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Texas Instruments THS4303RGTRG4
- Part No.:
- THS4303RGTRG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 16-VFQFN Exposed Pad
- Datasheet:
-
THS4303RGTRG4.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 16VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,139
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Product details
Overview
THS4303RGTRG4 from Texas Instruments is a wideband, fixed-gain voltage-feedback operational amplifier with +10 V/V (20 dB) closed-loop gain, 1.8 GHz small-signal bandwidth, 5500 V/µs slew rate, and 2.5 nV/√Hz input-referred noise. It operates from single 3–5 V or dual ±1.5–±2.5 V supplies and features power-down mode (1.4 mA quiescent current), making it suitable for high-speed IF amplification in wireless transceivers.
For engineers reviewing the THS4303RGTRG4 datasheet, THS4303RGTRG4 pinout, THS4303RGTRG4 application, or THS4303RGTRG4 equivalent, key selection considerations include its fixed +10 gain architecture, PowerPAD™ thermally enhanced RGT-16 package, RF-grade distortion performance (–76 dBc HD3 at 70 MHz), and verified use in ADC preamplifier and DAC output buffer circuits.
Technical Context
The THS4303RGTRG4 implements a voltage-feedback topology with internal fixed 450 Ω Rf and 50 Ω Rg resistors, enabling stable +10 V/V noninverting gain without external feedback components. Its design targets RF and IF signal chains where low group delay variation and minimal phase nonlinearity are critical.
It integrates a dedicated power-down pin (PD) that reduces quiescent current from 48 mA to ≤1.4 mA while maintaining defined output impedance (470 Ω at 100 kHz in PD mode). The device uses TI's proprietary high-speed complementary bipolar process and requires thermal connection of the exposed PowerPAD to a PCB ground plane for junction temperature control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-signal bandwidth | 1.8 GHz at G = +10, RL = 100 Ω - enables baseband-to-IF amplification up to L-band without gain peaking |
| Slew rate | 5500 V/µs - supports clean 2 VPP transient response with <1 ns rise time into 100 Ω |
| Input noise density | 2.5 nV/√Hz at f = 1 MHz - preserves SNR in low-amplitude RF signal conditioning paths |
| Harmonic distortion | HD2 = –65 dBc, HD3 = –76 dBc at 70 MHz, VO = 1 VPP - meets LTE/WiMAX ACLR requirements |
| OIP3 | 34 dBm at 100 MHz - ensures linear operation in multi-tone receiver front-ends |
| Output drive | ±180 mA into 5 Ω - directly drives 50 Ω transmission lines or ADC input networks |
| Supply range | Single 3–5 V or dual ±1.5–±2.5 V - compatible with modern low-voltage RF subsystems |
Pinout & Package
The THS4303RGTRG4 is housed in a 16-pin QFN package (RGT-16) with an exposed thermal pad (PowerPAD™) on the underside requiring solder connection to a PCB thermal plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 8 | Ground / Thermal Pad Connection Points | Multiple GND pins and exposed PowerPAD provide low-inductance return path and thermal dissipation (ΘJC = 2.4°C/W) |
| 9 | VIN− | Inverting input terminal - used as virtual ground in noninverting configuration with internal Rg |
| 10 | Rg | Internal 50 Ω gain-setting resistor terminal - connects internally to VIN− and VOUT |
| 11 | Rf | Internal 450 Ω feedback resistor terminal - connects internally to VIN− and VOUT |
| 12 | VIN+ | Noninverting input - high-impedance (1.6 MΩ||1 pF) node for signal injection |
| 13 | NC | No-connect - must be left floating or tied to GND per layout guidelines |
| 14 | PD | Power-down control - logic-low (<0.9 V) disables amplifier; logic-high (>1.5 V) enables |
| 15 | VS− | Negative supply rail - required for dual-supply operation; tied to GND for single-supply |
| 16 | VS+ | Positive supply rail - accepts 3–5 V (single) or ±1.5–±2.5 V (dual) |
| 17 (PowerPAD) | Thermal Ground | Exposed copper pad - must be soldered to ≥1 cm² internal/external GND plane for thermal reliability |
Key Features
| Feature | Design Value |
|---|---|
| Fixed +10 V/V gain | Eliminates external feedback resistors, reducing layout sensitivity and board space vs. configurable op amps |
| 1.8 GHz bandwidth | Supports full-power operation up to 1.5 GHz (G = +10), enabling direct IF sampling at 140 MSPS+ ADCs |
| Power-down mode | Reduces quiescent current from 48 mA to ≤1.4 mA with 42 ns turn-on delay - ideal for TDD systems |
| Low distortion at RF | –76 dBc HD3 at 70 MHz and 34 dBm OIP3 enable high-fidelity signal reconstruction in wideband receivers |
| PowerPAD thermal package | Enables 2.53 W power dissipation at TA = 25°C - sustains continuous RF output without thermal shutdown |
Applications
| Wireless IF Amplifier | High-Speed ADC Preamplifier |
|---|---|
Use Scenario: Amplifying 70–300 MHz IF signals in LTE/WiMAX basestation receivers before downconversion. IC Role / Device Role / Timing Role: Fixed-gain IF amplifier providing 20 dB gain, low group delay, and high OIP3 to preserve adjacent channel rejection. Use Value: Enables >70 dB ACLR with single-stage amplification due to –76 dBc HD3 and 34 dBm OIP3 at 100 MHz. | Use Scenario: Driving the analog input of a 14-bit, 250 MSPS pipeline ADC in radar digitization modules. IC Role / Device Role / Timing Role: High-slew-rate buffer delivering 2 VPP signals with <1 ns settling to meet ADC aperture uncertainty specs. Use Value: 5500 V/µs slew rate and 1.8 GHz bandwidth ensure <0.1% gain error across 100 MHz input bandwidth. |
| DAC Output Buffer | Test & Measurement Signal Generator |
Use Scenario: Conditioning the output of a high-speed DAC (e.g., DAC3484) in arbitrary waveform generators. IC Role / Device Role / Timing Role: Low-noise, low-distortion buffer isolating DAC core from reactive loads while preserving SFDR. Use Value: 2.5 nV/√Hz input noise and –85 dBc IMD3 at 100 MHz maintain >75 dB SFDR up to 200 MHz. | Use Scenario: Building modular RF signal sources for lab-grade spectrum analyzer calibration. IC Role / Device Role / Timing Role: Wideband gain block in programmable output stages, supporting 10 MHz–1 GHz frequency sweeps. Use Value: Stable 1.8 GHz bandwidth and flat gain response (±0.3 dB) enable traceable amplitude accuracy across band. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar wideband fixed-gain amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMH6401IRRCR | DC-coupled, 1.9 GHz bandwidth, 6500 V/µs slew rate, but requires external gain-setting resistors (not fixed-gain) | Used in DC-coupled IF chains where variable gain or offset adjustment is needed | Select when programmable gain or dc precision is required; THS4303RGTRG4 preferred for simplified RF layout |
| ADA4870ARQZ | 730 MHz bandwidth, ±10 V output swing, 1000 mA drive, but higher 7 nV/√Hz noise and no power-down | Deployed in high-voltage pulse generation, not RF signal chains | Choose for high-output-voltage applications; THS4303RGTRG4 remains optimal for low-noise, low-distortion RF gain |
Compared with LMH6401IRRCR and ADA4870ARQZ, the THS4303RGTRG4 uniquely combines factory-trimmed +10 gain, sub-3 nV/√Hz noise, and integrated power-down-enabling compact, thermally robust RF amplifier stages without external gain components or discrete enable circuitry.
Availability
THS4303RGTRG4 is available at Aetrix Electronics and suitable for wireless infrastructure, high-speed data acquisition, and test equipment requiring stable component supply with guaranteed long-term availability and full traceability.
Supply support for THS4303RGTRG4 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 and RF signal chain solutions.
The THS4303RGTRG4 belongs to TI's THS high-speed op amp family, engineered specifically for wideband communication systems demanding ultra-low distortion, high slew rate, and thermal reliability in compact surface-mount packages.
FAQ
What is the operating supply voltage range for the THS4303RGTRG4?
The THS4303RGTRG4 operates from a single 3 V to 5 V supply or dual ±1.5 V to ±2.5 V supplies. At 5 V single supply, it delivers full 1.8 GHz bandwidth and 5500 V/µs slew rate; at 3 V, bandwidth reduces to ~1.5 GHz with slightly increased distortion. Absolute maximum supply is 6 V, but operation beyond 5 V voids specified AC performance.
Does the THS4303RGTRG4 require external feedback resistors to achieve its +10 gain?
No. The THS4303RGTRG4 integrates precise internal 450 Ω Rf and 50 Ω Rg resistors, delivering factory-trimmed +10 V/V noninverting gain without any external components. This eliminates resistor matching errors, parasitic capacitance effects, and board area typically consumed by discrete feedback networks in high-frequency op amp designs.
How does the power-down feature of the THS4303RGTRG4 function in practice?
The THS4303RGTRG4's PD pin enables hardware-controlled power-down: driving PD <0.9 V disables the amplifier, reducing quiescent current to ≤1.4 mA with 35 ns turnoff delay; driving PD >1.5 V enables full operation with 42 ns turnon delay. The output remains active (not high-Z) during power-down, so external isolation is required if bus contention must be avoided.
What thermal design considerations apply to the THS4303RGTRG4's RGT-16 PowerPAD package?
The THS4303RGTRG4's RGT-16 package requires soldering the exposed PowerPAD to a minimum 1 cm² internal or external PCB ground plane. Without this thermal connection, junction temperature exceeds 125°C under load, causing distortion increase and potential reliability failure. TI specifies ΘJA = 39.5°C/W only with 2 oz. copper and proper thermal via array beneath the pad.
Can the THS4303RGTRG4 drive capacitive loads such as ADC inputs directly?
No-capacitive loads >2 pF degrade stability and cause peaking. TI recommends inserting a series isolation resistor (RISO) between THS4303RGTRG4 output and the load: 25 Ω for 10 pF, 15 Ω for 47 pF, or 10 Ω for 100 pF. This maintains flat frequency response and prevents oscillation, especially critical when driving SAR or pipeline ADC input capacitance.
THS4303RGTRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 5500V/µs
- Gain Bandwidth Product:
- 18 GHz
- -3db Bandwidth:
- 1.8 GHz
- Current - Input Bias:
- 7 µA
- Voltage - Input Offset:
- 1.5 mV
- Current - Supply:
- 34mA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 3 V
- Voltage - Supply Span (Max):
- 5 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-VQFN (3x3)
THS4303RGTRG4 FAQ
1.How can I place an order for THS4303RGTRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for THS4303RGTRG4 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 THS4303RGTRG4 reliable?
The price and inventory of THS4303RGTRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for THS4303RGTRG4 is usually 5 days.
3.What payment methods are accepted for THS4303RGTRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for THS4303RGTRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for THS4303RGTRG4?
THS4303RGTRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your THS4303RGTRG4 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 THS4303RGTRG4?
For technical support, including THS4303RGTRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your THS4303RGTRG4 requirements.
6.How does Aetrix verify that THS4303RGTRG4 is sourced from the original manufacturer or authorized distributors?
All THS4303RGTRG4 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 THS4303RGTRG4 meets industry standards.
7.What is the process for return or replacement of THS4303RGTRG4?
All THS4303RGTRG4 units undergo pre-shipment inspection (PSI). If there is an issue with THS4303RGTRG4, 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 THS4303RGTRG4 part is unused and in its original packaging.
Return procedure for THS4303RGTRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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