Texas Instruments THS4504DGK

Overview

THS4504DGK from Texas Instruments is a wideband, low-distortion, fully differential amplifier with power-down capability, designed for high-fidelity signal conditioning in ADC driver and RF receiver chain applications. It delivers 260 MHz small-signal bandwidth, –73 dBc third-order intermodulation distortion at 30 MHz, and 1800 V/µs slew rate under ±5 V supply, enabling 12-bit accuracy through 40 MHz.

For engineers reviewing the THS4504DGK datasheet, THS4504DGK pinout, THS4504DGK application, or THS4504DGK equivalent, key selection criteria include its power-down functionality (PD pin), output common-mode voltage control (VOCM), differential output swing of ±7.4 V (±5 V supply), and MSOP-8 PowerPAD™ package thermal performance.

Technical Context

The THS4504DGK implements a fully differential architecture optimized for single-ended-to-differential conversion and active filtering, with input common-mode range extended to include the negative rail (–5.1 V min at ±5 V). Its VOCM circuitry provides precise 200 MHz bandwidth control over output common-mode voltage, supporting flexible interface to ADCs with varying reference levels.

Power-down mode reduces quiescent current to ≤1.2 mA while maintaining high-impedance outputs and preserving input bias characteristics. The device operates across ±5 V, ±7.5 V, or single 5–15 V supplies, with PSRR ≥70 dB and CMRR ≥70 dB over temperature.

Key Specifications

Pinout & Package

THS4504DGK is housed in an 8-pin MSOP package with exposed thermal pad (PowerPAD™), optimized for compact layout and enhanced thermal dissipation (θJA = 260°C/W, θJC = 54.2°C/W).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar fully differential amplifier applications.

Compared with THS4505DGK and THS4521RGTT, the THS4504DGK uniquely combines power-down control, VOCM programmability, and MSOP-8 thermal performance-making it optimal for portable, battery-sensitive, or thermally dense 12-bit data acquisition systems.

Availability

THS4504DGK is available at Aetrix Electronics and suitable for wireless infrastructure, high-speed test equipment, and medical imaging systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for THS4504DGK 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 signal chain solutions.

The THS4504DGK belongs to TI's high-speed differential amplifier product line, engineered specifically for demanding ADC driver, RF receiver, and precision instrumentation applications requiring wide bandwidth and ultra-low distortion.

FAQ

What is the primary function of the PD pin on the THS4504DGK?

The PD (Power-Down) pin on the THS4504DGK is an active-low control input that disables the amplifier core when driven below the disable threshold (–4.3 V for ±5 V supply or 0.7 V for 5 V supply), reducing quiescent current to ≤1.2 mA. When not asserted, the THS4504DGK remains operational by default. This feature enables dynamic power management in battery-powered or thermally sensitive THS4504DGK-based systems without requiring external shutdown circuitry.

How does the VOCM pin affect THS4504DGK performance in ADC interface applications?

The VOCM pin on the THS4504DGK directly sets the DC common-mode voltage of the differential outputs, allowing precise alignment with the input reference range of downstream ADCs (e.g., 2.5 V or 1.25 V). With 200 MHz small-signal bandwidth and ±0.1 V/V gain accuracy, the VOCM circuit maintains output level integrity even under fast-changing reference conditions-eliminating need for external level-shifters and reducing THS4504DGK system component count and board area.

What is the maximum differential output voltage swing of the THS4504DGK under ±5 V supply?

Under ±5 V supply conditions, the THS4504DGK delivers a minimum differential output voltage swing of ±7.4 V into a 1 kΩ load across the full operating temperature range (–40°C to +85°C). This corresponds to a 14.8 VPP differential signal, sufficient to drive most 12-bit and 14-bit ADCs at full scale while maintaining linearity and low harmonic distortion per the THS4504DGK datasheet specifications.

Can the THS4504DGK operate from a single 5 V supply?

Yes, the THS4504DGK supports single-supply operation from 5 V to 15 V. At 5 V supply, it achieves 210 MHz small-signal bandwidth, 900 V/µs slew rate, and ±3.3 V differential output swing into 1 kΩ (referenced to 2.5 V). Input common-mode range shifts to –0.1 V to +2.0 V, enabling compatibility with ground-referenced sources. All THS4504DGK AC and DC specifications remain valid across this range per the official Texas Instruments datasheet.

What package type does the THS4504DGK use, and why is it significant?

The THS4504DGK uses an 8-pin MSOP package with an exposed thermal pad (PowerPAD™), designated DGK in TI's ordering nomenclature. This package provides superior thermal performance (θJC = 54.2°C/W) versus standard SOIC-8, enabling higher sustained output power in compact layouts. The PowerPAD™ also improves high-frequency stability and reduces package inductance-critical for maintaining THS4504DGK's 260 MHz bandwidth and low distortion in real-world PCB implementations.