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Texas Instruments THS4031IDGNG4
- Part No.:
- THS4031IDGNG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
THS4031IDGNG4.pdf
- Description:
- IC OPAMP VFB 1 CIRCUIT 8HVSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,241
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Product details
Overview
THS4031IDGNG4 from Texas Instruments is a single-channel, ultra-low-noise (1.2nV/√Hz), high-speed voltage-feedback operational amplifier in an 8-pin HVSSOP package. It delivers 100MHz bandwidth at G = 2, 100V/μs slew rate, and –96dBc THD at 1MHz into 1kΩ - optimized for precision analog signal conditioning in data acquisition and ADC driver applications.
For engineers reviewing the THS4031IDGNG4 datasheet, THS4031IDGNG4 pinout, THS4031IDGNG4 application, or THS4031IDGNG4 equivalent, key selection criteria include input offset voltage drift (2μV/°C), output drive capability (200mA), supply range (±4.5V to ±16V), offset nulling support, and thermal performance in the DGN package (RθJA = 60.7°C/W).
Technical Context
The THS4031IDGNG4 employs a 30V complementary bipolar process with GHz fT NPN/PNP transistors, enabling unity-gain stability and 120MHz unity-gain bandwidth. Its voltage-feedback architecture provides predictable gain-bandwidth tradeoffs and fast settling (70ns to 0.1%) without requiring external compensation.
It supports both split-supply (±4.5V to ±16V) and single-supply (9V to 32V) operation. The device includes dedicated offset null pins (1 and 8) for fine-tuning input offset voltage - a feature absent in the dual-channel THS4032 - and features internal compensation optimized for wideband performance with minimal phase margin degradation under typical loads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Bandwidth (–3dB) | 100MHz at G = 2; enables accurate amplification of signals up to ~70MHz fundamental frequency in video or DAQ systems. |
| Slew Rate | 100V/μs; supports full-scale 20Vpp step response in ≤200ns without slewing distortion. |
| Voltage Noise | 1.2nV/√Hz @ >10kHz; critical for preserving SNR when amplifying low-level sensor or ADC reference signals. |
| THD | –96dBc @ 1MHz, RL = 1kΩ; ensures minimal harmonic contamination in high-fidelity signal chains. |
| Input Offset Voltage | 0.3mV (typ), 3mV (max over temp); reduces DC error in precision gain stages and active filter DC bias points. |
| Output Drive | 200mA (typ); drives heavy loads including 150Ω video lines or SAR ADC input networks without gain compression. |
| Supply Range | ±4.5V to ±16V; accommodates industrial ±5V, ±12V, and ±15V rails while maintaining full dynamic range. |
Pinout & Package
The THS4031IDGNG4 is housed in an 8-pin HVSSOP (DGN) package measuring 3.0mm × 4.9mm, with exposed thermal pad for enhanced heat dissipation (RθJB = 33°C/W). The thermal pad must be connected to a large copper plane and may be tied to any potential between VCC+ and VCC−.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 8 NULL | Offset adjust input | Connect external potentiometer wiper to VCC− to null input offset voltage - essential for DC-critical instrumentation front-ends. |
| 2 IN– | Inverting input | Differential input node; used in inverting configurations or as feedback path in transimpedance amplifiers. |
| 3 IN+ | Noninverting input | High-impedance (2MΩ) input node; accepts low-current sensor signals or reference voltages directly. |
| 4 VCC− | Negative supply rail | Must be ≥ –16V; supplies internal bias circuitry and sets lower output swing limit (±13.6V max into 1kΩ). |
| 5 NC | No connection | Internally unconnected; leave floating or tie to ground only if required by PCB layout for symmetry/stability. |
| 6 OUT | Amplifier output | Capable of sourcing/sinking 200mA; requires series isolation resistor (>20Ω) when driving >10pF capacitive loads. |
| 7 VCC+ | Positive supply rail | Must be ≤ +16V; determines upper output swing limit and power consumption (7.5mA/channel @ ±15V). |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low voltage noise | 1.2nV/√Hz enables high-resolution amplification of microvolt-level signals from piezoelectric sensors or photodiode TIA stages. |
| Offset nulling pins | Pins 1 and 8 allow sub-100μV residual offset tuning - critical for DC-coupled medical imaging or precision calibration circuits. |
| High output current drive | 200mA capability supports direct driving of 75Ω video lines, ADC input RC networks, or active filter feedback paths without buffer stages. |
| Unity-gain stable | 120MHz unity-gain bandwidth permits use in gain-of-1 buffers and wideband active filters without external compensation components. |
| Low THD into high-Z load | –96dBc @ 1MHz into 1kΩ preserves spectral purity in RF sampling front-ends and spectrum analyzer IF stages. |
Applications
| High-Performance ADC Driver | Ultrasound Signal Conditioning |
|---|---|
Use Scenario: Driving the input of a 16-bit SAR ADC (e.g., ADS8422) with buffered analog sensor outputs requiring minimal added noise and distortion. IC Role / Device Role / Timing Role: Precision voltage buffer and gain stage placed immediately before ADC sample-and-hold; provides low-impedance drive, bandwidth-matched settling, and noise floor control. Use Value: Enables full 16-bit ENOB by contributing only 1.2nV/√Hz input-referred noise and –96dBc THD - directly preserving ADC dynamic range. | Use Scenario: Amplifying weak echo signals from ultrasound transducers in portable or cart-based imaging systems. IC Role / Device Role / Timing Role: First-stage low-noise amplifier in receive beamformer; operates in time-gain compensation (TGC) path with variable gain control. Use Value: Delivers 100MHz bandwidth and 1.2nV/√Hz noise to resolve fine tissue structures while maintaining pulse fidelity across 1–15MHz diagnostic bands. |
| Video Line Driver | Active Filter Building Block |
Use Scenario: Driving 75Ω coaxial video cables in broadcast equipment or test instrumentation with minimal differential gain/phase error. IC Role / Device Role / Timing Role: Final-stage line driver in composite or component video signal chain; handles 0–10MHz baseband bandwidth with flat group delay. Use Value: Achieves 0.015% differential gain error and 0.025° phase error at ±15V supply - meeting SMPTE RP 168 and ITU-R BT.601 specifications. | Use Scenario: Implementing high-Q, low-drift active filters (e.g., Sallen-Key, MFB) in communications or measurement equipment. IC Role / Device Role / Timing Role: Core gain block in 2nd-order low-pass or band-pass filter; configured for G = 1 to 10 with precise pole placement. Use Value: 100MHz GBW and low input bias current (9μA typ) enable stable filter responses up to 10MHz with <0.1dB passband ripple. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed, low-noise op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| THS4031IDR | Same silicon, SOIC-8 (D) package; RθJA = 124.5°C/W vs. 60.7°C/W for DGN; no thermal pad. | Preferred where board space allows larger footprint and thermal management uses ambient convection or heatsinking. | Select THS4031IDR for cost-sensitive, non-thermally constrained designs; THS4031IDGNG4 for compact, high-power-density layouts. |
| OPA656U | Lower noise (0.92nV/√Hz), but narrower bandwidth (500MHz GBW, 230MHz –3dB), higher supply current (12.5mA), no offset null pins. | Better for ultra-low-noise DC-coupled preamps; unsuitable where THS4031IDGNG4's 100MHz flat bandwidth and nulling are required. | Choose OPA656U only when voltage noise is primary constraint and offset trimming is handled externally. |
Compared with THS4031IDR, the THS4031IDGNG4 offers superior thermal performance and smaller footprint; compared with OPA656U, it trades 0.28nV/√Hz noise reduction for guaranteed 100MHz bandwidth, integrated offset nulling, and lower quiescent current - making it optimal for wideband, thermally constrained, DC-precision applications.
Availability
THS4031IDGNG4 is available at Aetrix Electronics and suitable for high-speed data acquisition, medical ultrasound front-ends, and professional video infrastructure requiring stable component supply, long-term manufacturability, and TI-qualified automotive-grade traceability.
Supply support for THS4031IDGNG4 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 op-amps and signal-chain solutions.
The THS403x product line was designed specifically for wideband, low-distortion, low-noise analog signal conditioning - targeting applications such as high-resolution data acquisition, medical imaging, video infrastructure, and communications test equipment.
FAQ
What is the maximum operating supply voltage for the THS4031IDGNG4?
The THS4031IDGNG4 supports dual-supply operation from ±4.5V to ±16V (32V total), or single-supply from 9V to 32V. Exceeding ±16V on either rail violates absolute maximum ratings and risks permanent damage. At ±15V, it delivers full specified performance including 100MHz bandwidth and 200mA output drive.
Does the THS4031IDGNG4 require external compensation for stability?
No - the THS4031IDGNG4 is internally compensated and unity-gain stable, with a 120MHz unity-gain bandwidth. However, when driving capacitive loads >10pF, a series isolation resistor (≥20Ω) must be placed between the output pin and the load to maintain phase margin and prevent ringing or oscillation.
How is the offset nulling function implemented on the THS4031IDGNG4?
The THS4031IDGNG4 provides dedicated NULL pins (1 and 8) for offset adjustment. A 10kΩ potentiometer is connected across pins 1 and 8, with its wiper tied to VCC−. This configuration allows fine-tuning of input offset voltage down to <100μV, which is essential for DC-critical applications like precision instrumentation amplifiers.
What thermal considerations apply to the THS4031IDGNG4's HVSSOP package?
The THS4031IDGNG4 in the DGN package features an exposed thermal pad that must be soldered to a large PCB copper plane for optimal thermal performance. With RθJA = 60.7°C/W, it achieves significantly better junction-to-ambient dissipation than the SOIC version (124.5°C/W), enabling reliable operation at full 7.5mA supply current and 200mA output drive without derating.
Can the THS4031IDGNG4 drive a 150Ω load at full bandwidth?
Yes - the THS4031IDGNG4 is fully characterized into 150Ω loads, delivering 100MHz bandwidth (G = 2), 100V/μs slew rate, and –81dBc THD at 1MHz. Its 200mA output current capability ensures linear operation into 150Ω, supporting standard video line driving and high-speed DAC output buffering without gain compression or distortion.
THS4031IDGNG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- Voltage Feedback
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 100V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 100 MHz
- Current - Input Bias:
- 3 µA
- Voltage - Input Offset:
- 500 µV
- Current - Supply:
- 8.5mA
- Current - Output / Channel:
- 90 mA
- Voltage - Supply Span (Min):
- 9 V
- Voltage - Supply Span (Max):
- 32 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-HVSSOP
THS4031IDGNG4 FAQ
1.How can I place an order for THS4031IDGNG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for THS4031IDGNG4 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for THS4031IDGNG4 reliable?
The price and inventory of THS4031IDGNG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for THS4031IDGNG4 is usually 5 days.
3.What payment methods are accepted for THS4031IDGNG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for THS4031IDGNG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for THS4031IDGNG4?
THS4031IDGNG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your THS4031IDGNG4 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for THS4031IDGNG4?
For technical support, including THS4031IDGNG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your THS4031IDGNG4 requirements.
6.How does Aetrix verify that THS4031IDGNG4 is sourced from the original manufacturer or authorized distributors?
All THS4031IDGNG4 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that THS4031IDGNG4 meets industry standards.
7.What is the process for return or replacement of THS4031IDGNG4?
All THS4031IDGNG4 units undergo pre-shipment inspection (PSI). If there is an issue with THS4031IDGNG4, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The THS4031IDGNG4 part is unused and in its original packaging.
Return procedure for THS4031IDGNG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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