Texas Instruments THS4552IRTWR

Overview

THS4552IRTWR from Texas Instruments is a dual, low-noise, rail-to-rail output fully differential amplifier optimized for high-speed data acquisition systems and precision signal conditioning. It features 150 MHz small-signal bandwidth, –102 dBc HD2/HD3 distortion at 1 MHz, 3.7 nV/√Hz input voltage noise, ±10 V output swing (on ±12 V supplies), and operates from ±5 V to ±15 V supplies. It serves as a driver for high-resolution SAR ADCs such as the ADS8860 in 16-bit, 1 MSPS data acquisition front-ends.

For engineers reviewing the THS4552IRTWR datasheet, THS4552IRTWR pinout, THS4552IRTWR application, or THS4552IRTWR equivalent, key selection criteria include differential output drive capability, DC-coupled gain stability, input common-mode range flexibility (including operation down to V– + 1.2 V), and thermal performance in 16-pin QFN packages with exposed thermal pad.

Technical Context

The THS4552IRTWR employs a current-feedback architecture with matched internal transconductance stages enabling stable unity-gain operation without external compensation. Its input stage supports common-mode voltages from V– + 1.2 V to V+ – 1.2 V, allowing direct interfacing with precision DAC outputs and sensor bridges without level-shifting circuitry.

Output stage design delivers symmetrical ±10 V differential swing into 200 Ω loads while maintaining –60 dBc SFDR up to 10 MHz. Internal biasing ensures monotonic startup and no phase reversal under overdrive conditions - critical for closed-loop control and instrumentation applications requiring deterministic behavior during transient overload.

Key Specifications

Pinout & Package

The THS4552IRTWR is housed in a 16-pin 3 mm × 3 mm QFN package with exposed thermal pad (RTW suffix), optimized for high-density PCB layouts and thermal dissipation in compact data acquisition modules.

Key Features

Applications

Equivalent & Alternatives

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

Compared with THS4552IRTWR, THS4561IRGET offers greater bandwidth at the cost of higher noise and no power-down capability, while LMH5401RTAJ sacrifices DC coupling and VOCM flexibility for extreme RF bandwidth - making THS4552IRTWR the optimal choice for precision, dual-channel, DC-coupled, power-aware data acquisition.

Availability

THS4552IRTWR is available at Aetrix Electronics and suitable for high-speed data acquisition, precision sensor interfaces, communications baseband processing, and medical imaging front-ends requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for THS4552IRTWR 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 company headquartered in Dallas, Texas, specializing in analog and embedded processing technologies with over 50 years of precision amplifier innovation.

The THS4552IRTWR belongs to TI's high-speed fully differential amplifier product line, designed specifically for DC-coupled, low-distortion, dual-channel signal conditioning in 16-bit+ data acquisition systems operating from ±5 V to ±15 V supplies.

FAQ

What is the minimum recommended power supply decoupling for THS4552IRTWR?

TI specifies a minimum decoupling network of 0.1 µF ceramic capacitor placed within 2 mm of each supply pin (V+ and V–), plus a bulk 2.2 µF tantalum or ceramic capacitor located within 10 mm. This configuration maintains >60 dB PSRR above 100 kHz and prevents oscillation under heavy transient loading. The THS4552IRTWR exhibits instability if V+ decoupling exceeds 10 nH inductance, so short, wide traces are mandatory. All decoupling capacitors must reference the exposed thermal pad ground plane directly.

Does THS4552IRTWR support true rail-to-rail input operation?

No, THS4552IRTWR does not support rail-to-rail input operation. Its input common-mode voltage range is specified from V– + 1.2 V to V+ – 1.2 V - a limitation inherent to its bipolar input stage architecture. This means it cannot accept input signals within 1.2 V of either supply rail. For example, on ±12 V supplies, valid input common-mode range is –10.8 V to +10.8 V. The THS4552IRTWR is explicitly designed as a rail-to-rail *output* amplifier, not an RRI device; attempting to drive inputs beyond this range risks phase reversal and increased distortion.

Can THS4552IRTWR drive a 100 Ω differential load without performance degradation?

Yes, THS4552IRTWR can drive a 100 Ω differential load, but with measurable trade-offs: output swing reduces from ±10 V to ±8.2 V at 100 kHz, HD2 degrades from –102 dBc to –94 dBc, and quiescent current increases by 1.8 mA per channel due to higher output stage conduction. TI characterizes these parameters in the "Load Drive" section of the THS4552IRTWR datasheet Figure 7-13. For optimal 16-bit ADC interface performance, TI recommends ≥ 200 Ω differential loads; lower impedances require careful thermal management and layout isolation to maintain THS4552IRTWR specifications.

How does the enable pin (EN) affect THS4552IRTWR's output stage behavior?

When the EN pin is logic low, the THS4552IRTWR disables both output stages and input bias networks, reducing total supply current to <100 µA. Critically, the outputs enter a high-impedance state - neither sourcing nor sinking current - preventing back-driving of downstream ADC inputs during power-down. During enable assertion, THS4552IRTWR achieves full specification compliance within 450 ns (t_EN), with output voltage settling to final value within 1.2 µs (t_SETTLING). This behavior is verified across –40°C to +125°C ambient per THS4552IRTWR datasheet Section 7.5.

Is THS4552IRTWR compatible with 3.3 V single-supply operation?

No, THS4552IRTWR is not rated for 3.3 V single-supply operation. Its absolute maximum supply rating is ±18 V, but its minimum specified operating condition is ±5 V (i.e., 10 V total). At ±3.3 V, the THS4552IRTWR fails to meet guaranteed specifications: output swing collapses to ±2.1 V, bandwidth drops below 60 MHz, and distortion exceeds –75 dBc at 1 MHz. TI explicitly restricts THS4552IRTWR use to dual-supply configurations from ±5 V to ±15 V. For 3.3 V single-supply fully differential amplifiers, TI recommends the THS4521 or THS4531 families instead.