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Texas Instruments THS4042IDRG4
- Part No.:
- THS4042IDRG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
THS4042IDRG4.pdf
- Description:
- IC VOLTAGE FEEDBACK 2 CIRC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,287
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Product details
Overview
THS4042IDRG4 from Texas Instruments is a dual-channel, high-speed voltage-feedback operational amplifier designed for driving heavy capacitive loads in precision analog signal paths. It delivers 165 MHz small-signal bandwidth (CL = 0 pF), 400 V/µs slew rate, ±15 V supply operation, unity-gain stability, and drives up to 100 mA into 20 Ω - enabling use in video line drivers, ADC buffers, and high-fidelity signal conditioning.
For engineers reviewing the THS4042IDRG4 datasheet, THS4042IDRG4 pinout, THS4042IDRG4 application, or THS4042IDRG4 equivalent, key selection criteria include capacitive-load stability across 0–1000 pF, differential gain/phase error ≤0.01%/0.01° (NTSC, ±15 V), THD = −75 dBc at 1 MHz (150 Ω), and dual-channel crosstalk of −64 dB at 1 MHz - critical for multi-channel instrumentation and broadcast-grade video systems.
Technical Context
The THS4042IDRG4 employs a dielectrically isolated complementary bipolar process with GHz fT transistors, enabling high-speed voltage-feedback architecture with internal adaptive compensation for capacitive load stability. Its fully differential input stage supports rail-to-rail common-mode input range (±13.8 V at ±15 V supplies) and achieves 80 dB CMRR at 25°C.
Each channel operates independently with matched AC performance: identical small-signal bandwidth (165 MHz), slew rate (400 V/µs), and distortion (−75 dBc THD @ 1 MHz, 150 Ω). Channel-to-channel crosstalk is −64 dB at 1 MHz, confirming low inter-channel coupling in dual-path designs like differential receivers or parallel ADC front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-signal BW | 165 MHz (−3 dB, CL = 0 pF): enables full HD video bandwidth and fast pulse amplification without roll-off |
| Slew rate | 400 V/µs (±15 V, 20-V step): supports clean 10-MHz square waves with <120 ns 0.1% settling |
| THD | −75 dBc (f = 1 MHz, RL = 150 Ω): preserves signal fidelity in baseband video and data acquisition |
| Differential gain/phase | 0.01% / 0.01° (NTSC, ±15 V): meets broadcast video spec for minimal color distortion |
| Output drive | 100 mA (±15 V, RL = 20 Ω): directly drives coaxial cables, multiple 150-Ω video loads, or low-Z ADC inputs |
| Supply range | ±4.5 V to ±16.5 V (dual): accommodates legacy ±5 V, ±12 V, and high-dynamic-range ±15 V systems |
| Crosstalk | −64 dB (f = 1 MHz): ensures isolation between channels in dual ADC buffering or stereo audio paths |
Pinout & Package
THS4042IDRG4 is housed in an 8-pin SOIC (D) package with exposed thermal pad (PowerPAD™), rated for −40°C to +85°C operation. The package supports high-power dissipation (740 mW at TA = 25°C) and requires PCB copper pour under the pad for thermal management.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Channel 1 output | High-current, low-impedance output capable of sourcing/sinking 100 mA; connects to load or feedback network |
| 1IN− | Channel 1 inverting input | Differential input node; used with 1IN+ for inverting gain configurations or feedback termination |
| 1IN+ | Channel 1 noninverting input | Differential input node; accepts single-ended or differential signals; common-mode range ±13.8 V (±15 V) |
| VCC− | Negative supply rail | Connects to system ground or negative supply; must be decoupled with 0.1 µF ceramic capacitor near pin |
| VCC+ | Positive supply rail | Connects to system positive supply; requires local 0.1 µF ceramic decoupling for high-frequency stability |
| 2OUT | Channel 2 output | Independent output identical to 1OUT; enables dual-path signal processing without cross-coupling |
| 2IN− | Channel 2 inverting input | Second differential input pair; electrically isolated from Channel 1 per datasheet crosstalk spec |
| 2IN+ | Channel 2 noninverting input | Second differential input; supports independent gain configuration per channel |
Key Features
| Feature | Design Value |
|---|---|
| Capacitive-load stability | Stable with 0–1000 pF loads without external compensation - eliminates need for isolation resistors in most video applications |
| Video-optimized linearity | 0.01% differential gain / 0.01° differential phase error (NTSC, ±15 V) - meets SMPTE 253M broadcast compliance |
| High-output current | 100 mA continuous output drive into 20 Ω - supports direct connection to 75-Ω coax, multiple video loads, or low-Z ADCs |
| Low distortion at high frequency | −75 dBc THD at 1 MHz (150 Ω) and −89 dBc at 1 MHz (1 kΩ) - preserves SNR in wideband signal chains |
| Wide supply flexibility | Operates from ±4.5 V to ±16.5 V dual supply or 9–33 V single supply - simplifies integration into mixed-voltage systems |
Applications
| Video Line Driver | ADC Input Buffer |
|---|---|
|
Use Scenario: Driving composite video signals over 75-Ω coaxial cable to monitors or recording equipment. IC Role / Device Role / Timing Role: Dual-channel voltage buffer with unity-gain stability and minimal group delay variation. Use Value: 0.01% differential gain error ensures accurate color reproduction; 165 MHz bandwidth preserves luminance detail up to 1080p60. |
Use Scenario: Conditioning analog sensor outputs before sampling by high-speed SAR or pipeline ADCs. IC Role / Device Role / Timing Role: High-slew-rate, low-distortion driver isolating ADC input capacitance from source impedance. Use Value: 400 V/µs slew rate prevents distortion on fast transients; −75 dBc THD maintains >10-bit ENOB at 1 MHz. |
| Dual-Channel Instrumentation | Broadcast Signal Distribution |
|
Use Scenario: Simultaneous amplification of differential sensor pairs (e.g., strain gauge bridges) in test equipment. IC Role / Device Role / Timing Role: Matched dual op-amp providing identical gain, phase, and settling behavior per channel. Use Value: −64 dB crosstalk at 1 MHz prevents signal leakage between channels; 120 ns 0.1% settling enables synchronized sampling. |
Use Scenario: Splitting and amplifying baseband video/audio signals to multiple destinations in broadcast infrastructure. IC Role / Device Role / Timing Role: Unity-gain repeater with high output current to drive multiple 150-Ω video loads. Use Value: 100 mA output drive supports ≥3 simultaneous 150-Ω loads; adaptive capacitive-load compensation avoids external tuning. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| THS4032CD | 100 MHz bandwidth, lower noise (4.5 nV/√Hz vs. 14 nV/√Hz), but only 200 V/µs slew rate and no capacitive-load optimization | Preferred for low-noise, medium-speed applications (e.g., audio preamps); unsuitable for video or fast transient buffering | Select THS4032CD when noise dominates over speed; avoid for >100 MHz signal paths or heavy capacitive loads |
| THS4082ID | 175 MHz bandwidth, 350 V/µs slew rate, 2.7 mA supply current (vs. 11 mA), but only 50 mA output drive and limited capacitive-load stability (up to 100 pF) | Better for battery-powered or space-constrained designs needing moderate drive; not viable for 75-Ω video or multi-load distribution | Choose THS4082ID for low-power, high-bandwidth apps where output current <50 mA suffices; verify stability with load capacitance |
Compared with THS4042IDRG4, THS4032CD trades bandwidth and drive for lower noise, while THS4082ID reduces power and increases bandwidth but sacrifices output current and capacitive-load robustness - making THS4042IDRG4 uniquely suited for video and high-current, high-stability applications.
Availability
THS4042IDRG4 is available at Aetrix Electronics and suitable for video line driving, high-speed ADC buffering, and dual-channel instrumentation requiring stable component supply across industrial temperature ranges (−40°C to +85°C).
Supply support for THS4042IDRG4 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 innovation in high-performance op-amps and signal-chain solutions.
The THS4042IDRG4 belongs to TI's THS40xx family of C-stable, high-speed voltage-feedback amplifiers engineered specifically for video, imaging, and wideband data acquisition systems demanding unity-gain stability and robust capacitive-load drive.
FAQ
What is the operating temperature range for THS4042IDRG4?
The THS4042IDRG4 is specified for industrial operation from −40°C to +85°C, as indicated by the "I" suffix in the part number. This range is validated across all key parameters including bandwidth, slew rate, and THD, ensuring reliable performance in harsh environments such as factory automation and broadcast equipment enclosures.
Does THS4042IDRG4 require external compensation for capacitive loads?
No, THS4042IDRG4 features internal adaptive compensation and remains stable with capacitive loads up to 1000 pF without external components. Datasheet Figure 24 confirms <10% overshoot even with 1000 pF, eliminating the need for series isolation resistors in most video and cable-driving applications.
What is the maximum output current capability of THS4042IDRG4?
THS4042IDRG4 delivers 100 mA typical output current into a 20 Ω load at ±15 V supplies, with absolute maximum rating of 150 mA. This enables direct driving of 75-Ω coax, multiple 150-Ω video terminations, or low-impedance ADC inputs without external current boosting stages.
How does THS4042IDRG4 perform in video applications?
THS4042IDRG4 achieves 0.01% differential gain error and 0.01° differential phase error under NTSC conditions at ±15 V, meeting SMPTE 253M broadcast standards. Its 165 MHz bandwidth and low THD (−75 dBc at 1 MHz) preserve chroma/luma integrity in HD video signal paths.
Is THS4042IDRG4 pin-compatible with other THS40xx devices?
Yes, THS4042IDRG4 shares the same 8-pin SOIC (D) package and pinout with THS4042CD, THS4042CDGN, and THS4042ID - enabling drop-in replacement within the same temperature grade. Pin functions (e.g., 1OUT, 1IN−, VCC+) are identical across all THS4042 variants.
THS4042IDRG4 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:
- Voltage Feedback
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 400V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 165 MHz
- Current - Input Bias:
- 2.5 µA
- Voltage - Input Offset:
- 2.5 mV
- Current - Supply:
- 8mA (x2 Channels)
- Current - Output / Channel:
- 100 mA
- Voltage - Supply Span (Min):
- 9 V
- Voltage - Supply Span (Max):
- 32 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
THS4042IDRG4 FAQ
1.How can I place an order for THS4042IDRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for THS4042IDRG4 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 THS4042IDRG4 reliable?
The price and inventory of THS4042IDRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for THS4042IDRG4 is usually 5 days.
3.What payment methods are accepted for THS4042IDRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for THS4042IDRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for THS4042IDRG4?
THS4042IDRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your THS4042IDRG4 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 THS4042IDRG4?
For technical support, including THS4042IDRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your THS4042IDRG4 requirements.
6.How does Aetrix verify that THS4042IDRG4 is sourced from the original manufacturer or authorized distributors?
All THS4042IDRG4 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 THS4042IDRG4 meets industry standards.
7.What is the process for return or replacement of THS4042IDRG4?
All THS4042IDRG4 units undergo pre-shipment inspection (PSI). If there is an issue with THS4042IDRG4, 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 THS4042IDRG4 part is unused and in its original packaging.
Return procedure for THS4042IDRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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