My Inquiry
My Account
Texas Instruments THS4141CDGKR
- Part No.:
- THS4141CDGKR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
THS4141CDGKR.pdf
- Description:
- IC OPAMP DIFF 1 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,278
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
THS4141CDGKR from Texas Instruments is a high-speed fully differential amplifier optimized for ADC driver, antialiasing, and differential signal transmission 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 THS4141CDGKR datasheet, THS4141CDGKR pinout, THS4141CDGKR application, or THS4141CDGKR equivalent, this device is selected for precision differential signal conditioning in high-resolution data acquisition systems where common-mode noise rejection, low distortion, and wide dynamic range are critical design requirements.
Technical Context
The THS4141CDGKR implements a true fully differential signal path-differential input to differential output-enabling balanced noise rejection and cancellation of even-order harmonics. Its internal architecture supports VOCM control for precise output common-mode level setting, with high bandwidth up to the amplifier's operating range.
Unlike standard op-amps or differential receivers, it requires matched external feedback resistors to preserve CMRR and PSRR; resistor mismatch directly degrades second-harmonic suppression and common-mode rejection. The device lacks shutdown functionality (unlike THS4140), confirming its role as a performance-optimized, always-active differential driver.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| –3 dB Bandwidth | 160 MHz at ±15 V supply - enables baseband signal conditioning up to ~80 MHz Nyquist for high-speed ADCs |
| Slew Rate | 450 V/µs - supports fast transient response without slewing-induced distortion in 12–16-bit sampling systems |
| THD @ 1 MHz | –79 dB (differential in/out, 2 VPP) - meets SFDR > 75 dB requirement for 14-bit+ ADC drivers |
| Input Voltage Noise | 6.5 nV/√Hz @ 10 kHz - contributes < 0.5 LSB noise floor in 16-bit, 1 MSPS systems with 10 kΩ source impedance |
| CMRR | 84 dB (typ, full temp range) - rejects >99.98% of coupled power-supply or ground noise in mixed-signal PCB layouts |
| Supply Range | ±2.5 V to ±15 V dual or 5 V single - supports legacy industrial rails and modern low-voltage data converters |
| Output Swing | ±12.9 V (±15 V supply, RL = 800 Ω) - delivers full-scale differential swing to match 2.5 Vref or 5 Vref ADC inputs |
Pinout & Package
THS4141CDGKR is housed in an 8-pin MSOP PowerPAD™ package (DGK), featuring an exposed thermal pad on the underside for enhanced thermal dissipation. The package is RoHS-compliant and designed for surface-mount reflow assembly with controlled thermal profile.
| 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 outputs; bypass with 0.1 µF capacitor to suppress noise coupling into output common mode |
| 3: VCC+ | Positive supply rail | Must be decoupled with 0.1 µF ceramic + 6.8 µF tantalum; shared decoupling not recommended for multi-amplifier layouts |
| 4: VOUT+ | Positive differential output | Drives one leg of differential ADC input; series 20 Ω resistor required for >10 pF capacitive loads to prevent ringing |
| 5: VIN+ | Non-inverting input | Differential input node; symmetry with VIN− is essential for harmonic cancellation and PSRR optimization |
| 6: NC | No connect | Internally unused; must remain unconnected and unstubbed to avoid parasitic coupling |
| 7: VCC− | Negative supply rail | Ground reference for single-supply operation; decoupling identical to VCC+ required |
| 8: VOUT− | Negative differential output | Complementary output to VOUT+; equal amplitude and opposite polarity enable 2× dynamic range vs. single-ended drivers |
Key Features
| Feature | Design Value |
|---|---|
| Fully differential I/O architecture | Enables true differential signaling end-to-end, rejecting common-mode noise at input, output, and supply nodes |
| VOCM-controlled output level shifting | Allows precise alignment of differential output common-mode voltage to ADC reference (e.g., AVDD/2 or VREF) |
| High slew rate + wide bandwidth | Supports clean amplification of fast-rising pulses and wideband IF signals without transient distortion |
| Low input voltage noise density | Minimizes added noise in front-end gain stages, preserving SNR in high-resolution (≥16-bit) data acquisition |
| Matched internal transistor pairs | Ensures inherent symmetry for second-harmonic cancellation and stable closed-loop gain accuracy |
Applications
| High-Speed Data Acquisition Systems | Differential ADC Driver |
|---|---|
Use Scenario: Conditioning analog sensor outputs (e.g., strain gauge bridges, current shunts) before digitization in automated test equipment. IC Role / Device Role / Timing Role: Single-ended to differential conversion and gain stage with precise VOCM alignment to ADC reference. Use Value: Enables 16-bit effective resolution by suppressing ground bounce and supply ripple that would otherwise corrupt LSBs. | Use Scenario: Driving the differential input of a 14-bit, 100 MSPS pipeline ADC in communications infrastructure. IC Role / Device Role / Timing Role: Final gain and level-shifting stage ensuring full-scale differential swing matches ADC input range while maintaining phase coherence. Use Value: Delivers –79 dB THD at 1 MHz, meeting SFDR requirements for LTE/5G baseband signal chains without post-processing correction. |
| Antialiasing Filter Interface | Instrumentation Signal Chain |
Use Scenario: Output stage of active antialiasing filter preceding high-speed ADC in medical imaging (e.g., ultrasound beamforming). IC Role / Device Role / Timing Role: Low-noise, high-slew buffer isolating filter output from ADC input capacitance while preserving passband flatness. Use Value: 450 V/µs slew rate prevents step-response overshoot in 20 MHz cutoff filters, maintaining time-domain fidelity. | Use Scenario: Front-end signal conditioning for precision weigh scales using low-drift instrumentation amplifiers followed by THS4141CDGKR. IC Role / Device Role / Timing Role: Differential output driver translating single-ended amplified sensor signal to noise-immune differential bus. Use Value: 84 dB CMRR rejects EMI from nearby switching power supplies, reducing calibration drift in Class III legal-for-trade systems. |
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. THS4141CDGKR | Better for low-frequency, ultra-low-noise precision measurement; less suitable for >50 MHz IF sampling | Select THS4131CDGNR when input-referred noise dominates system SNR budget and bandwidth ≤100 MHz suffices. |
| THS4561IRGET | 1.8 GHz GBW, 1000 V/µs SR, 2.3 nV/√Hz - higher speed, rail-to-rail output, no VOCM pin | Requires external level-shifting for ADC interface; better for RF sampling, worse for precision DC-coupled systems | Select THS4561IRGET only when >500 MHz small-signal bandwidth is mandatory and VOCM control is implemented externally. |
Compared with THS4131CDGNR and THS4561IRGET, THS4141CDGKR uniquely balances 160 MHz bandwidth, –79 dB THD, and programmable VOCM in a thermally robust MSOP PowerPAD package-making it optimal for mid-bandwidth, DC-coupled, high-SFDR data acquisition where output common-mode alignment is non-negotiable.
Availability
THS4141CDGKR is available at Aetrix Electronics and suitable for high-speed data acquisition systems, precision instrumentation signal chains, antialiasing filter interfaces, and differential ADC driver applications requiring stable component supply across industrial temperature ranges.
Supply support for THS4141CDGKR 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 over 50 years of innovation in high-performance signal chain components.
The THS414x family was engineered specifically for high-fidelity differential signal conditioning in data converter interfaces-prioritizing distortion performance, common-mode rejection, and flexible supply operation over power efficiency or integration.
FAQ
What is the function of the VOCM pin on the THS4141CDGKR?
The VOCM pin on the THS4141CDGKR sets the common-mode DC voltage level of both differential outputs. When driven with a stable voltage (e.g., ADC reference or AVDD/2), it precisely centers the output swing, enabling seamless interfacing with differential-input ADCs. Leaving VOCM unconnected defaults it to midrail, but a 0.1 µF bypass capacitor is mandatory to suppress noise coupling into the output common mode.
Does the THS4141CDGKR support single-supply operation?
Yes, the THS4141CDGKR supports single-supply operation from 5 V. In this configuration, VOCM defaults to VCC/2 (2.5 V), allowing direct connection to the reference voltage of many 5 V ADCs. Input common-mode voltage must stay within –4 V to 4.5 V, and output swing is limited to 0.9 V to 4.1 V (RL = 800 Ω), requiring careful signal range planning.
How does the THS4141CDGKR differ from the THS4140 in pinout and functionality?
The THS4141CDGKR omits the PD (power-down) pin present on the THS4140; Pin 6 is NC instead of PD. This eliminates shutdown capability but improves consistency in always-on high-speed signal paths. Both share identical pinout numbering, gain structure, bandwidth, and noise specs-making THS4141CDGKR the preferred choice when power cycling is unnecessary and maximum signal integrity is prioritized.
Why is resistor matching critical when using the THS4141CDGKR?
Resistor matching is critical because the THS4141CDGKR's CMRR, PSRR, and second-harmonic distortion cancellation depend entirely on symmetrical feedback networks. A 1% mismatch in Rf or Rg degrades CMRR by >20 dB and increases second-harmonic distortion by 10–15 dB. TI recommends 0.1% thin-film resistors or matched arrays for designs targeting >80 dB SFDR.
What thermal considerations apply to the THS4141CDGKR in the DGK package?
The THS4141CDGKR in DGK package features an exposed thermal pad (PowerPAD™) requiring solder connection to a dedicated copper pour tied to internal ground or thermal plane. Without proper thermal pad attachment, junction temperature can exceed 125°C under 15 mA quiescent current, causing distortion rise and reliability risk. TI specifies θJC = 54.2°C/W and mandates ≥4 thermal vias under the pad for reliable operation above 70°C ambient.
THS4141CDGKR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm 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:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-VSSOP
THS4141CDGKR FAQ
1.How can I place an order for THS4141CDGKR through Aetrix?
Please submit a Request for Quotation (RFQ) for THS4141CDGKR 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 THS4141CDGKR reliable?
The price and inventory of THS4141CDGKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for THS4141CDGKR is usually 5 days.
3.What payment methods are accepted for THS4141CDGKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for THS4141CDGKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for THS4141CDGKR?
THS4141CDGKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your THS4141CDGKR 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 THS4141CDGKR?
For technical support, including THS4141CDGKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your THS4141CDGKR requirements.
6.How does Aetrix verify that THS4141CDGKR is sourced from the original manufacturer or authorized distributors?
All THS4141CDGKR 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 THS4141CDGKR meets industry standards.
7.What is the process for return or replacement of THS4141CDGKR?
All THS4141CDGKR units undergo pre-shipment inspection (PSI). If there is an issue with THS4141CDGKR, 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 THS4141CDGKR part is unused and in its original packaging.
Return procedure for THS4141CDGKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
THS4141CDGKR Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
