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Texas Instruments THS4304DR
- Part No.:
- THS4304DR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
THS4304DR.pdf
- Description:
- IC VOLTAGE FEEDBACK 1 CIRC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,120
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Product details
Overview
THS4304DR from Texas Instruments is a wideband voltage-feedback operational amplifier designed for high-speed ADC driving and active filter applications in single-supply systems. It delivers 3 GHz small-signal bandwidth at G = +1, 830 V/µs slew rate, 2.4 nV/√Hz input voltage noise, and operates from a single 5-V supply with 18 mA quiescent current. It is used in RF/telecom signal chains and ultrasound front-ends where low distortion and fast settling are critical.
For engineers reviewing the THS4304DR datasheet, THS4304DR pinout, THS4304DR application, or THS4304DR equivalent, key selection criteria include its 3 GHz unity-gain bandwidth, differential ADC driver capability, 0.1-dB flatness to 300 MHz, and SOIC-8 package thermal performance (θJA = 97.5°C/W).
Technical Context
The THS4304DR employs a BiCom3 silicon germanium process to achieve wideband operation on a single 5-V rail-eliminating need for ±5-V supplies while maintaining low distortion and high slew rate. Its traditional voltage-feedback topology provides balanced inputs, low offset voltage (≤5 mV), and high common-mode rejection (≥73 dB) over temperature.
It is optimized for gain-of-2 configurations using 249-Ω feedback resistors, supports 100-Ω loads with 2.4-Vpp output swing, and requires careful layout to minimize parasitic capacitance at the inverting input and output to preserve phase margin and flat frequency response.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-Signal Bandwidth | 3 GHz at G = +1 - enables direct RF signal amplification up to cellular/WiFi bands without intermediate stages |
| Slew Rate | 830 V/µs - supports clean 2-Vpp transient response with ≤4.5 ns settling to 1% for high-resolution ADC sampling |
| Input Voltage Noise | 2.4 nV/√Hz at 1 MHz - preserves SNR in precision analog front-ends feeding 12–14-bit ADCs |
| 0.1-dB Flat Bandwidth | 300 MHz with CF = 0.5 pF - ensures amplitude fidelity across wide IF bandwidths in communications receivers |
| Quiescent Current | 18 mA at 5 V - balances power efficiency with performance in portable or thermally constrained systems |
| Output Voltage Swing | 3.7 Vpp into 100 Ω - drives ADC inputs directly without level-shifting, reducing component count |
| Harmonic Distortion | –84 dBc 2nd harmonic at 10 MHz - meets SFDR requirements for LTE/WCDMA baseband signal paths |
Pinout & Package
THS4304DR is housed in an 8-pin SOIC package (D package), with exposed pad not electrically connected. Thermal resistance is θJA = 97.5°C/W per JEDEC High-K test PCB, supporting reliable operation at ≤125°C junction temperature under typical PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN−) | Inverting Input | High-impedance node for feedback network connection; sensitive to parasitic capacitance - requires short trace routing |
| 2 (IN+) | Non-Inverting Input | High-impedance input for signal source; common-mode range extends to VS− −0.2 V and VS+ +0.2 V |
| 3 (VS−) | Negative Supply Rail | Ground reference for single-supply operation; must be bypassed with 0.1 µF ceramic capacitor placed <1 mm from pin |
| 4 (VOUT) | Amplifier Output | Capable of sourcing/sinking ≥100 mA into 10 Ω; output impedance is 0.016 Ω at 100 kHz for low-loss transmission line drive |
| 5 (NC) | No Internal Connection | Unused pin - must remain unconnected; no internal circuitry or thermal path |
| 6 (NC) | No Internal Connection | Unused pin - must remain unconnected; no internal circuitry or thermal path |
| 7 (VS+) | Positive Supply Rail | 5-V nominal supply; PSRR+ is 80 dB - rejects ripple from switching regulators when properly decoupled |
| 8 (VOUT) | Amplifier Output | Duplicate output pin for improved current handling and reduced bond wire inductance - tied internally to Pin 4 |
Key Features
| Feature | Design Value |
|---|---|
| Single 5-V operation | Eliminates dual-rail power supply design complexity and cost while delivering performance comparable to ±5-V op-amps |
| 3 GHz unity-gain bandwidth | Enables direct amplification of IF signals up to 2.4 GHz without gain staging, reducing group delay and phase error |
| Low 2.4 nV/√Hz input noise | Maintains >69 dB SNR when driving 125 MSPS ADCs like ADS5500, preserving effective resolution |
| 830 V/µs slew rate | Supports full-scale step response for 14-bit systems with <5 ns settling time, minimizing aperture uncertainty |
| 0.1-dB flatness to 300 MHz | Ensures amplitude consistency across multi-carrier LTE/WiMAX channels without digital correction |
Applications
| Ultrasound Imaging Front-End | RF/Telecom IF Amplifier |
|---|---|
Use Scenario: Amplifying low-amplitude echo signals from piezoelectric transducers before digitization in portable ultrasound systems. IC Role / Device Role / Timing Role: Low-noise, wideband gain block placed between transducer receive path and high-speed ADC. Use Value: 2.4 nV/√Hz input noise and 3 GHz bandwidth preserve weak signal integrity and enable higher imaging frame rates. | Use Scenario: Buffering and gain-setting stage in 400–2500 MHz IF signal chain of software-defined radio receivers. IC Role / Device Role / Timing Role: Differential ADC driver with matched output impedance for anti-alias filtering and ADC interface. Use Value: –84 dBc 2nd harmonic distortion at 10 MHz and 300 MHz 0.1-dB flatness ensure clean multi-tone signal reconstruction. |
| Gamma Camera Signal Conditioning | High-Speed Data Acquisition System |
Use Scenario: Amplifying scintillation detector pulses with nanosecond rise times in nuclear medicine imaging equipment. IC Role / Device Role / Timing Role: Fast-settling pulse amplifier driving 125 MSPS ADCs such as ADS5500. Use Value: 4.5 ns settling to 1% and 2.5 ns rise time maintain pulse fidelity for accurate energy and timing discrimination. | Use Scenario: Front-end gain stage in automated test equipment capturing transient waveforms up to 200 MHz. IC Role / Device Role / Timing Role: Wideband buffer isolating signal source from ADC input capacitance while providing programmable gain. Use Value: 240 MHz large-signal bandwidth at 2-Vpp output and 830 V/µs slew rate prevent slew-induced distortion on fast edges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar wideband op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMH6703MF/NOPB | Higher 1.8-GHz GBW but lower 350-V/µs slew rate; 3.3-nV/√Hz noise; SOIC-8 package | Lower bandwidth and slew limit use in >100-MHz transient capture; better DC precision (0.5-mV VOS) | Select when prioritizing DC accuracy over RF bandwidth and settling speed |
| ADA4817-1ARZ-R7 | Faster 1.05-GHz GBW and 225-V/µs slew; 4.3-nV/√Hz noise; SOIC-8 package; requires dual supply | Cannot operate from single 5-V rail; higher noise degrades SNR in low-level signal chains | Select only if dual ±2.5-V supply is available and ultra-low input bias current (1-pA) is required |
Compared with LMH6703MF/NOPB and ADA4817-1ARZ-R7, THS4304DR uniquely combines 3-GHz bandwidth, 830-V/µs slew, and true single-5V operation - making it optimal for space-constrained, high-SFDR ADC driver designs where supply simplification is critical.
Availability
THS4304DR is available at Aetrix Electronics and suitable for RF/telecom infrastructure, medical ultrasound imaging, and high-speed data acquisition requiring stable component supply and long-term industrial availability.
Supply support for THS4304DR 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-speed amplifier design.
The THS4304DR belongs to TI's high-frequency voltage-feedback op-amp product line, engineered specifically for single-supply ADC driver and wideband signal conditioning applications in communications and medical imaging.
FAQ
What is the maximum operating supply voltage for the THS4304DR?
The THS4304DR has an absolute maximum supply voltage rating of +6.0 V, but its recommended operating range is 2.7 V to 5.0 V for single-supply use. At 5 V, it achieves full specified AC performance including 3 GHz bandwidth and 830 V/µs slew rate. Operation above 5.0 V is not characterized and may compromise reliability or distortion performance. The THS4304DR is not rated for split-supply operation beyond ±2.5 V.
Does the THS4304DR support differential output driving for ADC interfaces?
Yes, the THS4304DR is widely used as a single-ended-to-differential ADC driver, particularly with devices like the ADS5500. Its high slew rate (830 V/µs), low distortion (–84 dBc 2nd harmonic), and 300 MHz 0.1-dB flat bandwidth enable clean, balanced drive of ADC inputs. While it is not a fully differential amplifier, paired THS4304DR units or external passive networks can implement high-fidelity differential signaling with matched gain and phase.
What is the thermal resistance (θJA) of the THS4304DR in SOIC-8 package?
The THS4304DR in SOIC-8 (D) package has a junction-to-ambient thermal resistance (θJA) of 97.5°C/W, measured per JEDEC standard High-K test PCB. This value assumes proper PCB layout with adequate copper pour and thermal vias. For continuous operation, junction temperature must remain ≤125°C - limiting max power dissipation to ~410 mW at TA = 85°C. Derating is required above 85°C ambient.
Can the THS4304DR drive a 50-Ω load directly?
The THS4304DR is not optimized for direct 50-Ω termination; its specified load condition is 100 Ω. Driving 50 Ω increases output current demand and may degrade distortion and bandwidth. For 50-Ω systems, use a series 50-Ω resistor at the output (forming a 100-Ω match) or add a 1:1 RF transformer. The THS4304DR's 100-Ω output swing (3.7 Vpp) and 140-mA sourcing capability support this configuration without clipping or excessive thermal stress.
Is the THS4304DR pin-compatible with other members of the THS43xx family?
No, the THS4304DR is not pin-compatible with other THS43xx variants such as THS4302 or THS4303. Although all share the SOIC-8 (D) package footprint, their pinouts differ: THS4304DR uses Pins 1–4 and 7–8 for IN−, IN+, VS−, VOUT, VS+, and VOUT (dual output), whereas THS4302 places VOUT on Pin 1 and uses different NC assignments. Always verify pin mapping against the specific device datasheet before board reuse.
THS4304DR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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
THS4304DR FAQ
1.How can I place an order for THS4304DR through Aetrix?
Please submit a Request for Quotation (RFQ) for THS4304DR 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 THS4304DR reliable?
The price and inventory of THS4304DR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for THS4304DR is usually 5 days.
3.What payment methods are accepted for THS4304DR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for THS4304DR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for THS4304DR?
THS4304DR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your THS4304DR 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 THS4304DR?
For technical support, including THS4304DR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your THS4304DR requirements.
6.How does Aetrix verify that THS4304DR is sourced from the original manufacturer or authorized distributors?
All THS4304DR 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 THS4304DR meets industry standards.
7.What is the process for return or replacement of THS4304DR?
All THS4304DR units undergo pre-shipment inspection (PSI). If there is an issue with THS4304DR, 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 THS4304DR part is unused and in its original packaging.
Return procedure for THS4304DR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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