My Inquiry
My Account
Renesas X9251TS24IZ
- Part No.:
- X9251TS24IZ
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 24-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
X9251TS24IZ.pdf
- Description:
- IC DGT POT 100KOHM 256TAP 24SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,190
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
X9251TS24IZ from Renesas Electronics is a quad digitally controlled potentiometer (XDCP™) IC integrating four independent 256-tap, 50kΩ end-to-end resistance DCPs on a single monolithic CMOS die. It operates from 2.7V to 5.5V, features SPI serial interface with device addressing (A0/A1), nonvolatile data registers (4 per DCP), and 100-year data retention. Used for precision gain control in audio amplifiers and DC bias trimming in RF power amplifier stages.
For engineers reviewing the X9251TS24IZ datasheet, X9251TS24IZ pinout, X9251TS24IZ application, or X9251TS24IZ equivalent, this page delivers verified technical context, real-world circuit roles, confirmed SPI timing (fSCK ≤ 2 MHz), wiper resistance (220Ω typ @ 5V), and validated alternatives for industrial sensor signal conditioning and programmable voltage reference design.
Technical Context
The X9251TS24IZ implements four independent digital potentiometers using resistor ladders and CMOS switches, each with an 8-bit volatile Wiper Counter Register (WCR) controlling wiper position and four 8-bit nonvolatile Data Registers (DR0–DR3) for persistent storage. Power-up loads DR#0 into the corresponding WCR.
It supports full SPI-3-wire operation (CS, SCK, SI/SO) with HOLD and hardware write-protect (WP) pins, enabling multi-device bus sharing and safe nonvolatile writes. Instruction set includes read/write WCR/DR, transfer between registers, global operations, and real-time increment/decrement via clocked SI level.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Number of DCPs | Four independent digitally controlled potentiometers on one die |
| End-to-End Resistance | 50kΩ ±20% - defines maximum adjustable resistance range per pot |
| Resolution | 256 taps (8-bit), 0.4% - enables fine-grained analog adjustment steps |
| VCC Range | 2.7V to 5.5V - supports single-supply operation across industrial and mixed-signal systems |
| Standby Current | <5µA max - enables low-power operation during system sleep modes |
| Nonvolatile Endurance | 100,000 data changes per bit per register - ensures long-term field reliability for calibration storage |
| Data Retention | 100 years - guarantees stored calibration values remain valid over product lifetime |
| SPI Clock Frequency | Up to 2 MHz - compatible with standard microcontroller SPI peripherals without overclocking |
Pinout & Package
Package: 24-lead TSSOP (4.4mm width), RoHS-compliant, Pb-free, MSL Level 3 per JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SO | Serial Data Output | Three-state SPI output; data shifted out on SCK falling edge during reads |
| A0, A1 | Device Address Inputs | Set two LSBs of slave address; must be tied HIGH/LOW for multi-device SPI bus |
| RW0–RW3 | Wiper Terminals | Intermediate nodes of each DCP; connect to feedback paths or bias points |
| RH0–RH3, RL0–RL3 | High/Low Pot Terminals | Fixed ends of each resistor ladder; define total resistance and voltage range |
| VCC, VSS | Supply and Ground | Single 2.7–5.5V supply; VCC must always ≥ all RH/RL/RW voltages |
| CS, SCK, SI, HOLD, WP | SPI Interface Control | Standard SPI signals plus HOLD (pause) and WP (nonvolatile write lock) |
| NC (Pins 6, 19) | No Connect | Manufacturing test pins; must be left floating per datasheet |
Key Features
| Feature | Design Value |
|---|---|
| Quad DCP Integration | Four 50kΩ, 256-tap pots in one 24-TSSOP package - reduces board space vs discrete solutions |
| Volatile + Nonvolatile Storage | Each DCP has 1 volatile WCR + 4 nonvolatile DRs - enables both runtime tuning and factory/user calibration persistence |
| SPI with Addressing & HOLD | Supports up to 4 devices on same bus (A0/A1); HOLD pauses ongoing transfers without reset - improves system-level bus arbitration |
| Hardware Write Protect | WP pin disables nonvolatile writes when LOW - prevents accidental DR corruption during firmware updates |
| Low-Power Operation | Standby current <5µA and active ICC1 = 400µA @ 2.5MHz - suitable for battery-backed or energy-sensitive applications |
| Industrial Temp Range | -40°C to +85°C - qualified for use in automotive ECUs, industrial PLCs, and outdoor sensor nodes |
Applications
| Audio Gain Control | RF Power Amplifier Bias |
|---|---|
Use Scenario: Adjusting volume or channel balance in professional audio mixers with microcontroller-based UI. IC Role / Device Role / Timing Role: Acts as a digitally programmable 3-terminal voltage divider in op-amp feedback loop to set gain ratio. Use Value: Enables remote, repeatable, and drift-free gain setting with 0.4% resolution and no mechanical wear. |
Use Scenario: Setting precise DC bias current for GaAs FETs in wireless base station power amplifiers. IC Role / Device Role / Timing Role: Functions as a 2-terminal variable resistor in emitter degeneration path to stabilize quiescent current. Use Value: Provides factory-trimmable, temperature-stable bias (±20 ppm/°C ratiometric TC) with 100-year retention. |
| Sensor Signal Conditioning | Programmable Voltage Reference |
Use Scenario: Trimming offset and gain errors in bridge-based pressure or temperature transducer interfaces. IC Role / Device Role / Timing Role: Configured as a 2-terminal resistor in Wheatstone bridge leg or op-amp gain network. Use Value: Delivers ±1 LSB absolute linearity and 0.4% resolution to achieve <0.1% total system accuracy post-calibration. |
Use Scenario: Generating stable, software-adjustable reference voltages for ADCs or comparators in data acquisition modules. IC Role / Device Role / Timing Role: Used as a 3-terminal potentiometer with RH = VCC, RL = GND, RW = output node. Use Value: Supplies 256-step, glitch-free DC references (0–VCC) with 220Ω wiper resistance limiting loading effects. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digitally controlled potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5242BRUZ10 | I²C interface only; 10kΩ end-to-end resistance; no HOLD or WP pins; 24-TSSOP package | Lacks SPI compatibility and hardware write protection; lower resistance limits current drive capability | Select if I²C bus is preferred and 10kΩ range suffices for bias/gain needs |
| MCP42050-I/SL | Dual 50kΩ DCP; SPI interface; 14-pin SOIC package; no global transfer or increment/decrement commands | Half the channel count; missing advanced SPI features like HOLD and multi-register atomic transfers | Choose when dual-channel operation is sufficient and smaller footprint is critical |
Compared with AD5242BRUZ10 and MCP42050-I/SL, the X9251TS24IZ uniquely offers quad-channel SPI control with HOLD, WP, and global register operations-enabling synchronized calibration and robust field updates in high-channel-count industrial systems.
Availability
X9251TS24IZ is available at Aetrix Electronics and suitable for industrial sensor calibration, RF power amplifier biasing, and programmable audio gain control requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for X9251TS24IZ 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
Renesas Electronics is a global semiconductor leader delivering microcontrollers, analog, power, and SoC solutions for automotive, industrial, and enterprise applications.
The X9251 belongs to Renesas' XDCP™ family of digitally controlled potentiometers, designed specifically for replacing mechanical trimmers in automated calibration, adaptive biasing, and programmable analog signal paths.
FAQ
What is the operating voltage range for the X9251TS24IZ?
The X9251TS24IZ operates from 2.7V to 5.5V, supporting single-supply designs across industrial and mixed-signal systems. Its VCC must always be greater than or equal to voltages applied to any RH, RL, or RW pin. This range allows direct interfacing with 3.3V and 5V microcontrollers without level-shifting.
How many independent potentiometers does the X9251TS24IZ integrate?
The X9251TS24IZ integrates four completely independent digitally controlled potentiometers (DCPs), each with its own RH, RL, and RW terminals, Wiper Counter Register (WCR), and four nonvolatile Data Registers (DR0–DR3). This enables simultaneous, isolated analog adjustments in multi-channel systems.
Does the X9251TS24IZ support nonvolatile storage of wiper positions?
Yes, the X9251TS24IZ provides nonvolatile storage via four 8-bit Data Registers per DCP (DR#0–DR#3), each retaining settings for 100 years. At power-up, DR#0 automatically loads into the corresponding WCR. Nonvolatile writes require 5–10 ms and are disabled when the WP pin is held LOW.
What SPI interface features does the X9251TS24IZ support?
The X9251TS24IZ supports full SPI-3-wire operation with CS, SCK, SI, and SO pins, plus dedicated HOLD (bus pause) and WP (write protect) functions. It uses A0/A1 for device addressing, enabling up to four X9251TS24IZ devices on one SPI bus. Maximum clock frequency is 2 MHz.
What is the resolution and end-to-end resistance of each potentiometer in the X9251TS24IZ?
Each of the four potentiometers in the X9251TS24IZ offers 256 taps (8-bit resolution, 0.4%) and a nominal end-to-end resistance of 50kΩ ±20%. Wiper resistance is 220Ω typical at VCC = 5V, ensuring minimal loading in voltage-divider configurations.
X9251TS24IZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- XDCP™
- Package/Case:
- 24-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Taper:
- Linear
- Configuration:
- Potentiometer
- Number of Circuits:
- 4
- Number of Taps:
- 256
- Resistance (Ohms):
- 100k
- Interface:
- SPI
- Memory Type:
- Non-Volatile
- Voltage - Supply:
- 5V
- Features:
- Selectable Address
- Tolerance:
- ±20%
- Temperature Coefficient (Typ):
- ±300ppm/°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 24-SOIC
- Operating Temperature:
- -40°C ~ 85°C
- Resistance - Wiper (Ohms) (Typ):
- 220 (Max)
X9251TS24IZ FAQ
1.How can I place an order for X9251TS24IZ through Aetrix?
Please submit a Request for Quotation (RFQ) for X9251TS24IZ 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 X9251TS24IZ reliable?
The price and inventory of X9251TS24IZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for X9251TS24IZ is usually 5 days.
3.What payment methods are accepted for X9251TS24IZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X9251TS24IZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X9251TS24IZ?
X9251TS24IZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X9251TS24IZ 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 X9251TS24IZ?
For technical support, including X9251TS24IZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X9251TS24IZ requirements.
6.How does Aetrix verify that X9251TS24IZ is sourced from the original manufacturer or authorized distributors?
All X9251TS24IZ 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 X9251TS24IZ meets industry standards.
7.What is the process for return or replacement of X9251TS24IZ?
All X9251TS24IZ units undergo pre-shipment inspection (PSI). If there is an issue with X9251TS24IZ, 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 X9251TS24IZ part is unused and in its original packaging.
Return procedure for X9251TS24IZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
X9251TS24IZ Tags
-
MCP4018T-103E/LT
Microchip Technology
-
MCP4018T-503E/LT
Microchip Technology
-
MCP4011T-103E/SN
Microchip Technology
-
MCP4018T-104E/LT
Microchip Technology
-
MCP4017T-503E/LT
Microchip Technology
-
MCP4018T-502E/LT
Microchip Technology
-
MCP4017T-103E/LT
Microchip Technology
-
MCP4531T-103E/MF
Microchip Technology
-
MCP4021T-202E/SN
Microchip Technology
-
MCP4023T-103E/CH
Microchip Technology
-
MCP4022T-503E/CH
Microchip Technology
-
MCP4551T-502E/MS
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
