Texas Instruments THS4032CDGN

Overview

THS4032CDGN from Texas Instruments is a dual-channel, ultra-low-noise (1.2nV/√Hz), high-speed voltage-feedback operational amplifier with 100MHz bandwidth (G = 2, –3dB), 100V/μs slew rate, and ±15V supply capability. It delivers 200mA output drive per channel and is optimized for precision analog signal conditioning in data acquisition, ultrasound imaging, and SAR ADC buffering.

For engineers reviewing the THS4032CDGN datasheet, THS4032CDGN pinout, THS4032CDGN application, or THS4032CDGN equivalent, key selection criteria include input voltage noise density, THD at 1MHz (–90dBc into 1kΩ), channel-to-channel crosstalk (–61dBc), thermal performance in HVSSOP-8 (R_θJA = 52.0°C/W), and dual-amplifier integration for space-constrained signal chains.

Technical Context

The THS4032CDGN employs a complementary bipolar 30V process enabling GHz f_T transistors, delivering unity-gain stability with 120MHz bandwidth and 70ns (0.1%) settling time. Its voltage-feedback architecture supports both single-supply (9–32V) and split-supply (±4.5V to ±16V) operation.

Each channel features matched input stage design with 2MΩ input resistance and 1.5pF input capacitance, while the DGN package includes an exposed thermal pad connected to V_CC– or ground for optimal junction-to-board thermal resistance (R_θJB = 24.5°C/W).

Key Specifications

Pinout & Package

The THS4032CDGN is housed in an 8-pin HVSSOP (DGN) package with 3.0mm × 4.9mm footprint and exposed thermal pad for enhanced thermal dissipation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-speed, low-noise amplifier applications.

Compared with THS4032CDGN, THS4031CDGN provides identical per-channel performance in a smaller footprint but doubles layout complexity for dual-path designs, while OPA2837IRUGR trades 100mA output drive and –61dBc crosstalk for 30% lower quiescent current-making it viable only in low-load, power-sensitive applications.

Availability

THS4032CDGN is available at Aetrix Electronics and suitable for ultrasound scanner front-ends, high-speed data acquisition systems, and video line driver applications requiring stable component supply and long-term production continuity.

Supply support for THS4032CDGN 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 product line was designed specifically for demanding low-noise, wide-bandwidth applications such as medical imaging, test equipment, and communications infrastructure-prioritizing voltage noise, distortion, and drive strength over power efficiency.

FAQ

What is the maximum operating temperature range for the THS4032CDGN?

The THS4032CDGN is rated for operation from –40°C to +85°C (I-suffix grade). This extended industrial temperature range ensures reliable performance in medical ultrasound systems and factory-floor DAQ equipment where ambient temperatures exceed standard commercial limits. Thermal metrics confirm R_θJA = 52.0°C/W in the HVSSOP-8 package, enabling full 7.5mA/channel operation at 85°C ambient with proper PCB copper area under the thermal pad.

Does the THS4032CDGN support single-supply operation?

Yes, the THS4032CDGN supports single-supply operation from 9V to 32V. Its input common-mode range extends to within 1.2V of the negative rail (e.g., 0V in single-supply mode), and output swing reaches within 1.4V of each rail. For example, with V_CC = +10V and GND = 0V, the device delivers ±3.4V output swing into 1kΩ, making it suitable for 10-bit+ ADC drivers in portable instrumentation without level-shifting circuitry.

How does the THS4032CDGN's crosstalk specification impact dual-channel designs?

The THS4032CDGN specifies –61dBc channel-to-channel crosstalk at 1MHz, meaning a 1V signal on Channel 1 induces ≤0.89mV interference on Channel 2. This level of isolation is sufficient for independent I/Q signal paths in vector signal transceivers and dual-sensor DAQ systems where inter-channel leakage must remain below 0.1% of full-scale. Layout best practices-such as separating input traces and using ground guard rings-help maintain this spec in production PCBs.

Can the THS4032CDGN drive a 150Ω coaxial cable directly?

Yes, the THS4032CDGN delivers 200mA output current per channel and sustains ±12.9V swing into 250Ω loads (±12V into 150Ω at ±15V supplies). When driving 75Ω or 150Ω cables, TI recommends adding a 20Ω series isolation resistor at the output to prevent instability from capacitive loading-this preserves signal integrity while maintaining >95% power transfer to the cable. The device's 100V/μs slew rate ensures minimal distortion on fast video or pulse waveforms.

What is the purpose of the thermal pad on the THS4032CDGN package?

The exposed thermal pad on the THS4032CDGN's HVSSOP-8 package reduces junction-to-board thermal resistance to 24.5°C/W. To maximize heat dissipation, the pad must be soldered to a large copper plane connected to V_CC– or ground-TI confirms it can be tied to any potential between V_CC+ and V_CC–. This feature allows continuous operation at full 7.5mA/channel supply current even at 85°C ambient, preventing thermal shutdown and ensuring long-term reliability in sealed medical enclosures.