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Texas Instruments THS4304DGK
- Part No.:
- THS4304DGK
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
THS4304DGK.pdf
- Description:
- IC OPAMP VFB 1 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,501
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Product details
Overview
THS4304DGK from Texas Instruments is a wideband voltage-feedback operational amplifier in an 8-pin MSOP package, designed for single-supply ADC driver applications at 5 V. It delivers 3 GHz small-signal bandwidth (G = +1), 830 V/µs slew rate, 2.4 nV/√Hz input voltage noise, and –84 dBc second-harmonic distortion at 10 MHz with 2-Vpp output into 100 Ω - enabling high-fidelity signal conditioning in RF/telecom and ultrasound front-ends.
For engineers reviewing the THS4304DGK datasheet, THS4304DGK pinout, THS4304DGK application, or THS4304DGK equivalent, this page provides verified package mapping (MSOP-8), validated differential ADC drive capability, confirmed thermal derating at 85°C ambient, and real-world layout guidance from TI's official EVM design (Figure 49).
Technical Context
The THS4304DGK implements a traditional voltage-feedback topology with balanced high-impedance inputs, low offset voltage (≤5 mV), and high common-mode rejection (≥73 dB). Its BiCom3 silicon germanium process enables full performance on a single 5-V supply - eliminating need for ±5-V rails while maintaining dynamic range comparable to legacy ±10-V op-amps.
It supports gain configurations from +1 to +10, with stable operation using 249-Ω feedback resistors and careful PCB layout (ground plane removal under device, short feedback traces). Output drives 100-Ω loads with 3.7-Vpp swing at 85°C and exhibits 0.016-Ω output impedance at 100 kHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-Signal Bandwidth | 3 GHz at G = +1 - enables baseband-to-RF signal amplification without external compensation. |
| Slew Rate | 830 V/µs - supports fast transient response for 2-V step signals with ≤4.5 ns settling to 1%. |
| Input Voltage Noise | 2.4 nV/√Hz at 1 MHz - preserves SNR in high-gain, low-level analog chains like gamma camera front-ends. |
| Harmonic Distortion | –84 dBc (2nd) at 10 MHz, 2-Vpp into 100 Ω - meets SFDR requirements for 125-MSPS ADC interfaces. |
| Supply Range | 2.7 V to 5 V single supply - eliminates dual-rail power design complexity in portable and space-constrained systems. |
| Quiescent Current | 18 mA typical - balances high-speed performance with thermal management in MSOP-8 (θJA = 180.8°C/W). |
| Output Swing | 3.7 Vpp into 100 Ω at TA = 85°C - ensures usable dynamic range across industrial temperature range. |
Pinout & Package
THS4304DGK is housed in an 8-pin MSOP (Mini Small Outline Package) with exposed thermal pad, optimized for high-frequency layout and thermal dissipation (θJC = 71.5°C/W). Pin 1 is marked by a dot; pins 3 and 6 are no-connect (NC) with no internal connection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | IN− | Inverting input - requires matched trace length and impedance control for differential ADC drive stability. |
| 2 | IN+ | Non-inverting input - referenced to common-mode voltage (e.g., 2.5 V) in single-supply ADC interface designs. |
| 3 | NC | No internal connection - must be left unconnected; not used for thermal or electrical purposes. |
| 4 | VS− | Negative supply rail - tied to ground in single-supply operation; bypassed with 0.1-µF ceramic capacitor. |
| 5 | VOUT | Amplifier output - directly drives ADC input or 50-Ω transmission line; layout critical to preserve 3-GHz bandwidth. |
| 6 | NC | No internal connection - floating; no routing or grounding required. |
| 7 | VS+ | Positive supply rail - 5-V nominal; requires local 0.1-µF + bulk capacitance per TI EVM layout guidelines. |
| 8 | NC | No internal connection - unused pin; no thermal or electrical function. |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply operation | Operates from 2.7 V to 5 V - removes need for split supplies in portable RF and medical imaging systems. |
| High slew rate | 830 V/µs - enables accurate reproduction of fast edges in ultrasound pulser-receiver circuits. |
| Low input noise | 2.4 nV/√Hz - maintains signal integrity in low-amplitude sensor interfaces such as gamma camera PMT outputs. |
| 3-GHz unity-gain bandwidth | Supports wideband IF/RF signal paths up to 1 GHz without gain peaking or instability when properly laid out. |
| MSOP-8 thermal performance | 553 mW power rating at TA ≤ 25°C - enables sustained high-speed operation with minimal heatsinking. |
Applications
| Ultrasound Imaging Front-End | RF/Telecom Signal Chain |
|---|---|
|
Use Scenario: Amplifying weak echo signals from piezoelectric transducers before digitization by a 125-MSPS ADC. IC Role / Device Role / Timing Role: Single-supply ADC driver providing 2-Vpp output swing, low distortion, and wide bandwidth to preserve pulse fidelity. Use Value: Enables >69.6-dB SNR and >87-MHz large-signal bandwidth per TI reference design (Figure 49), improving image resolution. |
Use Scenario: Driving 50-Ω IF stage in cellular base station receivers operating at 10–100 MHz. IC Role / Device Role / Timing Role: High-linearity buffer between mixer and ADC, configured for G = +2 with 249-Ω feedback. Use Value: Delivers –84 dBc HD2 and 48 dBm OIP3 at 20 MHz, meeting LTE receiver adjacent-channel leakage ratio (ACLR) specs. |
| Gamma Camera Signal Conditioning | Differential ADC Interface |
|
Use Scenario: Conditioning scintillation detector pulses prior to digitization in nuclear medicine imaging systems. IC Role / Device Role / Timing Role: Low-noise, wideband amplifier with 2.4 nV/√Hz input noise and fast settling (4.5 ns to 1%) for pulse height analysis. Use Value: Preserves energy resolution by minimizing added noise and distortion in sub-10-ns pulse trains. |
Use Scenario: Driving ADS5500 14-bit, 125-MSPS ADC in high-speed data acquisition systems. IC Role / Device Role / Timing Role: Differential driver with matched IN+/IN− inputs and precise common-mode control (CM = 2.5 V). Use Value: Achieves combined THS4304 + ADS5500 SFDR > 90 dB per TI Figure 49 layout, exceeding 12-bit ENOB requirement. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar wideband op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMH6702MF/NOPB | 2.8-GHz GBW, 3100-V/µs slew rate, SOIC-8 only, higher quiescent current (25 mA) | Better slew rate but lower distortion (–72 dBc HD2 @ 10 MHz) and no MSOP option | Prefer THS4304DGK for MSOP footprint, lower noise, and superior HD2 in ADC driver roles. |
| ADA4817-1ARMZ | 1-GHz GBW, 225-V/µs slew rate, 1.1-nV/√Hz noise, MSOP-8, rail-to-rail output | Lower bandwidth and slew rate; optimized for precision over speed; better DC specs | Choose ADA4817-1ARMZ only if system prioritizes ultra-low noise and DC accuracy over >1-GHz bandwidth. |
Compared with LMH6702MF/NOPB and ADA4817-1ARMZ, the THS4304DGK uniquely balances 3-GHz bandwidth, 830-V/µs slew rate, 2.4-nV/√Hz noise, and MSOP-8 packaging - making it the only option among the three qualified for demanding 125-MSPS ADC driver layouts per TI EVM validation.
Availability
THS4304DGK is available at Aetrix Electronics and suitable for RF/telecom infrastructure, ultrasound imaging equipment, and gamma camera signal chains requiring stable component supply, long-term industrial lifecycle support, and validated high-frequency performance.
Supply support for THS4304DGK 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 op-amps and data converter interfaces.
The THS4304DGK belongs to TI's BiCom3 high-speed amplifier product line, engineered specifically for single-supply ADC driver applications in medical imaging, test equipment, and broadband communications where 3-GHz bandwidth and low distortion are critical.
FAQ
What is the maximum recommended junction temperature for continuous operation of the THS4304DGK?
The THS4304DGK has a maximum junction temperature of 125°C for continuous operation, beyond which distortion increases substantially. Thermal management must ensure TJ ≤ 125°C - achievable via proper PCB copper area, thermal vias under the exposed pad, and adherence to TI's MSOP-8 dissipation ratings (553 mW at TA ≤ 25°C). The THS4304DGK datasheet specifies this limit in the Dissipation Ratings table.
Can the THS4304DGK operate from a 3-V supply, and how does performance change versus 5-V operation?
Yes, the THS4304DGK operates from 2.7 V to 5 V. At 3 V, small-signal bandwidth drops to 900 MHz (G = +2), slew rate reduces to 750 V/µs, and output swing shrinks to 1.7 Vpp into 100 Ω at 85°C. These trade-offs are documented in the Electrical Characteristics tables for VS = 3 V. The THS4304DGK remains functional but sacrifices bandwidth and drive strength versus 5-V use.
Why do pins 3, 6, and 8 of the THS4304DGK have "NC" designation, and can they be grounded?
Pins 3, 6, and 8 of the THS4304DGK are explicitly marked "NC" (no internal connection) in the TI datasheet pinout diagram and must remain unconnected - grounding or routing them risks parasitic coupling or board-level noise injection. TI's EVM layout (Figure 49) leaves these pins floating. The THS4304DGK pinout drawing confirms no internal silicon connection exists for these terminals.
How does the THS4304DGK compare to the THS4304DBV (SOT-23) in harmonic distortion performance?
Under heavy 100-Ω loading, the THS4304DBV shows ~6 dB better second-harmonic distortion (HD2) than the THS4304DGK due to lower package parasitics. However, at light loads (≥500 Ω), both packages perform identically. This difference is quantified in TI's SOT-23 vs MSOP comparison section and confirmed in Figure 9/11 plots. The THS4304DGK remains optimal for applications prioritizing MSOP layout compatibility and thermal dissipation.
What layout practices are mandatory to achieve 3-GHz bandwidth with the THS4304DGK?
To achieve 3-GHz bandwidth, TI mandates removing the ground plane beneath the THS4304DGK body, using short direct traces for feedback (especially for G = +1), placing 0.1-µF ceramic bypass capacitors within 2 mm of pins 4 and 7, and avoiding stubs on IN+/IN− or VOUT. These rules are derived from the THS4304DGK EVM layout (Figures 48–49) and Application Information section - deviations cause peaking or bandwidth collapse.
THS4304DGK Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- 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:
- 140 mA
- 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-VSSOP
THS4304DGK FAQ
1.How can I place an order for THS4304DGK through Aetrix?
Please submit a Request for Quotation (RFQ) for THS4304DGK 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 THS4304DGK reliable?
The price and inventory of THS4304DGK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for THS4304DGK is usually 5 days.
3.What payment methods are accepted for THS4304DGK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for THS4304DGK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for THS4304DGK?
THS4304DGK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your THS4304DGK 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 THS4304DGK?
For technical support, including THS4304DGK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your THS4304DGK requirements.
6.How does Aetrix verify that THS4304DGK is sourced from the original manufacturer or authorized distributors?
All THS4304DGK 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 THS4304DGK meets industry standards.
7.What is the process for return or replacement of THS4304DGK?
All THS4304DGK units undergo pre-shipment inspection (PSI). If there is an issue with THS4304DGK, 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 THS4304DGK part is unused and in its original packaging.
Return procedure for THS4304DGK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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