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Texas Instruments THS4511RGTR
- Part No.:
- THS4511RGTR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 16-VFQFN Exposed Pad
- Datasheet:
-
THS4511RGTR.pdf
- Description:
- IC OPAMP DIFF 1 CIRCUIT 16VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,724
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Product details
Overview
THS4511RGTR from Texas Instruments is a wideband, fully-differential operational amplifier optimized for 5-V single-supply data-acquisition systems. It delivers 1.6 GHz small-signal bandwidth (G = 0 dB), 4900 V/µs slew rate, –72 dBc HD2 and –87 dBc HD3 at 70 MHz, 2 nV/√Hz input voltage noise, and precise output common-mode control within ±5 mV of set point - enabling high-fidelity ADC driving in medical imaging and test equipment.
For engineers reviewing the THS4511RGTR datasheet, THS4511RGTR pinout, THS4511RGTR application, or THS4511RGTR equivalent, key selection criteria include differential settling time (3.3 ns to 1%), OIP3 (42 dBm at 70 MHz), power-down quiescent current (0.65 mA), CM input voltage range (1.25 V to 3.75 V), and QFN-16 thermal pad requirements for junction temperature management.
Technical Context
The THS4511RGTR employs a fully-differential architecture with internal common-mode feedback that maintains output common-mode voltage within 5 mV of the CM pin setting when biased between 1.25 V and 3.75 V. Its unity-gain stability and 0 dB minimum gain support direct connection to high-speed ADC inputs without external gain stages.
It integrates dedicated CM control circuitry with 250 MHz small-signal bandwidth and 110 V/µs slew rate, independent of main signal path operation. Input common-mode range extends from –0.3 V to 2.3 V (vs. 0 V ground), supporting dc-coupled single-ended sources into differential outputs while maintaining low harmonic distortion across 70 MHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-Signal Bandwidth | 1.6 GHz at G = 0 dB - enables baseband-to-RF signal conditioning up to UHF without gain peaking or phase degradation |
| Slew Rate | 4900 V/µs - supports clean 2 VPP step response with 0.5 ns rise/fall times for pulsed radar and burst-mode applications |
| 1% Settling Time | 3.3 ns for 2 V step - meets timing budget for >300 MSPS ADC sampling with minimal aperture jitter contribution |
| HD2 / HD3 @ 70 MHz | –72 dBc / –87 dBc - preserves SFDR >80 dB in 14-bit+ data acquisition channels |
| OIP3 | 42 dBm at 70 MHz - ensures linearity headroom for multi-tone wireless IF sampling and spectrum analysis front-ends |
| Input Voltage Noise | 2 nV/√Hz above 10 MHz - minimizes added noise floor in wideband receiver chains |
| Power-Down Current | 0.65 mA - reduces system standby power in portable test instruments and battery-backed DAQ modules |
Pinout & Package
The THS4511RGTR is housed in a 16-pin leadless QFN (RGT) package with exposed thermal pad, requiring solder connection to PCB ground plane for thermal integrity and junction temperature control below +125°C continuous operation limit.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NC) | No internal connection | Must remain unconnected; no routing or copper fill allowed |
| 2 (VIN–) | Inverting amplifier input | Differential input node; matched layout critical for CMRR >90 dB |
| 3 (VOUT+) | Noninverting amplifier output | Positive-side differential output; requires 50-Ω termination for RF performance |
| 4, 9 (CM) | Common-mode voltage input | Set point for output common-mode voltage; default 2.5 V when floating |
| 5–8 (VS+) | Positive power supply input | Four parallel pins reduce inductance; each requires local 0.1 µF + 10 µF decoupling |
| 10 (VOUT–) | Inverted amplifier output | Negative-side differential output; must mirror VOUT+ trace length and impedance |
| 11 (VIN+) | Noninverting amplifier input | Differential input node; symmetric layout with VIN– essential for balance |
| 12 (PD) | Power-down control | Logic-low active; <0.7 V disables amplifier, >2.1 V enables normal operation |
| 13–16 (VS–) | Negative power supply input | Four parallel ground pins tied to thermal pad; mandatory low-impedance ground plane |
Key Features
| Feature | Design Value |
|---|---|
| Fully-differential architecture | Eliminates even-order harmonics and common-mode interference in mixed-signal PCB layouts |
| Output common-mode control | Maintains <5-mV offset from CM pin voltage over 1.25–3.75 V range, enabling direct interface to mid-rail-referenced ADCs |
| Unity-gain stable design | Operates reliably at G = 0 dB without external compensation, reducing BOM count in buffer configurations |
| High slew rate + fast settling | 4900 V/µs slew rate and 3.3 ns 1% settling allow accurate capture of transient signals in oscilloscope front-ends |
| Low-noise, low-distortion performance | 2 nV/√Hz noise and –87 dBc HD3 at 70 MHz preserve dynamic range in high-resolution medical ultrasound receivers |
Applications
| 5-V Data-Acquisition Systems | High Linearity ADC Amplifiers |
|---|---|
Use Scenario: High-speed digitization of analog sensor outputs in industrial PLC modules with 5-V rail-limited power architecture. IC Role / Device Role / Timing Role: Single-supply fully-differential driver stage preceding 14-bit, 125-MSPS SAR ADC; provides dc-coupled input and midsupply-referenced differential output. Use Value: Enables full-scale input swing without clipping while maintaining >80 dB SFDR via –87 dBc HD3 and 42 dBm OIP3 at 70 MHz. | Use Scenario: Front-end amplification for precision digitization of RF IF signals in spectrum analyzers and vector signal analyzers. IC Role / Device Role / Timing Role: Differential ADC driver with programmable CM output setpoint; operates at G = 0 dB to preserve signal amplitude and phase fidelity. Use Value: Delivers 1.6 GHz bandwidth and 3.3 ns settling to support >300 MSPS sampling clocks with sub-0.1% amplitude error. |
| Medical Imaging | Test and Measurement |
Use Scenario: Signal conditioning in ultrasound beamformer receive paths where low noise and high linearity are critical for image contrast resolution. IC Role / Device Role / Timing Role: Low-noise, wideband differential receiver amplifier driving 16-bit pipeline ADCs; configured with CM = 2.5 V for optimal SNR. Use Value: 2 nV/√Hz input noise and –72 dBc HD2 ensure >74 dB ENOB at 10 MHz, directly improving B-mode image clarity. | Use Scenario: Fast transient capture in handheld oscilloscopes and automated test equipment requiring sub-nanosecond edge fidelity. IC Role / Device Role / Timing Role: Unity-gain buffer with power-down capability; used in channel input stages to isolate source impedance and enable channel muting. Use Value: 0.65 mA power-down current and 10 µs turn-off delay reduce idle power by >98% per channel without sacrificing wake-up responsiveness. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fully-differential amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| THS4509RGTR | Minimum gain = 6 dB; CM input range = 0.75 V to 4.25 V; higher HD2 (–64 dBc @ 100 MHz) | Requires gain stage for unity-gain buffer use; better suited for ac-coupled high-CM-input sources | Select THS4509RGTR only when system gain ≥6 dB and CM input exceeds 0.75 V; not drop-in for THS4511RGTR's 0 dB gain or –0.3 V CM low limit |
| LMH5401RTVT | 3.2 GHz bandwidth; 10,000 V/µs slew rate; 5.5 V supply max; no integrated CM control circuit | Lacks on-chip output common-mode regulation; requires external feedback network for CM setpoint | Choose LMH5401RTVT for >2 GHz bandwidth needs where external CM control is acceptable; THS4511RGTR preferred when midsupply-referenced ADC interface is required without added components |
Compared with THS4511RGTR, THS4509RGTR trades 0 dB gain and extended negative CM range for higher minimum gain and reduced low-frequency distortion, while LMH5401RTVT offers wider bandwidth but demands external CM loop design - making THS4511RGTR the optimal choice for compact, dc-coupled, unity-gain ADC driver implementations.
Availability
THS4511RGTR is available at Aetrix Electronics and suitable for 5-V data-acquisition systems, high-linearity ADC amplifier designs, and medical ultrasound front-ends requiring stable component supply, consistent parametric performance, and long-term industrial temperature range support (–40°C to +85°C).
Supply support for THS4511RGTR 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 delivering analog, embedded processing, and connectivity solutions with emphasis on reliability, precision, and energy efficiency.
The THS4511RGTR belongs to TI's high-speed differential amplifier product line, engineered specifically for dc-coupled, single-supply data-acquisition signal chains where low noise, ultra-low distortion, and precise output common-mode control are mandatory.
FAQ
What is the minimum gain configuration supported by the THS4511RGTR?
The THS4511RGTR is specified for minimum gain of 0 dB and is unity-gain stable. It does not require external compensation for G = 0 dB operation, making it suitable as a direct-coupled buffer between single-ended sources and differential ADC inputs. Gain configurations below 0 dB are not supported and may cause instability or degraded AC performance.
Does the THS4511RGTR require external components to set output common-mode voltage?
No - the THS4511RGTR features an integrated output common-mode control circuit. When the CM pins (pins 4 and 9) are left floating, the device defaults to 2.5 V output common-mode voltage. An external voltage between 1.25 V and 3.75 V applied to CM pins sets the output common-mode point with ≤5 mV typical offset, eliminating need for external resistive dividers or op-amp feedback networks.
How is thermal management handled for the THS4511RGTR in the RGT package?
The THS4511RGTR in the 16-pin QFN (RGT) package incorporates an exposed thermal pad on the underside. This pad must be soldered to a solid copper ground plane on the PCB to achieve θJA = 39.5°C/W and prevent junction temperature from exceeding +125°C during continuous operation. Failure to connect the thermal pad risks permanent damage due to thermal runaway under 39.2 mA quiescent current conditions.
Can the THS4511RGTR operate from a supply voltage lower than 5 V?
Yes - the THS4511RGTR is specified for operation from 3.75 V to 5.25 V. At 3.75 V, AC performance degrades moderately: small-signal bandwidth reduces to ~1.3 GHz and OIP3 drops to ~38 dBm at 70 MHz. Full 5-V-rated specifications apply only within the 4.75–5.25 V range; operation below 3.75 V is not characterized and not recommended.
What is the function of the PD (pin 12) terminal on the THS4511RGTR?
The PD (power-down) terminal on the THS4511RGTR is an active-low control input. Driving PD to logic low (<0.7 V) places the amplifier in low-power mode with 0.65 mA quiescent current. Leaving PD open or pulling it high (>2.1 V) enables normal operation at 39.2 mA. Turn-on delay is 55 ns; turn-off delay is 10 µs - enabling rapid channel gating in multi-channel DAQ systems.
THS4511RGTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- Differential
- Number of Circuits:
- 1
- Output Type:
- Differential
- Slew Rate:
- 4900V/µs
- Gain Bandwidth Product:
- 2 GHz
- -3db Bandwidth:
- 1.6 GHz
- Current - Input Bias:
- 8 µA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 39.2mA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 3.75 V
- Voltage - Supply Span (Max):
- 5.25 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-VQFN (3x3)
THS4511RGTR FAQ
1.How can I place an order for THS4511RGTR through Aetrix?
Please submit a Request for Quotation (RFQ) for THS4511RGTR 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 THS4511RGTR reliable?
The price and inventory of THS4511RGTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for THS4511RGTR is usually 5 days.
3.What payment methods are accepted for THS4511RGTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for THS4511RGTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for THS4511RGTR?
THS4511RGTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your THS4511RGTR 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 THS4511RGTR?
For technical support, including THS4511RGTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your THS4511RGTR requirements.
6.How does Aetrix verify that THS4511RGTR is sourced from the original manufacturer or authorized distributors?
All THS4511RGTR 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 THS4511RGTR meets industry standards.
7.What is the process for return or replacement of THS4511RGTR?
All THS4511RGTR units undergo pre-shipment inspection (PSI). If there is an issue with THS4511RGTR, 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 THS4511RGTR part is unused and in its original packaging.
Return procedure for THS4511RGTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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