Renesas ISL23711WIU10Z-T

Overview

ISL23711WIU10Z-T from Intersil is a volatile digitally controlled potentiometer (XDCP™) with 128-tap resolution, I²C serial interface, ±3V or ±5V terminal voltage capability, and 10kΩ 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 ISL23711WIU10Z-T datasheet, ISL23711WIU10Z-T pinout, ISL23711WIU10Z-T application, or ISL23711WIU10Z-T equivalent, key selection considerations include its dual-supply operation (V_CC = 2.7–5.5V / V₋ = −2.7 to −5.5V), 7-bit volatile wiper register, ±4 ppm/°C ratiometric tempco, and 10-lead MSOP package compatibility with space-constrained analog front-ends.

Technical Context

The ISL23711WIU10Z-T implements a 127-element resistor array with CMOS wiper switches operating in make-before-break mode, enabling monotonic resistance adjustment between RH and RL terminals. Its I²C interface supports up to four devices on one bus via A0/A1 address pins and uses standard 7-bit slave addressing with R/W bit.

Wiper position is controlled exclusively by the volatile 7-bit Wiper Register (WR), initialized to 0x20 (64 decimal) at power-on. The device operates in voltage divider mode (V₋ at RL, V_CC at RH) or resistor mode (RW–RL or RW–RH), with leakage current ≤±0.1 µA across RH/RL/RW over full supply range.

Key Specifications

Pinout & Package

Package: 10-lead MSOP (M10.118, JEDEC MO-187BA), Pb-free plus anneal RoHS-compliant, 3.0 mm × 4.75 mm footprint, 0.5 mm pitch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5171BRMZ-10 and MCP4018T-103I/OT, the ISL23711WIU10Z-T uniquely supports true bipolar analog signal paths (V− to V_CC) and delivers superior ratiometric stability (±4 ppm/°C), making it optimal for industrial calibration and precision instrumentation where supply headroom and temperature-induced ratio errors must be minimized.

Availability

ISL23711WIU10Z-T is available at Aetrix Electronics and suitable for industrial sensor calibration, programmable gain amplifiers, laser diode bias control, and audio channel balance applications requiring stable component supply and long-term sourcing continuity.

Supply support for ISL23711WIU10Z-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 analog and mixed-signal semiconductor company specializing in power management, precision analog, and interface ICs.

The ISL23711 product line was designed for high-accuracy, digitally programmable analog trimming in industrial, automotive, and communications systems where bipolar voltage range, low tempco, and I²C configurability are essential.

FAQ

What is the power-on default wiper position for the ISL23711WIU10Z-T?

At power-on, the ISL23711WIU10Z-T initializes its volatile wiper register (WR) to 0x20 (decimal 64), placing the wiper at the electrical midpoint of the 128-tap resistor array. This ensures predictable startup behavior in bias-sensitive circuits and avoids extreme gain or offset conditions before firmware initialization. The ISL23711WIU10Z-T does not retain wiper position across power cycles due to its volatile memory architecture.

Does the ISL23711WIU10Z-T support bipolar analog signal ranges?

Yes, the ISL23711WIU10Z-T supports true bipolar operation with independent V_CC (2.7–5.5 V) and V₋ (−2.7 to −5.5 V) supplies, allowing RH, RL, and RW terminals to operate between V₋ and V_CC. This enables direct use in ±2.5 V or ±5 V signal paths - such as op-amp input biasing or DAC output scaling - without external level-shifting components. The ISL23711WIU10Z-T's specified terminal voltage range is explicitly ±3 V or ±5 V.

What is the maximum I²C clock frequency supported by the ISL23711WIU10Z-T?

The ISL23711WIU10Z-T supports standard-mode I²C operation up to 400 kHz, as confirmed in its operating specifications table. Timing parameters including t_LOW (1300 ns min), t_HIGH (600 ns min), and t_AA (900 ns max) are fully characterized at this frequency. The ISL23711WIU10Z-T does not support fast-mode (1 MHz) or high-speed I²C protocols, and exceeding 400 kHz may result in unreliable register access or communication failure.

How many ISL23711WIU10Z-T devices can share a single I²C bus?

Up to four ISL23711WIU10Z-T devices can operate on the same I²C bus using the A0 and A1 address select pins, which configure the two least-significant bits of the 7-bit slave address. Each device requires a unique combination of A0/A1 logic levels (00, 01, 10, or 11) to avoid address collision. The ISL23711WIU10Z-T's hardwired slave address structure eliminates the need for external address jumpers or configuration registers.

Is the ISL23711WIU10Z-T RoHS compliant and what packaging option does "-T" indicate?

Yes, the ISL23711WIU10Z-T is RoHS compliant under the "Pb-Free Plus Anneal" construction, featuring 100% matte tin termination and lead-free molding compounds compatible with both SnPb and Pb-free soldering processes. The "-T" suffix denotes tape-and-reel packaging (standard for automated SMT assembly), while "Z" indicates Pb-free compliance. The device meets IPC/JEDEC J-STD-020 moisture sensitivity level requirements for surface-mount reflow.