STMicroelectronics STDVE001AQTR

Overview

STDVE001AQTR from STMicroelectronics is a 4-channel adaptive TMDS equalizer IC designed for HDMI 1.3 signal integrity restoration in high-definition video routing. It supports 3.4 Gbps per channel, 340 MHz clock operation, and automatic equalization for cables up to 25 m. Integrated 50 Ω input termination, I²C DDC repeater, and HPD logic enable plug-and-play HDMI interconnects in digital TVs and set-top boxes.

For engineers reviewing the STDVE001AQTR datasheet, STDVE001AQTR pinout, STDVE001AQTR application, or STDVE001AQTR equivalent, key selection criteria include its adaptive gain profile (up to 16 dB at 825 MHz), QFN48 package thermal performance, TMDS output skew <15 ps, ±5 kV HBM ESD rating on TMDS I/Os, and 5.3 V-tolerant DDC/HPD pins for robust system-level HDMI compliance.

Technical Context

The STDVE001AQTR implements a fully adaptive analog equalizer with four independent channels, each featuring selectable EQ_BOOST1/EQ_BOOST2 gain settings (0–16 dB) optimized for frequency-dependent cable loss compensation. Its current-mode TMDS output drivers deliver low-jitter, low-skew differential signals while maintaining tight input thresholds (±50 mV common-mode range) to minimize bit error rates.

It integrates an open-drain I²C DDC repeater supporting 0–400 kHz clocking, lock-up free bus operation, and 5.3 V-tolerant SDA/SCL/HPD I/Os. The device uses on-chip 50 Ω ±5% input terminations and supports power-down via OE_N to place outputs in high-impedance state-critical for hot-plug detection and EDID handshaking in HDMI sink applications.

Key Specifications

Pinout & Package

STDVE001AQTR is housed in a 7 mm × 7 mm QFN48 package with exposed thermal pad (package code QFN48), rated for –40 °C to +85 °C operation. The flow-through pinout minimizes trace length asymmetry and preserves signal integrity across all four TMDS channels.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar TMDS equalizer applications.

Compared with TI TDP142 and PI3HDX1204, STDVE001AQTR uniquely combines adaptive equalization, integrated DDC repeater, and on-chip 50 Ω termination in a single QFN48 package-reducing component count and simplifying HDMI 1.3 sink design validation.

Availability

STDVE001AQTR is available at Aetrix Electronics and suitable for high-definition digital TV, set-top box, and AV receiver applications requiring stable component supply and long-lifecycle support for consumer electronics manufacturing.

Supply support for STDVE001AQTR 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

STMicroelectronics is a global semiconductor leader specializing in analog, mixed-signal, and power management ICs for automotive, industrial, and consumer markets.

STDVE001AQTR belongs to ST's HDMI physical layer interface product line, engineered specifically to solve signal integrity challenges in HDMI 1.3 sink devices with long internal traces or external cabling.

FAQ

What is the function of the REXT pin?

The REXT pin connects to ground via a 4.7 kΩ ±1% precision resistor to set the output current of the TMDS drivers, ensuring compliance with HDMI 1.3 differential voltage specifications (peak-to-peak output of 800 mV). This external reference directly controls output amplitude and rise/fall times-deviation beyond tolerance causes noncompliance or excessive jitter.

Can STDVE001AQTR be used with HDMI 2.0 sources?

No-STDVE001AQTR is specified only for HDMI 1.3 (3.4 Gbps, 340 MHz). HDMI 2.0 requires 6 Gbps per channel and supports higher-frequency equalization profiles not implemented in this device. Attempting use with HDMI 2.0 sources results in signal degradation, link training failure, or unstable video output due to insufficient bandwidth and gain response.

How does the EQ_BOOST pin configuration affect performance?

EQ_BOOST1/EQ_BOOST2 select fixed gain curves: EQ=00 (default) optimizes for 1–25 m cables; EQ=11 provides maximum 16 dB boost at 825 MHz for >25 m runs. Incorrect selection causes over-equalization (ringing, increased jitter) or under-equalization (closed eye, bit errors)-verified via oscilloscope eye diagram testing per HDMI compliance test procedures.

Is the QFN48 package thermally adequate for continuous 3.4 Gbps operation?

Yes-the QFN48 package features an exposed thermal pad soldered to a dedicated PCB copper pour, enabling a junction-to-board thermal resistance (θ_JB) of 12 °C/W. At full load and 85 °C ambient, junction temperature remains below 115 °C, well within the device's 125 °C absolute maximum rating, as confirmed by ST's thermal simulation data in Doc ID 14855 Rev 5, Section 9.