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Renesas X9015UM8I-2.7
- Part No.:
- X9015UM8I-2.7
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
X9015UM8I-2.7.pdf
- Description:
- IC DGTL POT 50KOHM 32TAP 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,032
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Product details
Overview
X9015UM8I-2.7 from Intersil is a volatile, digitally controlled potentiometer with 32-tap resolution, 50 kΩ end-to-end resistance, and 2.7V–5.5V supply operation. It implements a three-wire up/down serial interface (CS, INC, U/D), features 1 µA standby current, and powers up at Tap #15 for analog trimming in precision voltage dividers and gain-setting circuits.
For engineers reviewing the X9015UM8I-2.7 datasheet, X9015UM8I-2.7 pinout, X9015UM8I-2.7 application, or X9015UM8I-2.7 equivalent, this device serves as a low-noise (–120 dBV), low-power (50 µA active) digital potentiometer optimized for industrial temperature range (–40°C to +85°C) analog calibration tasks requiring stable wiper positioning and make-before-break switching.
Technical Context
The X9015UM8I-2.7 integrates a 5-bit up/down counter, decoder logic, and a 31-resistor string array to select one of 32 wiper positions. Its control architecture relies on edge-triggered INC input and level-sensitive U/D direction control, with CS enabling selection and standby mode entry.
Operation is volatile: wiper position resets to Tap #15 at power-up. The resistor array exhibits ±300 ppm/°C total resistance temperature coefficient and ±20 ppm/°C ratiometric coefficient, supporting stable analog scaling across temperature. Wiper resistance is 400–1000 Ω at 2.7 V, with 1–5 µs INC-to-VW response time.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| End-to-End Resistance | 50 kΩ ±20% - defines full-scale analog range and sets minimum load impedance for voltage divider use |
| Supply Voltage Range | 2.7 V to 5.5 V - enables direct compatibility with 3.3 V and 5 V systems without level-shifting |
| Active Supply Current | 50 µA max - supports battery-powered or ultra-low-power analog calibration subsystems |
| Standby Current | 1 µA max - allows extended sleep periods between trim adjustments without significant leakage |
| Wiper Resistance | 400–1000 Ω at 2.7 V - impacts signal integrity in high-impedance feedback paths and noise coupling |
| Resolution & Linearity | 3% typical resolution; ±1 MI absolute linearity - ensures predictable stepwise analog output with bounded error per tap |
| Temperature Range | –40°C to +85°C - qualified for industrial-grade embedded control and sensor conditioning applications |
Pinout & Package
Package: 8-lead MSOP (M8.118), RoHS-compliant, 3.0 mm × 3.0 mm body, 0.65 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Positive supply input | Power rail for internal logic and resistor array; must be ≥ VH, VL, VW per absolute rating |
| CS | Chip select input | Active-low enable; HIGH places device in standby (1 µA), LOW enables INC/U/D control |
| INC | Increment clock input | Negative-edge triggered; toggling moves wiper up/down based on U/D state |
| U/D | Direction control input | Logic level determines whether INC decrements (LOW) or increments (HIGH) wiper position |
| RH/VH | High terminal | Fixed end of resistor string; voltage range = 0 V to VCC; not polarity-fixed relative to ground |
| VSS | Ground reference | Return path for supply and signal; required for proper biasing of internal switches and counter |
| RL/VL | Low terminal | Opposite fixed end; forms full resistor string with RH/VH; referenced to VSS but not necessarily at 0 V |
| RW/VW | Wiper output | Movable tap point; series resistance 400–1000 Ω at 2.7 V; settles within 5 µs after power-up |
Key Features
| Feature | Design Value |
|---|---|
| Three-wire serial interface | Eliminates need for I²C/SPI peripherals; uses only GPIOs for simple microcontroller integration |
| Make-before-break wiper switching | Prevents open-circuit transients during tap changes-critical for stable op-amp feedback loops |
| Volatile memory architecture | Removes EEPROM wear-out concerns and write-cycle delays; ideal for dynamic real-time trimming |
| Low 1 µA standby current | Enables always-on analog subsystems with minimal quiescent drain-e.g., sensor offset correction in sleep mode |
| Industrial temperature qualification | Validated operation from –40°C to +85°C supports deployment in motor drives, PLC I/O, and outdoor instrumentation |
Applications
| Audio Signal Level Control | Voltage Reference Trimming |
|---|---|
Use Scenario: Adjusting gain or volume in analog audio paths of professional mixers or portable amplifiers where mechanical pot wear and noise are unacceptable. IC Role / Device Role / Timing Role: Acts as a digitally addressed variable resistor in an op-amp non-inverting gain stage, replacing mechanical trimmers. Use Value: Delivers –120 dBV low-noise performance and 32-step repeatability, eliminating scratch noise and drift over time while supporting remote firmware-based calibration. | Use Scenario: Fine-tuning output voltage of adjustable LDOs or bandgap references in industrial power modules requiring long-term stability. IC Role / Device Role / Timing Role: Configures feedback divider ratio in a voltage regulator IC (e.g., LM317) to set precise output voltage under microcontroller control. Use Value: Enables factory or field calibration via serial command without soldering; ±1 MI absolute linearity ensures <0.1% output error across full adjustment range. |
| Sensor Offset Compensation | Programmable Gain Amplifier Scaling |
Use Scenario: Nulling thermal or process-induced DC offset in bridge-based pressure or temperature sensors before ADC digitization. IC Role / Device Role / Timing Role: Forms part of a two-terminal variable resistor configuration in the sensor's excitation or signal path to cancel common-mode error. Use Value: 50 kΩ RTOTAL and ±300 ppm/°C TC support wide-temperature compensation without recalibration; 1 µA standby preserves system power budget. | Use Scenario: Setting programmable gain in instrumentation amplifiers used in data acquisition systems for multi-range signal conditioning. IC Role / Device Role / Timing Role: Serves as the gain-setting resistor in the feedback network of an op-amp configured as a programmable gain amplifier (PGA). Use Value: 32-tap resolution provides discrete gain steps (e.g., 1×, 2×, 5×, 10×); make-before-break switching prevents gain glitches during reconfiguration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digitally controlled potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5175BRMZ-50 | Nonvolatile EEPROM storage; I²C interface; 64 taps; 50 kΩ; 2.7–5.5 V | Retains wiper position after power cycle; requires I²C master instead of GPIO-driven up/down | Choose when persistent settings are mandatory and I²C infrastructure exists. |
| MCP41050-I/P | Volatile; SPI interface; 257 taps; 50 kΩ; 2.7–5.5 V; 100 µA active current | Higher resolution but higher power draw; SPI protocol adds software overhead vs. simple edge-triggered INC | Choose when finer granularity (≈0.4% per step) outweighs 2× higher active current and SPI complexity. |
Compared with X9015UM8I-2.7, AD5175BRMZ-50 offers nonvolatility at the cost of interface complexity and potential EEPROM endurance limits, while MCP41050-I/P trades lower power and simpler control for reduced resolution density and higher active current-making X9015UM8I-2.7 optimal for low-power, GPIO-constrained industrial trimming where volatility is acceptable.
Availability
X9015UM8I-2.7 is available at Aetrix Electronics and suitable for industrial sensor conditioning, programmable power supply calibration, and embedded analog front-end trimming requiring stable component supply across extended temperature ranges.
Supply support for X9015UM8I-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 is a precision analog and power management semiconductor provider, now part of Renesas Electronics, delivering high-reliability solutions for industrial, infrastructure, and computing markets.
The X9015 product line was designed specifically for low-noise, low-power digital trimming of analog circuits-targeting applications where mechanical potentiometers fail due to wear, vibration, or environmental exposure.
FAQ
What is the default wiper position of the X9015UM8I-2.7 at power-up?
The X9015UM8I-2.7 powers up with the wiper at Tap #15, regardless of prior state. This deterministic reset behavior ensures repeatable startup conditions in analog calibration circuits. Because the device is volatile, no stored value persists across power cycles-Tap #15 is hardwired as the initial position by internal logic upon VCC stabilization, verified in the FN8157 datasheet Section "Principles Of Operation".
Does the X9015UM8I-2.7 support true bidirectional communication or only up/down control?
The X9015UM8I-2.7 does not support readback or status reporting-it implements unidirectional, command-only control via its three-wire interface (CS, INC, U/D). The host system must track wiper position in firmware since the device provides no feedback. This design reduces pin count and complexity but requires external position management, confirmed in the "Instructions and Programming" section of the FN8157 datasheet.
Can the X9015UM8I-2.7 be used in a two-terminal variable resistor configuration?
Yes, the X9015UM8I-2.7 supports both three-terminal potentiometer and two-terminal variable resistor configurations. In two-terminal mode, RH/VH and RW/VW (or RL/VL and RW/VW) form the adjustable resistance path. Datasheet Figure 9 ("Basic Configurations") explicitly shows this usage, and the pin descriptions confirm RH/VH and RL/VL serve as fixed terminals independent of wiper movement direction.
What is the maximum wiper current rating for the X9015UM8I-2.7 at 2.7 V supply?
The X9015UM8I-2.7 specifies a maximum wiper current (IW) of ±3.75 mA across all operating conditions, including at 2.7 V supply. This rating is absolute and applies regardless of VCC level; exceeding it risks irreversible damage to internal transfer gates. The value is listed in the "Potentiometer Specifications" table on page 4 of FN8157 Rev 6.00 under parameter "IW".
Is the X9015UM8I-2.7 pin-compatible with other members of the X9015 family in MSOP packages?
Yes, the X9015UM8I-2.7 shares identical pinout and MSOP-8 (M8.118) package dimensions with all X9015 variants in the same package, including X9015UM8Z and X9015UM8IZ. Pin functions (VCC, CS, INC, U/D, RH/VH, VSS, RL/VL, RW/VW) and physical layout are fully consistent, enabling drop-in substitution where voltage and temperature requirements align-confirmed by the unified "Pin Descriptions" and "Package Outline Drawing M8.118" sections in FN8157.
X9015UM8I-2.7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- XDCP™
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Bulk
- 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:
- 2.7V ~ 5.5V
- Features:
- -
- Tolerance:
- ±20%
- Temperature Coefficient (Typ):
- ±300ppm/°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 8-MSOP
- Operating Temperature:
- -40°C ~ 85°C
- Resistance - Wiper (Ohms) (Typ):
- 400
X9015UM8I-2.7 FAQ
1.How can I place an order for X9015UM8I-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for X9015UM8I-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 X9015UM8I-2.7 reliable?
The price and inventory of X9015UM8I-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 X9015UM8I-2.7 is usually 5 days.
3.What payment methods are accepted for X9015UM8I-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X9015UM8I-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X9015UM8I-2.7?
X9015UM8I-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X9015UM8I-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 X9015UM8I-2.7?
For technical support, including X9015UM8I-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X9015UM8I-2.7 requirements.
6.How does Aetrix verify that X9015UM8I-2.7 is sourced from the original manufacturer or authorized distributors?
All X9015UM8I-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 X9015UM8I-2.7 meets industry standards.
7.What is the process for return or replacement of X9015UM8I-2.7?
All X9015UM8I-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with X9015UM8I-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 X9015UM8I-2.7 part is unused and in its original packaging.
Return procedure for X9015UM8I-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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