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Texas Instruments THS4141CDGNR
- Part No.:
- THS4141CDGNR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
THS4141CDGNR.pdf
- Description:
- IC OPAMP DIFF 1 CIRCUIT 8HVSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,796
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Product details
Overview
THS4141CDGNR from Texas Instruments is a high-speed fully differential amplifier optimized for single-ended-to-differential conversion and precision ADC driving. 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 noise, and operates from ±2.5 V to ±15 V dual supply or 5 V single supply. It is used in high-resolution data acquisition systems where balanced signal integrity and low distortion are critical.
For engineers reviewing the THS4141CDGNR datasheet, THS4141CDGNR pinout, THS4141CDGNR application, or THS4141CDGNR equivalent, key selection criteria include differential output swing (±12.9 V at ±15 V), VOCM-controlled common-mode level setting, MSOP PowerPAD™ thermal performance, and compatibility with 16-bit+ SAR and sigma-delta ADCs requiring >90 dB SFDR.
Technical Context
The THS4141CDGNR implements a true fully differential signal path-differential input to differential output-with symmetrical internal topology that inherently rejects common-mode noise and cancels second-harmonic distortion. Its BiComI bipolar process enables high slew rate and wide bandwidth while maintaining low input-referred noise.
Unlike standard op-amps, it features a dedicated VOCM pin to set output common-mode voltage independently of input, enabling seamless interfacing with ADC reference voltages. It lacks shutdown functionality (unlike THS4140), confirming its role as a continuous-operation, high-fidelity signal chain component.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| –3 dB Bandwidth | 160 MHz at ±15 V supply - supports wideband signal conditioning up to ~80 MHz Nyquist for high-speed ADCs |
| Slew Rate | 450 V/µs - enables clean reproduction of fast transient signals without slewing-induced distortion |
| THD @ 1 MHz | –79 dB (differential in/out) - meets dynamic range requirements for 16-bit+ data converters |
| Input Noise | 6.5 nV/√Hz at 10 kHz - preserves SNR in low-level analog front-ends |
| Output Swing | ±12.9 V at ±15 V supply - delivers full-scale differential drive into 800 Ω loads |
| CMRR | 84 dB (typical) - ensures rejection of board-level noise coupling into differential outputs |
| Supply Range | ±2.5 V to ±15 V dual or 5 V single - supports legacy industrial and modern low-voltage systems |
Pinout & Package
THS4141CDGNR is housed in an 8-pin MSOP PowerPAD™ package (DGN), featuring an exposed thermal pad on the underside for enhanced heat dissipation. The package is RoHS-compliant and designed for surface-mount assembly with soldered thermal pad connection to PCB copper pour.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: VIN− | Inverting input | Differential input node; requires matched trace length and impedance to VIN+ for CMRR optimization |
| 2: VOCM | Output common-mode control | DC bias level setter for both outputs; connects directly to ADC reference or mid-rail bypassed with 0.1 µF |
| 3: VCC+ | Positive supply | Must be decoupled with 0.1 µF ceramic + 6.8 µF tantalum close to pin; shared supplies require individual ceramics |
| 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; symmetry with VIN− is critical for harmonic cancellation |
| 6: NC | No connect | Internally unused; must remain unconnected per datasheet - not tied to ground or supply |
| 7: VCC− | Negative supply | Ground reference for single-supply operation; decoupling identical to VCC+ |
| 8: VOUT− | Negative differential output | Delivers non-inverted-phase signal relative to VOUT+; completes balanced drive to ADC |
Key Features
| Feature | Design Value |
|---|---|
| Fully differential I/O architecture | Enables true differential signaling end-to-end, doubling dynamic range versus single-ended amplifiers for same supply rails |
| VOCM-controlled output bias | Allows precise alignment of output common-mode voltage to ADC reference (e.g., AVDD/2), eliminating level-shifting circuitry |
| PowerPAD™ thermal package | Reduces θJA to 58.4°C/W - sustains 1.71 W power dissipation at 25°C ambient, critical for continuous high-output drive |
| High PSRR & CMRR | 70 dB PSRR and 84 dB CMRR minimize sensitivity to supply ripple and board noise, preserving signal fidelity in noisy environments |
| Optimized for ADC driving | Specified distortion and settling performance (96 ns to 0.1%) meet timing and linearity requirements of 16-bit+ SAR and sigma-delta converters |
Applications
| High-Speed Data Acquisition | Communications Baseband Processing |
|---|---|
Use Scenario: Driving the differential inputs of a 16-bit, 1 MSPS SAR ADC in automated test equipment. IC Role / Device Role / Timing Role: Single-ended sensor signal conditioner and differential transmitter; sets VOCM to match ADC's internal reference voltage. Use Value: Enables full 93.5 dB SNR utilization by delivering low-noise, low-distortion differential drive with <96 ns settling to 0.1%. | Use Scenario: Conditioning baseband I/Q signals before digitization in LTE femtocell receivers. IC Role / Device Role / Timing Role: Differential line driver with programmable common-mode offset; interfaces between FPGA DAC outputs and RF ADC front-end. Use Value: Maintains >90 dB SFDR across 20 MHz bandwidth due to balanced output structure rejecting even-order harmonics. |
| Medical Imaging Signal Chain | Industrial Precision Sensor Interface |
Use Scenario: Amplifying low-amplitude ultrasound echo signals prior to digitization in portable imaging systems. IC Role / Device Role / Timing Role: Low-noise, high-bandwidth differential preamplifier; VOCM biased to match ADC's 2.5 V reference. Use Value: 6.5 nV/√Hz input noise and –79 dB THD preserve weak signal integrity over 1–10 MHz diagnostic bandwidth. | Use Scenario: Isolating and scaling bridge sensor outputs (e.g., load cells) for 24-bit delta-sigma ADCs in weigh scales. IC Role / Device Role / Timing Role: Precision differential driver with rail-to-rail output swing; rejects EMI via common-mode rejection. Use Value: 84 dB CMRR suppresses 50/60 Hz mains interference; ±12.9 V swing maximizes ADC utilization under ±15 V supply. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fully differential amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| THS4131CDGNR | 150 MHz BW, 51 V/µs SR, 1.3 nV/√Hz noise - lower noise but reduced bandwidth vs THS4141CDGNR | Better for ultra-low-noise, moderate-bandwidth (<50 MHz) precision measurement | Select THS4131CDGNR when input noise dominates system SNR and bandwidth ≤100 MHz suffices |
| THS4561IRGET | 800 MHz BW, 3500 V/µs SR, 2.3 nV/√Hz - higher speed, higher power, QFN-24 package | Suited for >200 MSPS ADCs and RF sampling applications | Choose THS4561IRGET only when >300 MHz small-signal BW is required and thermal/power budget allows |
Compared with THS4141CDGNR, THS4131CDGNR trades 10 MHz bandwidth for 5× lower input noise, making it preferable in DC-critical instrumentation; THS4561IRGET offers 5× bandwidth but demands 3× more supply current and complex layout - neither is pin-compatible, and both require redesign of feedback network and thermal management.
Availability
THS4141CDGNR is available at Aetrix Electronics and suitable for high-speed data acquisition, medical imaging signal chains, and industrial precision sensor interfaces requiring stable component supply, long-term manufacturability, and consistent parametric performance across temperature.
Supply support for THS4141CDGNR 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 amplifiers and data converter interface solutions.
The THS414x family was designed specifically for high-fidelity differential signal conditioning in precision data acquisition systems, targeting applications demanding wide bandwidth, ultra-low distortion, and robust common-mode rejection.
FAQ
What is the function of the VOCM pin on the THS4141CDGNR?
The VOCM pin on the THS4141CDGNR sets the common-mode voltage level of both differential outputs (VOUT+ and VOUT−). It accepts an external DC voltage-typically tied to an ADC's reference (e.g., AVDD/2) or mid-rail-and directly biases the output stage without affecting gain or signal path. This enables seamless interfacing with differential-input ADCs while eliminating level-shifting components. The THS4141CDGNR's VOCM pin has high bandwidth and should be bypassed with a 0.1 µF capacitor to ground for noise suppression.
Does the THS4141CDGNR support single-supply operation?
Yes, the THS4141CDGNR supports single-supply operation from 5 V. In this mode, VOCM defaults to VCC/2 (2.5 V), establishing the output common-mode level. Input common-mode voltage must remain within the specified range (–4 V to 4.5 V referenced to VCC−), and output swing is limited to 1.2–3.8 V (single-ended) or ±1.9 V differential. Proper decoupling and VOCM bypassing remain essential for stability and noise performance in single-supply configurations.
How does the THS4141CDGNR differ from the THS4140CDGNR?
The THS4141CDGNR omits the PD (power-down) pin present on the THS4140CDGNR-pin 6 is designated NC (no connect) instead of PD. Consequently, THS4141CDGNR lacks shutdown capability and draws full quiescent current (16 mA typical at ±5 V) continuously. All other electrical specifications-including bandwidth, slew rate, distortion, and noise-are identical between the two devices. THS4141CDGNR is selected when always-on operation is required and power gating is unnecessary.
What thermal design considerations apply to the THS4141CDGNR in the DGN package?
The THS4141CDGNR uses an MSOP PowerPAD™ (DGN) package with an exposed thermal pad on the underside. For reliable operation above 100 mW dissipation, the thermal pad must be soldered to a minimum 100 mm² copper pour connected to internal/external ground planes via ≥4 thermal vias (0.3 mm diameter). This achieves the rated θJA of 58.4°C/W. Without proper thermal pad connection, junction temperature may exceed 125°C, causing distortion increase and long-term reliability degradation. TI technical briefs SLMA002 and SLMA004 provide layout guidelines.
Can the THS4141CDGNR drive capacitive loads directly?
No-capacitive loads >10 pF directly at the THS4141CDGNR outputs risk instability due to phase margin reduction. For loads exceeding 10 pF (e.g., ADC input capacitance, long traces), a series resistor (20–50 Ω) must be placed immediately at each output pin (VOUT+ and VOUT−) before connecting to the load. This isolates the amplifier's output stage from capacitive reactance. In 50 Ω systems, 50 Ω series resistors also provide source termination. Layout must keep these resistors within 2 mm of the output pins to maintain effectiveness.
THS4141CDGNR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- 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:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-HVSSOP
THS4141CDGNR FAQ
1.How can I place an order for THS4141CDGNR through Aetrix?
Please submit a Request for Quotation (RFQ) for THS4141CDGNR 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 THS4141CDGNR reliable?
The price and inventory of THS4141CDGNR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for THS4141CDGNR is usually 5 days.
3.What payment methods are accepted for THS4141CDGNR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for THS4141CDGNR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for THS4141CDGNR?
THS4141CDGNR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your THS4141CDGNR 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 THS4141CDGNR?
For technical support, including THS4141CDGNR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your THS4141CDGNR requirements.
6.How does Aetrix verify that THS4141CDGNR is sourced from the original manufacturer or authorized distributors?
All THS4141CDGNR 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 THS4141CDGNR meets industry standards.
7.What is the process for return or replacement of THS4141CDGNR?
All THS4141CDGNR units undergo pre-shipment inspection (PSI). If there is an issue with THS4141CDGNR, 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 THS4141CDGNR part is unused and in its original packaging.
Return procedure for THS4141CDGNR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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