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Texas Instruments THS4541IRGTR
- Part No.:
- THS4541IRGTR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 16-VFQFN Exposed Pad
- Datasheet:
-
THS4541IRGTR.pdf
- Description:
- IC OPAMP DIFF 1 CIRCUIT 16VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,553
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Product details
Overview
THS4541IRGTR from Texas Instruments is a negative-rail-input, rail-to-rail-output fully differential amplifier (FDA) optimized for high-performance, low-power ADC driving. It delivers 500MHz small-signal bandwidth at G = 2 V/V, 850MHz gain-bandwidth product, 1500V/µs slew rate, –95dBc HD2 and –90dBc HD3 at 10MHz (2VPP), and operates from 2.7V to 5.4V single supply. It enables dc-coupled interface between ground-referenced bipolar sources and SAR/ΔΣ/pipeline ADCs.
For engineers reviewing the THS4541IRGTR datasheet, THS4541IRGTR pinout, THS4541IRGTR application, or THS4541IRGTR equivalent, key selection criteria include negative-rail input capability, rail-to-rail output swing, Vocm-controlled common-mode setting, power-down functionality (2µA), and robust 50Ω load drive - all critical for precision data acquisition signal chains.
Technical Context
The THS4541IRGTR uses a voltage-feedback FDA architecture with separate feedback paths for OUT+ and OUT–, enabling precise differential gain control and common-mode rejection. Its negative-rail input stage allows direct dc coupling of ground-centered signals without level-shifting circuitry, while rail-to-rail output supports full dynamic range utilization across 2.7V–5.4V supplies.
Vocm pin provides active control of output common-mode voltage with 0.982V/V gain, 150MHz bandwidth, and ±2mV offset at 25°C. Power-down mode reduces quiescent current to ≤8µA with 60ns turn-off and 100ns turn-on delays, preserving system-level power efficiency without sacrificing settling performance (4ns to 1%, 8ns to 0.1%).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-signal BW (G=2) | 500MHz - supports wideband signal conditioning up to Nyquist of >250MSPS ADCs |
| Gain-bandwidth product | 850MHz - enables stable gain ≥4 at >200MHz, critical for high-resolution pipeline ADC drivers |
| Slew rate | 1500V/µs - ensures faithful reproduction of fast transient signals without slewing distortion |
| HD2 / HD3 @10MHz | –95dBc / –90dBc - preserves SFDR >90dB in 12–16-bit ADC front-ends |
| Input voltage noise | 2.2nV/√Hz - minimizes added noise in low-amplitude, high-gain sensor interfaces |
| Quiescent current | 10.1mA @5V - balances performance and power for density-constrained data acquisition systems |
| Power-down current | 2µA typical - enables rapid sleep/wake cycles in battery-powered or duty-cycled measurement systems |
Pinout & Package
THS4541IRGTR is packaged in a 16-pin VQFN (RGT) with 3mm × 3mm footprint and exposed thermal pad. Pin functions are validated per TI SLOS375B Rev FEBRUARY 2024.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN+, IN– | Differential input pair | Negative-rail-input stage accepts signals down to Vs–; enables true dc-coupled bipolar source interfacing |
| OUT+, OUT– | Differential outputs | Rail-to-rail swing supports full-scale ADC input range; closed-loop output impedance <0.1Ω at 10MHz |
| Vocm | Common-mode control input | Directly sets output common-mode voltage with 0.982V/V gain; default midsupply when open |
| PD | Power-down enable | Logic-high = normal operation; logic-low = 2µA standby; 60ns turn-off ensures fast power gating |
| FB+, FB– | Output feedback terminals | Enable independent loop control for OUT+ and OUT–; support both ac- and dc-coupled configurations |
| Vs+, Vs– | Power supply pins | Four Vs+ and four Vs– pins reduce supply impedance; exposed thermal pad must be soldered to PCB ground/power plane |
Key Features
| Feature | Design Value |
|---|---|
| Negative-rail input (NRI) | Accepts input common-mode down to Vs– – 0.1V, eliminating need for input biasing networks in dc-coupled applications |
| Rail-to-rail output (RRO) | Delivers >99% of supply rail-to-rail swing into 500Ω loads, maximizing ADC effective resolution |
| Vocm-controlled common-mode | Enables precise matching of ADC input common-mode requirements via external voltage or DAC |
| Robust 50Ω load drive | Stable operation with Rload ≥ 50Ω simplifies interface to high-speed ADC inputs and transmission lines |
| Low offset drift | ±0.5µV/°C ensures <10µV total offset shift over –40°C to +125°C, critical for precision instrumentation |
Applications
| High-Speed SAR ADC Driver | Differential Active Filter |
|---|---|
Use Scenario: Driving 16-bit, 1MSPS–5MSPS SAR ADCs (e.g., ADS8860) with dc-coupled, ground-referenced sensor outputs. IC Role / Device Role / Timing Role: Fully differential amplifier providing gain, common-mode level translation, and driver isolation. Use Value: NRI enables direct connection to ±2.5V sensor outputs; RRO ensures full utilization of ADC input range; 1500V/µs slew rate prevents distortion on fast step transitions. | Use Scenario: Implementing 2nd-order Chebyshev low-pass filter before pipeline ADC (e.g., ADS54J60) in communications receiver IF chain. IC Role / Device Role / Timing Role: Active filter core with programmable Vocm and matched differential path. Use Value: 500MHz bandwidth supports filter cutoffs up to 100MHz; low 2.2nV/√Hz noise preserves SNR; differential topology rejects common-mode interference. |
| Single-Ended to Differential Converter | DC-Coupled DAC Output Interface |
Use Scenario: Converting legacy single-ended analog outputs (e.g., op-amp buffers, DACs) to differential signals for modern ADCs. IC Role / Device Role / Timing Role: Precision gain stage with configurable common-mode reference and high CMRR (>85dB). Use Value: Eliminates external level-shifting components; Vocm pin allows seamless alignment with ADC's required input common-mode voltage. | Use Scenario: Interfacing high-resolution, dc-accurate DACs (e.g., DAC8775) to differential-input ADCs in closed-loop control systems. IC Role / Device Role / Timing Role: Bidirectional dc-coupled buffer with ultra-low offset drift and rail-to-rail swing. Use Value: ±0.5µV/°C drift maintains accuracy over temperature; NRI accommodates DAC outputs referenced to ground or negative rails. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fully differential amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADA4932-1ACPZ-R7 | Pin-compatible VQFN-16; lower GBW (650MHz), higher IQ (15.5mA), no power-down | Higher power consumption limits use in portable or thermally constrained designs; lacks PD function for dynamic power management | Select when absolute pin compatibility with existing ADA4932-1 layouts is required and power-down is unnecessary |
| THS4561IRGET | Same family, WQFN-10 package; identical NRI/RRO, but lower bandwidth (320MHz G=2), higher noise (3.3nV/√Hz) | Smaller footprint suits space-limited designs, but insufficient for >150MHz signal bandwidths or demanding SFDR targets | Select when board area is critical and bandwidth requirements are ≤125MHz with relaxed distortion specs |
Compared with ADA4932-1 and THS4561, the THS4541IRGTR uniquely combines 500MHz bandwidth, 2.2nV/√Hz noise, and 2µA power-down in a thermally enhanced VQFN-16 - making it optimal for high-density, high-SFDR, and dynamically powered data acquisition systems.
Availability
THS4541IRGTR is available at Aetrix Electronics and suitable for high-speed data acquisition, precision instrumentation, and communications infrastructure requiring stable component supply, extended temperature operation (–40°C to +125°C), and long-term production continuity.
Supply support for THS4541IRGTR 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, embedded processing, and connectivity technologies, with deep expertise in precision signal chain solutions.
The THS4541IRGTR belongs to TI's high-speed, low-power FDA product line designed specifically for dc- or ac-coupled ADC/DAC interface applications in test equipment, medical imaging, and industrial automation where accuracy, bandwidth, and power efficiency are co-optimized.
FAQ
What is the maximum operating temperature range for the THS4541IRGTR?
The THS4541IRGTR is characterized for continuous operation from –40°C to +125°C ambient temperature. This extended range is validated across all key specifications including offset drift (±0.5µV/°C), harmonic distortion, and power-down current, making THS4541IRGTR suitable for under-hood automotive sensors, industrial PLC modules, and outdoor instrumentation.
Does the THS4541IRGTR support single-supply operation?
Yes, the THS4541IRGTR supports true single-supply operation from 2.7V to 5.4V. With negative-rail input and rail-to-rail output, it enables dc-coupled signal conditioning from ground-referenced sources without external level-shifting components - a key advantage over traditional FDAs requiring split supplies for bipolar input handling.
How does the Vocm pin function in the THS4541IRGTR?
The Vocm pin on the THS4541IRGTR directly controls the average voltage of the differential output pair with 0.982V/V gain and ±2mV offset at 25°C. When left open, it defaults to midsupply. Driving Vocm with a precision voltage or DAC allows exact alignment with the common-mode requirement of downstream ADCs like the ADS54J60 or AD9680, eliminating matching errors.
What is the small-signal bandwidth of the THS4541IRGTR at G = 1?
The THS4541IRGTR achieves 620MHz small-signal bandwidth at G = 1 (5V supply), as specified in Section 6.5 of the datasheet. This bandwidth remains stable across supply voltages (600MHz at 3V) and supports wideband applications such as IF sampling, broadband active filtering, and high-frequency test equipment signal paths.
Is the THS4541IRGTR pin-compatible with any industry-standard FDAs?
Yes, the THS4541IRGTR in the RGT (VQFN-16) package is explicitly pin-compatible with the Analog Devices ADA4932-1, as confirmed in Section 2 of the datasheet. This allows drop-in replacement in existing designs using ADA4932-1, though users must verify power-down behavior and Vocm response differences in their specific layout and firmware.
THS4541IRGTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Differential
- Number of Circuits:
- 1
- Output Type:
- Differential, Rail-to-Rail
- Slew Rate:
- 1500V/µs
- Gain Bandwidth Product:
- 850 MHz
- -3db Bandwidth:
- 620 MHz
- Current - Input Bias:
- 10 µA
- Voltage - Input Offset:
- 450 µV
- Current - Supply:
- 10.1mA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 5.4 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-VQFN (3x3)
THS4541IRGTR FAQ
1.How can I place an order for THS4541IRGTR through Aetrix?
Please submit a Request for Quotation (RFQ) for THS4541IRGTR 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 THS4541IRGTR reliable?
The price and inventory of THS4541IRGTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for THS4541IRGTR is usually 5 days.
3.What payment methods are accepted for THS4541IRGTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for THS4541IRGTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for THS4541IRGTR?
THS4541IRGTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your THS4541IRGTR 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 THS4541IRGTR?
For technical support, including THS4541IRGTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your THS4541IRGTR requirements.
6.How does Aetrix verify that THS4541IRGTR is sourced from the original manufacturer or authorized distributors?
All THS4541IRGTR 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 THS4541IRGTR meets industry standards.
7.What is the process for return or replacement of THS4541IRGTR?
All THS4541IRGTR units undergo pre-shipment inspection (PSI). If there is an issue with THS4541IRGTR, 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 THS4541IRGTR part is unused and in its original packaging.
Return procedure for THS4541IRGTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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