My Inquiry
My Account
Texas Instruments THS4082IDG4
- Part No.:
- THS4082IDG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
THS4082IDG4.pdf
- Description:
- IC VOLTAGE FEEDBACK 2 CIRC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,984
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
THS4082IDG4 from Texas Instruments is a dual-channel, ultralow-power, high-speed voltage-feedback operational amplifier designed for precision 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%), with 3.4 mA per channel quiescent current and ±15 V supply capability - enabling low-power, high-fidelity analog front-ends in broadcast-grade video routing and DSL line drivers.
For engineers reviewing the THS4082IDG4 datasheet, THS4082IDG4 pinout, THS4082IDG4 application, or THS4082IDG4 equivalent, key selection criteria include its dual-channel architecture with independent input/output paths, PowerPAD™ thermal performance in DGN package, differential gain/phase error (0.01%/0.05°), and compatibility with ±5 V to ±15 V dual supplies for flexible system integration.
Technical Context
The THS4082IDG4 employs a dielectrically isolated complementary bipolar process with GHz-class fT transistors, enabling voltage-feedback topology optimized for wide bandwidth and fast transient response. Its internal compensation targets maximum small-signal bandwidth while maintaining stability under capacitive loads ≥10 pF when series output isolation (≥20 Ω) is applied.
It features rail-to-rail output swing (±13.6 V at ±15 V, RL = 250 Ω), high common-mode rejection (90 dB at ±15 V), and low distortion (−64 dBc THD @ 1 MHz, RL = 150 Ω), making it suitable for driving 75 Ω video lines and high-speed ADC/DAC buffers without external level-shifting or gain staging.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Bandwidth (−3 dB) | 175 MHz at ±15 V, G = 1 - supports full HD baseband video (up to ~100 MHz) with minimal amplitude roll-off. |
| Slew Rate | 230 V/µs at ±15 V - enables clean reproduction of fast-edged composite sync pulses and digital video transitions. |
| Settling Time (0.1%) | 43 ns at ±15 V, 5-V step - ensures accurate pixel-level settling in high-resolution RGB or YUV sampling systems. |
| Differential Gain/Phase | 0.01% / 0.05° at NTSC, ±15 V - meets broadcast video fidelity requirements for color accuracy and timing integrity. |
| THD | −64 dBc @ 1 MHz, RL = 150 Ω - preserves signal purity in RF-modulated CATV distribution and high-speed data acquisition. |
| Supply Current (per ch) | 3.4 mA typ at ±15 V - allows dual-channel operation within 7 mA total, critical for thermally constrained portable test equipment. |
| Input Voltage Noise | 10 nV/√Hz @ 10 kHz - minimizes added noise in low-level sensor signal amplification stages before digitization. |
Pinout & Package
THS4082IDG4 is packaged in an 8-pin MSOP PowerPAD™ (DGN) thermally enhanced surface-mount package with exposed thermal pad electrically isolated from all terminals. The package enables 2.14 W power dissipation at TA = 25°C via optimized PCB copper area and thermal vias.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Channel 1 output | Drives 75 Ω video load or ADC input; requires series resistor ≥20 Ω for >10 pF capacitive loads. |
| 1IN− | Channel 1 inverting input | High-impedance node; trace length must be minimized to reduce parasitic capacitance and maintain phase margin. |
| 1IN+ | Channel 1 noninverting input | Accepts DC-coupled or AC-coupled video signals; common-mode range extends to ±14.1 V at ±15 V supply. |
| VCC− | Negative supply rail | Must be decoupled with 0.1 µF ceramic + 6.8 µF tantalum placed ≤0.1 inch from pin. |
| VCC+ | Positive supply rail | Same decoupling requirement as VCC−; shared decoupling not recommended across channels. |
| 2OUT | Channel 2 output | Independent output path; crosstalk to Channel 1 is −75 dB @ 1 MHz, enabling simultaneous RGB channel buffering. |
| 2IN− | Channel 2 inverting input | Electrically isolated from Channel 1 inputs; layout symmetry recommended to match propagation delay. |
| 2IN+ | Channel 2 noninverting input | Supports identical signal conditioning as Channel 1; no internal connection to Channel 1 pins. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow quiescent current | 3.4 mA per channel enables dual op-amp operation in battery-powered video monitors and field test gear. |
| PowerPAD™ thermal enhancement | DGN package achieves 4.7°C/W junction-to-case thermal resistance, allowing sustained 85 mA output drive at 85°C ambient. |
| Video-optimized distortion performance | 0.01% differential gain error ensures stable color saturation in NTSC/PAL broadcast signal chains without post-correction. |
| High output drive capability | 85 mA typical short-circuit current supports direct driving of 50 Ω RF traces and 75 Ω coaxial cables without external buffers. |
| Wide supply range | Operates from ±5 V to ±15 V dual supply or 10 V to 30 V single supply - simplifies integration into legacy industrial and telecom power domains. |
Applications
| SDI Signal Conditioning | Broadcast Video Distribution |
|---|---|
Use Scenario: Amplifying and equalizing serial digital interface (SDI) baseband signals prior to cable transmission over 100 m coaxial runs. IC Role / Device Role / Timing Role: Dual-channel THS4082IDG4 serves as a reclocking buffer and cable driver, with one channel handling Y (luma) and the other handling Cb/Cr (chroma) components. Use Value: 175 MHz bandwidth and 230 V/µs slew rate preserve SDI eye diagram integrity; 0.01% differential gain prevents chroma shift across long-haul studio links. | Use Scenario: Splitting and distributing composite NTSC video signals to multiple monitors in broadcast control rooms. IC Role / Device Role / Timing Role: THS4082IDG4 operates in unity-gain follower configuration per channel to isolate source impedance and prevent loading-induced ghosting. Use Value: −75 dB channel-to-channel crosstalk eliminates inter-channel interference; 0.05° differential phase maintains precise hue alignment between distributed outputs. |
| DSL Line Driver | High-Speed Data Acquisition Front-End |
Use Scenario: Driving twisted-pair telephone lines in ADSL2+ line cards where signal fidelity up to 2.2 MHz must be maintained amid high common-mode noise. IC Role / Device Role / Timing Role: THS4082IDG4 functions as a balanced line driver with external feedback network setting gain and common-mode rejection. Use Value: 90 dB CMRR at ±15 V suppresses induced noise on long loops; ±13.6 V output swing ensures robust signal headroom against line attenuation. | Use Scenario: Buffering analog outputs from high-speed DACs (e.g., 125 MSPS) into 50 Ω measurement instrumentation inputs. IC Role / Device Role / Timing Role: THS4082IDG4 provides low-noise, fast-settling gain stage ahead of oscilloscope or spectrum analyzer inputs. Use Value: 43 ns settling time guarantees <0.1% error on 5-V full-scale steps; 10 nV/√Hz input noise preserves SNR in sub-12-bit precision applications. |
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 |
|---|---|---|---|
| THS4082CDGN | Same silicon, C-suffix (0°C to 70°C) vs I-suffix (−40°C to 85°C); identical electrical specs and DGN package. | Not rated for extended temperature industrial or automotive environments requiring −40°C startup. | Select THS4082CDGN only for commercial-grade lab equipment or consumer video products operating within 0–70°C. |
| THS4032IDGN | Lower bandwidth (100 MHz), higher noise (12 nV/√Hz), but lower THD (−72 dBc @ 1 MHz) and same DGN package. | Better suited for audio line drivers or medium-speed data converters where distortion dominates over bandwidth. | Choose THS4032IDGN when system bandwidth demand is ≤100 MHz and ultra-low harmonic distortion is prioritized over speed. |
Compared with THS4082CDGN, the THS4082IDG4 offers guaranteed operation down to −40°C for outdoor or industrial deployment; compared with THS4032IDGN, it trades 28 dB higher THD for 75 MHz additional bandwidth - favoring video and high-speed comms over pure audio fidelity.
Availability
THS4082IDG4 is available at Aetrix Electronics and suitable for broadcast video infrastructure, DSL line card manufacturing, and high-speed data acquisition systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for THS4082IDG4 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-speed op-amps and precision signal chain solutions.
The THS4082IDG4 belongs to TI's THS408x family of ultralow-power, high-speed voltage-feedback amplifiers engineered specifically for broadcast video, communications infrastructure, and instrumentation applications demanding wide bandwidth, low distortion, and thermal robustness.
FAQ
What is the operating temperature range of the THS4082IDG4?
The THS4082IDG4 is specified for operation from −40°C to +85°C ambient temperature (I-suffix grade), making it suitable for industrial, outdoor, and automotive-adjacent applications where thermal extremes are encountered. This range is validated per TI's recommended operating conditions and absolute maximum ratings, with full electrical performance guaranteed across the entire span including input offset drift (15 µV/°C) and supply current stability.
Does the THS4082IDG4 require external compensation for stability?
No, the THS4082IDG4 is internally compensated for unity-gain stability. However, when driving capacitive loads exceeding 10 pF, a series resistor (≥20 Ω) must be placed directly at the output pin to maintain phase margin and prevent ringing or oscillation - as confirmed in the "Driving a Capacitive Load" section of the official datasheet. This is a layout-dependent requirement, not a compensation network.
Can the THS4082IDG4 be used with single-supply operation?
Yes, the THS4082IDG4 supports single-supply operation from 10 V to 30 V, with input common-mode range extending to within 1.2 V of the negative rail and output swing to within 1.4 V of either rail (at ±15 V). For single-supply use, biasing the noninverting input at mid-rail (e.g., VCC/2) is required to maximize dynamic range, and the datasheet confirms full functionality at 10 V and 30 V single-rail configurations.
What is the thermal performance advantage of the DGN package in the THS4082IDG4?
The DGN package of the THS4082IDG4 incorporates TI's PowerPAD™ technology, delivering a junction-to-case thermal resistance (θJC) of 4.7°C/W - over 8× better than the standard SOIC (D) package (38.3°C/W). When properly soldered to a 68 × 70 mil thermal pad with five 13-mil vias connected to an internal ground plane, it enables 2.14 W continuous power dissipation at 25°C ambient, critical for sustained 85 mA output drive in compact enclosures.
How does the THS4082IDG4 compare to the THS4081 in terms of pin compatibility and circuit reuse?
The THS4082IDG4 (dual-channel) and THS4081 (single-channel) share identical pinouts per channel in the DGN package: both use 1IN+, 1IN−, 1OUT, VCC−, VCC+ configuration. However, the THS4082IDG4 occupies the same 8-pin footprint with two independent amplifiers, so replacing a THS4081 with half of a THS4082IDG4 requires no PCB changes - but unused pins (2IN+, 2IN−, 2OUT) must remain unconnected or grounded per design guidelines to avoid noise coupling.
THS4082IDG4 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:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
THS4082IDG4 FAQ
1.How can I place an order for THS4082IDG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for THS4082IDG4 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 THS4082IDG4 reliable?
The price and inventory of THS4082IDG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for THS4082IDG4 is usually 5 days.
3.What payment methods are accepted for THS4082IDG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for THS4082IDG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for THS4082IDG4?
THS4082IDG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your THS4082IDG4 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 THS4082IDG4?
For technical support, including THS4082IDG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your THS4082IDG4 requirements.
6.How does Aetrix verify that THS4082IDG4 is sourced from the original manufacturer or authorized distributors?
All THS4082IDG4 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 THS4082IDG4 meets industry standards.
7.What is the process for return or replacement of THS4082IDG4?
All THS4082IDG4 units undergo pre-shipment inspection (PSI). If there is an issue with THS4082IDG4, 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 THS4082IDG4 part is unused and in its original packaging.
Return procedure for THS4082IDG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
THS4082IDG4 Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
