Renesas X9315TS-2.7T1

Overview

X9315TS-2.7T1 from Intersil is a low-noise, low-power, 32-tap digitally controlled potentiometer (XDCP™) implemented with 31 resistive elements and nonvolatile memory. It functions as a three-terminal voltage divider or two-terminal variable resistor, supports 2.7V to 5.5V supply, delivers ±20% end-to-end resistance tolerance, and retains wiper position across power cycles. It is used in precision analog trimming for sensor signal conditioning circuits.

For engineers reviewing the X9315TS-2.7T1 datasheet, X9315TS-2.7T1 pinout, X9315TS-2.7T1 application, or X9315TS-2.7T1 equivalent, this page provides verified specifications, SOIC-8 package details, wiper resistance behavior at 2.7V, nonvolatile store timing (10 ms), and real-world use cases in industrial sensor calibration and audio level control.

Technical Context

The X9315TS-2.7T1 uses a 5-bit up/down counter driving a 32-position decoder to select taps across a monolithic resistor array. Wiper movement follows make-before-break switching, preventing open-circuit transients during position changes.

Nonvolatile memory stores wiper position upon CS↑ with INC high, enabling automatic recall at power-up. The device operates in commercial temperature range (0°C to +70°C) and supports 3-wire serial interface (CS, U/D, INC) with 4 µs minimum INC cycle time and 1–5 µs wiper response delay (tIW).

Key Specifications

Pinout & Package

Package: 8-lead narrow-body SOIC (Pb-free, RoHS compliant), JEDEC MS-012-AA, body dimensions 4.90 mm × 3.90 mm × 1.75 mm max.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5243BRMZ10 and MCP41010-I/P, the X9315TS-2.7T1 offers simpler 3-wire control, lower active current (80 µA vs. ≥100 µA), and guaranteed SOIC-8 drop-in fit-making it optimal for cost-sensitive, space-constrained analog trimming where moderate resolution suffices.

Availability

X9315TS-2.7T1 is available at Aetrix Electronics and suitable for industrial sensor calibration, audio level control, laser diode bias adjustment, and programmable power supply trim requiring stable component supply and RoHS-compliant packaging.

Supply support for X9315TS-2.7T1 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 industrial, communications, and computing markets.

The X9315 family was engineered for solid-state replacement of mechanical potentiometers in analog trimming applications-emphasizing nonvolatile retention, low power, and robustness across commercial temperature ranges.

FAQ

What is the maximum wiper current rating for the X9315TS-2.7T1?

The X9315TS-2.7T1 has a maximum wiper current (IW) rating of ±3.75 mA under recommended operating conditions. Exceeding this limit risks localized heating and long-term degradation of the wiper switch resistance, which is specified at 400–1000 Ω at 2.7 V. This rating applies regardless of RTOTAL value and must be observed in both sourcing and sinking configurations.

Does the X9315TS-2.7T1 retain its wiper position after power cycling?

Yes, the X9315TS-2.7T1 retains its wiper position after power cycling. The device stores the current counter value in nonvolatile memory when CS transitions high while INC is held high. Upon subsequent power-up, the stored value is automatically recalled, restoring the wiper to its last saved position-no external controller or initialization sequence is required for this behavior in the X9315TS-2.7T1.

Can the X9315TS-2.7T1 operate reliably at 2.7 V supply voltage?

Yes, the X9315TS-2.7T1 is explicitly rated for 2.7 V to 5.5 V operation per the datasheet's Recommended Operating Conditions table. At 2.7 V, wiper resistance increases to 400–1000 Ω (vs. 200–400 Ω at 5 V), and active current remains ≤80 µA. All timing parameters-including tIW (1–5 µs) and tCYC (4 µs min)-are guaranteed across this full VCC range.

What is the temperature coefficient of the total resistance (RTOTAL) for the X9315TS-2.7T1?

The X9315TS-2.7T1 has an RTOTAL temperature coefficient of ±300 ppm/°C over the 0°C to +70°C commercial temperature range. This value reflects drift in the monolithic resistor array and is independent of wiper position. The ratiometric tempco is tighter at ±20 ppm/°C, ensuring stable voltage division ratios across temperature when used as a potentiometer.

Is the X9315TS-2.7T1 pin-compatible with other X9315 variants in SOIC-8 packages?

Yes, the X9315TS-2.7T1 shares identical pinout, footprint, and electrical interface with all X9315 variants packaged in 8-lead SOIC (e.g., X9315WSZ-2.7T1, X9315USZ-2.7T1). Differences between variants lie solely in RTOTAL (10 kΩ for TS-series), temperature grade (0°C to +70°C), and marking-enabling direct substitution within the same SOIC-8 layout without PCB modification.