Texas Instruments THS4032CDR

Overview

THS4032CDR from Texas Instruments is a dual-channel, voltage-feedback operational amplifier optimized for low-noise, high-speed signal conditioning in precision analog systems. It delivers 100MHz bandwidth (G = 2, –3dB), 100V/μs slew rate, 1.2nV/√Hz input voltage noise, –90dBc THD at 1MHz (RL = 1kΩ), and ±16V supply operation - enabling high-fidelity buffering of SAR ADCs and wideband video signals.

For engineers reviewing the THS4032CDR datasheet, THS4032CDR pinout, THS4032CDR application, or THS4032CDR equivalent, key selection criteria include its dual-channel SOIC-8 package, rail-to-rail output swing capability (±13.6V @ ±15V supplies), channel-to-channel crosstalk of –61dBc, and compatibility with ±4.5V to ±16V split supplies or 9V–32V single supplies.

Technical Context

The THS4032CDR employs a complementary bipolar 30V process with GHz f_T transistors, enabling voltage-feedback architecture with unity-gain stability and 120MHz bandwidth. Its internal compensation prioritizes bandwidth and slew rate but requires external isolation resistors (>20Ω) when driving capacitive loads >10pF to maintain phase margin.

Each channel features matched input bias current (9–20μA typ), 2MΩ input resistance, and operates across –40°C to +85°C. The device supports both single- and split-supply configurations, with PSRR >85dB and CMRR >85dB over full temperature range - critical for mixed-signal data acquisition front-ends.

Key Specifications

Pinout & Package

THS4032CDR is packaged in an 8-pin SOIC (D package), 4.9mm × 6mm body size, with exposed thermal pad only in HVSSOP variants - not applicable to CDR suffix. Pin functions are electrically validated per TI SLOS224L Rev L.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-speed op-amp applications.

Compared with THS4032CDR, THS4032IDR offers identical electrical performance with extended temperature rating, while OPA2691IDR trades higher power and cost for greater bandwidth - making THS4032CDR optimal for cost-sensitive, 100MHz-class precision analog systems.

Availability

THS4032CDR is available at Aetrix Electronics and suitable for video amplification, ultrasound signal conditioning, active filter design, and high-resolution data acquisition requiring stable component supply and long-term manufacturability.

Supply support for THS4032CDR 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-performance op-amps and precision signal-chain solutions.

The THS403x family was designed for low-noise, wide-bandwidth analog signal conditioning in communications, medical imaging, and test equipment - targeting applications where voltage noise, distortion, and speed jointly define system resolution.

FAQ

What is the maximum recommended capacitive load for THS4032CDR without external isolation?

The THS4032CDR is internally compensated for optimal bandwidth and slew rate, but stability degrades with capacitive loads >10pF directly on the output. For reliable operation, always use a ≥20Ω series isolation resistor between THS4032CDR output and any capacitance exceeding 10pF - including PCB trace capacitance and connector parasitics. This preserves phase margin and prevents high-frequency ringing.

Does THS4032CDR support single-supply operation, and what is the minimum voltage?

Yes, THS4032CDR supports true single-supply operation from 9V to 32V. At 9V, it delivers usable performance (e.g., 90MHz bandwidth, 80V/μs slew rate), though specifications are guaranteed from ±4.5V (9V total) to ±16V (32V total). Input common-mode range extends to within 1.2V of rails, enabling direct interfacing with single-supply ADCs and sensors.

How does THS4032CDR's channel-to-channel crosstalk affect dual-channel I/Q signal processing?

THS4032CDR specifies –61dBc crosstalk at 1MHz, meaning leakage from one channel to the other is ≤0.09% of signal amplitude. In I/Q demodulation, this limits image rejection to ~61dB - sufficient for medium-performance SDR and ultrasound beamforming where >55dB image suppression is required. For higher rejection, guard traces and separate ground planes are recommended alongside THS4032CDR.

Can THS4032CDR drive a 150Ω load to ±12V with ±15V supplies?

Yes. With ±15V supplies and RL = 150Ω, THS4032CDR delivers ±12.9V output swing (typical), meeting ±12V requirement with 0.9V headroom. Output current capability exceeds 200mA (typ), well above the 80mA needed for ±12V into 150Ω. Ensure proper 0.1μF local decoupling at each supply pin and minimize trace inductance for stable high-current delivery.

What is the input offset voltage drift specification for THS4032CDR over temperature?

THS4032CDR has a maximum input offset voltage drift of 2μV/°C across the full operating temperature range (0°C to +70°C). At 25°C, typical V_OS is 0.3mV, rising to ≤3mV over temperature - making it suitable for precision DC-coupled applications like sensor signal conditioning where drift-induced errors must stay below 10μV/°C.