My Inquiry
My Account
Renesas ISL22414WMU10Z
- Part No.:
- ISL22414WMU10Z
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
ISL22414WMU10Z.pdf
- Description:
- IC DGTL POT 10KOHM 256TAP 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,632
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ISL22414WMU10Z from Renesas (formerly Intersil) is a single-channel, 256-tap digitally controlled potentiometer (XDCP™) with SPI interface, non-volatile wiper position storage, and dual-supply operation (VCC = +2.25V to +5.5V, V– = –2.25V to –5.5V). It features 10kΩ end-to-end resistance, ±150 ppm/°C end-to-end tempco, and operates across the military temperature range (–55°C to +125°C) in a 10-lead MSOP package. It serves as a precision programmable resistor in analog signal conditioning and bias control circuits.
For engineers reviewing the ISL22414WMU10Z datasheet, ISL22414WMU10Z pinout, ISL22414WMU10Z application, or ISL22414WMU10Z equivalent, key selection criteria include its bipolar supply capability, non-volatile initial value register (IVR), shutdown mode behavior, wiper resistance (70Ω typ), and compatibility with daisy-chained SPI configurations for multi-channel calibration systems.
Technical Context
The ISL22414WMU10Z implements a monolithic CMOS resistor ladder with CMOS switch matrix controlled by an 8-bit volatile Wiper Register (WR); at power-up, the WR is loaded from a non-volatile Initial Value Register (IVR). Its dual-supply architecture enables true bipolar terminal voltage swing between V– and VCC, supporting applications requiring negative reference potentials or AC-coupled signal adjustment.
It supports SPI Mode 0 (CPOL = 0, CPHA = 0) with rising-edge data input (SDI) and falling-edge data output (SDO), includes 14 general-purpose non-volatile registers for lookup table storage, and features "make-before-break" wiper switching to prevent open-circuit transients during tap changes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Total Resistance | 10kΩ - defines full-scale analog range for voltage divider or rheostat use; matched to legacy mechanical potentiometer footprints. |
| Wiper Resistance | 70Ω typical @ 1mA - limits insertion error and thermal noise in precision gain-setting or offset trimming applications. |
| Integral Non-linearity | ±0.5 LSB max (voltage divider mode) - ensures monotonicity and <0.2% full-scale linearity error over all 256 taps. |
| Standby Current | <2.5µA max @ +125°C - enables ultra-low-power operation in battery-backed or always-on calibration subsystems. |
| Temperature Range | –55°C to +125°C - qualified for military-grade embedded systems, avionics, and downhole instrumentation where extended thermal stability is mandatory. |
| End-to-End Tempco | ±150 ppm/°C - guarantees resistance drift ≤±0.15% over full military temperature range, critical for stable sensor biasing. |
| Non-volatile Endurance | 1,000,000 write cycles - supports field recalibration and long-term configuration retention without wear-out concerns. |
Pinout & Package
Package: 10-lead MSOP (M10.118), Pb-free/RoHS compliant, 3.0mm × 3.0mm footprint with exposed pad (not electrically connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SCK | SPI clock input | Edge-triggered master clock; rising edge samples SDI, falling edge outputs SDO - requires clean, low-jitter timing for reliable register access. |
| 2 SDO | SPI serial data output | Configurable Push-Pull or Open-Drain (via ACR[1]); default Push-Pull eliminates external pull-up need in most host interfaces. |
| 3 SDI | SPI serial data input | Accepts instruction + data bytes; MSB-first protocol with address decoding per Table 3/4 in FN6424 Rev 2.00. |
| 4 CS | Chip select (active low) | Enables SPI interface and powers internal logic; rising edge triggers non-volatile write completion and wiper recall from IVR. |
| 5 V– | Negative supply rail | Supports bipolar DCP operation; must be within –2.25V to –5.5V and referenced to GND - enables negative voltage adjustment in op-amp feedback paths. |
| 6 GND | Analog/digital ground reference | Common return for V–, VCC, and digital I/O; separation from noisy system ground avoids wiper position corruption. |
| 7 RL | DCP low terminal | Fixed end of resistor ladder; tied to V– in bipolar voltage divider mode - sets lower bound of adjustable output range. |
| 8 RW | DCP wiper terminal | Movable contact point; resistance to RL increases monotonically with WR value (0–255); used for gain, offset, or threshold control. |
| 9 RH | DCP high terminal | Fixed end of resistor ladder; tied to VCC in voltage divider mode - sets upper bound of adjustable output range. |
| 10 VCC | Positive supply rail | Supplies core logic and analog ladder; range +2.25V to +5.5V allows direct interfacing with 3.3V or 5V microcontrollers without level shifters. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-supply operation (VCC/V–) | Enables true bipolar voltage adjustment (e.g., ±2.5V range) without external level-shifting circuitry - reduces BOM count in precision instrumentation. |
| Non-volatile Initial Value Register (IVR) | Recalls factory- or user-programmed wiper position at power-up - eliminates boot-time calibration routines and ensures deterministic startup behavior. |
| Shutdown mode (ACR[6]) | Forces RW-to-RL short and opens RH–RL path - isolates downstream circuitry during sleep, preventing leakage-induced drift in high-impedance nodes. |
| Daisy-chain SPI capability | Allows cascading multiple ISL22414 devices on one CS line - simplifies layout and firmware for multi-channel trim (e.g., 12-bit ADC reference, multi-opamp bias networks). |
| 14 GP non-volatile registers | Stores calibration coefficients, channel-specific offsets, or lookup tables - enables self-contained, field-updatable compensation without external EEPROM. |
Applications
| Instrumentation Calibration | Laser Diode Bias Control |
|---|---|
|
Use Scenario: Precision DC offset and gain trimming in high-resolution data acquisition front-ends (e.g., 24-bit ΣΔ ADC reference buffers). IC Role / Device Role / Timing Role: Digitally programmable two-terminal resistor replacing manual trimpots; configured in rheostat mode between op-amp feedback and inverting input. Use Value: Enables automated factory calibration via SPI, eliminating manual labor and drift-prone mechanical adjustments; 10kΩ value matches standard op-amp feedback network impedances. |
Use Scenario: Stable, temperature-compensated current setpoint for telecom laser diodes operating across –40°C to +85°C ambient. IC Role / Device Role / Timing Role: Three-terminal voltage divider setting reference voltage for laser driver IC's ISET pin; RH tied to VCC, RL to V–, RW to driver input. Use Value: Dual-supply support allows direct generation of negative reference voltages (e.g., –1.25V) required by certain laser drivers; ±150 ppm/°C tempco ensures <±0.1% current drift over full range. |
| Avionics Sensor Signal Conditioning | Industrial Process Controller Trim |
|
Use Scenario: Cold-junction compensation and linearization of thermocouple signals in flight control computers. IC Role / Device Role / Timing Role: Programmable resistor in analog polynomial correction network; values stored in GP registers adapt to sensor-specific coefficients. Use Value: Military-grade temperature rating (–55°C to +125°C) and 50-year data retention guarantee calibration integrity over aircraft service life without periodic re-trimming. |
Use Scenario: Field-adjustable loop gain and zero-point calibration in 4–20mA transmitter modules deployed in hazardous areas. IC Role / Device Role / Timing Role: SPI-configured rheostat in HART modem bias network and DAC output buffer gain stage. Use Value: Shutdown mode disables wiper path during maintenance, preventing accidental parameter changes; RoHS-compliant MSOP fits space-constrained explosion-proof enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digitally controlled potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL22414TFU10Z-TK | Same die, 100kΩ resistance option, industrial temp range (–40°C to +125°C), identical pinout and SPI protocol. | Higher resistance increases voltage divider output impedance; less suitable for low-Z loads but better for high-impedance sensor biasing. | Select when higher end-to-end resistance improves SNR in high-gain amplifier stages or matches legacy 100kΩ design requirements. |
| AD5170BRMZ-10 | 10kΩ, I²C interface, single-supply only (2.7V–5.5V), no V– pin, 20ppm/°C tempco, different register map and command structure. | Lacks bipolar operation and daisy-chain support; requires I²C host and level-shifting for negative voltage applications. | Choose for cost-sensitive, single-supply systems where I²C is preferred and bipolar adjustment is unnecessary - not drop-in compatible. |
Compared with ISL22414WMU10Z, ISL22414TFU10Z-TK offers higher resistance for reduced current draw in voltage dividers but sacrifices military temperature rating, while AD5170BRMZ-10 trades SPI flexibility and bipolar capability for simpler I²C integration and tighter tempco - neither is pin- or functionally identical.
Availability
ISL22414WMU10Z is available at Aetrix Electronics and suitable for instrumentation calibration, avionics signal conditioning, laser diode bias control, and industrial process controller trim requiring stable component supply across extended temperature environments.
Supply support for ISL22414WMU10Z 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 acquired Intersil in 2017 and maintains full technical support and manufacturing continuity for legacy Intersil precision analog products including the ISL22414 family.
The ISL22414 product line delivers digitally programmable resistance with non-volatile memory and robust SPI control, targeting high-reliability analog trimming in aerospace, defense, and industrial systems where mechanical potentiometers fail.
FAQ
What is the recommended replacement for ISL22414WMU10Z?
The official recommended replacement for ISL22414WMU10Z is ISL22414TFU10Z-TK, as documented in FN6424 Rev 2.00. While ISL22414WMU10Z is discontinued and rated for –55°C to +125°C, ISL22414TFU10Z-TK provides identical functionality with 100kΩ resistance and industrial temperature range (–40°C to +125°C). ISL22414WMU10Z remains supported for legacy design continuity through Aetrix Electronics' extended lifecycle program.
Does ISL22414WMU10Z support true bipolar operation?
Yes, ISL22414WMU10Z supports true bipolar operation via separate VCC (+2.25V to +5.5V) and V– (–2.25V to –5.5V) supplies. This allows the RH and RL terminals to span a total differential voltage up to 11V, enabling negative reference generation and AC-coupled signal adjustment without external level shifters - a capability confirmed in the Absolute Maximum Ratings and Recommended Operating Conditions sections of the ISL22414 datasheet.
How does the shutdown mode affect the DCP terminals in ISL22414WMU10Z?
In shutdown mode (enabled by setting ACR[6] = 0), ISL22414WMU10Z forces an internal short between RW and RL while opening the RH–RL path. This isolates the wiper from the high-side terminal and grounds the wiper node, preventing unintended current flow or voltage injection into sensitive downstream circuitry - a behavior explicitly defined in Figure 15 and the Pin Description section of the ISL22414 datasheet.
Can ISL22414WMU10Z be used in daisy-chain SPI configuration?
Yes, ISL22414WMU10Z supports daisy-chain SPI configuration as described in the Applications Information section (page 14) of FN6424 Rev 2.00. By connecting the SDO of one device to the SDI of the next while sharing SCK and CS lines, up to N devices can be controlled with a single chip select - enabling synchronized wiper updates across multiple channels without additional GPIO resources.
What is the wiper resistance specification for ISL22414WMU10Z?
The wiper resistance for ISL22414WMU10Z is specified as 70Ω typical and 250Ω maximum at 1mA test current, per the Analog Specifications table on page 4 of FN6424 Rev 2.00. This low on-resistance minimizes insertion loss and thermal noise in precision gain-setting applications, and is measured with RH floating and VRL = V– under standard test conditions.
ISL22414WMU10Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- XDCP™
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Taper:
- Linear
- Configuration:
- Potentiometer
- Number of Circuits:
- 1
- Number of Taps:
- 256
- Resistance (Ohms):
- 10k
- Interface:
- SPI
- Memory Type:
- Non-Volatile
- Voltage - Supply:
- ±2.25V ~ 5.5V
- Features:
- -
- Tolerance:
- ±20%
- Temperature Coefficient (Typ):
- 150ppm/°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 10-MSOP
- Operating Temperature:
- -55°C ~ 125°C
- Resistance - Wiper (Ohms) (Typ):
- 70
ISL22414WMU10Z FAQ
1.How can I place an order for ISL22414WMU10Z through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL22414WMU10Z 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 ISL22414WMU10Z reliable?
The price and inventory of ISL22414WMU10Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL22414WMU10Z is usually 5 days.
3.What payment methods are accepted for ISL22414WMU10Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL22414WMU10Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL22414WMU10Z?
ISL22414WMU10Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL22414WMU10Z 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 ISL22414WMU10Z?
For technical support, including ISL22414WMU10Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL22414WMU10Z requirements.
6.How does Aetrix verify that ISL22414WMU10Z is sourced from the original manufacturer or authorized distributors?
All ISL22414WMU10Z 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 ISL22414WMU10Z meets industry standards.
7.What is the process for return or replacement of ISL22414WMU10Z?
All ISL22414WMU10Z units undergo pre-shipment inspection (PSI). If there is an issue with ISL22414WMU10Z, 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 ISL22414WMU10Z part is unused and in its original packaging.
Return procedure for ISL22414WMU10Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ISL22414WMU10Z 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…
