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Renesas X93256UV14IZ-2.7T1
- Part No.:
- X93256UV14IZ-2.7T1
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
X93256UV14IZ-2.7T1.pdf
- Description:
- IC DGTL POT 50KOHM 32TAP 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,875
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Product details
Overview
X93256UV14IZ-2.7T1 from Intersil is a dual digitally controlled potentiometer (XDCP™) implementing two independent 32-tap, nonvolatile resistor arrays with CMOS Up/Down control interfaces. Each potentiometer offers 50 kΩ end-to-end resistance, ±25% tolerance, and operates from 2.7V to 5.5V supply, enabling precise analog trimming in LCD contrast and bias control circuits.
For engineers reviewing the X93256UV14IZ-2.7T1 datasheet, X93256UV14IZ-2.7T1 pinout, X93256UV14IZ-2.7T1 application, or X93256UV14IZ-2.7T1 equivalent, key selection considerations include nonvolatile wiper position storage, individual CS/U/D/INC control per channel, TSSOP-14 Pb-free packaging, and industrial temperature range support.
Technical Context
The X93256UV14IZ-2.7T1 integrates two independent 5-bit up/down counters driving 31-element resistor arrays, each with dedicated chip select (CS1/CS2), increment (INC1/INC2), and direction (U/D1/U/D2) inputs. Wiper positions are stored in EEPROM and recalled at power-up without external configuration.
Each potentiometer functions as a three-terminal variable resistor with RH/RL fixed terminals and RW wiper terminal. Terminal voltage range spans 0 V to VCC, wiper resistance is 1100 Ω typical, and absolute linearity error is ±1 minimum increment (MI), where MI = RTOTAL/31.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RTOTAL | 50 kΩ - defines full-scale resistance for gain/bias scaling; tolerance ±25% affects absolute accuracy in open-loop trim. |
| Supply Voltage | 2.7 V to 5.5 V - supports single-supply operation across 3.3 V and 5 V systems without level-shifting. |
| Wiper Resolution | 32 positions (5-bit) - provides ~3% step resolution for fine analog adjustment in real-time calibration. |
| Nonvolatile Storage | 100-year data retention, 200,000 write cycles - enables permanent factory or field calibration without backup power. |
| Active Current | 200 µA typical per potentiometer at VCC = 3 V - minimizes system power impact during active trimming. |
| Standby Current | 4 µA max per potentiometer - allows low-power sleep-mode retention without disabling trim state. |
| Temperature Range | –40 °C to +85 °C - qualified for industrial environments including automotive infotainment and industrial HMI panels. |
Pinout & Package
Package: 14-lead TSSOP (4.4 mm body width), Pb-free (RoHS compliant), JEDEC MO-153-AC compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RW1 | Wiper 1 output | Movable terminal of first potentiometer; connects to one of 32 tap points based on U/D1/INC1 sequence. |
| RL1 | Low-side fixed terminal 1 | Fixed end of first resistor array; referenced to VSS; polarity relative to RH1 depends on U/D1 state. |
| CS1 | Chip Select 1 | Active-low enable for first potentiometer; HIGH with INC1 HIGH triggers EEPROM store of current wiper position. |
| INC2 | Increment 2 input | Negative-edge-triggered clock for second potentiometer counter; toggles wiper position per U/D2 logic level. |
| U/D2 | Up/Down 2 control | Defines direction of wiper movement and counter increment/decrement for second potentiometer. |
| RH2 | High-side fixed terminal 2 | Fixed end of second resistor array; referenced to VCC; polarity relative to RL2 depends on U/D2 state. |
| VSS | Ground reference | Common return path for both potentiometers and digital logic; must be stable for accurate analog performance. |
| RW2 | Wiper 2 output | Movable terminal of second potentiometer; electrically isolated from RW1; supports independent dual-channel trimming. |
| RL2 | Low-side fixed terminal 2 | Fixed end of second resistor array; referenced to VSS; used with RH2 and RW2 to form complete 3-terminal potentiometer. |
| CS2 | Chip Select 2 | Active-low enable for second potentiometer; HIGH with INC2 HIGH stores wiper position to nonvolatile memory. |
| VCC | Supply voltage | Power source for analog resistor arrays and digital control logic; must remain ≥ RH/RL voltages during operation. |
| INC1 | Increment 1 input | Negative-edge-triggered clock for first potentiometer counter; synchronized with U/D1 to move RW1. |
| U/D1 | Up/Down 1 control | Determines whether INC1 advances or retracts RW1 position along the 32-tap resistor ladder. |
| RH1 | High-side fixed terminal 1 | Fixed end of first resistor array; referenced to VCC; forms voltage divider with RL1 and RW1. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent XDCP channels | Enables simultaneous but separate trimming of two analog signals-e.g., brightness and contrast in LCD drivers-without shared control logic. |
| Nonvolatile wiper position storage | Eliminates need for external microcontroller initialization at power-on; retains last-trimmed values across cold starts and brownouts. |
| 32-tap resolution with ±1 MI linearity | Delivers predictable step-wise resistance change (1.56 kΩ per tap at 50 kΩ) for repeatable analog calibration in production test fixtures. |
| Low-power standby mode (4 µA max) | Allows continuous retention of trim settings while drawing negligible current-critical for battery-backed or energy-harvesting systems. |
| TSSOP-14 Pb-free package | Meets RoHS compliance requirements and supports standard lead-free reflow profiles (peak 240 °C); footprint compatible with automated SMT assembly. |
Applications
| LCD Contrast Adjustment | Bias Voltage Trimming |
|---|---|
|
Use Scenario: Adjusting contrast ratio in monochrome or color STN/TFT LCD modules within industrial HMIs or medical displays. IC Role / Device Role / Timing Role: Dual-channel XDCP providing independent, nonvolatile resistance control for VCOM and VBIAS divider networks. Use Value: Enables user-selectable or auto-calibrated contrast without mechanical potentiometers; eliminates drift and wear over 10+ year product life. |
Use Scenario: Calibrating reference voltage offsets in precision op-amp circuits or ADC front-ends during manufacturing test. IC Role / Device Role / Timing Role: Digitally programmable 2-terminal resistor replacing manual trimmer pots in DC bias networks for amplifiers and sensors. Use Value: Supports automated test system integration via simple Up/Down pulses; stores final calibration permanently in EEPROM. |
| Audio Gain Control | Power Supply Feedback Tuning |
|
Use Scenario: Setting volume or gain levels in analog audio signal paths for consumer audio DACs or industrial audio monitoring equipment. IC Role / Device Role / Timing Role: Three-terminal potentiometer emulating mechanical volume control, with wiper (RW) connected to signal path and RH/RL to fixed rails. Use Value: Provides silent, glitch-free gain steps (no contact bounce) and retains last-set level after power cycle-ideal for unattended systems. |
Use Scenario: Fine-tuning feedback resistors in adjustable DC-DC converter ICs (e.g., buck regulators) to meet tight output voltage tolerances. IC Role / Device Role / Timing Role: Replacing discrete resistor dividers in feedback loops to allow post-production voltage calibration and field updates. Use Value: Enables ±0.5% output voltage tuning across temperature and aging; avoids costly board respins or manual rework. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digitally controlled potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5242BRUZ100 | 100 kΩ RTOTAL, I²C interface, 256-tap resolution, no built-in nonvolatile memory (requires external EEPROM). | Requires host MCU for I²C communication and memory management; better suited for systems already using I²C infrastructure. | Select when higher resolution and I²C compatibility outweigh need for autonomous power-up recall. |
| MCP42050-I/P | 50 kΩ RTOTAL, SPI interface, 256-tap resolution, volatile wiper register only (no EEPROM). | Needs continuous MCU supervision; cannot retain settings across power loss unless paired with external NVM. | Choose for high-speed digital trimming where SPI bandwidth is critical and power-cycle retention is handled externally. |
Compared with X93256UV14IZ-2.7T1, AD5242BRUZ100 offers finer resolution and standardized bus control but adds system-level complexity for nonvolatile storage, while MCP42050-I/P delivers faster update rates yet forfeits autonomous power-on behavior-making X93256UV14IZ-2.7T1 optimal for self-contained, low-pin-count analog calibration.
Availability
X93256UV14IZ-2.7T1 is available at Aetrix Electronics and suitable for LCD contrast adjustment, analog bias trimming, and power supply feedback tuning requiring stable component supply, long-term calibration integrity, and industrial temperature resilience.
Supply support for X93256UV14IZ-2.7T1 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 industrial, computing, and communications markets.
The X93256 series was developed as a drop-in replacement for mechanical potentiometers in analog trimming applications, emphasizing nonvolatile memory, low power, and robust TSSOP packaging for automated manufacturing.
FAQ
What is the maximum operating voltage for the X93256UV14IZ-2.7T1?
The X93256UV14IZ-2.7T1 supports a supply voltage range of 2.7 V to 5.5 V. Absolute maximum ratings specify –1 V to +6.5 V on all digital and analog pins relative to VSS, but sustained operation above 5.5 V risks reliability degradation and is not recommended. The "–2.7" suffix denotes guaranteed operation starting at 2.7 V.
Does the X93256UV14IZ-2.7T1 retain its wiper position after power cycling?
Yes, the X93256UV14IZ-2.7T1 stores wiper positions in nonvolatile EEPROM memory. Upon power-up, it automatically recalls the last stored value for each potentiometer. This occurs without external intervention, provided CS1 and CS2 are held HIGH during initial power ramp-up as specified in the datasheet.
How many wiper positions does each potentiometer in the X93256UV14IZ-2.7T1 support?
Each potentiometer in the X93256UV14IZ-2.7T1 provides 32 discrete wiper positions, corresponding to a 5-bit counter. These positions span 31 resistive elements, yielding a minimum increment (MI) of RTOTAL/31 ≈ 1.61 kΩ for the 50 kΩ version.
Can the two potentiometers in the X93256UV14IZ-2.7T1 be controlled simultaneously?
No-the X93256UV14IZ-2.7T1 requires sequential control: CS1 must be LOW to operate potentiometer 1, and CS2 LOW for potentiometer 2. While INC and U/D signals may be shared in some configurations, independent addressing ensures deterministic, interference-free operation of each channel.
What is the wiper resistance specification for the X93256UV14IZ-2.7T1?
The X93256UV14IZ-2.7T1 specifies a typical wiper resistance (RW) of 1100 Ω. This on-resistance contributes directly to total insertion loss and affects linearity near end-points; it remains stable across temperature and lifetime due to CMOS switch design and temperature compensation.
X93256UV14IZ-2.7T1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- XDCP™
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Taper:
- Linear
- Configuration:
- Potentiometer
- Number of Circuits:
- 2
- 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:
- ±25%
- Temperature Coefficient (Typ):
- ±35ppm/°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 14-TSSOP
- Operating Temperature:
- -40°C ~ 85°C
- Resistance - Wiper (Ohms) (Typ):
- 1100 (Max)
X93256UV14IZ-2.7T1 FAQ
1.How can I place an order for X93256UV14IZ-2.7T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for X93256UV14IZ-2.7T1 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 X93256UV14IZ-2.7T1 reliable?
The price and inventory of X93256UV14IZ-2.7T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for X93256UV14IZ-2.7T1 is usually 5 days.
3.What payment methods are accepted for X93256UV14IZ-2.7T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X93256UV14IZ-2.7T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X93256UV14IZ-2.7T1?
X93256UV14IZ-2.7T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X93256UV14IZ-2.7T1 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 X93256UV14IZ-2.7T1?
For technical support, including X93256UV14IZ-2.7T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X93256UV14IZ-2.7T1 requirements.
6.How does Aetrix verify that X93256UV14IZ-2.7T1 is sourced from the original manufacturer or authorized distributors?
All X93256UV14IZ-2.7T1 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 X93256UV14IZ-2.7T1 meets industry standards.
7.What is the process for return or replacement of X93256UV14IZ-2.7T1?
All X93256UV14IZ-2.7T1 units undergo pre-shipment inspection (PSI). If there is an issue with X93256UV14IZ-2.7T1, 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 X93256UV14IZ-2.7T1 part is unused and in its original packaging.
Return procedure for X93256UV14IZ-2.7T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
X93256UV14IZ-2.7T1 Tags
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