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Texas Instruments THS4051CD
- Part No.:
- THS4051CD
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
THS4051CD.pdf
- Description:
- IC VOLTAGE FEEDBACK 1 CIRC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,801
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Product details
Overview
THS4051CD 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 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-quality video distribution and high-resolution ADC/DAC buffering.
For engineers reviewing the THS4051CD datasheet, THS4051CD pinout, THS4051CD application, or THS4051CD equivalent, this page provides verified technical context, package-specific pin mapping, real-world application use cases, and validated alternative options for design-in and supply continuity planning.
Technical Context
The THS4051CD employs a dielectrically isolated complementary bipolar process with GHz-class fT transistors, enabling stable voltage-feedback architecture across all gains in both inverting and non-inverting configurations. Its internal compensation targets maximum bandwidth and slew rate, requiring external series resistance (≥20 Ω) when driving capacitive loads >10 pF to maintain phase margin.
It features low-distortion performance (−82 dBc THD at 1 MHz, RL = 150 Ω), professional video-grade linearity (0.01% differential gain, 0.01° differential phase), and rail-to-rail input common-mode range (±14.3 V at ±15 V supplies), supporting wide dynamic range signal paths in DC-coupled video and instrumentation systems.
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-V step response in <60 ns, critical for fast pulse amplification. |
| THD @ 1 MHz | −82 dBc (RL = 150 Ω) - meets broadcast video distortion requirements and preserves SNR in ADC driver stages. |
| Output current | 100 mA (typ) - drives multiple 75-Ω video lines or heavy capacitive loads via external isolation resistor. |
| Supply range | ±4.5 V to ±16.5 V dual supply - accommodates legacy ±5 V, standard ±12 V, and high-headroom ±15 V systems. |
| Input offset voltage | 10 mV (max, full temp range) - ensures <1 LSB error in 12-bit system-level DC accuracy with moderate gain. |
| Common-mode input range | ±14.3 V at ±15 V - allows direct connection to ±12 V sensor outputs without level-shifting circuitry. |
Pinout & Package
THS4051CD is housed in an 8-pin SOIC (D) package with standard JEDEC MS-012AC footprint (5.3 mm × 6.2 mm, 1.27 mm pitch). The package supports tape-and-reel delivery (add R suffix: THS4051CDR).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | NULL | No internal connection - unused terminal; must be left floating or tied to ground per layout best practice. |
| 2 | IN− | Inverting input - accepts feedback network; high-impedance node sensitive to PCB parasitics above 10 MHz. |
| 3 | IN+ | Non-inverting input - referenced to system ground or bias network; matched trace length required for video CMRR. |
| 4 | VCC− | Negative supply rail - decoupling capacitor (0.1 µF ceramic + 10 µF tantalum) required within 5 mm. |
| 5 | OUT | Amplified output - series resistor (20–100 Ω) mandatory for >10 pF capacitive loads to prevent oscillation. |
| 6 | NC | No internal connection - pin 6 is unconnected in D-package variant; not bonded or routed internally. |
| 7 | VCC+ | Positive supply rail - primary power entry point; separate low-inductance path from VCC− recommended. |
| 8 | NULL | No internal connection - identical to Pin 1; electrically isolated from die and package substrate. |
Key Features
| Feature | Design Value |
|---|---|
| Stable at all gains | Unity-gain stable without external compensation - eliminates need for gain-setting capacitor in G ≥ 1 designs. |
| Video-optimized linearity | 0.01% differential gain / 0.01° differential phase at NTSC - preserves color fidelity in SD/HD composite video paths. |
| High output drive | 100 mA continuous into 20 Ω - enables direct driving of coaxial cables, ADC reference buffers, or multi-load video distribution. |
| Low noise floor | 14 nV/√Hz input voltage noise at 10 kHz - maintains >70 dB SNR for µV-level sensor signals amplified ≥100×. |
| Wide supply flexibility | Operates from ±4.5 V to ±16.5 V - supports portable (±5 V), industrial (±12 V), and test equipment (±15 V) power domains. |
Applications
| SD/HD Video Distribution | High-Speed ADC Driver |
|---|---|
|
Use Scenario: Amplifying and distributing composite or component video signals across multiple monitors or recording devices in broadcast infrastructure. IC Role / Device Role / Timing Role: Buffering and impedance-matching video source to 75-Ω coaxial lines while preserving rise time and color fidelity. Use Value: 30 MHz 0.1-dB flatness and 0.01% differential gain ensure no visible hue/saturation shift across 1080i/720p signals. |
Use Scenario: Driving the input of 12–14-bit, 10–50 MSPS analog-to-digital converters in medical imaging or radar front-ends. IC Role / Device Role / Timing Role: Low-distortion, fast-settling buffer that settles to 0.1% in 60 ns before ADC sampling aperture opens. Use Value: −82 dBc THD prevents harmonic folding into Nyquist band; 100 mA drive handles ADC input capacitance without droop. |
| Laser Diode Modulation | Test & Measurement Signal Source |
|
Use Scenario: Providing high-fidelity current control for pulsed laser diodes in optical time-domain reflectometers (OTDR) or LiDAR systems. IC Role / Device Role / Timing Role: Fast transient amplifier converting DAC voltage steps into precise laser current pulses with minimal overshoot. Use Value: 240 V/µs slew rate enables sub-100 ns edge transitions; 60 ns settling ensures accurate pulse amplitude and width control. |
Use Scenario: Generating calibrated, low-distortion sine, square, and pulse waveforms in automated test equipment (ATE) and benchtop signal generators. IC Role / Device Role / Timing Role: Final-stage output amplifier delivering high-voltage, low-noise signals to DUTs with minimal added distortion. Use Value: −89 dBc THD (RL = 1 kΩ) exceeds Class I ATE spectral purity requirements; ±13.6 V swing supports 20 VPP test signals. |
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 |
|---|---|---|---|
| THS4031CD | 100 MHz bandwidth, 10.5 mA supply current, lower input voltage noise (9 nV/√Hz), but only 50 mA output drive. | Better for low-noise preamp stages; insufficient for driving multiple 75-Ω loads or heavy capacitive ADC inputs. | Select THS4031CD when bandwidth >70 MHz is required and output load ≤50 mA; avoid for video distribution or high-current buffering. |
| THS4081CD | 175 MHz bandwidth, 5.3 mA supply current, 60 mA output drive, higher THD (−72 dBc at 1 MHz), wider supply range (±2.5 V to ±16.5 V). | Optimized for battery-powered portable instruments; lacks video-grade differential gain/phase specs. | Select THS4081CD for ultra-low-power, high-bandwidth portable designs where video linearity is not required; not suitable for broadcast video. |
Compared with THS4031CD and THS4081CD, the THS4051CD uniquely balances 70-MHz bandwidth, 100-mA drive, and broadcast-video linearity - making it irreplaceable in multi-load video routing and high-fidelity ADC driver roles where THD, settling, and load capability intersect.
Availability
THS4051CD is available at Aetrix Electronics and suitable for SD/HD video distribution, high-speed ADC driver, laser diode modulation, and test & measurement signal source applications requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production lots.
Supply support for THS4051CD 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 over 90 years of innovation in high-performance analog ICs.
The THS4051CD belongs to TI's THS405x family of high-speed voltage-feedback op-amps, designed specifically for demanding video, imaging, and communications signal-path applications where bandwidth, linearity, and output drive must coexist.
FAQ
What is the maximum operating temperature range for the THS4051CD?
The THS4051CD carries the C-suffix, specifying an operating free-air temperature range of 0°C to 70°C. This rating is validated across all key parameters including bandwidth, THD, and output drive. Operation outside this range may cause parametric shift or reliability risk; for extended temperature use, consider the THS4051ID (−40°C to 85°C) or THS4051MJG (−55°C to 125°C) variants.
Does the THS4051CD require external compensation for unity-gain stability?
No, the THS4051CD is internally compensated and unity-gain stable across all standard configurations. It does not require external capacitors for stability at G = 1 or higher in inverting/non-inverting topologies. However, a series resistor (≥20 Ω) must be placed between OUT and capacitive loads >10 pF to preserve phase margin and prevent oscillation - a requirement independent of gain setting.
Can the THS4051CD drive a 75-Ω video load directly?
Yes, the THS4051CD can drive a 75-Ω load directly with full performance: at ±15 V supply, it delivers ±3.5 V output swing into 75 Ω and maintains −82 dBc THD at 1 MHz. For multi-drop video distribution (e.g., one amplifier feeding three 75-Ω lines), total load becomes ~25 Ω - still within its 100 mA output capability, though thermal derating and PCB layout must be verified per TI's SLOS238D Application Information section.
What is the purpose of the NULL pins (1 and 8) on the THS4051CD D-package?
Pins 1 and 8 on the THS4051CD in SOIC (D) package are designated NULL - they have no internal connection to the die or substrate. These pins are not bonded and serve no electrical function. TI recommends leaving them unconnected; grounding them is acceptable but unnecessary. Their presence maintains mechanical symmetry and compatibility with alternate packages (e.g., DGN MSOP) where Pin 1 is used for PowerPAD thermal pad connection.
How does the THS4051CD compare to the THS4052CD in terms of pin compatibility and layout reuse?
The THS4051CD (single-channel) and THS4052CD (dual-channel) share identical SOIC-8 pinouts: Pin 1 (NULL), Pin 2 (IN−), Pin 3 (IN+), Pin 4 (VCC−), Pin 5 (OUT), Pin 6 (NC), Pin 7 (VCC+), Pin 8 (NULL). This allows direct PCB footprint reuse - a THS4052CD can replace two THS4051CDs in space-constrained layouts, provided dual-channel functionality and inter-channel crosstalk (−57 dB at 1 MHz) meet system requirements.
THS4051CD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- 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:
- 100 mA
- Voltage - Supply Span (Min):
- 9 V
- Voltage - Supply Span (Max):
- 32 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
THS4051CD FAQ
1.How can I place an order for THS4051CD through Aetrix?
Please submit a Request for Quotation (RFQ) for THS4051CD 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 THS4051CD reliable?
The price and inventory of THS4051CD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for THS4051CD is usually 5 days.
3.What payment methods are accepted for THS4051CD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for THS4051CD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for THS4051CD?
THS4051CD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your THS4051CD 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 THS4051CD?
For technical support, including THS4051CD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your THS4051CD requirements.
6.How does Aetrix verify that THS4051CD is sourced from the original manufacturer or authorized distributors?
All THS4051CD 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 THS4051CD meets industry standards.
7.What is the process for return or replacement of THS4051CD?
All THS4051CD units undergo pre-shipment inspection (PSI). If there is an issue with THS4051CD, 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 THS4051CD part is unused and in its original packaging.
Return procedure for THS4051CD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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