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Texas Instruments THS4082CDGNR
- Part No.:
- THS4082CDGNR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
THS4082CDGNR.pdf
- Description:
- IC OPAMP VFB 2 CIRCUIT 8HVSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,017
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Product details
Overview
THS4082CDGNR 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 (G = 1), 230 V/µs slew rate, 43 ns settling time (0.1%), and 85 mA output drive per channel, operating on ±5 V to ±15 V supplies. It is used in analog video line drivers, ADC/DAC buffer stages, and high-fidelity signal reconstruction circuits.
For engineers reviewing the THS4082CDGNR datasheet, THS4082CDGNR pinout, THS4082CDGNR application, or THS4082CDGNR equivalent, key selection criteria include quiescent current per channel (3.4 mA), differential gain/phase error (0.01% / 0.05°), THD at 1 MHz (−64 dBc, RL = 150 Ω), and MSOP PowerPAD™ thermal performance with θJC = 4.7°C/W.
Technical Context
The THS4082CDGNR employs a dielectrically isolated complementary bipolar process enabling GHz fT transistors, supporting wideband voltage-feedback architecture with internal compensation optimized for bandwidth and slew rate. Its dual-channel layout shares no internal coupling beyond specified −75 dB crosstalk at 1 MHz.
It operates in dual-supply mode (±5 V to ±15 V) or single-supply (10 V to 30 V), with rail-to-rail input common-mode range (±13.8 V at ±15 V) and output swing up to ±13.8 V into 1 kΩ. Input bias current remains stable across temperature (1.2–6 µA typ), and PSRR exceeds 79 dB over full operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Bandwidth (−3 dB) | 175 MHz at G = 1, ±15 V - supports baseband video and broadband IF signal amplification without gain peaking. |
| Slew Rate | 230 V/µs at ±15 V - enables faithful reproduction of fast transient signals up to ~35 MHz full-power sine waves. |
| Settling Time | 43 ns to 0.1% at ±15 V - meets timing-critical sampling requirements in high-speed data acquisition systems. |
| THD | −64 dBc at 1 MHz, RL = 150 Ω - preserves signal fidelity in broadcast-quality analog video paths. |
| Quiescent Current | 3.4 mA per channel at ±15 V - allows dual-channel high-speed operation within tight power budgets (e.g., 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 accuracy requirements. |
| Output Drive | 85 mA per channel into 20 Ω - drives 75 Ω coaxial lines directly with series termination, eliminating external buffers. |
Pinout & Package
The THS4082CDGNR is housed in an 8-pin MSOP PowerPAD™ (DGN) package with exposed thermal pad electrically isolated from all terminals. The package measures 3.0 mm × 3.0 mm × 1.0 mm and supports high-power-density PCB layouts with low thermal resistance (θJC = 4.7°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Channel 1 output | High-current, low-impedance output node capable of sourcing/sinking 85 mA; requires local 0.1 µF decoupling. |
| 1IN− | Channel 1 inverting input | High-impedance node sensitive to stray capacitance; trace length must be minimized to preserve phase margin. |
| 1IN+ | Channel 1 noninverting input | High-impedance node; RC filtering here implements single-pole low-pass anti-aliasing without degrading stability. |
| VCC− | Negative supply rail | Connect to clean ground plane or negative supply; requires dedicated 6.8 µF + 0.1 µF decoupling per rail. |
| VCC+ | Positive supply rail | Connect to clean positive supply; same decoupling as VCC−; shared supply routing must avoid noise coupling between channels. |
| 2OUT | Channel 2 output | Independent output with identical drive capability; crosstalk to Channel 1 is −75 dB at 1 MHz - suitable for stereo or dual-path processing. |
| 2IN− | Channel 2 inverting input | Electrically isolated from Channel 1 inputs; layout symmetry recommended to match parasitic capacitance and delay. |
| 2IN+ | Channel 2 noninverting input | Matched to 1IN+ in offset and noise; enables precision differential-to-single-ended conversion when paired with matched feedback networks. |
Key Features
| Feature | Design Value |
|---|---|
| PowerPAD™ thermal enhancement | Enables 2.14 W power dissipation at TA = 25°C via soldered thermal pad - critical for sustained high-output-drive operation in compact enclosures. |
| Ultralow distortion | −64 dBc THD at 1 MHz into 150 Ω ensures minimal harmonic contamination in composite video and RF IF chains. |
| Video-optimized AC performance | 35 MHz 0.1 dB flatness and 0.01%/0.05° differential gain/phase meet broadcast-grade analog video line driver specs. |
| Wide supply range | Operates from ±5 V to ±15 V dual or 10 V–30 V single supply - simplifies integration into legacy and modern mixed-voltage systems. |
| Low input bias current | 1.2–6 µA typical across temperature - maintains accuracy in high-impedance sensor interface and photodiode transimpedance applications. |
Applications
| SD/HD Analog Video Distribution | High-Speed Data Acquisition Buffer |
|---|---|
Use Scenario: Driving 75 Ω coaxial cables from FPGA DAC outputs in professional video switchers. IC Role / Device Role / Timing Role: Dual-channel unity-gain buffer with DC-coupled output, preserving sync pulse integrity and color burst amplitude. Use Value: 0.01% differential gain error prevents hue shifts; 175 MHz bandwidth passes full NTSC/PAL luminance spectrum without attenuation. | Use Scenario: Isolating and driving 12-bit, 100 MSPS ADC front-end in automated test equipment. IC Role / Device Role / Timing Role: Single-supply (±5 V) driver stage providing 43 ns settling to 0.1%, matching ADC aperture uncertainty. Use Value: 230 V/µs slew rate prevents slewing-induced distortion on fast-rising digital waveforms; 85 mA drive sustains 50 Ω back-termination. |
| Communications Baseband Signal Conditioning | Dual-Channel Precision Instrumentation Amplifier Core |
Use Scenario: Amplifying I/Q baseband signals in software-defined radio transceivers before upconversion. IC Role / Device Role / Timing Role: Dual-channel, matched-gain (G = 2) amplifier with <−75 dB inter-channel crosstalk at 1 MHz. Use Value: −64 dBc THD at 1 MHz minimizes reciprocal mixing; low 10 nV/√Hz input voltage noise preserves SNR in weak-signal reception. | Use Scenario: Configuring two THS4082CDGNR channels as precision difference amplifier (CH1) and reference buffer (CH2) in medical ECG front-ends. IC Role / Device Role / Timing Role: Dual-channel op-amp with matched input offset drift (15 µV/°C) and CMRR > 78 dB for common-mode rejection. Use Value: 0.05° differential phase error ensures accurate timing alignment between differential signal paths; MSOP footprint saves board space in portable diagnostics. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed dual op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| THS4032CDGNR | 100 MHz bandwidth, 100 V/µs slew rate, 2.5 mA per channel quiescent current - lower speed, lower power. | Better suited for cost-sensitive, medium-bandwidth video or audio where 175 MHz is unnecessary. | Select when system bandwidth ≤ 100 MHz and thermal budget is constrained; not drop-in due to lower slew and bandwidth. |
| LMH6722MA/NOPB | 380 MHz bandwidth, 1100 V/µs slew rate, 12.5 mA per channel - higher speed, higher power, different pinout. | Required for >200 MHz IF amplification or ultrafast pulse conditioning where THS4082CDGNR bandwidth is limiting. | Choose when full-power bandwidth > 7 MHz is required; requires PCB redesign due to SOIC-8 vs MSOP-8 and different pin mapping. |
Compared with THS4082CDGNR, THS4032CDGNR trades bandwidth and slew for lower quiescent current and cost, while LMH6722MA/NOPB provides significantly higher speed at the expense of power and layout compatibility - making THS4082CDGNR the optimal balance for broadcast video and medium-speed data acquisition.
Availability
THS4082CDGNR is available at Aetrix Electronics and suitable for SD/HD video distribution, high-speed data acquisition, communications baseband conditioning, and precision instrumentation requiring stable component supply across industrial temperature ranges (0°C to 70°C).
Supply support for THS4082CDGNR 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 expertise in high-performance op-amps and signal chain solutions.
The THS4082CDGNR belongs to TI's THS408x family of ultralow-power, high-speed voltage-feedback amplifiers designed specifically for video signal integrity and communication infrastructure where bandwidth, distortion, and power efficiency are co-optimized.
FAQ
What is the maximum supply voltage rating for the THS4082CDGNR?
The THS4082CDGNR has an absolute maximum supply voltage rating of ±16.5 V for dual-supply operation. Exceeding this voltage risks permanent damage. Recommended operating range is ±5 V to ±15 V, with single-supply operation supported from 10 V to 30 V. Always observe derating curves in the datasheet for extended temperature operation.
Does the THS4082CDGNR require external compensation for stability with capacitive loads?
Yes - the THS4082CDGNR is internally compensated for optimal bandwidth and slew rate but becomes unstable with >10 pF capacitive loads directly at the output. A series resistor (≥20 Ω) must be placed between the output pin and the load to restore phase margin. For 75 Ω transmission lines, a 75 Ω series resistor provides both isolation and impedance matching.
How does the PowerPAD™ thermal pad on the THS4082CDGNR improve thermal performance?
The exposed thermal pad on the THS4082CDGNR's DGN package provides direct die-to-PCB conduction, achieving θJC = 4.7°C/W. When soldered to a 68 mil × 70 mil copper area with five 13-mil vias connected solidly (not webbed) to an internal ground plane, it enables 2.14 W power dissipation at TA = 25°C - essential for sustained 85 mA output drive without thermal shutdown.
Can the THS4082CDGNR operate from a single 12-V supply?
Yes - the THS4082CDGNR supports single-supply operation from 10 V to 30 V. At 12 V, the input common-mode range extends from 1.2 V to 10.8 V (typ), and output swing reaches ±3.8 V into 150 Ω. Ensure proper level-shifting of input signals and use rail-splitting or reference biasing to maintain linear operation in AC-coupled configurations.
What is the channel-to-channel crosstalk specification for the THS4082CDGNR?
The THS4082CDGNR specifies −75 dB channel-to-channel crosstalk at 1 MHz under ±5 V or ±15 V supply conditions. This value is measured with one channel driven and the other terminated, confirming electrical isolation sufficient for stereo audio, I/Q signal paths, and dual-sensor readout where inter-channel interference must remain below −70 dB.
THS4082CDGNR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- 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-HVSSOP
THS4082CDGNR FAQ
1.How can I place an order for THS4082CDGNR through Aetrix?
Please submit a Request for Quotation (RFQ) for THS4082CDGNR 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 THS4082CDGNR reliable?
The price and inventory of THS4082CDGNR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for THS4082CDGNR is usually 5 days.
3.What payment methods are accepted for THS4082CDGNR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for THS4082CDGNR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for THS4082CDGNR?
THS4082CDGNR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your THS4082CDGNR 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 THS4082CDGNR?
For technical support, including THS4082CDGNR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your THS4082CDGNR requirements.
6.How does Aetrix verify that THS4082CDGNR is sourced from the original manufacturer or authorized distributors?
All THS4082CDGNR 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 THS4082CDGNR meets industry standards.
7.What is the process for return or replacement of THS4082CDGNR?
All THS4082CDGNR units undergo pre-shipment inspection (PSI). If there is an issue with THS4082CDGNR, 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 THS4082CDGNR part is unused and in its original packaging.
Return procedure for THS4082CDGNR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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