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Texas Instruments THS4141ID
- Part No.:
- THS4141ID
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
THS4141ID.pdf
- Description:
- IC OPAMP DIFF 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:108
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Product details
Overview
THS4141ID from Texas Instruments is a high-speed fully differential amplifier designed for precision signal conditioning in data acquisition systems. It delivers 160 MHz –3 dB bandwidth (±15 V supply), 450 V/µs slew rate, –79 dB third-harmonic distortion at 1 MHz, and 6.5 nV/√Hz input-referred voltage noise. Its primary circuit role is differential ADC driver in single-ended-to-differential conversion applications.
For engineers reviewing the THS4141ID datasheet, THS4141ID pinout, THS4141ID application, or THS4141ID equivalent, key selection criteria include differential output swing (±12.9 V at ±15 V), VOCM-controlled common-mode level setting, thermal management requirements for PowerPAD™ MSOP-8 package, and resistor matching sensitivity for CMRR preservation.
Technical Context
The THS4141ID implements a true fully differential signal path from input to output using TI's BiComI complementary bipolar process, enabling balanced rejection of common-mode noise at both input and power supply nodes. Its symmetrical architecture inherently cancels second-harmonic distortion and improves PSRR beyond conventional op-amps.
Unlike standard differential amplifiers, the THS4141ID features independent VOCM control for precise DC-level setting of differential outputs, supports operation from 5-V single supply to ±15-V dual supply, and maintains stable performance across –40°C to +85°C industrial temperature range without shutdown functionality (distinguishing it from THS4140ID).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| –3 dB Bandwidth | 160 MHz at ±15 V supply - enables baseband signal conditioning up to Nyquist frequency of 80-MSPS ADCs |
| Slew Rate | 450 V/µs - supports fast transient response for high-fidelity pulse and video signal amplification |
| THD @ 1 MHz | –79 dB differential-in/differential-out - meets 16-bit ADC driver requirements with <0.012% distortion |
| Input Voltage Noise | 6.5 nV/√Hz at 10 kHz - preserves SNR in low-amplitude sensor front-end and precision measurement paths |
| Common-Mode Input Range | –4 V to +4.5 V at ±5 V supply - accommodates rail-to-rail input signals while maintaining linearity |
| Output Voltage Swing | ±12.9 V at ±15 V supply - delivers full-scale differential drive for 24-bit SAR and sigma-delta ADCs |
| Supply Range | 5 V single supply or ±2 V to ±16.5 V dual supply - enables flexible integration in mixed-signal industrial and test equipment |
Pinout & Package
The THS4141ID is packaged in an 8-pin MSOP PowerPAD™ (DGN) thermally enhanced package with exposed thermal pad on underside requiring solder connection to PCB copper pour for junction temperature control.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: VIN− | Inverting input | Differential input node; requires matched trace length and impedance to VIN+ to preserve CMRR |
| 2: VOCM | Output common-mode control | Sets DC level of both VOUT+ and VOUT−; bypass with 0.1 µF capacitor to suppress noise coupling |
| 3: VCC+ | Positive supply | Connect to decoupled +V rail; use 6.8 µF tantalum + 0.1 µF ceramic placed ≤2.54 mm from pin |
| 4: VOUT+ | Positive differential output | Drives one leg of differential ADC input; series 20 Ω resistor required for >10 pF capacitive loads |
| 5: VIN+ | Non-inverting input | Differential input node; symmetric layout critical to minimize imbalance-induced harmonic distortion |
| 6: NC | No connect | Internally unused; must remain unconnected per datasheet to avoid parasitic coupling |
| 7: VCC− | Negative supply | Connect to decoupled −V rail; same decoupling as VCC+; serves as PD reference for THS4140 only |
| 8: VOUT− | Negative differential output | Drives complementary ADC input leg; maintains phase inversion relative to VOUT+ for common-mode rejection |
Key Features
| Feature | Design Value |
|---|---|
| Fully differential I/O architecture | Enables 2× dynamic range vs single-ended amplifiers by splitting 2 VPP signal into two 1 VPP anti-phase outputs |
| VOCM-controlled output bias | Allows direct interface to ADC reference voltage (e.g., VREF) without level-shifting circuitry |
| High PSRR & CMRR | 84 dB CMRR and 70 dB PSRR at DC ensure immunity to supply ripple and ground noise in noisy industrial environments |
| PowerPAD™ thermal enhancement | θJC = 4.7 °C/W in DGN package enables 1.71 W power dissipation at TA = 25°C with proper PCB copper area |
| Resistor-matching sensitivity | 1% tolerance feedback resistors required to maintain >75 dB CMRR and prevent second-harmonic degradation |
Applications
| High-Speed Data Acquisition | Digital Oscilloscope Front-End |
|---|---|
Use Scenario: Driving 16-bit, 100-MSPS differential SAR ADC in automated test equipment. IC Role / Device Role / Timing Role: Single-ended-to-differential converter and antialiasing filter driver with gain = 1 configuration. Use Value: Achieves –79 dB THD at 1 MHz, enabling >90 dB SFDR and preserving ENOB ≥14.5 bits under full-scale input. | Use Scenario: Conditioning 500-MHz analog input signals prior to digitization in portable oscilloscopes. IC Role / Device Role / Timing Role: Wideband differential transmitter with 160 MHz bandwidth and 450 V/µs slew rate. Use Value: Supports 1-ns rise time fidelity and minimizes settling error (<0.01% in 304 ns) for accurate waveform reconstruction. |
| Medical Imaging Signal Chain | Communications Baseband Processing |
Use Scenario: Amplifying low-amplitude ultrasound echo signals before digitization in portable ultrasound systems. IC Role / Device Role / Timing Role: Low-noise differential ADC driver with 6.5 nV/√Hz input voltage noise and VOCM referenced to ADC mid-rail. Use Value: Maintains >72 dB SNR across 1–10 MHz imaging band, directly improving image contrast resolution. | Use Scenario: Level-shifting and driving I/Q baseband signals in software-defined radio transceivers. IC Role / Device Role / Timing Role: Differential output stage with programmable common-mode offset via VOCM pin. Use Value: Enables seamless interface to 1.8-V or 3.3-V ADCs without external level translators, reducing BOM count. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fully differential amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| THS4131IDGN | 150 MHz bandwidth, 51 V/µs slew rate, 1.3 nV/√Hz noise - lower bandwidth but superior noise performance | Better suited for low-frequency, ultra-low-noise applications (e.g., precision weigh scales) where THS4141ID's speed is unnecessary | Select THS4131IDGN when noise dominates over speed; THS4141ID remains optimal for >50-MHz signal bandwidths |
| ADA4941-1ARMZ | 50 MHz bandwidth, 340 V/µs slew rate, 2.9 nV/√Hz noise, rail-to-rail output - lower speed but wider input common-mode range (up to VCC) | Preferred for single-supply, low-voltage (3.3 V) systems where THS4141ID's ±15 V capability is excessive | Choose ADA4941-1ARMZ for battery-powered instrumentation; THS4141ID excels in high-voltage, high-fidelity lab equipment |
Compared with THS4131IDGN and ADA4941-1ARMZ, the THS4141ID uniquely balances ultra-high speed (160 MHz), high slew rate (450 V/µs), and moderate noise (6.5 nV/√Hz), making it the only option among the three capable of driving 100-MSPS+ ADCs without bandwidth limitation or slew-induced distortion.
Availability
THS4141ID is available at Aetrix Electronics and suitable for high-speed data acquisition, medical imaging front-ends, and communications baseband processing requiring stable component supply across extended temperature ranges.
Supply support for THS4141ID 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-performance amplifier design and manufacturing.
The THS4141ID belongs to TI's High-Speed Fully Differential I/O Amplifier product line, engineered specifically for precision differential signal conditioning in data converter interfaces, antialiasing filtering, and high-fidelity transmission systems.
FAQ
What is the maximum operating temperature range for the THS4141ID?
The THS4141ID is rated for industrial temperature operation from –40°C to +85°C, as indicated by its "I" suffix. This range ensures reliable performance in demanding environments such as factory automation controllers, outdoor test equipment, and medical diagnostic devices where ambient temperatures exceed commercial limits. The device maintains specified electrical characteristics-including bandwidth, THD, and output swing-across this full range without derating.
Does the THS4141ID support power-down mode?
No, the THS4141ID does not include a power-down (PD) pin or shutdown functionality. That feature is exclusive to the THS4140 variant (e.g., THS4140ID). The THS4141ID is a fixed-function, always-on differential amplifier optimized for continuous high-speed operation. Designers requiring low-power idle states must select THS4140ID or implement external supply gating, which may compromise signal integrity during transitions.
How should the VOCM pin be configured for optimal THS4141ID performance?
The VOCM pin on the THS4141ID must be bypassed with a 0.1 µF ceramic capacitor to ground, placed within 2 mm of the pin, to suppress high-frequency noise coupling. For ADC interfacing, connect VOCM directly to the ADC's reference voltage (VREF) output. If no external reference exists, VOCM may float to mid-rail (VCC/2) in single-supply configurations, but this introduces drift sensitivity-TI recommends active biasing for stability in precision applications.
What package type is used for the THS4141ID, and why is thermal design critical?
The THS4141ID uses the MSOP-8 PowerPAD™ (DGN) package with an exposed thermal pad on the underside. This pad must be soldered to a minimum 100 mm² copper pour connected to internal ground or power planes via ≥4 thermal vias. Without this, junction temperature exceeds 125°C under typical 16 mA quiescent current, causing distortion increase and long-term reliability risk-TI specifies θJC = 4.7 °C/W only when the PowerPAD™ is properly implemented.
Can the THS4141ID drive a 50-Ω transmission line directly?
No, the THS4141ID cannot drive a 50-Ω load directly due to its 43 Ω open-loop output resistance and instability risk with capacitive loading. To interface with 50-Ω systems, place a 20–50 Ω series resistor at each output (VOUT+ and VOUT−) before the transmission line. This isolates the amplifier from cable capacitance, prevents ringing, and provides source termination-TI validates this configuration for 50-Ω applications in SLOS320F Figure 25.
THS4141ID Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- Differential
- Number of Circuits:
- 1
- Output Type:
- Differential
- Slew Rate:
- 450V/µs
- Gain Bandwidth Product:
- 205 MHz
- -3db Bandwidth:
- 160 MHz
- Current - Input Bias:
- 5.1 µA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 13.2mA
- Current - Output / Channel:
- 85 mA
- Voltage - Supply Span (Min):
- 4 V
- Voltage - Supply Span (Max):
- 33 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
THS4141ID FAQ
1.How can I place an order for THS4141ID through Aetrix?
Please submit a Request for Quotation (RFQ) for THS4141ID 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 THS4141ID reliable?
The price and inventory of THS4141ID are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for THS4141ID is usually 5 days.
3.What payment methods are accepted for THS4141ID?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for THS4141ID transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for THS4141ID?
THS4141ID orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your THS4141ID 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 THS4141ID?
For technical support, including THS4141ID datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your THS4141ID requirements.
6.How does Aetrix verify that THS4141ID is sourced from the original manufacturer or authorized distributors?
All THS4141ID 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 THS4141ID meets industry standards.
7.What is the process for return or replacement of THS4141ID?
All THS4141ID units undergo pre-shipment inspection (PSI). If there is an issue with THS4141ID, 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 THS4141ID part is unused and in its original packaging.
Return procedure for THS4141ID:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
THS4141ID Tags
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