridge-based pressure or temperature sensors. IC Role / Device Role / Timing Role: Two-terminal configuration in Wheatstone bridge leg, adjusting null point to cancel ambient-temperature-induced offset. Use Value: Compensates for ±300 ppm/°C resistor drift; 32-tap resolution achieves <1mV nulling precision in 5V full-scale bridges. | Use Scenario: Matching left/right channel gain in professional audio mixers with digital control. IC Role / Device Role / Timing Role: Dual X9313USM devices (one per channel) configured as voltage dividers driving op-amp non-inverting inputs. Use Value: Eliminates mechanical pot wear and channel mismatch; 3-wire interface allows synchronized adjustment from single MCU port. |
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, ±20% tolerance | Requires I²C master; higher resolution but no nonvolatile store on power-up | Select when multi-channel coordination or finer adjustment granularity is required, and system already uses I²C |
| MCP41010-I/P | SPI interface, single-channel, 257-tap resolution, 10kΩ, ±20% tolerance, volatile wiper register | No nonvolatile memory; wiper resets to mid-scale on power-up unless host reloads value | Choose for cost-sensitive designs where host MCU can manage initialization and storage externally |
Compared with AD5243BRMZ10 and MCP41010-I/P, the X9313USM offers deterministic power-up behavior without host intervention, simpler 3-wire control (no address or command bytes), and guaranteed wiper position retention - making it optimal for standalone analog subsystems lacking persistent firmware control.
Availability
X9313USM is available at Aetrix Electronics and suitable for industrial motor control, sensor signal conditioning, and programmable power supply applications requiring stable component supply across extended product lifecycles.
Supply support for X9313USM 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 is a precision analog and power management semiconductor provider, now part of Renesas Electronics, with deep expertise in high-reliability industrial and infrastructure solutions.
The X9313USM belongs to Intersil's XDCP™ (Digitally Controlled Potentiometer) family, designed specifically for replacing mechanical trimmers in environments demanding long-term stability, shock/vibration immunity, and programmable recalibration.
FAQ
What is the maximum allowable voltage across RH/VH and RL/VL terminals for X9313USM?
The X9313USM supports ΔV = |VH − VL| up to 10V, as specified for X9313W/U variants in the Absolute Maximum Ratings table. This rating enables safe operation in 5V, ±5V, and 10V single-supply analog systems without external clamping. Exceeding 10V risks permanent damage to the internal resistor array switches.
Does X9313USM retain its wiper position after power cycling?
Yes, X9313USM stores the wiper position in nonvolatile memory and automatically recalls it on power-up. This behavior is guaranteed by design: the last stored value persists for 100 years and restores within 10µs (tPU) after VCC stabilizes. No external controller action is needed to reestablish the prior setting.
Can X9313USM operate with a 3.3V supply voltage?
No, X9313USM is rated for 4.5V to 5.5V supply only. The ordering information explicitly lists VCC range as 4.5–5.5V for X9313USM. For 3.3V operation, consider the X9313USZ-3 variant (3V to 5.5V), which shares identical functionality and pinout but is characterized for lower VCC.
What is the wiper resistance specification for X9313USM and how does it affect circuit performance?
X9313USM specifies wiper resistance RW as 40Ω typical at VCC = 5V (max 100Ω). This series resistance introduces gain error in op-amp feedback networks and voltage division inaccuracies below ~1kΩ total resistance. Designers must account for it in precision applications - e.g., a 10kΩ divider yields ~0.4% error, while a 1kΩ divider incurs ~4% error.
How does the X9313USM 3-wire interface differ from standard SPI or I²C protocols?
The X9313USM uses a proprietary 3-wire interface (CS/U/D/INC) with no clock line, command bytes, or addressing. It operates as a synchronous up/down counter: U/D sets direction, and each negative edge on INC moves the wiper one tap. Unlike SPI/I²C, it requires no data framing, ACK/NACK, or bus arbitration - reducing MCU overhead and PCB routing complexity.
X9313USM 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:
- 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
X9313USM FAQ
1.How can I place an order for X9313USM through Aetrix?
Please submit a Request for Quotation (RFQ) for X9313USM 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 X9313USM reliable?
The price and inventory of X9313USM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for X9313USM is usually 5 days.
3.What payment methods are accepted for X9313USM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X9313USM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X9313USM?
X9313USM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X9313USM 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 X9313USM?
For technical support, including X9313USM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X9313USM requirements.
6.How does Aetrix verify that X9313USM is sourced from the original manufacturer or authorized distributors?
All X9313USM 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 X9313USM meets industry standards.
7.What is the process for return or replacement of X9313USM?
All X9313USM units undergo pre-shipment inspection (PSI). If there is an issue with X9313USM, 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 X9313USM part is unused and in its original packaging.
Return procedure for X9313USM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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