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Texas Instruments THS4082CDG4
- Part No.:
- THS4082CDG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
THS4082CDG4.pdf
- Description:
- IC VOLTAGE FEEDBACK 2 CIRC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,531
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Product details
Overview
THS4082CDG4 from Texas Instruments is a dual-channel, ultralow-power, high-speed voltage-feedback operational amplifier optimized for video and communication signal conditioning. It delivers 175 MHz bandwidth (−3 dB, G = 1), 230 V/µs slew rate, and 43 ns settling time (0.1%) at ±15 V supply, with 3.4 mA per channel quiescent current and 85 mA output drive-enabling high-fidelity analog front-end amplification in broadcast-grade video routing and DSL line drivers.
For engineers reviewing the THS4082CDG4 datasheet, THS4082CDG4 pinout, THS4082CDG4 application, or THS4082CDG4 equivalent, this page provides verified electrical specifications, SOIC-8 package terminal mapping, video-system design guidance, and validated alternative options for low-distortion, wideband op-amp selection.
Technical Context
The THS4082CDG4 employs a dielectrically isolated complementary bipolar process enabling simultaneous high speed and low distortion. Its voltage-feedback architecture supports stable unity-gain operation while maintaining 0.01% differential gain and 0.05° differential phase error under NTSC video conditions.
It operates from dual supplies of ±5 V to ±15 V (or single 10–30 V), features rail-to-rail input common-mode range (±13.8 V at ±15 V), and integrates internal compensation optimized for minimal phase margin degradation-requiring external series output resistance only when driving >10 pF capacitive loads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Bandwidth (−3 dB) | 175 MHz at ±15 V, G = 1 - enables full HD baseband video amplification without gain peaking |
| Slew Rate | 230 V/µs at ±15 V - supports fast transient response for composite sync pulses and digital eye diagram integrity |
| Settling Time (0.1%) | 43 ns at ±15 V, 5-V step - meets timing budget for multi-channel video DAC reconstruction filters |
| Total Harmonic Distortion | −64 dBc at 1 MHz, RL = 150 Ω - preserves SNR in 75-Ω broadcast video distribution paths |
| Quiescent Current | 3.4 mA per channel - allows dual-amplifier operation in thermally constrained portable test equipment |
| Differential Gain/Phase | 0.01% / 0.05° at NTSC, ±15 V - satisfies SMPTE RP 168 and ITU-R BT.601 analog video fidelity requirements |
| Output Drive | 85 mA (typ) into 20 Ω - drives coaxial cables directly without external buffer stages |
Pinout & Package
THS4082CDG4 is housed in an 8-pin SOIC (D) package with gull-wing leads, compliant with JEDEC MS-012AC. The package includes two NC (no internal connection) pins for thermal and layout isolation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Channel 1 output | High-current, low-impedance output node; requires local 0.1 µF ceramic decoupling to ground |
| 1IN− | Channel 1 inverting input | High-impedance node sensitive to stray capacitance; must be routed short and away from noisy traces |
| 1IN+ | Channel 1 noninverting input | DC-biased reference point for single-ended input configurations; matched trace length critical for CMRR |
| VCC− | Negative supply rail | Return path for both channels; connects to dedicated ground plane region beneath IC footprint |
| VCC+ | Positive supply rail | Power entry point requiring 6.8 µF tantalum + 0.1 µF ceramic decoupling placed ≤2 mm from pin |
| 2OUT | Channel 2 output | Independent output with identical AC performance; shares VCC+ and VCC− rails with Channel 1 |
| 2IN− | Channel 2 inverting input | Electrically isolated from Channel 1 inputs; crosstalk < −75 dB at 1 MHz ensures dual-channel independence |
| 2IN+ | Channel 2 noninverting input | Enables true dual-channel synchronous amplification without inter-channel coupling artifacts |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow quiescent current | 3.4 mA per channel enables dual-op-amp designs in battery-powered video monitors with <1 W total dissipation |
| 0.1 dB flatness bandwidth | 35 MHz at ±15 V supports full NTSC/PAL luminance bandwidth without post-compensation EQ |
| Channel-to-channel crosstalk | −75 dB at 1 MHz prevents ghosting or color bleed between parallel video channels in RGB or YUV systems |
| Input voltage noise | 10 nV/√Hz at 10 kHz - maintains >60 dB SNR for 1 Vpp signals in 10 MHz baseband applications |
| Power supply rejection | 90 dB at DC, >79 dB up to 100 kHz - rejects switching regulator ripple in mixed-signal embedded video encoders |
Applications
| Broadcast Video Distribution | DSL Line Driver |
|---|---|
Use Scenario: Amplifying and distributing composite NTSC video signals across multiple monitors in security control rooms. IC Role / Device Role / Timing Role: Dual-channel video buffer with unity-gain configuration, preserving sync tip amplitude and chroma burst phase integrity. Use Value: 0.01% differential gain and 0.05° differential phase ensure color fidelity across all outputs without manual calibration. |
Use Scenario: Driving twisted-pair telephone lines in ADSL2+ line cards where high slew rate and low THD are required for upstream data transmission. IC Role / Device Role / Timing Role: High-output-current line driver operating at ±12 V with 230 V/µs slew rate to maintain symbol edge integrity at 2.2 MHz. Use Value: −64 dBc THD at 1 MHz minimizes intermodulation distortion in multi-tone upstream spectra. |
| Medical Imaging Signal Chain | Test & Measurement Front End |
Use Scenario: Conditioning analog outputs from ultrasound beamformer ASICs before ADC sampling at 40 MSPS. IC Role / Device Role / Timing Role: Wideband gain stage providing 175 MHz bandwidth and 43 ns settling to support 12-bit ENOB at Nyquist. Use Value: 85 mA output drive directly interfaces 50 Ω coaxial cables to oscilloscope inputs without impedance-matching networks. |
Use Scenario: Building modular signal sources in automated test equipment requiring low-noise, fast-settling amplification of arbitrary waveforms. IC Role / Device Role / Timing Role: Dual-channel waveform amplifier supporting independent gain/offset control for differential stimulus generation. Use Value: 3.4 mA per channel quiescent current allows integration of eight THS4082CDG4 units on a single 12 V/2 A power rail. |
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, 100 V/µs slew rate, 2.5 mA per channel - lower speed but 30% lower power | Preferred for cost-sensitive SD video or audio line drivers where 175 MHz is unnecessary | Select THS4032CD when system bandwidth requirement is ≤100 MHz and thermal envelope is tighter than THS4082CDG4 allows |
| OPA2691U | 320 MHz bandwidth, 4300 V/µs slew rate, 12.5 mA per channel - higher speed but 3.7× higher quiescent current | Required for >200 MHz RF IF amplification or ultrafast pulse shaping in radar systems | Select OPA2691U only when THS4082CDG4's 175 MHz bandwidth is insufficient and power budget permits 12.5 mA/channel |
Compared with THS4082CDG4, THS4032CD trades bandwidth for lower power and cost in legacy video systems, while OPA2691U delivers extreme speed at significantly higher supply current-making THS4082CDG4 the optimal balance for broadcast-quality video and broadband communications where 175 MHz and 3.4 mA/channel are simultaneously required.
Availability
THS4082CDG4 is available at Aetrix Electronics and suitable for broadcast video distribution, DSL line driver modules, medical imaging front ends, and automated test equipment requiring stable component supply and long-term industrial availability.
Supply support for THS4082CDG4 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 op-amps and signal chain solutions.
The THS4082CDG4 belongs to TI's THS408x family of ultralow-power, high-speed op-amps designed specifically for video signal conditioning, communications infrastructure, and precision instrumentation where bandwidth, distortion, and power efficiency must coexist.
FAQ
What is the maximum supply voltage rating for THS4082CDG4?
The THS4082CDG4 has an absolute maximum supply voltage rating of ±16.5 V for dual-supply operation. Operating beyond this limit risks permanent damage. Recommended dual-supply range is ±5 V to ±15 V; single-supply operation supports 10 V to 30 V. At ±15 V, the device delivers its full 175 MHz bandwidth and 230 V/µs slew rate-key parameters specified in the THS4082CDG4 datasheet.
Does THS4082CDG4 support single-supply operation?
Yes, THS4082CDG4 supports single-supply operation from 10 V to 30 V. Its input common-mode range extends to within 1.2 V of the negative rail (e.g., 1.2 V above ground at 10 V supply), and output swing reaches ±3.4 V into 150 Ω at ±5 V. For single-ended 24 V systems, biasing the noninverting inputs at mid-supply via precision resistors enables rail-to-rail output utilization-verified in THS4082CDG4 application circuits.
What is the thermal performance difference between THS4082CDG4 in SOIC-8 (D) vs. MSOP-8 (DGN) packages?
The THS4082CDG4 in SOIC-8 (D) package has θJA = 167°C/W (JEDEC Low-K board), limiting power dissipation to 740 mW at TA = 25°C. In contrast, the MSOP-8 PowerPAD™ (DGN) variant achieves θJA = 58.4°C/W and 2.14 W power rating due to its exposed thermal pad. THS4082CDG4 itself is the SOIC-8 version-no thermal pad-so designers must use copper pour and thermal vias under the D package body to approach 1 W continuous dissipation safely.
Can THS4082CDG4 drive 75 Ω coaxial cable directly?
Yes, THS4082CDG4 can drive 75 Ω coaxial cable directly. With 85 mA typical output current and ±13.6 V swing into 250 Ω at ±15 V, it delivers >2 Vpp into 75 Ω with headroom for sync tips. TI recommends placing a 75 Ω series resistor at the THS4082CDG4 output to isolate reactive load effects and match source impedance-this configuration is validated in THS4082CDG4 evaluation module schematics and maintains <0.1% gain error across DC–35 MHz.
Is THS4082CDG4 pin-compatible with other THS408x variants?
Yes, THS4082CDG4 is pin-compatible with THS4082ID (−40°C to 85°C grade) and THS4082CDGN (MSOP-8 PowerPAD™ version) in the same SOIC-8 footprint. All share identical pinout: 1OUT, 1IN−, 1IN+, VCC−, VCC+, 2OUT, 2IN−, 2IN+. However, THS4082CDG4 is not pin-compatible with the single-channel THS4081CDG4-the latter uses a different 8-pin SOIC mapping (NC, IN−, IN+, VCC−, NC, VCC+, OUT, NC). Always verify pin function against THS4082CDG4-specific diagrams.
THS4082CDG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- Voltage Feedback
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 230V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 175 MHz
- Current - Input Bias:
- 1.2 µA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 3.4mA (x2 Channels)
- Current - Output / Channel:
- 85 mA
- Voltage - Supply Span (Min):
- 10 V
- Voltage - Supply Span (Max):
- 30 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
THS4082CDG4 FAQ
1.How can I place an order for THS4082CDG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for THS4082CDG4 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 THS4082CDG4 reliable?
The price and inventory of THS4082CDG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for THS4082CDG4 is usually 5 days.
3.What payment methods are accepted for THS4082CDG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for THS4082CDG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for THS4082CDG4?
THS4082CDG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your THS4082CDG4 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 THS4082CDG4?
For technical support, including THS4082CDG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your THS4082CDG4 requirements.
6.How does Aetrix verify that THS4082CDG4 is sourced from the original manufacturer or authorized distributors?
All THS4082CDG4 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 THS4082CDG4 meets industry standards.
7.What is the process for return or replacement of THS4082CDG4?
All THS4082CDG4 units undergo pre-shipment inspection (PSI). If there is an issue with THS4082CDG4, 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 THS4082CDG4 part is unused and in its original packaging.
Return procedure for THS4082CDG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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