Texas Instruments THS7327PHPRG4

Overview

THS7327PHPRG4 from Texas Instruments is a 3-channel RGBHV video buffer IC with I²C-configurable 2:1 input MUX, selectable 5th-order Butterworth low-pass filters (9/16/35/75 MHz or bypass), rail-to-rail output stage, and monitor pass-thru path. It operates from 2.7 V to 5 V, delivers 6 dB gain, supports AC/DC-coupled inputs with sync-tip clamp or offset shift, and targets professional video signal conditioning in projector and LCD/DLP front-end systems.

For engineers reviewing the THS7327PHPRG4 datasheet, THS7327PHPRG4 pinout, THS7327PHPRG4 application, or THS7327PHPRG4 equivalent, key selection criteria include filter corner frequency configurability per channel, I²C-controlled bias mode selection (AC-clamp, AC-bias, DC, DC+Offset), SAG correction capability on monitor outputs, and 500-MHz monitor path bandwidth with 1300 V/μs slew rate.

Technical Context

The THS7327PHPRG4 integrates three independent video amplifier channels, each with a programmable 5th-order Butterworth anti-aliasing filter and configurable input bias mode. Its I²C interface enables per-channel control of MUX selection, filter corner frequency, and bias configuration without external logic.

It features dual output paths per channel: a filtered ADC buffer path (with selectable LPF) and an unfiltered monitor pass-thru path (6 dB gain, 500 MHz BW, SAG correction). HV sync paths include adjustable Schmitt triggers for robust timing signal conditioning.

Key Specifications

Pinout & Package

THS7327PHPRG4 is housed in a 48-pin HTQFP PowerPAD™ package (PHP) with exposed thermal pad for enhanced heat dissipation. Pin count and layout match TI's THS7327 family standard footprint.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar video buffer applications.

Compared with THS7327PHPRG4, THS7314RGTT offers higher channel count but forfeits I²C configurability and monitor pass-thru flexibility, while LMH0387SQE/NOPB serves a fundamentally different domain (digital SDI vs. analog RGBHV), making neither a functional drop-in replacement.

Availability

THS7327PHPRG4 is available at Aetrix Electronics and suitable for projector input buffering, professional video switchers, LCD/DLP front-end interfaces, and medical imaging display systems requiring stable component supply, long-term manufacturability, and RoHS-compliant packaging.

Supply support for THS7327PHPRG4 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

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and connectivity technologies, with decades of expertise in high-performance video signal conditioning.

The THS7327PHPRG4 belongs to TI's precision video buffer product line, engineered specifically for professional and industrial RGBHV video systems requiring flexible filtering, low-power operation, and robust sync handling.

FAQ

What input bias modes does the THS7327PHPRG4 support, and how are they selected?

The THS7327PHPRG4 supports four input bias modes: AC-coupled with sync-tip clamp, AC-coupled with fixed bias, DC-coupled, and DC-coupled with offset shift. All modes are selected per channel via I²C register writes - no external components required. For example, setting register 0x03 bit[1:0] = 00 selects AC-sync-tip clamp for Channel 1, enabling automatic DC restoration on composite or Y' signals with embedded sync.

Does the THS7327PHPRG4 provide separate outputs for ADC buffering and monitor display?

Yes, the THS7327PHPRG4 provides two independent output paths per channel: a filtered ADC buffer output (with selectable LPF) and an unfiltered monitor pass-thru output. The monitor path delivers 6 dB gain, 500 MHz bandwidth, and SAG correction - ideal for driving display monitors directly - while the ADC path applies the configured filter for digitization. Both paths operate simultaneously and are electrically isolated.

What is the maximum small-signal bandwidth of the THS7327PHPRG4 when the filter is bypassed?

When the low-pass filter is bypassed, the THS7327PHPRG4 achieves a small-signal bandwidth of 500 MHz (–3 dB) on both the ADC buffer and monitor output paths under 3.3 V operation. This enables faithful reproduction of ultra-high-resolution analog video signals such as UXGA (1600×1200) and QXGA (2048×1536) without high-frequency roll-off.

How does the THS7327PHPRG4 handle horizontal and vertical sync signals?

The THS7327PHPRG4 includes dedicated HV sync paths with adjustable Schmitt triggers. Each sync input (H-Sync A/B, V-Sync A/B) routes through a comparator whose threshold is set by an external voltage on the SCHMITT-TRIGGER ADJ pin (pin 48), allowing precise hysteresis tuning for noisy environments. Propagation delay is 6.5 ns, and skew to associated video outputs is ≤5 ns.

Can the THS7327PHPRG4 operate from a 3.3 V supply, and what is its typical power consumption?

Yes, the THS7327PHPRG4 operates over 2.7 V to 5 V and is fully specified at 3.3 V. At 3.3 V with all channels active in DC+shift mode, typical quiescent current is 100 mA on the analog supply (VA) and 0.65 mA on the digital supply (VDD), resulting in total power dissipation of approximately 330 mW - well within thermal limits of the HTQFP PowerPAD package.