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Texas Instruments THS4141CDGN
- Part No.:
- THS4141CDGN
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
THS4141CDGN.pdf
- Description:
- IC OPAMP DIFF 1 CIRCUIT 8HVSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,900
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Product details
Overview
THS4141CDGN 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-referred voltage noise, and operates from ±2.5 V to ±15 V dual supply or 5 V single supply - used in high-fidelity data acquisition systems requiring low distortion and balanced signal integrity.
For engineers reviewing the THS4141CDGN datasheet, THS4141CDGN pinout, THS4141CDGN application, or THS4141CDGN 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 in instrumentation and communications infrastructure.
Technical Context
The THS4141CDGN implements a true fully differential signal path-differential input to differential output-using TI's BiComI complementary bipolar process. This architecture enables inherent common-mode noise rejection, cancellation of even-order harmonics, and improved PSRR over conventional op-amps.
Unlike the THS4140, the THS4141 omits the shutdown (PD) pin, resulting in a fixed 8-pin MSOP PowerPAD™ (DGN) package with VIN−, VIN+, VCC+, VOUT+, VCC−, VOUT−, VOCM, and NC terminals. Its VOCM pin sets output common-mode voltage independently and supports midrail biasing under single-supply operation.
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, VO = 2 VPP) - meets dynamic range requirements for 16-bit+ data converters |
| Input Voltage Noise | 6.5 nV/√Hz at 10 kHz - preserves SNR in low-level analog front-ends before digitization |
| Supply Range | ±2.5 V to ±15 V dual or 5 V single supply - allows flexible integration in mixed-voltage systems |
| Output Swing | ±12.9 V (±15 V supply, RL = 800 Ω) - delivers full-scale differential drive into typical ADC inputs |
| CMRR | 84 dB (typical, full temperature range) - rejects board-level noise coupling equally on both inputs |
Pinout & Package
The THS4141CDGN uses an 8-pin MSOP PowerPAD™ (DGN) package with exposed thermal pad on underside - requires soldering to PCB copper pour for thermal management per TI SLMA002/SLMA004 guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN− | Inverting input | Differential input node; matched impedance critical for CMRR and harmonic cancellation |
| VIN+ | Non-inverting input | Differential input node; symmetry with VIN− enables balanced signal processing |
| VCC+ | Positive supply rail | Connects to +V supply; decoupling capacitor required within 2.54 mm for stability |
| VOUT+ | Positive differential output | Delivers inverted-phase signal relative to VOUT−; forms differential pair with VOUT− |
| VCC− | Negative supply rail | Connects to −V supply (or GND in single-supply); same decoupling requirement as VCC+ |
| VOUT− | Negative differential output | Delivers non-inverted-phase signal relative to VOUT+; completes differential output pair |
| VOCM | Output common-mode control | Sets DC offset of both outputs; bypass with 0.1 µF capacitor to suppress noise injection |
| NC | No connect | Internally unused terminal; must remain unconnected per datasheet |
Key Features
| Feature | Design Value |
|---|---|
| Fully differential I/O architecture | Enables true differential signaling end-to-end, rejecting common-mode interference at input, output, and power rails |
| 160 MHz small-signal bandwidth | Supports >80 MHz analog input bandwidth for 16-bit+ sampling systems without gain peaking or phase loss |
| –79 dB third-harmonic distortion @ 1 MHz | Meets SFDR >90 dBc requirements for high-resolution ADC drivers in baseband and IF applications |
| MSOP PowerPAD™ thermal package | θJA = 58.4°C/W enables 1.71 W power dissipation at 25°C ambient - critical for sustained high-output-drive operation |
| VOCM-controlled output bias | Allows precise alignment of differential output common-mode level to ADC reference (e.g., VREF/2), eliminating level-shifting circuitry |
Applications
| High-Speed Data Acquisition | Digital Communications Transceiver |
|---|---|
Use Scenario: Driving 16-bit SAR ADCs in automated test equipment with 1–10 MSPS sampling rates and ±10 V input ranges. IC Role / Device Role / Timing Role: Single-ended-to-differential converter and antialias filter driver; provides matched gain, phase, and offset between VOUT+ and VOUT−. Use Value: Enables full utilization of ADC ENOB by maintaining <–79 dB THD and >84 dB CMRR across temperature, reducing calibration overhead. | Use Scenario: Transmit path conditioning in broadband wireless infrastructure (e.g., LTE remote radio heads) with IF frequencies up to 70 MHz. IC Role / Device Role / Timing Role: Differential transmitter driver interfacing FPGA DAC outputs to balanced RF mixer inputs. Use Value: Delivers 160 MHz bandwidth and 450 V/µs slew rate to preserve modulation fidelity (EVM <1.5%) without external reconstruction filtering. |
| Medical Imaging Front-End | Industrial Precision Sensor Interface |
Use Scenario: Signal conditioning for ultrasound receive beamformers where low-noise, low-distortion amplification of weak echo signals is critical. IC Role / Device Role / Timing Role: Low-noise differential preamplifier stage preceding variable-gain amplifier and ADC; VOCM set to match downstream ADC common-mode. Use Value: 6.5 nV/√Hz input noise and –79 dB THD ensure >76 dB SNR in 1–15 MHz bandwidth, directly improving image resolution. | Use Scenario: Isolated bridge sensor interface (e.g., load cell, strain gauge) feeding 24-bit delta-sigma ADC in programmable logic controllers. IC Role / Device Role / Timing Role: Differential output driver converting single-ended bridge output to noise-immune differential format for long PCB traces. Use Value: Balanced outputs reject EMI pickup on routing to ADC, while 84 dB CMRR maintains accuracy despite ground shifts up to ±100 mV. |
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 - lower distortion but reduced bandwidth vs THS4141CDGN | Better suited for ultra-low-noise, moderate-bandwidth (<50 MHz) precision measurement | Select THS4131CDGN when noise floor dominates over speed; THS4141CDGN preferred for >80 MHz signal chains |
| THS4561IRGET | 1.8 GHz GBW, rail-to-rail output, 2.3 nV/√Hz - higher speed, lower noise, but requires external VOCM resistor network | Optimized for high-frequency direct-RF sampling and JESD204B interface drivers | Choose THS4561IRGET for >200 MHz applications; THS4141CDGN remains optimal for cost-sensitive, ±15 V industrial DAQ |
Compared with THS4131CDGN and THS4561IRGET, the THS4141CDGN offers the best balance of bandwidth (160 MHz), distortion (–79 dB THD), thermal efficiency (PowerPAD™), and ±15 V robustness - making it the preferred choice for industrial and test equipment requiring proven reliability at moderate RF frequencies.
Availability
THS4141CDGN is available at Aetrix Electronics and suitable for high-speed data acquisition, medical imaging front-ends, and industrial sensor interfaces requiring stable component supply across extended temperature ranges (–40°C to 85°C).
Supply support for THS4141CDGN 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.
The THS4141CDGN belongs to TI's High-Speed Fully Differential I/O Amplifier product line, designed specifically for precision differential signal conditioning in data converter interfaces, communications infrastructure, and instrumentation systems.
FAQ
What is the function of the VOCM pin on the THS4141CDGN?
The VOCM pin on the THS4141CDGN sets the common-mode DC voltage level of both differential outputs (VOUT+ and VOUT−). When left unconnected, it defaults to midrail (e.g., 2.5 V on 5 V supply); connecting an external voltage or ADC reference (with 0.1 µF bypass) precisely aligns output common-mode to downstream receiver requirements - a critical capability for interfacing with modern differential ADCs. This function is intrinsic to the THS4141CDGN's architecture and eliminates need for external level-shifting circuitry.
Does the THS4141CDGN support single-supply operation?
Yes, the THS4141CDGN supports single-supply operation from 5 V. In this mode, VOCM defaults to VCC/2 (2.5 V), enabling direct connection to ADCs with midrail-referenced differential inputs. Input common-mode range extends from –4 V to 4.5 V, allowing signal handling beyond rail limits when biased appropriately. The THS4141CDGN maintains –79 dB THD and 150 MHz bandwidth under 5 V operation - confirmed in TI SLOS320F datasheet Section 6.5.
How does the THS4141CDGN differ from the THS4140CDGN?
The THS4141CDGN lacks the shutdown (PD) pin present on the THS4140CDGN, resulting in a dedicated 8-pin configuration with NC instead of PD. This makes the THS4141CDGN a fixed-operating, non-power-down variant - ideal for always-on signal paths where quiescent current stability and absence of wake-up transients are prioritized. All AC/DC specifications (bandwidth, THD, noise, etc.) are identical between the two parts per TI SLOS320F Rev. January 2006.
What thermal design guidance applies to the THS4141CDGN's PowerPAD™ package?
The THS4141CDGN's DGN package features an exposed thermal pad requiring solder connection to a PCB copper pour for effective heat dissipation. TI specifies θJA = 58.4°C/W and recommends following SLMA002/SLMA004 guidelines: use ≥4 thermal vias (0.3 mm diameter) under the pad, connect to inner-layer ground plane, and maintain ≥1 cm² copper area. Failure to thermally anchor the pad risks junction temperatures exceeding 125°C - degrading THD and long-term reliability. This thermal requirement is unique to the THS4141CDGN's PowerPAD™ implementation.
Can the THS4141CDGN drive capacitive loads directly?
No - the THS4141CDGN is internally compensated for maximum bandwidth and slew rate, making it sensitive to capacitive loading. For loads >10 pF, TI mandates a series isolation resistor (≥20 Ω) between amplifier output and capacitance, as shown in Figure 25 of SLOS320F. Omitting this resistor causes high-frequency ringing or oscillation due to phase margin loss. This behavior is documented for the THS4141CDGN specifically and differs from unity-gain-stable general-purpose op-amps.
THS4141CDGN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- 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:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-HVSSOP
THS4141CDGN FAQ
1.How can I place an order for THS4141CDGN through Aetrix?
Please submit a Request for Quotation (RFQ) for THS4141CDGN 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 THS4141CDGN reliable?
The price and inventory of THS4141CDGN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for THS4141CDGN is usually 5 days.
3.What payment methods are accepted for THS4141CDGN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for THS4141CDGN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for THS4141CDGN?
THS4141CDGN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your THS4141CDGN 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 THS4141CDGN?
For technical support, including THS4141CDGN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your THS4141CDGN requirements.
6.How does Aetrix verify that THS4141CDGN is sourced from the original manufacturer or authorized distributors?
All THS4141CDGN 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 THS4141CDGN meets industry standards.
7.What is the process for return or replacement of THS4141CDGN?
All THS4141CDGN units undergo pre-shipment inspection (PSI). If there is an issue with THS4141CDGN, 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 THS4141CDGN part is unused and in its original packaging.
Return procedure for THS4141CDGN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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