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Texas Instruments THS3091DDAG3
- Part No.:
- THS3091DDAG3
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-PowerSOIC (0.154", 3.90mm Width)
- Datasheet:
-
THS3091DDAG3.pdf
- Description:
- IC OPAMP CFA 1 CIRC 8SOPWRPAD
- Quantity:
- Payment:
- Shipping:
Inventory:134
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Product details
Overview
THS3091DDAG3 from Texas Instruments is a high-voltage, current-feedback operational amplifier optimized for large-signal, high-fidelity output drive. It delivers ±310 mA output current, 6000 V/μs slew rate (G = 5, VO = 20 VPP), and 305 MHz small-signal bandwidth (G = 2, RL = 100 Ω) while operating from ±5 V to ±16 V supplies. It is used in pin drivers, power-FET drivers, and high-voltage arbitrary waveform generators.
For engineers reviewing the THS3091DDAG3 datasheet, THS3091DDAG3 pinout, THS3091DDAG3 application, or THS3091DDAG3 equivalent, key selection criteria include its current-feedback architecture, low 1.1-nV/√Hz voltage noise, –84-dBc HD2 at 10 MHz (RL = 1 kΩ), thermal performance in SO PowerPAD™ package, and absence of power-down functionality compared to THS3095.
Technical Context
The THS3091DDAG3 implements a current-feedback op-amp topology with transimpedance gain stage, enabling wide bandwidth independent of closed-loop gain. Its input stage uses matched bipolar transistors for low input bias current drift (±20 nA/°C noninverting, ±80 nA/°C inverting) and high common-mode rejection (78 dB typ at ±10 V).
It features a robust output stage capable of sourcing/sinking ±310 mA into 40 Ω loads while maintaining <18.5 ns settling time to 0.01% (2-VPP step). The device lacks a power-down pin-unlike THS3095-and operates continuously with 9.5 mA quiescent current at ±15 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | ±5 V to ±16 V - supports high-voltage signal generation without rail-to-rail limitation |
| Slew Rate | 6000 V/μs (G = 5, VO = 20 VPP) - enables fast large-signal transitions in pulse and waveform applications |
| Small-Signal Bandwidth | 305 MHz (G = 2, RL = 100 Ω) - maintains fidelity up to UHF frequencies in current-feedback configuration |
| Output Current Drive | ±310 mA - drives low-impedance loads including FET gates and piezo elements directly |
| Harmonic Distortion | –84 dBc HD2 / –99 dBc HD3 at 10 MHz, RL = 1 kΩ - preserves spectral purity in precision waveform synthesis |
| Voltage Noise Density | 1.1 nV/√Hz - minimizes contribution to system noise floor in high-gain, wideband stages |
| Input Current Noise | 15 pA/√Hz (noninverting), 14 pA/√Hz (inverting) - critical for high-source-impedance sensor interfaces |
Pinout & Package
THS3091DDAG3 is housed in an 8-pin SOIC PowerPAD™ (DDA) package with exposed thermal pad for enhanced heat dissipation. The package supports surface-mount assembly and requires PCB thermal vias under the pad for optimal junction-to-board thermal resistance (RθJB = 32.6 °C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5, 8 | No Connection | Internally unconnected; must be left floating or grounded per layout best practices |
| 2 | Inverting Input (VIN−) | Current-summing node for feedback path; low impedance (30 Ω) enables stable CFB compensation |
| 3 | Noninverting Input (VIN+) | High-impedance input (0.7 MΩ) with 2.4 pF capacitance; sets reference point for differential operation |
| 4 | Negative Supply (VS−) | Return path for internal bias and output stage; requires low-ESR decoupling near pin |
| 6 | Output (VOUT) | Capable of ±310 mA drive into 40 Ω; output impedance 0.06 Ω at 1 MHz ensures minimal gain error |
| 7 | Positive Supply (VS+) | Primary power rail; supports up to ±16 V; total supply range 32 V enables high-voltage swing |
Key Features
| Feature | Design Value |
|---|---|
| Current-feedback architecture | Enables constant bandwidth across gains (e.g., 305 MHz at G = 2, 205 MHz at G = 5), unlike voltage-feedback op-amps |
| High output current capability | ±310 mA drive allows direct interfacing with power-FET gates and capacitive piezo loads without external buffers |
| Low distortion at high frequency | –84 dBc HD2 at 10 MHz ensures clean spectral output in arbitrary waveform generator front-ends |
| Wide supply range | ±5 V to ±16 V operation supports both low-power test equipment and industrial high-voltage systems |
| Thermally enhanced PowerPAD™ | SOIC-DDA package with exposed die paddle reduces RθJA to 58.4 °C/W, enabling sustained high-output operation |
Applications
| High-Voltage Arbitrary Waveform Generator | Pin Driver for Semiconductor Test |
|---|---|
Use Scenario: Generating programmable high-amplitude, high-slew-rate waveforms (e.g., pulses, ramps, sine bursts) for ATE stimulus. IC Role / Device Role / Timing Role: Final-stage output driver amplifying DAC-complementary signals to ±12.5 V into 100 Ω loads. Use Value: 6000 V/μs slew rate and 305 MHz bandwidth preserve edge integrity and harmonic content up to 10 MHz. | Use Scenario: Driving DUT pins with precise high-speed digital or analog stimulus during wafer-level testing. IC Role / Device Role / Timing Role: High-current buffer delivering fast logic transitions (2 ns rise/fall) to low-impedance IC inputs. Use Value: ±310 mA sourcing/sinking capability ensures full logic swing into capacitive pin loads without droop or overshoot. |
| Power-FET Gate Driver | Source Measurement Unit (SMU) Output Stage |
Use Scenario: Switching high-side or low-side power MOSFETs in precision power supplies or motor control. IC Role / Device Role / Timing Role: Voltage-controlled current source driving gate capacitance with controlled dV/dt. Use Value: 6000 V/μs slew rate enables sub-100 ns turn-on/off times; low 1.1-nV/√Hz noise avoids gate disturbance. | Use Scenario: Providing calibrated, four-quadrant voltage/current output in semiconductor parametric testers. IC Role / Device Role / Timing Role: Precision output amplifier delivering ±12.5 V / ±310 mA with low distortion and fast settling. Use Value: 12.5 ns settling to 0.1% and –99 dBc HD3 at 10 MHz ensure accurate DC + AC characterization of DUTs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage, high-speed amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| THS3095DDAG3 | Includes PD pin and REF input; quiescent current drops from 9.5 mA to 500 μA in power-down mode | Required where intermittent operation or standby power reduction is mandated (e.g., portable test gear) | Select THS3095DDAG3 only if power-down functionality is needed; THS3091DDAG3 has identical AC/DC specs otherwise |
| THS3491IRGTT | Higher 900-MHz bandwidth (G = 5), 8000-V/μs slew rate, ±420-mA output, but narrower ±6-V to ±16-V supply range | Better suited for >100-MHz RF signal paths or ultrafast pulse generation where THS3091DDAG3 bandwidth is limiting | Choose THS3491IRGTT when bandwidth >305 MHz is required; note higher 17.3-mA quiescent current and different package (QFN) |
Compared with THS3095DDAG3, THS3091DDAG3 offers identical dynamic performance without power management overhead; versus THS3491IRGTT, it trades bandwidth and slew for lower noise (1.1 vs 1.7 nV/√Hz) and broader supply flexibility (±5 V min).
Availability
THS3091DDAG3 is available at Aetrix Electronics and suitable for high-voltage arbitrary waveform generators, semiconductor pin drivers, and power-FET gate drivers requiring stable component supply, long-lifecycle support, and traceable sourcing.
Supply support for THS3091DDAG3 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 specializing in analog and embedded processing technologies, with leadership in high-performance op-amps, data converters, and power management ICs.
The THS309x family was designed specifically for high-voltage, high-fidelity output drive in automated test equipment, precision instrumentation, and industrial actuation systems where linearity, speed, and output current are critical.
FAQ
What is the maximum supply voltage for THS3091DDAG3?
The THS3091DDAG3 supports dual-supply operation from ±5 V to ±16 V, with absolute maximum supply rating of ±16 V (32 V total). Exceeding ±16 V risks permanent damage per Absolute Maximum Ratings. Operation at ±15 V is typical for achieving full 305 MHz bandwidth and ±310 mA output drive.
Does THS3091DDAG3 have a power-down feature?
No, THS3091DDAG3 does not include a power-down pin or circuitry. That functionality is exclusive to THS3095DDAG3, which adds PD and REF pins. THS3091DDAG3 operates continuously with 9.5 mA quiescent current at ±15 V and cannot be placed in low-power standby mode.
What package type is used for THS3091DDAG3?
THS3091DDAG3 uses the 8-pin SOIC PowerPAD™ (DDA) package, featuring an exposed thermal pad on the underside for enhanced heat dissipation. This differs from the HVSSOP (DGN) variant offered for THS3091, and is not compatible with THS3095's DDA-only offering.
What is the small-signal bandwidth of THS3091DDAG3 at G = 2?
At G = 2, RL = 100 Ω, and VS = ±15 V, the THS3091DDAG3 delivers a small-signal bandwidth of 305 MHz (–3 dB). This value is measured with RF = 1.21 kΩ and VO = 200 mVPP, and reflects the current-feedback architecture's gain-bandwidth independence.
How does THS3091DDAG3 handle capacitive loads?
THS3091DDAG3 requires external isolation resistor (RISO) for stability with capacitive loads. For example, with CL = 47 pF, a 22.1-Ω RISO is recommended; with CL = 100 pF, use 15.8 Ω. These values are derived from TI's Figure 7-8 and prevent peaking or oscillation in high-current drive scenarios.
THS3091DDAG3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-PowerSOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- Current Feedback
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 7300V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 235 MHz
- Current - Input Bias:
- 4 µA
- Voltage - Input Offset:
- 900 µV
- Current - Supply:
- 9.5mA
- Current - Output / Channel:
- 280 mA
- Voltage - Supply Span (Min):
- 10 V
- Voltage - Supply Span (Max):
- 30 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO PowerPad
THS3091DDAG3 FAQ
1.How can I place an order for THS3091DDAG3 through Aetrix?
Please submit a Request for Quotation (RFQ) for THS3091DDAG3 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 THS3091DDAG3 reliable?
The price and inventory of THS3091DDAG3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for THS3091DDAG3 is usually 5 days.
3.What payment methods are accepted for THS3091DDAG3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for THS3091DDAG3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for THS3091DDAG3?
THS3091DDAG3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your THS3091DDAG3 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 THS3091DDAG3?
For technical support, including THS3091DDAG3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your THS3091DDAG3 requirements.
6.How does Aetrix verify that THS3091DDAG3 is sourced from the original manufacturer or authorized distributors?
All THS3091DDAG3 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 THS3091DDAG3 meets industry standards.
7.What is the process for return or replacement of THS3091DDAG3?
All THS3091DDAG3 units undergo pre-shipment inspection (PSI). If there is an issue with THS3091DDAG3, 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 THS3091DDAG3 part is unused and in its original packaging.
Return procedure for THS3091DDAG3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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