Renesas ISL95710UIU10Z

Overview

ISL95710UIU10Z from Intersil is a digitally controlled potentiometer (XDCP™) with 50kΩ end-to-end resistance, ±2.7V to ±5.5V terminal voltage range, 128 wiper tap positions, nonvolatile wiper position storage, and Up/Down interface - used for precision bias adjustment in analog signal chains and power supply feedback networks.

For engineers reviewing the ISL95710UIU10Z datasheet, ISL95710UIU10Z pinout, ISL95710UIU10Z application, or ISL95710UIU10Z equivalent, key selection criteria include its bipolar voltage capability, 50kΩ resistance tolerance (±20%), 70–200Ω wiper resistance, ±50ppm/°C tempco, and MSOP-10 package compatibility with industrial temperature operation (−40°C to +85°C).

Technical Context

The ISL95710UIU10Z implements a 127-element resistor array with a 7-bit up/down counter driving a wiper decoder; wiper position is stored in nonvolatile EEPROM and recalled at power-up. Its "make-before-break" switching ensures continuity during tap transitions.

It operates with dual supplies: VCC = +2.7V to +5.5V and V− = −2.7V to −5.5V, enabling true bipolar voltage divider or rheostat configurations. Control uses asynchronous CS/U/D/INC signals - no clock required - with negative-edge-triggered INC and chip-select–enabled nonvolatile store.

Key Specifications

Pinout & Package

ISL95710UIU10Z is housed in a Pb-free 10-lead MSOP package (JEDEC MO-187BA, pkg drawing M10.118), measuring 3.0mm × 4.9mm × 1.0mm, with gull-wing leads and 0.5mm pitch - compatible with standard surface-mount reflow profiles.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar digitally controlled potentiometer applications.

Compared with ISL95710UIU10Z, ISL95310 sacrifices bipolar operation and tap count for lower cost and smaller die size, while AD5175BRMZ-50 trades native dual-rail simplicity for higher resolution and serial programmability - neither offers the same combination of ±5.5V analog range, 128-tap precision, and nonvolatile store in MSOP-10.

Availability

ISL95710UIU10Z is available at Aetrix Electronics and suitable for industrial sensor calibration, telecom power supply trimming, and medical device bias adjustment requiring stable component supply across extended product lifecycles.

Supply support for ISL95710UIU10Z 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 ISL95710UIU10Z belongs to Intersil's XDCP™ family of nonvolatile digital potentiometers, engineered specifically for replacing mechanical trimpots in harsh-environment, long-lifecycle industrial and automotive systems where recalibration and physical wear are unacceptable.

FAQ

What is the maximum allowable voltage difference between RH and RL terminals for ISL95710UIU10Z?

The absolute maximum voltage difference |V(RH) − V(RL)| is 12V per the datasheet Absolute Maximum Ratings. This limit applies regardless of individual terminal voltages - for example, RH = +5.5V and RL = −5.5V yields 11V differential, which is within spec. Exceeding 12V risks permanent damage to the resistor array.

Does ISL95710UIU10Z support true bipolar operation, and how is it implemented?

Yes, ISL95710UIU10Z supports true bipolar operation via separate VCC (+2.7V to +5.5V) and V− (−2.7V to −5.5V) supply pins. The resistor array is centered between these rails, allowing RH and RL to be biased at opposing potentials - enabling use in AC-coupled amplifiers, dual-supply DAC references, and symmetric signal conditioning paths without external level shifters.

How does the nonvolatile store function work on ISL95710UIU10Z?

The ISL95710UIU10Z stores the current wiper position in EEPROM when CS transitions HIGH while INC is held HIGH. This "store" command takes 20ms to complete (tCPHS). Once stored, the value persists for 50 years at ≤+75°C and is automatically loaded to the wiper counter at next power-up, provided VCC and V− meet POR thresholds (≥2.5V and ≥−2.5V respectively).

Can ISL95710UIU10Z be used in rheostat mode, and what are the key constraints?

Yes, ISL95710UIU10Z can operate as a two-terminal variable resistor by connecting either RH or RL to RW and leaving the other fixed terminal unconnected. In this mode, resistance ranges from near-zero (wiper at connected terminal) to full 50kΩ (wiper at opposite end), with monotonicity guaranteed and DNL ≤ ±0.5 LSB - but wiper resistance (70–200Ω) adds directly to measured value.

What is the recommended power-up sequence to avoid unintended wiper movement or store on ISL95710UIU10Z?

Per the datasheet, bring CS and INC HIGH *before or concurrently* with VCC ramping, then apply V− *after* VCC has stabilized. This prevents spurious INC edges during power ramp and avoids accidental nonvolatile store. Failure to follow this sequence may cause undefined wiper position or corrupted EEPROM data - especially critical in systems with shared reset lines.