Texas Instruments THS4501IDGN

Overview

THS4501IDGN from Texas Instruments is a high-performance fully differential amplifier optimized for precision analog signal conditioning in high-speed data acquisition systems. It delivers 370 MHz small-signal bandwidth, –90 dBc third-order intermodulation distortion at 30 MHz, and 2800 V/μs slew rate under ±5 V supply, enabling clean signal amplification for 14-bit ADC preamplifier stages in wireless receiver chains.

For engineers reviewing the THS4501IDGN datasheet, THS4501IDGN pinout, THS4501IDGN application, or THS4501IDGN equivalent, key selection criteria include its output common-mode voltage control (VOCM), wide input common-mode range extending to the negative rail, low 7 nV/√Hz input voltage noise, and compatibility with single-ended-to-differential conversion topologies requiring minimal harmonic distortion up to 40 MHz.

Technical Context

The THS4501IDGN employs a fully differential architecture with independent VOCM input for precise output common-mode level setting, supporting both single-ended and differential inputs. Its internal feedback network enables stable unity-gain operation with 0.1-dB flatness up to 150 MHz (±5 V) and maintains >70 dB CMRR across its specified input common-mode range.

Unlike the THS4500, the THS4501IDGN omits power-down functionality-confirmed by pin assignment (Pin 7 = NC, not PD) and electrical characteristics tables that exclude power-down parameters. It operates across dual ±5 V to ±7.5 V or single 4.5–15 V supplies, with quiescent current ranging from 12 mA (min, –40°C) to 34 mA (max, +85°C) under ±5 V.

Key Specifications

Pinout & Package

THS4501IDGN uses an 8-pin MSOP PowerPAD™ package (DGN), thermally enhanced with an exposed die pad for improved junction-to-board thermal resistance (θJC = 4.7°C/W). The PowerPAD must be soldered to a copper plane for reliable operation at full performance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with THS4501IDGN, THS4500IDGN adds power-down control at the cost of one dedicated pin and slightly higher active current, while THS4521IRGTR trades VOCM flexibility for superior noise and bandwidth-making THS4501IDGN optimal for adaptable, high-linearity ADC driver roles.

Availability

THS4501IDGN is available at Aetrix Electronics and suitable for wireless infrastructure, medical imaging, test equipment, and high-fidelity data acquisition systems requiring stable component supply, long-term lifecycle support, and consistent parametric performance across temperature.

Supply support for THS4501IDGN 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 and embedded processing technologies, with decades of expertise in high-speed amplifier design and manufacturing.

The THS4501IDGN belongs to TI's high-linearity fully differential amplifier product line, engineered specifically for demanding ADC driver, RF/IF signal chain, and precision instrumentation applications where distortion, noise, and bandwidth are critical.

FAQ

What is the maximum operating supply voltage for THS4501IDGN?

The THS4501IDGN supports a maximum supply voltage of ±7.5 V in dual-supply mode or 15 V in single-supply mode, as specified in the Absolute Maximum Ratings table. Exceeding these limits risks permanent damage. Operation at ±5 V is recommended for optimal linearity and thermal performance, with quiescent current remaining within 12–34 mA across the full temperature range.

Does THS4501IDGN support single-ended input configurations?

Yes, THS4501IDGN supports single-ended-to-differential conversion using standard resistor networks (e.g., 392 Ω feedback/resistor values per datasheet Figure 1). Its input common-mode range extends to the negative supply rail, allowing direct connection of ground-referenced sources without level shifters-verified by test conditions specifying "single-ended input" across all AC performance tables.

How does the VOCM pin function in THS4501IDGN?

The VOCM pin (Pin 3) directly controls the DC common-mode level of the differential outputs. When driven with a stable voltage (e.g., 2.5 V), it sets VOUT+ and VOUT− to swing symmetrically around that value. Input impedance is 25 kΩ || 1 pF, and the pin remains functional across the full supply range-enabling seamless interfacing with precision DACs or resistive dividers for adaptive ADC reference alignment.

Is THS4501IDGN pin-compatible with THS4500IDGN?

Yes, THS4501IDGN and THS4500IDGN share identical 8-pin MSOP PowerPAD™ (DGN) packaging and pin assignments, except Pin 7: THS4500IDGN uses PD (power-down), while THS4501IDGN leaves it as NC. This allows drop-in replacement in layouts where the PD pin is unused or tied appropriately-but note that THS4501IDGN lacks shutdown capability entirely.

What thermal considerations apply to THS4501IDGN's PowerPAD™ package?

The THS4501IDGN's DGN package requires soldering the exposed PowerPAD to a thermally robust PCB copper plane. With θJC = 4.7°C/W and θJA = 58.4°C/W, failure to connect the PowerPAD can cause junction temperatures to exceed +125°C at moderate loads-degrading distortion performance and reliability. TI technical briefs SLMA002 and SLMA004 detail recommended land patterns and via strategies for optimal thermal conduction.