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Renesas X9015US8
- Part No.:
- X9015US8
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
X9015US8.pdf
- Description:
- IC DGTL POT 50KOHM 32TAP 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,490
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Product details
Overview
X9015US8 from Intersil is a volatile, low-noise, digitally controlled potentiometer with 32-tap resolution, 10kΩ end-to-end resistance, and 3-wire up/down serial interface. It operates from 2.7V to 5.5V, draws ≤50µA active current, and powers up at Tap #15 - used for precision analog trimming in voltage reference and op-amp gain-setting circuits.
For engineers reviewing the X9015US8 datasheet, X9015US8 pinout, X9015US8 application, or X9015US8 equivalent, this page delivers verified electrical parameters, SOIC-8 package mapping, wiper resistance behavior at 2.7V/5V, standby current compliance, and real-world use cases in programmable biasing and ratiometric sensor conditioning.
Technical Context
The X9015US8 implements a 5-bit up/down counter driving a 31-resistor string with make-before-break electronic switches. Wiper position is updated on falling edges of the INC input, direction determined by U/D logic level, and device selection controlled via active-low CS.
It features volatile memory (no EEPROM), power-up default to Tap #15, and wiper resistance of 200–400Ω at VCC = 5V (400–1000Ω at 2.7V). Absolute linearity is ±1 MI (minimum increment), relative linearity ±0.2 MI, and RTOTAL temperature coefficient is ±300 ppm/°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| End-to-End Resistance | 10kΩ ±20% - sets full-scale analog range for voltage divider or variable resistor configurations. |
| Supply Voltage Range | 2.7V to 5.5V - supports single-supply operation across industrial and consumer rails without level-shifting. |
| Active Supply Current | ≤50µA max - enables battery-powered or ultra-low-power trimming applications without significant quiescent load. |
| Standby Current | ≤1µA max - achieved when CS is high and INC/U/D held at valid logic levels; critical for energy-sensitive systems. |
| Wiper Resistance | 200–400Ω at 5V; 400–1000Ω at 2.7V - directly impacts signal integrity in high-impedance feedback paths. |
| Linearity Error | Absolute ±1 MI, Relative ±0.2 MI - ensures predictable stepwise voltage division across all 32 taps. |
| Power-Up State | Tap #15 (midpoint) - guarantees known initial analog output without host initialization sequence. |
Pinout & Package
Package: 8-lead narrow-body SOIC (JEDEC MS-012-AA compliant, outline M8.15), RoHS-compliant matte tin finish, 1.27mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: RH/VH | High-side fixed terminal | Connects to VCC or maximum analog potential; position relative to wiper depends on U/D state, not voltage polarity. |
| 2: CS | Chip select input | Active-low enable; when high, device enters standby mode (≤1µA ICC); must be low to accept INC/U/D commands. |
| 3: INC | Increment control input | Falling-edge triggered; toggling moves wiper up/down per U/D state; tIW = 1–5µs wiper response delay. |
| 4: U/D | Direction control input | Logic-high = wiper increments toward RH/VH; logic-low = decrements toward RL/VL; sampled synchronously with INC edge. |
| 5: RL/VL | Low-side fixed terminal | Connects to VSS or minimum analog potential; serves as reference node in voltage divider topologies. |
| 6: VSS | Ground reference | Primary return path for supply and signal currents; must be low-impedance to minimize noise coupling into resistor array. |
| 7: VCC | Positive supply | 2.7–5.5V input; powers internal logic and resistor array; VCC ≥ VH, VL, VW required at all times. |
| 8: RW/VW | Wiper output | Analog output node; series resistance 200–400Ω (5V), connects to one of 32 tap points; settles within 5µs after INC edge. |
Key Features
| Feature | Design Value |
|---|---|
| 3-wire up/down interface | No clock or data lines required - simplifies MCU GPIO usage and eliminates protocol overhead in trimming loops. |
| Volatile 32-tap architecture | Enables fast, glitch-free wiper repositioning without write-cycle delays; ideal for dynamic real-time calibration. |
| Make-before-break switching | Prevents open-circuit transients during tap transitions - essential for stable operation in op-amp feedback networks. |
| Low 1µA standby current | Allows integration into always-on subsystems (e.g., sensor front-ends) without compromising system-level power budget. |
| ±300 ppm/°C RTOTAL TC | Ensures stable resistance ratio over temperature - critical for ratiometric measurements and precision reference scaling. |
Applications
| Programmable Voltage Reference | Op-Amp Gain Control |
|---|---|
|
Use Scenario: Setting precise DC output voltage in adjustable LDOs or bandgap references using a microcontroller. IC Role / Device Role / Timing Role: Digitally adjustable resistive divider that defines feedback ratio; no timing constraints beyond INC edge timing. Use Value: Eliminates manual potentiometer replacement; enables factory calibration and field firmware updates to voltage setpoints. |
Use Scenario: Dynamically adjusting closed-loop gain in instrumentation amplifiers or signal-conditioning stages. IC Role / Device Role / Timing Role: Variable feedback resistor in non-inverting amplifier topology; wiper settling <5µs avoids transient overshoot. Use Value: Supports multi-range measurement systems (e.g., auto-ranging DMMs) with consistent gain accuracy across taps. |
| Sensor Offset Compensation | Ratiometric Sensor Scaling |
|
Use Scenario: Nulling thermal or process-induced offset in bridge-based pressure or temperature sensors. IC Role / Device Role / Timing Role: Two-terminal variable resistor in Wheatstone bridge leg; adjusted during power-on self-test. Use Value: Achieves <±1 mV offset correction with 32-step resolution; wiper resistance variation minimized by mid-scale power-up default. |
Use Scenario: Matching ADC reference voltage to sensor excitation voltage in ratiometric systems (e.g., strain gauges). IC Role / Device Role / Timing Role: Precision voltage divider where RH/VH = VEXC and RL/VL = GND; RW/VW feeds ADC reference input. Use Value: Maintains ratiometric accuracy despite VCC drift due to ±20 ppm/°C ratiometric tempco and matched TC behavior. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digitally controlled potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5170BRMZ-10 | Nonvolatile EEPROM storage; I²C interface; 10kΩ; 64-tap resolution; 2.7–5.5V supply. | Retains wiper position through power cycles; requires I²C bus and pull-ups; higher pin count (10-lead MSOP). | Select when persistent settings are mandatory and I²C infrastructure exists; avoid if minimal GPIO and volatile reset behavior are preferred. |
| MCP41010-I/P | Volatile; SPI interface; 10kΩ; 257-tap resolution; 2.7–5.5V; 125µA active current. | Higher resolution but slower update (SPI frame overhead); larger package (8-lead PDIP); no standby mode. | Choose for finer granularity in trimming where SPI is available and µA-level standby is not required. |
Compared with AD5170BRMZ-10 and MCP41010-I/P, the X9015US8 offers the lowest active and standby current, simplest 3-wire control, and guaranteed mid-scale power-up - making it optimal for low-power, GPIO-constrained, and transient-critical analog trimming.
Availability
X9015US8 is available at Aetrix Electronics and suitable for programmable voltage references, op-amp gain control, sensor offset compensation, and ratiometric sensor scaling requiring stable component supply across commercial temperature range (0°C to +70°C).
Supply support for X9015US8 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 legacy expertise in high-reliability industrial and infrastructure solutions.
The X9015 product line was designed for low-power, digitally programmable analog trimming in space-constrained systems - emphasizing simplicity, low ICC, and deterministic power-up behavior over nonvolatility or high resolution.
FAQ
What is the power-up behavior of the X9015US8?
The X9015US8 powers up with its wiper at Tap #15 (midpoint of the 32-tap resistor string), regardless of prior state. This deterministic reset eliminates need for host initialization before first use. The X9015US8 does not retain wiper position across power cycles since it uses volatile register architecture - consistent with its design for dynamic, real-time trimming rather than persistent configuration storage.
Does the X9015US8 support bidirectional communication or only up/down control?
The X9015US8 uses a unidirectional 3-wire up/down interface (CS, INC, U/D) with no readback capability. It does not report current wiper position or status; the host must track tap count in firmware. The X9015US8 relies on edge-triggered INC and level-sensitive U/D signals - no clock or data lines - making it simpler than SPI/I²C potentiometers but requiring external position management.
What is the maximum allowable voltage difference between VH and VL terminals of the X9015US8?
The X9015US8 specifies ΔV = |VH – VL| ≤ 5V as an absolute operating limit. Exceeding this risks damage to internal transfer gates. Additionally, VH and VL must both remain within VSS ≤ (VH, VL) ≤ VCC, and VCC must always be ≥ VH, VL, and VW. These constraints ensure safe operation of the resistor string and CMOS switch matrix inside the X9015US8.
How does wiper resistance vary with supply voltage in the X9015US8?
Wiper resistance in the X9015US8 increases at lower VCC: it is 200–400Ω at VCC = 5V and 400–1000Ω at VCC = 2.7V (measured at IW = 1mA). This variation directly affects loading error in high-impedance circuits - for example, a 100kΩ feedback network may see >0.4% gain error shift when VCC drops from 5V to 2.7V. Designers must account for this in X9015US8-based precision applications.
Is the X9015US8 pin-compatible with other members of the X9015 family?
Yes - the X9015US8 shares identical 8-lead SOIC pinout (M8.15 outline) and signal mapping with X9015WS8ZT1, X9015US8IZ, and X9015US8Z-2.7 variants. Differences are limited to temperature range (0°C to +70°C vs. -40°C to +85°C), supply voltage tolerance (5V ±10% vs. 2.7–5.5V), and RoHS compliance status. All X9015 SOIC variants use the same PCB footprint and electrical interface, enabling drop-in substitution where environmental specs align.
X9015US8 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:
- 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
X9015US8 FAQ
1.How can I place an order for X9015US8 through Aetrix?
Please submit a Request for Quotation (RFQ) for X9015US8 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 X9015US8 reliable?
The price and inventory of X9015US8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for X9015US8 is usually 5 days.
3.What payment methods are accepted for X9015US8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X9015US8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X9015US8?
X9015US8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X9015US8 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 X9015US8?
For technical support, including X9015US8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X9015US8 requirements.
6.How does Aetrix verify that X9015US8 is sourced from the original manufacturer or authorized distributors?
All X9015US8 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 X9015US8 meets industry standards.
7.What is the process for return or replacement of X9015US8?
All X9015US8 units undergo pre-shipment inspection (PSI). If there is an issue with X9015US8, 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 X9015US8 part is unused and in its original packaging.
Return procedure for X9015US8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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