Diodes Incorporated PI2MEQX2505ZHEX

Overview

PI2MEQX2505 from Diodes Incorporated is a 4-lane MIPI D-PHY 1.2-compliant ReDriver IC designed to regenerate high-speed CSI-2/DSI signals between camera modules and application processors. It supports 2.5Gbps per lane, operates from –40°C to +85°C, features programmable 3/6/9dB receiver equalization and 225–275mV output swing, and enables ULPS/LP power-state transitions in notebook, tablet, and clamshell camera interfaces.

For engineers reviewing the PI2MEQX2505 datasheet, PI2MEQX2505 pinout, PI2MEQX2505 application, or PI2MEQX2505 equivalent, this page delivers verified electrical parameters, I²C-configurable HS/LP timing control, thermal pad package details, and real-world mobile imaging interface design guidance - not generic timing or signal conditioning claims.

Technical Context

The PI2MEQX2505 implements a fully differential 100Ω CML input/output architecture compliant with MIPI D-PHY 1.2 for both CSI-2 and DSI protocols. It processes four data lanes plus clock (DA0–DA3 + DAC) and regenerates them as DB0–DB3 + DBC outputs with configurable equalization, pre-emphasis (0/1/3dB), and edge rate (150/200/250ps).

Its dual-mode operation includes HS mode at up to 2.5Gbps with sub-1ns propagation delay and LP mode supporting bi-directional backchannel signaling. Power management integrates activity detection to enter sub-mW shutdown during ULPS and LP states, with VREG_OUT providing internal 1.2V regulation.

Key Specifications

Pinout & Package

Package: 28-contact TQFN (ZH), 5.5 × 3.5 mm, 0.5 mm pitch, exposed thermal pad (GND).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar MIPI D-PHY ReDriver applications.

Compared with PI2MEQX2505A, the original offers identical D-PHY functionality at lower cost but reduced ESD margin; versus SN65DP159RSBT, it delivers native MIPI compliance, 40% lower power, and 30% smaller footprint - making it optimal for space-constrained mobile imaging.

Availability

PI2MEQX2505 is available at Aetrix Electronics and suitable for notebook PC camera interfaces, tablet dual-camera modules, clamshell display hubs, and industrial inspection systems requiring stable component supply across multi-year production cycles.

Supply support for PI2MEQX2505 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

Diodes Incorporated is a global semiconductor company specializing in discrete, analog, and mixed-signal solutions for power management, signal integrity, and connectivity applications.

The PI2MEQX2505 belongs to Diodes' MIPI ReDriver product line, engineered specifically to solve signal degradation in high-speed mobile imaging and display interfaces - not general-purpose signal conditioning.

FAQ

What is the function of the VREG_OUT pin?

VREG_OUT provides a regulated 1.2V output used internally by the PI2MEQX2505's analog circuitry. It must be decoupled with a 0.1 µF capacitor to GND and connected directly to the VDD pin via a minimum 10-mil PCB trace. This rail is not intended for external loads and cannot be used to power other components.

Can PI2MEQX2505 operate with only two active data lanes?

Yes - the device supports partial-lane operation. When fewer than four lanes are used, unused DAxP/N and DBxP/N pins must be tied to GND (inputs) or left floating (outputs) per datasheet Table 1. Power consumption drops to 80–120mW in 2-lane + clock mode, confirmed in Electrical Characteristics section on page 9.

How is receiver equalization configured - pin-strapping or I²C?

Equalization level (3/6/9dB) is set at power-up by sampling the EQ/SCL pin state on the rising edge of RSTN. It can also be dynamically updated via I²C register 02h (RXEQ bits), enabling runtime adaptation to changing channel conditions without hardware reset.

Does PI2MEQX2505 support MIPI DSI and CSI-2 simultaneously?

No - it operates exclusively in one protocol mode per implementation. The same physical interface handles either CSI-2 (camera-to-processor) or DSI (processor-to-display), determined by system-level protocol selection; no internal mode switching or dual-role capability is provided.