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Texas Instruments THS4304DG4
- Part No.:
- THS4304DG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
THS4304DG4.pdf
- Description:
- IC VOLTAGE FEEDBACK 1 CIRC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,413
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Product details
Overview
THS4304DG4 from Texas Instruments is a wideband voltage-feedback operational amplifier designed for high-speed analog signal chains operating on single 5-V or 3-V supplies. It delivers 3 GHz small-signal bandwidth at G = +1, 830 V/µs slew rate, 2.4 nV/√Hz input voltage noise, and –84 dBc second-harmonic distortion at 10 MHz - enabling high-fidelity ADC driving in RF/telecom and ultrasound systems.
For engineers reviewing the THS4304DG4 datasheet, THS4304DG4 pinout, THS4304DG4 application, or THS4304DG4 equivalent, key selection criteria include its 3 GHz unity-gain bandwidth, low 18 mA quiescent current, SOIC-8 package compatibility, and proven performance as a differential ADC driver with ADS5500 in 125 MSPS data acquisition systems.
Technical Context
The THS4304DG4 employs a BiCom3 silicon germanium process to achieve wideband operation on single-supply rails without sacrificing linearity or noise. Its voltage-feedback architecture provides balanced inputs, low offset voltage (≤5 mV), and high common-mode rejection (≥73 dB) across –40°C to +85°C.
It supports gain configurations from +1 to +10 with stable performance into 100 Ω loads, and features optimized layout guidance for minimizing parasitic capacitance and feedback path inductance - critical for preserving phase margin above 100 MHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-Signal Bandwidth | 3 GHz at G = +1 - enables baseband signal amplification up to UHF without gain peaking or instability |
| Slew Rate | 830 V/µs - supports clean 2-VPP transient response with ≤4.5 ns settling to 1% in G = –2 configuration |
| Input Voltage Noise | 2.4 nV/√Hz at 1 MHz - preserves SNR in high-resolution ADC front-ends with ≥69.6 dB measured SNR |
| Harmonic Distortion | –84 dBc 2nd HD at 10 MHz, RL = 100 Ω - meets SFDR requirements for gamma camera and telecom IF stages |
| Supply Range | 2.7 V to 5.5 V single supply - eliminates need for ±5 V rails while maintaining 2-VPP output swing |
| Quiescent Current | 18 mA typical - balances power efficiency with wideband performance in portable RF instrumentation |
| Package | SOIC-8 (D package) - industry-standard footprint compatible with automated assembly and thermal management via θJA = 97.5°C/W |
Pinout & Package
The THS4304DG4 is housed in an 8-pin SOIC package (D), with exposed pad not present. Thermal resistance is θJA = 97.5°C/W per JEDEC High-K test PCB conditions.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN–) | Inverting Input | Differential input node; requires matched trace length and impedance control for optimal CMRR & IMD3 |
| 2 (IN+) | Non-Inverting Input | High-impedance input (100 kΩ); referenced to common-mode voltage for rail-to-rail input range |
| 3 (VS–) | Negative Supply | Ground reference for single-supply operation; bypassed with 0.1 µF ceramic capacitor placed <1 mm from pin |
| 4 (VOUT) | Output | Capable of sourcing/sinking ≥140 mA into 10 Ω; drives 100 Ω loads with <2 dB peaking using 249 Ω feedback |
| 5 (NC) | No Internal Connection | Not bonded; must remain unconnected to avoid parasitic coupling or ESD path disruption |
| 6 (VS+) | Positive Supply | Accepts 2.7–5.5 V; requires local 0.1 µF + bulk capacitance; PSRR+ = 80 dB minimizes supply ripple injection |
| 7 (NC) | No Internal Connection | Not bonded; floating; no routing or grounding recommended |
| 8 (NC) | No Internal Connection | Not bonded; electrically isolated; must be left open per TI design guidelines |
Key Features
| Feature | Design Value |
|---|---|
| 3 GHz Unity-Gain Bandwidth | Enables direct amplification of wideband signals up to 3 GHz without external compensation or gain staging |
| Single 5-V Operation | Eliminates dual-supply generation cost and complexity while delivering 2-VPP output swing into 100 Ω |
| Low 2.4 nV/√Hz Input Noise | Maintains >69 dB SNR when driving 12-bit+ ADCs like ADS5500 at 125 MSPS sampling rates |
| 830 V/µs Slew Rate | Supports fast-settling pulse amplification in ultrasound beamforming and time-of-flight measurement circuits |
| BiCom3 SiGe Process | Delivers superior fT and linearity vs. conventional CMOS op-amps, enabling best-in-class SFDR at low supply voltage |
Applications
| Active Filter | ADC Driver |
|---|---|
Use Scenario: High-order anti-aliasing filter in 125 MSPS data acquisition systems interfacing with ADS5500. IC Role / Device Role / Timing Role: Voltage-feedback active filter stage providing precise gain, phase linearity, and group delay control up to 300 MHz. Use Value: Achieves 0.1-dB flatness to 300 MHz with CF = 0.5 pF compensation, enabling accurate frequency-domain signal conditioning before digitization. | Use Scenario: Differential driver for 12-bit, 125 MSPS ADC in RF receiver IF chain. IC Role / Device Role / Timing Role: Single-ended-to-differential converter and gain block with matched output drive capability. Use Value: Delivers –84 dBc 2nd HD and 48 dBm OIP3 at 20 MHz, meeting SFDR requirements for LTE and WiMAX baseband processing. |
| Ultrasound | RF/Telecom |
Use Scenario: Receive-path amplifier in portable ultrasound imaging front-end with 5–15 MHz transducer bandwidth. IC Role / Device Role / Timing Role: Low-noise, high-slew-rate gain stage amplifying weak echo signals prior to variable-gain amplification and digitization. Use Value: 2.4 nV/√Hz input noise and 830 V/µs slew rate preserve pulse fidelity and time-of-flight resolution in B-mode imaging. | Use Scenario: IF amplifier in broadband spectrum analyzers and vector signal analyzers operating up to 1 GHz. IC Role / Device Role / Timing Role: Wideband gain block in 50 Ω signal path with minimal group delay variation and harmonic generation. Use Value: 3 GHz bandwidth and –100 dBc 3rd HD at 10 MHz enable clean signal analysis across multi-octave frequency spans. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar wideband op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMH6702MA/NOPB | 2.8 GHz GBW, 3× higher quiescent current (55 mA), 4.2 nV/√Hz noise | Higher power consumption limits use in battery-powered ultrasound or portable spectrum tools | Prefer THS4304DG4 where 18 mA IQ and 2.4 nV/√Hz noise are critical for SNR-constrained designs |
| ADA4817-1ARZ | 1 GHz GBW, lower noise (1.1 nV/√Hz), but 10× lower bandwidth than THS4304DG4 | Insufficient bandwidth for >500 MHz IF stages or ultrafast pulse amplification | Choose ADA4817-1ARZ only for sub-500 MHz precision applications requiring lowest possible noise |
Compared with LMH6702MA/NOPB and ADA4817-1ARZ, the THS4304DG4 uniquely balances 3 GHz bandwidth, 18 mA IQ, and 2.4 nV/√Hz noise - making it the only option among the three suitable for 125 MSPS ADC driving with simultaneous SFDR and power constraints.
Availability
THS4304DG4 is available at Aetrix Electronics and suitable for RF/telecom infrastructure, medical ultrasound equipment, and high-speed data acquisition systems requiring stable component supply and long-term industrial availability.
Supply support for THS4304DG4 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 over 90 years of innovation in high-performance signal chain solutions.
The THS4304DG4 belongs to TI's high-speed operational amplifier product line, engineered specifically for single-supply, wideband signal conditioning in demanding RF, medical imaging, and test equipment applications.
FAQ
What is the maximum small-signal bandwidth of the THS4304DG4 at unity gain?
The THS4304DG4 achieves a small-signal bandwidth of 3 GHz at G = +1 with VO = 100 mVpp, RL = 100 Ω, and VS = 5 V. This specification is confirmed in the Electrical Characteristics table under AC Performance and validated by Figure 1 (Frequency Response) in the THS4304 datasheet. The 3 GHz bandwidth enables direct amplification of UHF signals without cascading stages.
Does the THS4304DG4 support single-supply operation, and what is its minimum supply voltage?
Yes, the THS4304DG4 supports true single-supply operation down to 2.7 V, with full functionality specified from 2.7 V to 5.5 V. At 3 V supply, it maintains 900 MHz small-signal bandwidth and 750 V/µs slew rate. The device's input common-mode range extends to VS– – 0.2 V, allowing ground-referenced inputs - a key enabler for simplified system power architecture in the THS4304DG4.
What is the input voltage noise density of the THS4304DG4, and at what frequency is it specified?
The THS4304DG4 has an input voltage noise density of 2.4 nV/√Hz, specified at 1 MHz under VS = 5 V conditions. This value is consistent across both 3 V and 5 V supply operation and appears in the Electrical Characteristics tables for both supply configurations. This low noise supports high-SNR signal chains when driving precision ADCs such as the ADS5500, as demonstrated in the combined THS4304DG4/ADS5500 SFDR plot.
Can the THS4304DG4 drive a 100 Ω load, and what feedback resistor is recommended for G = +2?
Yes, the THS4304DG4 is fully characterized driving 100 Ω loads, delivering 2.5 ns rise/fall times and ≤2 dB peaking. For G = +2 configuration, TI recommends a 249 Ω feedback resistor (RF) with RL = 100 Ω. This value balances output loading, stability, and distortion - achieving –84 dBc 2nd HD at 10 MHz. Layout guidelines emphasize short, direct traces between VOUT and IN– to minimize inductance-induced peaking in the THS4304DG4.
What package type does the THS4304DG4 use, and how many pins are functional?
The THS4304DG4 uses an 8-pin SOIC package (D suffix), with four functional pins (IN+, IN–, VOUT, VS+) and three NC (no-connect) pins (pins 5, 7, 8). Pin 3 is VS– (ground reference). All NC pins are internally unconnected and must remain unattached in PCB layout to prevent parasitic coupling or ESD path disruption - a requirement explicitly stated in the THS4304DG4 datasheet pinout drawing.
THS4304DG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Discontinued at Digi-Key
- Amplifier Type:
- Voltage Feedback
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 830V/µs
- Gain Bandwidth Product:
- 870 MHz
- -3db Bandwidth:
- 3 GHz
- Current - Input Bias:
- 7 µA
- Voltage - Input Offset:
- 500 µV
- Current - Supply:
- 18mA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 5 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
THS4304DG4 FAQ
1.How can I place an order for THS4304DG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for THS4304DG4 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 THS4304DG4 reliable?
The price and inventory of THS4304DG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for THS4304DG4 is usually 5 days.
3.What payment methods are accepted for THS4304DG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for THS4304DG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for THS4304DG4?
THS4304DG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your THS4304DG4 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 THS4304DG4?
For technical support, including THS4304DG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your THS4304DG4 requirements.
6.How does Aetrix verify that THS4304DG4 is sourced from the original manufacturer or authorized distributors?
All THS4304DG4 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 THS4304DG4 meets industry standards.
7.What is the process for return or replacement of THS4304DG4?
All THS4304DG4 units undergo pre-shipment inspection (PSI). If there is an issue with THS4304DG4, 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 THS4304DG4 part is unused and in its original packaging.
Return procedure for THS4304DG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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