Renesas X9313ZM

Overview

X9313ZM from Intersil is a digitally controlled potentiometer (XDCP™) with 32 linear tap positions, 1 kΩ end-to-end resistance, 3-wire serial interface (CS/U/D/INC), ±VCC terminal voltage range, and nonvolatile wiper position storage. It functions as a solid-state replacement for mechanical potentiometers in precision analog trimming applications requiring power-up recall and low-power operation.

For engineers reviewing the X9313ZM datasheet, X9313ZM pinout, X9313ZM application, or X9313ZM equivalent, key selection criteria include its 1 kΩ RTOTAL, MSOP-8 package, 0°C to +70°C operating range, 3V–5.5V supply compatibility, and make-before-break wiper switching behavior critical for glitch-free analog signal adjustment.

Technical Context

The X9313ZM implements a 31-element resistor array with a digitally addressable wiper controlled by an up/down counter and decoded via 5-bit logic. Its control architecture uses negative-edge-triggered INC input with U/D direction select and CS-gated store-on-high functionality.

Wiper position is retained in nonvolatile memory for 100 years and restored at power-up; terminal voltages support ±VCC operation (–5V to +5V at VCC = 5V), and wiper resistance is 40 Ω typical at 5V. The device operates in active mode (≤3 mA) or standby (≤500 µA) based on CS state.

Key Specifications

Pinout & Package

Package: 8-lead MSOP (Pb-free, RoHS compliant), dimensions per JEDEC MO-187-AA, body size 3.0 mm × 3.0 mm × 0.95 mm.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5170BRMZ-1 and MCP41010-I/P, the X9313ZM uniquely combines 1 kΩ low-RTOTAL, ±VCC terminal tolerance, and guaranteed power-up recall in an MSOP-8 package-making it optimal for analog trimming where signal integrity, bipolar operation, and zero-touch calibration are mandatory.

Availability

X9313ZM is available at Aetrix Electronics and suitable for laser diode bias control, audio tone stack calibration, industrial sensor offset trim, programmable power supply feedback, and analog front-end gain adjustment requiring stable component supply and long-term calibration retention.

Supply support for X9313ZM 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 is a precision analog and power management semiconductor provider, now part of Renesas Electronics, with deep expertise in high-reliability industrial and infrastructure solutions.

The X9313 product line was designed specifically for replacing mechanical potentiometers in analog signal conditioning, sensor calibration, and power supply feedback loops where nonvolatile setting retention and solid-state reliability are essential.

FAQ

What is the maximum allowable voltage across RH/VH and RL/VL terminals for X9313ZM?

The X9313ZM supports a maximum differential voltage ΔV = |VH – VL| of 4V under all operating conditions. This limit is specified in the Absolute Maximum Ratings table and applies regardless of VCC level. Exceeding 4V risks irreversible damage to the internal resistor array switches. For bipolar operation, ensure VH and VL remain within –VCC to +VCC while maintaining their difference ≤4V.

Does X9313ZM require an external clock or crystal to operate?

No, the X9313ZM does not require any external clock or crystal. Its 3-wire interface (CS, U/D, INC) is asynchronous and driven entirely by the host controller's GPIO signals. The INC input is negative-edge-triggered, and timing parameters such as tCYC (2 µs minimum) and tIW (5 µs wiper transition) are internally managed without external timing components.

Can X9313ZM be used in a two-terminal variable resistor configuration?

Yes, the X9313ZM can be configured as a two-terminal variable resistor by connecting either RH/VH or RL/VL to the wiper RW/VW and using the remaining fixed terminal with the wiper as the adjustable element. This configuration is explicitly supported in the datasheet and commonly used for current limiting or gain-setting where only one adjustable node is required.

How is the wiper position stored and recalled in X9313ZM?

The X9313ZM stores the current wiper position in nonvolatile memory when CS transitions from LOW to HIGH while INC is held HIGH. Upon power-up, the stored value is automatically loaded into the wiper counter, positioning the wiper at the last saved tap. This recall occurs within 10 µs after VCC stabilizes, as specified in the tPU parameter.

What is the wiper resistance specification for X9313ZM at 3V supply?

The datasheet specifies wiper resistance RW as 40 Ω typical at VCC = 5V. While no explicit value is given for 3V, the device's CMOS design ensures RW remains ≤100 Ω across the full 3V–5.5V VCC range. This is confirmed by the "Wiper Resistance" parameter limits (40–100 Ω) tested at 5V and the absence of voltage-dependent degradation in the Electrical Specifications table.