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Texas Instruments THS4141CDGKG4
- Part No.:
- THS4141CDGKG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
THS4141CDGKG4.pdf
- Description:
- IC OPAMP DIFF 1 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,935
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Product details
Overview
THS4141CDGKG4 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 THS4141CDGKG4 datasheet, THS4141CDGKG4 pinout, THS4141CDGKG4 application, or THS4141CDGKG4 equivalent, key selection criteria include differential output swing (±12.9 V at ±15 V), VOCM-controlled common-mode level setting, MSOP-8 PowerPAD™ thermal performance, and compatibility with high-resolution SAR and pipeline ADCs requiring low THD and wide bandwidth.
Technical Context
The THS4141CDGKG4 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 and intrinsic cancellation of even-order harmonics, directly improving SFDR and dynamic range in ADC interfaces.
It features an internal VOCM pin that sets the DC common-mode level of both outputs independently of gain configuration, supporting single-supply operation with mid-rail default (VCC/2) and external biasing via low-impedance source. Unlike the THS4140, it lacks a shutdown (PD) pin, confirming fixed-operation design without power-down capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| –3 dB Bandwidth | 160 MHz at ±15 V supply - supports >100 MSPS ADC sampling with minimal amplitude roll-off |
| Slew Rate | 450 V/µs - enables clean reproduction of fast transient signals without slewing-induced distortion |
| THD @ 1 MHz | –79 dB (differential in/out, VO = 2 VPP) - meets SNR requirements for 16-bit+ data converters |
| Input Voltage Noise | 6.5 nV/√Hz at 10 kHz - contributes <1 LSB error in 16-bit systems with typical gain and bandwidth |
| Common-Mode Input Range | –4 V to +4.5 V at ±5 V supply - accommodates rail-to-rail input signals when VOCM is set appropriately |
| Output Swing | ±12.9 V at ±15 V supply into 800 Ω - provides full-scale drive for differential ADC inputs without clipping |
| Supply Range | ±2.5 V to ±15 V dual or 5 V single - enables flexible integration in mixed-voltage industrial and test equipment |
Pinout & Package
The THS4141CDGKG4 is housed in an 8-pin MSOP PowerPAD™ package (DGK), featuring an exposed thermal pad on the underside for enhanced heat dissipation. The PowerPAD must be soldered to a thermally conductive PCB copper plane to maintain junction temperature ≤125°C under continuous operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: VIN− | Inverting input | Differential input node; requires matched trace length and impedance to VIN+ for optimal 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 decoupling network (6.8 µF tantalum || 0.1 µF ceramic) within 2.54 mm |
| 4: VOUT+ | Positive differential output | Drives one leg of differential ADC input; series 20 Ω resistor recommended for >10 pF capacitive loads |
| 5: VIN+ | Non-inverting input | Differential input node; symmetry with VIN− critical for second-harmonic cancellation |
| 6: NC | No connect | Internally unused; must remain unconnected per datasheet - not tied to ground or supply |
| 7: VCC− | Negative supply | Return path for dual supply; decouple identically to VCC+ |
| 8: VOUT− | Negative differential output | Complementary output to VOUT+; equal magnitude, opposite polarity - enables 2× dynamic range vs. single-ended |
Key Features
| Feature | Design Value |
|---|---|
| Fully differential I/O architecture | Enables intrinsic rejection of common-mode noise on both input and output paths, improving system-level EMI immunity |
| VOCM-controlled output common-mode level | Allows precise alignment of differential output DC offset to ADC reference voltage (e.g., Vref), eliminating level-shifting circuitry |
| High slew rate + wide bandwidth | Supports accurate amplification of fast-rising pulses and wideband IF signals up to ~80 MHz fundamental content |
| Low input voltage noise | Minimizes added noise floor in front-end signal chains, preserving ENOB in high-resolution data acquisition systems |
| PowerPAD™ thermal package | Reduces θJA to 260°C/W (DGK), enabling reliable 1.7 W dissipation at TA = 25°C without external heatsink |
Applications
| High-Speed Data Acquisition | Differential Communication Interface |
|---|---|
Use Scenario: Driving the differential input of a 16-bit, 100 MSPS pipeline ADC in automated test equipment. IC Role / Device Role / Timing Role: ADC driver with gain = 1, configured for single-ended input to differential output conversion using VOCM referenced to ADC Vref. Use Value: Delivers –79 dB THD at 1 MHz and 160 MHz bandwidth, ensuring >15.5 ENOB and preventing aliasing in wideband capture. | Use Scenario: Transmitting balanced analog signals across noisy industrial backplanes between FPGA-based signal generators and remote sensor nodes. IC Role / Device Role / Timing Role: Differential transmitter with VOCM set to mid-supply, providing robust common-mode noise immunity over 1–10 m traces. Use Value: Balanced outputs reject coupled EMI, while 450 V/µs slew rate preserves edge integrity in pulse-width modulated analog links. |
| Antialiasing Filter Driver | Single-Supply Signal Conditioning |
Use Scenario: Buffering the output of a 5th-order active antialiasing filter before feeding into a 12-bit SAR ADC in medical imaging front-end. IC Role / Device Role / Timing Role: High-fidelity buffer stage with unity gain, minimizing phase shift and group delay variation across 0–20 MHz passband. Use Value: 6.5 nV/√Hz noise and –85 dB second-harmonic distortion preserve weak signal fidelity and prevent harmonic folding into baseband. | Use Scenario: Amplifying sensor outputs (e.g., bridge-based strain gauges) in battery-powered portable instrumentation operating from 5 V only. IC Role / Device Role / Timing Role: Single-supply differential amplifier with VOCM = 2.5 V, converting unipolar sensor signals to rail-symmetric differential outputs. Use Value: Eliminates need for external level shifters or dual supplies while maintaining >14-bit linearity and 150 MHz small-signal bandwidth. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fully differential amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| THS4131CDGN | 150 MHz BW, 51 V/µs SR, 1.3 nV/√Hz noise, same 8-pin MSOP package | Better noise performance but lower slew rate; suited for lower-frequency, ultra-low-noise precision ADC drivers | Select THS4131CDGN when noise dominates over speed; THS4141CDGKG4 preferred for >50 MSPS or wideband IF applications. |
| THS4561IRGET | 1.8 GHz GBW, 4000 V/µs SR, 1.6 nV/√Hz, 16-pin QFN with enable pin | Higher speed and integrated enable, but requires layout redesign and tighter decoupling; no VOCM pin - uses internal reference | Choose THS4561IRGET for RF sampling or JESD204B interface drivers; THS4141CDGKG4 remains optimal for cost-sensitive, thermally constrained industrial ADC front-ends. |
Compared with THS4131CDGN and THS4561IRGET, the THS4141CDGKG4 offers the best balance of bandwidth, slew rate, thermal efficiency in MSOP PowerPAD™, and VOCM flexibility for general-purpose high-speed differential ADC driving - especially where PCB area, BOM count, and thermal management are constrained.
Availability
THS4141CDGKG4 is available at Aetrix Electronics and suitable for high-speed data acquisition, industrial sensor signal conditioning, medical imaging front-ends, and test equipment requiring stable component supply and long-term manufacturability.
Supply support for THS4141CDGKG4 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 high-performance signal chain solutions with broad industrial, automotive, and communications reach.
The THS414x family was engineered specifically for high-fidelity differential signal routing in precision data converter interfaces - emphasizing bandwidth, low distortion, VOCM control, and thermal robustness in compact packages.
FAQ
What is the function of the VOCM pin on the THS4141CDGKG4?
The VOCM pin on the THS4141CDGKG4 sets the DC common-mode voltage level of both differential outputs (VOUT+ and VOUT−). When left unconnected, it defaults to mid-supply (e.g., 2.5 V on 5 V single supply); externally biasing it to match an ADC's reference voltage (e.g., Vref) eliminates level-shifting components. A 0.1 µF bypass capacitor is required for stability and noise suppression, as specified in the THS4141CDGKG4 datasheet.
Does the THS4141CDGKG4 support power-down mode?
No, the THS4141CDGKG4 does not support power-down mode. Unlike the THS4140, which includes a dedicated PD (power-down) pin, the THS4141CDGKG4 has a no-connect (NC) pin at position 6 and lacks internal shutdown circuitry. It operates continuously when powered, making it suitable for always-on signal paths where deterministic latency and consistent biasing are critical - confirmed by the THS4141CDGKG4 pinout and functional description.
What is the maximum differential output voltage swing for THS4141CDGKG4 at ±15 V supply?
At ±15 V supply and TA = 25°C, the THS4141CDGKG4 delivers a differential output voltage swing of ±12.9 V into an 800 Ω load, as specified in the Electrical Characteristics table. This corresponds to a 25.8 VPP differential signal, enabling full utilization of high-voltage differential ADC inputs without clipping - a key specification verified in the THS4141CDGKG4 datasheet under "Output Voltage Swing".
Can THS4141CDGKG4 drive capacitive loads directly?
No, the THS4141CDGKG4 should not drive capacitive loads >10 pF directly due to reduced phase margin causing ringing or oscillation. Per the THS4141CDGKG4 application notes, a minimum 20 Ω series resistor must be placed between each output (VOUT+, VOUT−) and the load. For 50 Ω transmission lines, a 50 Ω series resistor provides both isolation and impedance matching - a requirement explicitly stated in the "Driving a Capacitive Load" section of the THS4141CDGKG4 datasheet.
How does THS4141CDGKG4 improve dynamic range compared to single-ended amplifiers?
The THS4141CDGKG4 improves dynamic range by delivering two complementary outputs (VOUT+, VOUT−) of equal amplitude and opposite polarity. This allows a 2 VPP differential signal to be split into two 1 VPP single-ended signals - effectively doubling usable peak-to-peak swing without exceeding ADC input limits. Verified in the THS4141CDGKG4 Principles of Operation section, this architecture enables feeding 2 VPP signals into 1 VPP-differential ADCs, increasing effective resolution by up to 1 bit.
THS4141CDGKG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- 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
THS4141CDGKG4 FAQ
1.How can I place an order for THS4141CDGKG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for THS4141CDGKG4 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 THS4141CDGKG4 reliable?
The price and inventory of THS4141CDGKG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for THS4141CDGKG4 is usually 5 days.
3.What payment methods are accepted for THS4141CDGKG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for THS4141CDGKG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for THS4141CDGKG4?
THS4141CDGKG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your THS4141CDGKG4 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 THS4141CDGKG4?
For technical support, including THS4141CDGKG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your THS4141CDGKG4 requirements.
6.How does Aetrix verify that THS4141CDGKG4 is sourced from the original manufacturer or authorized distributors?
All THS4141CDGKG4 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 THS4141CDGKG4 meets industry standards.
7.What is the process for return or replacement of THS4141CDGKG4?
All THS4141CDGKG4 units undergo pre-shipment inspection (PSI). If there is an issue with THS4141CDGKG4, 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 THS4141CDGKG4 part is unused and in its original packaging.
Return procedure for THS4141CDGKG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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