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Texas Instruments THS4141IDR
- Part No.:
- THS4141IDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
THS4141IDR.pdf
- Description:
- IC OPAMP DIFF 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,974
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Product details
Overview
THS4141IDR from Texas Instruments is a high-speed fully differential amplifier designed for precision signal conditioning in ADC driver, antialiasing, and differential transmitter/receiver applications. It delivers 160 MHz –3 dB bandwidth (±15 V supply), 450 V/µs slew rate, –79 dB third-harmonic distortion at 1 MHz, 6.5 nV/√Hz input-referred voltage noise, and operates from ±2.5 V to ±15 V dual supply or 5 V single supply.
For engineers reviewing the THS4141IDR datasheet, THS4141IDR pinout, THS4141IDR application, or THS4141IDR equivalent, key selection criteria include differential output swing (±12.9 V at ±15 V), VOCM-controlled common-mode level setting, matched gain resistor requirements, thermal management via PowerPAD™, and absence of shutdown functionality compared to THS4140.
Technical Context
The THS4141IDR implements a true fully differential signal path-differential input to differential output-using TI's BiComI complementary bipolar process. This architecture enables balanced output rejection of common-mode noise, reduced second-harmonic distortion via symmetrical cancellation, and improved PSRR/CMRR over frequency (75–84 dB CMRR, >65 dB PSRR dc).
Unlike the THS4140, the THS4141IDR omits the PD (power-down) pin and corresponding shutdown circuitry, resulting in fixed operation with no low-power mode. Its VOCM pin sets output common-mode voltage and supports midrail biasing on single supply (VCC/2), enabling direct interface to differential ADCs without transformers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| –3 dB Bandwidth | 160 MHz at ±15 V supply - supports wideband signal acquisition up to ~80 MHz Nyquist-limited sampling |
| Slew Rate | 450 V/µs - enables clean reproduction of fast transient signals without slewing-induced distortion |
| THD @ 1 MHz | –79 dB (differential in/out, 2 VPP) - meets high-fidelity requirements for 16-bit+ ADC drivers |
| Input Voltage Noise | 6.5 nV/√Hz at 10 kHz - preserves SNR in low-level analog front-ends |
| Common-Mode Input Range | –4 V to +4.5 V at ±5 V supply - accommodates rail-to-rail input signals with headroom |
| Output Swing | ±12.9 V at ±15 V supply - delivers full-scale differential drive into 800 Ω loads |
| Supply Range | ±2.5 V to ±15 V dual or 5 V single - supports legacy industrial and modern low-voltage systems |
Pinout & Package
The THS4141IDR is housed in an 8-pin MSOP PowerPAD™ package (DGN), featuring an exposed thermal pad on the underside for enhanced heat dissipation. The package requires soldering the thermal pad to a PCB copper pour connected to ground or a thermal plane per TI SLMA002/SLMA004 guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: VIN− | Inverting input | Differential input node; requires matched external feedback/gain resistors for stable operation |
| 2: VOCM | Output common-mode control | Sets DC level of both outputs; bypass with 0.1 µF capacitor to suppress noise coupling |
| 3: VCC+ | Positive supply | Connect to +V supply rail; decouple with 0.1 µF ceramic + 6.8 µF tantalum capacitors |
| 4: VOUT+ | Positive differential output | Delivers inverted-phase signal relative to VOUT−; drives one leg of differential ADC input |
| 5: VIN+ | Non-inverting input | Differential input node; must maintain layout symmetry with VIN− to preserve CMRR |
| 6: NC | No connect | Internally unused; leave unconnected and unstubbed to avoid parasitic coupling |
| 7: VCC− | Negative supply | Connect to –V supply rail; decouple identically to VCC+ |
| 8: VOUT− | Negative differential output | Delivers non-inverted-phase signal; complements VOUT+ to form balanced output pair |
Key Features
| Feature | Design Value |
|---|---|
| Fully differential I/O architecture | Enables common-mode noise rejection >80 dB and eliminates second-harmonic distortion via output symmetry |
| VOCM-controlled output bias | Allows precise setting of differential output common-mode level for seamless interfacing with ADC reference voltages |
| Wide supply flexibility | Operates from 5 V single supply (VOCM = VCC/2) to ±15 V dual supply - simplifies system power architecture |
| High dynamic range | Delivers 2× the peak-to-peak signal swing of single-ended amplifiers - e.g., 2 VPP differential into 1 VPP ADC inputs |
| PowerPAD™ thermal enhancement | Exposed die paddle reduces θJA to 58.4°C/W - sustains 1.71 W power dissipation at 25°C ambient |
Applications
| High-Speed Data Acquisition | Differential ADC Driver |
|---|---|
Use Scenario: Sampling wideband sensor outputs (e.g., ultrasound, radar IF) at ≥10 MSPS with 16-bit resolution. IC Role / Device Role / Timing Role: Front-end signal conditioner and level shifter driving differential inputs of SAR or pipeline ADCs. Use Value: 160 MHz bandwidth and –79 dB THD ensure minimal signal degradation before digitization, preserving ENOB. | Use Scenario: Driving AD7626, ADS8860, or similar 16–18-bit differential-input ADCs in precision instrumentation. IC Role / Device Role / Timing Role: Single-ended-to-differential converter with programmable VOCM alignment to ADC reference. Use Value: VOCM pin enables direct connection to ADC VREF, eliminating level-shifting components and reducing BOM count. |
| Antialiasing Filter Interface | High-Fidelity Signal Transmission |
Use Scenario: Active low-pass filtering prior to ADC input to suppress out-of-band noise above Nyquist frequency. IC Role / Device Role / Timing Role: Buffer and gain stage within active Sallen-Key or MFB antialiasing filter topology. Use Value: 450 V/µs slew rate prevents step-response overshoot in filter output, maintaining time-domain fidelity. | Use Scenario: Transmitting balanced analog signals across noisy industrial backplanes or cables (e.g., motor control feedback). IC Role / Device Role / Timing Role: Differential line driver with matched output impedance and common-mode rejection. Use Value: Balanced outputs reject coupled EMI/RFI, improving SNR by >20 dB versus single-ended transmission. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fully differential amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| THS4140IDR | Includes PD pin and 880 µA shutdown current; identical AC/DC performance otherwise | Required where system-level power cycling or standby modes are implemented | Select THS4140IDR only if explicit power-down control is needed; THS4141IDR offers simpler biasing and lower quiescent variability |
| THS4131IDR | 150 MHz bandwidth, 51 V/µs slew rate, 1.3 nV/√Hz noise - lower noise but reduced speed | Better suited for medium-bandwidth, ultra-low-noise applications (e.g., audio, precision DAQ) | Choose THS4131IDR when noise dominates over speed; THS4141IDR preferred for >100 MHz signal chains |
Compared with THS4140IDR, THS4141IDR removes shutdown complexity for always-on systems; versus THS4131IDR, it trades 1.3 nV/√Hz noise for 10 MHz extra bandwidth and 399 V/µs higher slew rate-critical for fast-settling, wideband ADC interfaces.
Availability
THS4141IDR is available at Aetrix Electronics and suitable for high-speed data acquisition, differential ADC driver, and antialiasing filter interface applications requiring stable component supply across industrial temperature ranges (–40°C to +85°C).
Supply support for THS4141IDR 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 digital signal technologies with broad industrial, automotive, and communications reach.
The THS4141IDR belongs to TI's High-Speed Fully Differential I/O Amplifier product line, engineered specifically for precision differential signal conditioning in data converter interfaces and wideband communication systems.
FAQ
What is the function of the VOCM pin on the THS4141IDR?
The VOCM pin on the THS4141IDR sets the common-mode voltage level of both differential outputs (VOUT+ and VOUT−). When left unconnected, it defaults to midrail (VCC/2) on single supply or center of the dual-supply range. For optimal noise immunity, TI recommends bypassing VOCM to ground with a 0.1 µF ceramic capacitor. This pin enables precise alignment of the THS4141IDR's output common-mode level to match the reference voltage of downstream differential ADCs-eliminating level-shifting circuitry and improving system accuracy.
Does the THS4141IDR support power-down mode?
No, the THS4141IDR does not support power-down mode. Unlike the pin-compatible THS4140IDR-which includes a dedicated PD (power-down) pin-the THS4141IDR omits this terminal entirely (pin 6 is NC). As a result, the THS4141IDR operates continuously whenever powered. Its quiescent current remains fixed at 16 mA (±5 V) or 15 mA (±15 V), with no low-power state. Designers requiring shutdown capability must select THS4140IDR instead.
What package type is used for the THS4141IDR, and how should the thermal pad be handled?
The THS4141IDR uses the 8-pin MSOP PowerPAD™ package (DGN), which features an exposed thermal pad on the underside of the device. This pad must be soldered to a PCB copper area thermally connected to ground or a dedicated thermal plane. Per TI SLMA002/SLMA004 guidelines, the pad improves thermal resistance (θJA = 58.4°C/W) and enables 1.71 W power dissipation at 25°C ambient. Failure to solder the pad risks exceeding the 125°C maximum junction temperature during sustained operation, degrading THS4141IDR performance and reliability.
How does the THS4141IDR achieve superior harmonic distortion performance?
The THS4141IDR achieves –79 dB third-harmonic distortion at 1 MHz through its fully differential architecture: symmetrical input and output stages cause even-order harmonics (especially second) to cancel at the differential output node, while the BiComI bipolar process ensures high linearity and low intrinsic distortion. Balanced output drive also rejects common-mode noise that could modulate the signal path. These design features-combined with strict external resistor matching (1% tolerance recommended)-enable the THS4141IDR to maintain high spectral purity in demanding ADC driver applications where THD directly impacts effective number of bits (ENOB).
Can the THS4141IDR be used with single-supply operation?
Yes, the THS4141IDR supports single-supply operation from 5 V. In this configuration, the VOCM pin defaults to VCC/2 (2.5 V), establishing the output common-mode level at midrail. Input signals must remain within the specified common-mode input range (–4 V to +4.5 V referenced to VCC−, i.e., ground), and output swing is limited to 1.2–3.8 V (single-ended) or 2.4–7.6 V differential. TI provides application circuits showing direct interface to differential ADCs using single supply, including bypassing VOCM and proper decoupling-enabling transformerless designs and simplified power architecture in space-constrained systems.
THS4141IDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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
THS4141IDR FAQ
1.How can I place an order for THS4141IDR through Aetrix?
Please submit a Request for Quotation (RFQ) for THS4141IDR 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 THS4141IDR reliable?
The price and inventory of THS4141IDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for THS4141IDR is usually 5 days.
3.What payment methods are accepted for THS4141IDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for THS4141IDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for THS4141IDR?
THS4141IDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your THS4141IDR 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 THS4141IDR?
For technical support, including THS4141IDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your THS4141IDR requirements.
6.How does Aetrix verify that THS4141IDR is sourced from the original manufacturer or authorized distributors?
All THS4141IDR 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 THS4141IDR meets industry standards.
7.What is the process for return or replacement of THS4141IDR?
All THS4141IDR units undergo pre-shipment inspection (PSI). If there is an issue with THS4141IDR, 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 THS4141IDR part is unused and in its original packaging.
Return procedure for THS4141IDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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