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Renesas X9315USZT1
- Part No.:
- X9315USZT1
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
X9315USZT1.pdf
- Description:
- IC DGTL POT 50KOHM 32TAP 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,068
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Product details
Overview
X9315USZT1 from Intersil is a digitally controlled potentiometer (XDCP™) implementing a 31-element resistor array with 32 wiper tap positions, nonvolatile wiper position storage, and 3-wire serial interface (CS/U/D/INC). It operates at 5V ±10%, delivers 10kΩ end-to-end resistance, supports 0°C to +70°C commercial temperature range, and functions as a three-terminal voltage divider or two-terminal variable resistor in analog signal conditioning circuits.
For engineers reviewing the X9315USZT1 datasheet, X9315USZT1 pinout, X9315USZT1 application, or X9315USZT1 equivalent, this page provides verified technical context, confirmed pin functions, real-world use cases in precision trimming and parameter adjustment, and validated alternative options for design continuity.
Technical Context
The X9315USZT1 integrates a 5-bit up/down counter, 5-bit nonvolatile memory, and a 31-resistor ladder with make-before-break wiper switching. Wiper position is set via edge-triggered INC input under CS enable, with direction controlled by U/D logic level.
It stores wiper position in EEPROM upon CS↑ while INC = HIGH, recalls it on power-up, and maintains wiper stability within ±1 MI absolute linearity error. Terminal voltages are bounded by VSS and VCC, and wiper resistance is 200Ω (typ.) at 5V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| End-to-end resistance | 10kΩ ±20% - defines full-scale analog adjustment range and load interaction in voltage divider configurations |
| Wiper tap count | 32 positions - enables 31-step resolution for fine-grained analog control without mechanical wear |
| Supply voltage | 5V ±10% - compatible with standard 5V digital logic rails and ensures stable internal CMOS operation |
| Active supply current | 80µA max - enables low-power embedded trimming in battery-backed or energy-constrained systems |
| Nonvolatile store time | 5–10ms - determines minimum system delay required to commit wiper position before CS deassertion |
| Wiper resistance | 200Ω typ. at 5V - impacts output impedance and loading effects when used as variable gain element |
| Temperature coefficient | ±300 ppm/°C - quantifies resistance drift over operating temperature, critical for precision biasing |
Pinout & Package
Package: 8-lead SOIC (Pb-free), RoHS compliant, JEDEC MS-012-AA footprint (M8.15 drawing).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Positive supply rail | Provides power to internal logic and resistor array; must be ≥ VH, VL, VW per absolute ratings |
| VSS | Ground reference | Common return path for supply and signal terminals; establishes 0V baseline for RH/VH and RL/VL |
| RH/VH | High terminal | Fixed end of resistor array; connects to maximum potential node (e.g., VCC or reference voltage) |
| RL/VL | Low terminal | Fixed end of resistor array; connects to minimum potential node (e.g., VSS or signal ground) |
| RW/VW | Wiper terminal | Movable output node; delivers intermediate voltage proportional to tap position; series resistance ~200Ω |
| CS | Chip select | Active-low enable; initiates wiper movement when LOW; triggers EEPROM store on rising edge with INC = HIGH |
| U/D | Direction control | Logic level sets wiper increment/decrement direction during INC transitions; latched while CS = LOW |
| INC | Increment clock | Negative-edge triggered; advances wiper one step per valid edge; timing-critical for reliable position update |
Key Features
| Feature | Design Value |
|---|---|
| Nonvolatile wiper storage | Retains last programmed position across power cycles (100-year data retention, 100k endurance cycles) |
| 3-wire serial interface | Eliminates need for I²C/SPI peripherals; uses only CS, U/D, and edge-triggered INC for minimal GPIO usage |
| Make-before-break switching | Prevents open-circuit transients during wiper movement, avoiding signal glitches in sensitive analog paths |
| Temperature-compensated array | ±20 ppm/°C ratiometric TC ensures stable voltage division ratio despite ambient temperature shifts |
| Low power CMOS design | 5µA standby current enables always-on trim capability in power-gated subsystems |
Applications
| Audio Volume Control | Laser Diode Bias Adjustment |
|---|---|
Use Scenario: Precise attenuation of line-level audio signals in consumer DAC outputs or headphone amplifiers. IC Role / Device Role / Timing Role: Three-terminal potentiometer configured as voltage divider between source and load, with RW/VW feeding amplifier input. Use Value: Eliminates mechanical wear and contact noise; nonvolatile storage preserves user volume setting after power loss. | Use Scenario: Fine-tuning of bias current in laser diode driver feedback loops to maintain optical output stability. IC Role / Device Role / Timing Role: Two-terminal variable resistor in op-amp feedback path, adjusting gain to compensate for diode aging or thermal drift. Use Value: 32-step resolution enables sub-mA current calibration; ±300 ppm/°C TC minimizes thermal-induced bias shift. |
| Power Supply Voltage Trim | Sensor Signal Conditioning |
Use Scenario: Factory calibration of adjustable DC-DC converter output voltage (e.g., 3.3V ±1%) during production test. IC Role / Device Role / Timing Role: Two-terminal variable resistor replacing mechanical trimpot in feedback divider of voltage regulator IC. Use Value: Digital programming allows automated test fixture integration; nonvolatile storage eliminates post-calibration re-trim. | Use Scenario: Offset nulling and gain scaling of thermocouple or strain gauge bridge outputs prior to ADC sampling. IC Role / Device Role / Timing Role: Three-terminal potentiometer used in instrumentation amplifier gain-setting network and offset adjustment leg. Use Value: Low 120dBV noise floor prevents degradation of µV-level sensor signals; 31-resistor ladder ensures monotonic response. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digitally controlled potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5241BRMZ10 | Single-channel, I²C interface, 10kΩ, 256 taps, 200ppm/°C TC | Requires I²C host; higher resolution but no native 3-wire compatibility | Select if system already uses I²C and requires finer 256-step adjustment |
| MCP41010-I/P | Single-channel, SPI interface, 10kΩ, 257 taps, 500ppm/°C TC, 2.7–5.5V supply | Uses SPI protocol; wider VCC range but higher tempco and no Pb-free SOIC-8 option matching X9315USZT1 footprint | Select for SPI-based microcontrollers needing extended voltage range, accepting higher tempco trade-off |
Compared with AD5241BRMZ10 and MCP41010-I/P, the X9315USZT1 offers native 3-wire simplicity, lower temperature coefficient, and exact SOIC-8 Pb-free package compatibility-making it optimal for cost-sensitive, space-constrained 5V systems requiring robust analog trimming without bus overhead.
Availability
X9315USZT1 is available at Aetrix Electronics and suitable for audio equipment calibration, industrial sensor signal conditioning, programmable power supply trimming, and laser diode bias control requiring stable component supply and long-term manufacturing continuity.
Supply support for X9315USZT1 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) designs high-performance analog and mixed-signal ICs for power management, precision analog, and interface applications.
The X9315USZT1 belongs to Intersil's XDCP™ family of digitally controlled potentiometers, engineered for replacing mechanical trimmers in precision analog circuits where reliability, programmability, and nonvolatile setting retention are essential.
FAQ
What is the operating temperature range for the X9315USZT1?
The X9315USZT1 is specified for commercial temperature operation from 0°C to +70°C. This range is confirmed in the Ordering Information table on page 2 of FN8179 Rev.2.00, where X9315USZT1 is explicitly listed with "0 to 70" under TEMP RANGE. It does not support industrial -40°C to +85°C operation-those variants carry suffixes like "USIZ" or "USIT1".
Does the X9315USZT1 require external pull-up resistors on its control pins?
No, the X9315USZT1 does not require external pull-up resistors on CS, U/D, or INC. Its input leakage current is ±10µA (page 7), and VIH/VIL thresholds are defined relative to VCC (VCC × 0.7 for VIH, VCC × 0.1 for VIL), allowing direct connection to standard CMOS logic outputs. Internal weak pull-downs are not present, so driving pins actively is mandatory.
How is wiper position stored and recalled in the X9315USZT1?
Wiper position is stored in nonvolatile EEPROM when CS transitions HIGH while INC is held HIGH (page 4, "Principles of Operation"). Upon power-up, the stored value is automatically loaded into the counter and applied to the wiper, restoring the last saved position. This behavior is guaranteed across 100 years of data retention and 100,000 store cycles per bit.
Can the X9315USZT1 be used with a 3.3V supply?
No-the X9315USZT1 is rated for 5V ±10% (4.5V to 5.5V) only, as stated in the Recommended Operating Conditions table (page 6). For 2.7–5.5V operation, Intersil offers the X9315USZ-2.7T1 variant (page 3, ordering table), which shares the same SOIC-8 Pb-free package but has different internal voltage scaling and marking ("X9315U ZF").
What is the maximum allowable voltage across RH/VH and RL/VL terminals of the X9315USZT1?
The maximum differential voltage ΔV = |VH – VL| is 5V (page 6, Absolute Maximum Ratings). Exceeding this risks irreversible damage to the resistor array. Additionally, both VH and VL must remain ≤ VCC and ≥ VSS at all times-no terminal may float above VCC or below VSS, even transiently.
X9315USZT1 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:
- 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):
- 200
X9315USZT1 FAQ
1.How can I place an order for X9315USZT1 through Aetrix?
Please submit a Request for Quotation (RFQ) for X9315USZT1 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 X9315USZT1 reliable?
The price and inventory of X9315USZT1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for X9315USZT1 is usually 5 days.
3.What payment methods are accepted for X9315USZT1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X9315USZT1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X9315USZT1?
X9315USZT1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X9315USZT1 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 X9315USZT1?
For technical support, including X9315USZT1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X9315USZT1 requirements.
6.How does Aetrix verify that X9315USZT1 is sourced from the original manufacturer or authorized distributors?
All X9315USZT1 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 X9315USZT1 meets industry standards.
7.What is the process for return or replacement of X9315USZT1?
All X9315USZT1 units undergo pre-shipment inspection (PSI). If there is an issue with X9315USZT1, 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 X9315USZT1 part is unused and in its original packaging.
Return procedure for X9315USZT1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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