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Renesas X9315UMI-2.7T2
- Part No.:
- X9315UMI-2.7T2
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
X9315UMI-2.7T2.pdf
- Description:
- IC DGTL POT 50KOHM 32TAP 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,912
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Product details
Overview
X9315UMI-2.7T2 from Intersil is a digitally controlled potentiometer (XDCP™) implementing a 31-element resistor array with 32 discrete wiper tap positions, nonvolatile EEPROM storage for power-up recall, 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 industrial temperature range (–40°C to +85°C) in an 8-lead MSOP package. It functions as a solid-state replacement for mechanical potentiometers in precision analog trimming applications.
For engineers reviewing the X9315UMI-2.7T2 datasheet, X9315UMI-2.7T2 pinout, X9315UMI-2.7T2 application, or X9315UMI-2.7T2 equivalent, this page provides verified specifications including wiper resistance (400–1000 Ω at 2.7V), active current (80 µA), standby current (5 µA), absolute linearity (±1 MI), and ratiometric tempco (±20 ppm/°C) - all confirmed for the exact X9315UMI-2.7T2 variant.
Technical Context
The X9315UMI-2.7T2 integrates a 5-bit up/down counter, nonvolatile memory for wiper position retention, and a decoder-driven switching network across 31 resistive elements. Its "make-before-break" wiper switching prevents open-circuit transients during position changes.
Control logic responds to negative-edge-triggered INC pulses while U/D sets direction; CS enables selection and initiates nonvolatile store when raised high with INC high. The device maintains wiper position through power cycles without external backup power.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RTOTAL | 50 kΩ ±20% - defines full-scale resistance range for voltage divider or current-limiting use |
| VCC Range | 2.7 V to 5.5 V - enables direct compatibility with 3.3 V and 5 V systems without level shifting |
| Wiper Resistance | 400–1000 Ω at VCC = 2.7 V - impacts signal integrity and loading in low-voltage analog paths |
| Active Current | 80 µA max - ensures minimal power draw during wiper adjustment in battery-powered systems |
| Standby Current | 5 µA max - supports ultra-low-power sleep modes between adjustments |
| Linearity Error | ±1 MI (Minimum Increment) - guarantees predictable stepwise voltage division across all 32 taps |
| Tempco (Ratiometric) | ±20 ppm/°C - maintains stable voltage division ratio over temperature without calibration |
Pinout & Package
Package: 8-lead MSOP (M8.118), RoHS-compliant, industrial temperature grade (–40°C to +85°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Supply voltage input | Primary power rail; must be ≥ VH, VL, VW; supports 2.7–5.5 V operation |
| VSS | Ground reference | Return path for supply and signal currents; establishes 0 V reference 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 bias point) |
| RW/VW | Wiper terminal | Movable output node; delivers tapped voltage/current; series resistance 400–1000 Ω at 2.7 V |
| CS | Chip Select | Active-low enable; rising edge with INC = HIGH stores wiper position to nonvolatile memory |
| U/D | Up/Down control | Sets wiper movement direction on next INC pulse; logic level sampled synchronously with INC |
| INC | Increment clock | Negative-edge-triggered; advances or retracts wiper one tap per valid transition under CS = LOW |
Key Features
| Feature | Design Value |
|---|---|
| Nonvolatile wiper storage | Retains last-set position across power cycles for repeatable startup behavior without host initialization |
| 3-wire serial interface | Requires only CS, U/D, and INC signals - eliminates I²C/SPI overhead and reduces GPIO count |
| Make-before-break switching | Prevents momentary open-circuit at wiper during tap transitions, avoiding signal dropout in critical paths |
| Temperature-compensated array | ±20 ppm/°C ratiometric tempco ensures stable voltage division ratio despite ambient shifts |
| Industrial temperature rating | –40°C to +85°C operation validated per datasheet - suitable for automotive cabin, industrial PLC, and outdoor equipment |
| Low-power CMOS design | 80 µA active / 5 µA standby current enables integration into energy-constrained embedded systems |
Applications
| Audio Signal Level Control | Laser Diode Bias Adjustment |
|---|---|
|
Use Scenario: Precise volume or gain setting in battery-powered portable audio amplifiers where mechanical pot wear and drift are unacceptable. IC Role / Device Role / Timing Role: Two-terminal variable resistor configuring feedback network of op-amp; no timing function. Use Value: 32-step resolution and ±1 MI linearity ensure consistent channel matching and repeatable user settings across product lifetime. |
Use Scenario: Fine-tuning laser diode bias current in optical transceivers to maintain constant optical output power over temperature. IC Role / Device Role / Timing Role: Three-terminal potentiometer setting reference voltage for current-sense amplifier; no timing function. Use Value: Nonvolatile storage allows factory calibration to persist through field power cycles, eliminating recalibration labor. |
| Power Supply Voltage Trim | Sensor Signal Conditioning |
|
Use Scenario: Adjusting output voltage of programmable DC-DC converters in industrial power modules requiring long-term stability. IC Role / Device Role / Timing Role: Three-terminal potentiometer acting as adjustable feedback divider for voltage regulator error amplifier. Use Value: ±20 ppm/°C ratiometric tempco ensures output voltage remains within spec across –40°C to +85°C without software compensation. |
Use Scenario: Calibrating offset and gain of analog sensor front-ends (e.g., pressure, temperature) in medical instrumentation. IC Role / Device Role / Timing Role: Two-terminal variable resistor in transimpedance or gain-setting network; no timing function. Use Value: 100-year data retention and 100,000-cycle endurance guarantee calibration integrity over full product service life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digitally controlled potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5241BRMZ50 | I²C interface; 64-tap resolution; 100 kΩ max RTOTAL; 2.7–5.5 V supply | Requires I²C bus resources and pull-up resistors; higher resolution but no native nonvolatile store on power-up | Select if system already uses I²C and requires finer granularity; accept added firmware complexity for EEPROM management |
| MCP41050-I/P | SPI interface; 257-tap resolution; 50 kΩ RTOTAL; 2.7–5.5 V; volatile wiper register only | No nonvolatile memory - wiper resets to mid-scale on power-up unless host reloads value | Choose when SPI is preferred and host controller can manage initialization; avoid where unattended power cycling occurs |
Compared with AD5241BRMZ50 and MCP41050-I/P, the X9315UMI-2.7T2 uniquely combines 3-wire simplicity, guaranteed power-up recall, and industrial temperature support in a single MSOP package - eliminating both bus resource contention and host initialization dependencies.
Availability
X9315UMI-2.7T2 is available at Aetrix Electronics and suitable for industrial power supplies, optical transceiver calibration, portable audio systems, and medical sensor conditioning requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for X9315UMI-2.7T2 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 X9315 family was engineered as a drop-in solid-state replacement for mechanical potentiometers in trimming-critical analog circuits, emphasizing reliability, nonvolatile retention, and low-voltage operation.
FAQ
What is the exact end-to-end resistance value and tolerance for X9315UMI-2.7T2?
The X9315UMI-2.7T2 has a nominal end-to-end resistance (RTOTAL) of 50 kΩ with a tolerance of ±20%, as specified in the Intersil FN8179 datasheet ordering table and confirmed in the Potentiometer Characteristics section. This tolerance applies across the full industrial temperature range (–40°C to +85°C) and is measured at VCC = 2.7 V to 5.5 V.
Does X9315UMI-2.7T2 retain its wiper position after power loss?
Yes, the X9315UMI-2.7T2 stores the wiper position in nonvolatile EEPROM memory. Upon power-up, it automatically recalls the last stored value - a feature explicitly guaranteed in the datasheet's Principles of Operation and Power-up and Down Requirements sections. This behavior requires no host intervention or external components.
What is the wiper resistance of X9315UMI-2.7T2 at 2.7 V supply?
At VCC = 2.7 V, the wiper resistance (RW) of the X9315UMI-2.7T2 is specified as 400 Ω (typical) to 1000 Ω (maximum), per the Potentiometer Characteristics table on page 6 of FN8179 Rev. 2.00. This value directly affects loading in low-voltage analog signal paths and must be accounted for in gain and offset calculations.
Can X9315UMI-2.7T2 operate with a 3.3 V supply?
Yes, the X9315UMI-2.7T2 is fully compatible with 3.3 V operation. Its VCC range is explicitly defined as 2.7 V to 5.5 V in the Recommended Operating Conditions table (page 6), and all electrical specifications - including active current (80 µA), standby current (5 µA), and logic thresholds - are validated across this range.
What package type and footprint does X9315UMI-2.7T2 use?
The X9315UMI-2.7T2 uses an 8-lead MSOP package per JEDEC MO-187AA (package drawing M8.118), with body dimensions 3.0 mm × 3.0 mm × 0.85 mm. Pin pitch is 0.65 mm, and the package is RoHS-compliant with matte tin (e3) termination, as confirmed in the Ordering Information table and Package Outline Drawing on page 13.
X9315UMI-2.7T2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- XDCP™
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm 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:
- 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
X9315UMI-2.7T2 FAQ
1.How can I place an order for X9315UMI-2.7T2 through Aetrix?
Please submit a Request for Quotation (RFQ) for X9315UMI-2.7T2 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 X9315UMI-2.7T2 reliable?
The price and inventory of X9315UMI-2.7T2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for X9315UMI-2.7T2 is usually 5 days.
3.What payment methods are accepted for X9315UMI-2.7T2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X9315UMI-2.7T2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X9315UMI-2.7T2?
X9315UMI-2.7T2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X9315UMI-2.7T2 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 X9315UMI-2.7T2?
For technical support, including X9315UMI-2.7T2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X9315UMI-2.7T2 requirements.
6.How does Aetrix verify that X9315UMI-2.7T2 is sourced from the original manufacturer or authorized distributors?
All X9315UMI-2.7T2 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 X9315UMI-2.7T2 meets industry standards.
7.What is the process for return or replacement of X9315UMI-2.7T2?
All X9315UMI-2.7T2 units undergo pre-shipment inspection (PSI). If there is an issue with X9315UMI-2.7T2, 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 X9315UMI-2.7T2 part is unused and in its original packaging.
Return procedure for X9315UMI-2.7T2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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