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Texas Instruments THS4051IDG4
- Part No.:
- THS4051IDG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
THS4051IDG4.pdf
- Description:
- IC VOLTAGE FEEDBACK 1 CIRC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,189
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Product details
Overview
THS4051IDG4 from Texas Instruments is a single-channel, high-speed voltage-feedback operational amplifier optimized for video, imaging, and communication signal conditioning. It delivers 70 MHz small-signal bandwidth (G = 1), 240 V/µs slew rate, 60 ns settling time (0.1%), ±15 V dual-supply operation, and 100 mA output drive - enabling precision analog front-ends in broadcast-grade video routing and high-resolution ADC/DAC buffer stages.
For engineers reviewing the THS4051IDG4 datasheet, THS4051IDG4 pinout, THS4051IDG4 application, or THS4051IDG4 equivalent, this page provides verified technical context, package-specific pin mapping, real-world video and instrumentation use cases, and validated alternative options with documented functional trade-offs.
Technical Context
The THS4051IDG4 employs a dielectrically isolated complementary bipolar process with GHz fT transistors, enabling voltage-feedback architecture with unity-gain stability across inverting and non-inverting configurations. Its internal compensation targets maximum bandwidth/slew rate, requiring external series resistance (≥20 Ω) when driving >10 pF capacitive loads to maintain phase margin.
It achieves professional video performance via ultra-low distortion (−82 dBc THD at 1 MHz, RL = 150 Ω), 0.01% differential gain error, and 0.01° differential phase error under NTSC conditions - all specified over −40°C to +85°C operating range with ±4.5 V to ±16.5 V supply flexibility.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-signal BW (−3 dB) | 70 MHz at G = 1, ±15 V - supports full HD baseband video (30 MHz 0.1-dB flatness) without gain peaking. |
| Slew rate | 240 V/µs at ±15 V - enables clean 20-Vpp output steps at ≥10 MHz without slewing distortion. |
| Settling time (0.1%) | 60 ns for 5-V step - meets timing-critical sampling requirements in high-speed data acquisition systems. |
| Total harmonic distortion | −82 dBc at 1 MHz, RL = 150 Ω - preserves signal fidelity in RF IF-stages and spectrum analyzer front-ends. |
| Output current | 100 mA typical - drives multiple 75-Ω video lines or low-impedance ADC inputs without external buffers. |
| Supply voltage range | ±4.5 V to ±16.5 V dual supply - accommodates legacy ±5 V and modern ±12 V/±15 V system rails. |
| Operating temperature | −40°C to +85°C - qualified for industrial video encoders, medical imaging, and telecom infrastructure. |
Pinout & Package
THS4051IDG4 is packaged in an 8-pin SOIC (D package) with exposed thermal pad (PowerPAD™). The package supports standard surface-mount reflow and provides enhanced thermal dissipation (θJA = 167°C/W on JEDEC Low-K board).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NULL) | Offset null adjustment | Unused in most applications; left open or connected per offset trimming requirement. |
| 2 (IN−) | Inverting input | Differential input node; high-impedance (1 MΩ) with 1.5 pF capacitance - requires matched trace routing in high-frequency layouts. |
| 3 (IN+) | Non-inverting input | Differential input node; common-mode range extends to ±14.3 V at ±15 V supply - supports rail-to-rail input in high-voltage signal chains. |
| 4 (VCC−) | Negative supply rail | Connects to system ground or negative supply; decoupling capacitor (0.1 µF) required within 5 mm. |
| 5 (OUT) | Amplifier output | Capable of ±13.6 V swing into 1 kΩ; series resistor (≥20 Ω) mandatory for >10 pF capacitive loads to prevent oscillation. |
| 6 (NC) | No internal connection | Not bonded; must remain unconnected to avoid parasitic coupling or EMI ingress. |
| 7 (VCC+) | Positive supply rail | Connects to system positive supply; decoupling capacitor (0.1 µF) required within 5 mm. |
| 8 (NULL) | Offset null adjustment | Unused in most applications; left open or connected per offset trimming requirement. |
Key Features
| Feature | Design Value |
|---|---|
| 70-MHz bandwidth at G = 1 | Enables direct amplification of baseband video signals up to 30 MHz (0.1-dB flatness) without external equalization. |
| 0.01% differential gain / 0.01° differential phase | Meets SMPTE 259M broadcast video specifications for minimal color fidelity loss in RGB/YUV processing paths. |
| 240 V/µs slew rate | Supports fast transient response in pulse-amplifier and laser-diode driver circuits without rate-limiting artifacts. |
| −82 dBc THD at 1 MHz | Preserves dynamic range in wideband IF amplifiers and spectrum analysis front-ends where spurious content degrades SNR. |
| Stable at all gains | Eliminates need for external compensation networks in both inverting and non-inverting configurations - reduces BOM count. |
Applications
| Video Signal Distribution | High-Speed Data Acquisition |
|---|---|
|
Use Scenario: Routing composite video signals across multiple monitors in broadcast control rooms with minimal crosstalk and color shift. IC Role / Device Role / Timing Role: Buffer and level-shift NTSC/PAL signals while maintaining differential gain/phase integrity across 4–8 parallel outputs. Use Value: 0.01% differential gain error ensures consistent hue saturation across all display outputs without manual calibration. |
Use Scenario: Driving the input of a 12-bit, 100-MSPS ADC in automated test equipment requiring low-noise, fast-settling analog front-end. IC Role / Device Role / Timing Role: Precision gain stage and anti-aliasing filter driver with 60 ns settling to meet ADC aperture uncertainty budgets. Use Value: 240 V/µs slew rate prevents missing codes during full-scale transitions, preserving effective number of bits (ENOB). |
| Laser Diode Modulation | RF IF Amplification |
|
Use Scenario: High-fidelity modulation of fiber-optic transmitter lasers in 1–2.5 Gbps optical links using analog intensity modulation. IC Role / Device Role / Timing Role: Fast current-to-voltage converter and output driver delivering precise, low-distortion bias current waveforms. Use Value: 70 MHz bandwidth and −82 dBc THD ensure clean eye diagrams and low bit-error rates (BER) at multi-Gbps data rates. |
Use Scenario: Amplifying 70-MHz IF signals in software-defined radio receivers prior to quadrature demodulation. IC Role / Device Role / Timing Role: Fixed-gain IF amplifier with high PSRR (84 dB) to reject local oscillator feedthrough and power supply noise. Use Value: 84 dB PSRR at DC and >60 dB up to 10 MHz suppresses supply-induced spurs that would alias into baseband. |
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 |
|---|---|---|---|
| THS4031ID | 100 MHz bandwidth, 100 V/µs slew rate, lower 14 nV/√Hz input voltage noise vs. THS4051IDG4's 14 nV/√Hz but higher 1.2 pA/√Hz current noise. | Better suited for low-noise preamplification of high-impedance sensors; less optimal for video due to reduced slew rate and differential phase (0.05°). | Select THS4031ID only when bandwidth >70 MHz is critical and video fidelity is secondary. |
| THS4081ID | 175 MHz bandwidth, 350 V/µs slew rate, but higher 18 nV/√Hz noise and 10.5 mA supply current vs. THS4051IDG4's 8.5 mA. | Targeted at ultra-high-speed ADC drivers and optical receiver TIA stages; not optimized for video linearity metrics. | Choose THS4081ID when full-power bandwidth >12 MHz is required and power budget allows +2 mA/channel. |
Compared with THS4051IDG4, THS4031ID trades video-grade linearity for wider bandwidth and lower voltage noise, while THS4081ID prioritizes raw speed and slew rate at the expense of power efficiency and differential phase accuracy - making THS4051IDG4 the optimal choice for broadcast video and mixed-signal instrumentation where fidelity and efficiency coexist.
Availability
THS4051IDG4 is available at Aetrix Electronics and suitable for video signal distribution, high-speed data acquisition, laser diode modulation, and RF IF amplification requiring stable component supply across industrial temperature ranges.
Supply support for THS4051IDG4 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 connectivity technologies, with decades of expertise in high-performance op-amps and signal chain solutions.
The THS405x product line was engineered specifically for demanding analog signal conditioning in professional video, medical imaging, and communications infrastructure - balancing speed, linearity, and robustness in a single-supply or dual-supply configuration.
FAQ
What is the maximum capacitive load the THS4051IDG4 can drive without oscillation?
The THS4051IDG4 is internally compensated for unity-gain stability but requires external isolation when driving >10 pF capacitive loads. A minimum 20 Ω series resistor between the OUT pin and the load maintains phase margin and prevents high-frequency ringing. This is confirmed in the "Driving a Capacitive Load" section of the SLOS238D datasheet and validated across −40°C to +85°C operation for THS4051IDG4.
Does the THS4051IDG4 support single-supply operation?
Yes, the THS4051IDG4 operates from a single supply of 9 V to 32 V (VCC+ to VCC−), enabling use in portable and industrial systems without dual-rail generation. Input common-mode range extends to within 1.2 V of each rail at ±15 V supply, and output swing reaches ±3.5 V into 150 Ω with 5 V supply - verified in the Recommended Operating Conditions and Electrical Characteristics tables of the official TI datasheet.
What is the guaranteed settling time specification for THS4051IDG4 over its full temperature range?
The THS4051IDG4 guarantees 60 ns settling time to 0.1% for a 5-V step at ±15 V supply and 2-V step at ±5 V supply, across its full −40°C to +85°C operating range. This is explicitly stated in the "Dynamic Performance" table under "Settling time to 0.1%" for THS405xI devices, confirming consistency for the I-suffix grade used in THS4051IDG4.
How does the THS4051IDG4 achieve 0.01% differential gain in video applications?
The THS4051IDG4 achieves 0.01% differential gain through precision bipolar transistor matching and low-distortion output stage design, verified under NTSC 40 IRE modulation with ±100 IRE ramp at ±15 V and ±5 V supplies. This performance is measured and guaranteed in the "Noise/Distortion Performance" section of the datasheet and applies directly to THS4051IDG4's SOIC-D package configuration.
Is the THS4051IDG4 pin-compatible with other THS405x variants like THS4051CD or THS4051IDGN?
Yes, THS4051IDG4 shares identical pinout and electrical functionality with THS4051CD (commercial temp) and THS4051IDGN (MSOP), as confirmed by the "THS4051 D, DGN, AND JG PACKAGES (TOP VIEW)" diagram in the datasheet. All three use the same 1–8 pin numbering and terminal assignments - including NULL, IN−, IN+, VCC−, OUT, NC, VCC+, and NULL - ensuring drop-in replacement across temperature grades and packages.
THS4051IDG4 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:
- 1
- Output Type:
- -
- Slew Rate:
- 240V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 70 MHz
- Current - Input Bias:
- 2.5 µA
- Voltage - Input Offset:
- 2.5 mV
- Current - Supply:
- 8.5mA
- Current - Output / Channel:
- -
- 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
THS4051IDG4 FAQ
1.How can I place an order for THS4051IDG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for THS4051IDG4 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 THS4051IDG4 reliable?
The price and inventory of THS4051IDG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for THS4051IDG4 is usually 5 days.
3.What payment methods are accepted for THS4051IDG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for THS4051IDG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for THS4051IDG4?
THS4051IDG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your THS4051IDG4 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 THS4051IDG4?
For technical support, including THS4051IDG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your THS4051IDG4 requirements.
6.How does Aetrix verify that THS4051IDG4 is sourced from the original manufacturer or authorized distributors?
All THS4051IDG4 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 THS4051IDG4 meets industry standards.
7.What is the process for return or replacement of THS4051IDG4?
All THS4051IDG4 units undergo pre-shipment inspection (PSI). If there is an issue with THS4051IDG4, 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 THS4051IDG4 part is unused and in its original packaging.
Return procedure for THS4051IDG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
THS4051IDG4 Tags
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