Renesas ISL23711UIU10Z-T

Overview

ISL23711UIU10Z-T from Intersil is a volatile digitally controlled potentiometer (XDCP™) with I²C interface, 128-tap resolution, ±5V terminal voltage capability, and 50kΩ end-to-end resistance. It functions as a programmable three-terminal potentiometer or two-terminal variable resistor in precision biasing and gain control circuits for industrial sensor signal conditioning.

For engineers reviewing the ISL23711UIU10Z-T datasheet, ISL23711UIU10Z-T pinout, ISL23711UIU10Z-T application, or ISL23711UIU10Z-T equivalent, key selection criteria include I²C slave address configurability (A0/A1), wiper response time (1µs), ±5V dual-supply operation, and 50kΩ RTOTAL tolerance (±20%).

Technical Context

The ISL23711UIU10Z-T implements a 127-element resistor array with CMOS "make-before-break" wiper switching, enabling monotonic resistance adjustment between RH and RL terminals. Its volatile 7-bit wiper register (WR) is directly readable/writable via standard I²C protocol at up to 400kHz clock frequency.

It supports dual-rail operation with VCC = +2.7V to +5.5V and V− = −2.7V to −5.5V, allowing true bipolar terminal voltage swing from V− to VCC across RH, RL, and RW pins. The device uses hardwired A0/A1 pins to set one of four unique I²C slave addresses on a shared bus.

Key Specifications

Pinout & Package

ISL23711UIU10Z-T 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 0.5mm lead pitch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5175BRMZ-50 and MCP45HV51-503E/MS, the ISL23711UIU10Z-T uniquely integrates dual-rail ±5V operation with I²C address flexibility and sub-microsecond wiper response-making it optimal for real-time analog tuning in space-constrained industrial and automotive designs where volatile state is acceptable.

Availability

ISL23711UIU10Z-T is available at Aetrix Electronics and suitable for industrial sensor calibration, programmable op-amp gain control, and automotive cabin temperature feedback systems requiring stable component supply and RoHS-compliant packaging.

Supply support for ISL23711UIU10Z-T 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) is a U.S.-based semiconductor company specializing in precision analog and power management ICs for industrial, aerospace, and communications markets.

The ISL23711 product line delivers digitally programmable analog resistance with integrated I²C control and bipolar voltage capability-designed specifically for replacing mechanical potentiometers in automated calibration, closed-loop control, and adaptive signal conditioning systems.

FAQ

What is the power-on default wiper position for the ISL23711UIU10Z-T?

At power-on, the ISL23711UIU10Z-T initializes its volatile wiper register (WR) to 0x20 (64 decimal), placing the wiper at the electrical midpoint (tap 64 of 128) between RH and RL. This ensures repeatable, centered starting resistance in both potentiometer and rheostat configurations without host initialization.

Does the ISL23711UIU10Z-T support true bipolar operation across all terminals?

Yes, the ISL23711UIU10Z-T supports true bipolar operation: RH, RL, and RW terminals each tolerate voltages from V− to VCC. With V− = −5.5V and VCC = +5.5V, all three terminals operate across a full ±5.5V range-enabling direct use in split-supply op-amp circuits without level-shifting components.

How many ISL23711UIU10Z-T devices can share the same I²C bus?

Up to four ISL23711UIU10Z-T devices can coexist on a single I²C bus. Each device uses its A0 and A1 pins to configure a unique 7-bit slave address (0x54–0x57), eliminating address collisions without requiring external address jumpers or software remapping.

What is the maximum allowable voltage difference between RH and RL on the ISL23711UIU10Z-T?

The absolute maximum voltage difference ΔV = |V(RH) − V(RL)| for the ISL23711UIU10Z-T is 12V. This limit applies regardless of individual terminal voltages, provided both remain within their respective V− to VCC ranges. Exceeding 12V risks permanent damage to the internal resistor array.

Is the ISL23711UIU10Z-T RoHS compliant and what packaging option does the "-T" suffix indicate?

Yes, the ISL23711UIU10Z-T is RoHS compliant, using Intersil's Pb-Free Plus Anneal process with 100% matte tin termination. The "-T" suffix denotes tape-and-reel packaging (standard for automated SMT assembly), with the base part ISL23711UIU10Z specifying the same Pb-free MSOP package and electrical specifications.