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Texas Instruments THS4215DRBT
- Part No.:
- THS4215DRBT
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-VDFN Exposed Pad
- Datasheet:
-
THS4215DRBT.pdf
- Description:
- IC VOLTAGE FEEDBACK 1 CIRC 8SON
- Quantity:
- Payment:
- Shipping:
Inventory:408
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Product details
Overview
THS4215DRBT from Texas Instruments is a low-distortion, high-speed voltage feedback amplifier with power-down capability, designed for ±5 V or single 5–15 V operation. It delivers 970 V/µs slew rate, 1 GHz small-signal bandwidth (G = 1), –90 dBc THD at 30 MHz (RL = 499 Ω), 0.007% differential gain, and 170 mA output drive - enabling high-fidelity signal conditioning in ADC preamplifier and video buffer applications.
For engineers reviewing the THS4215DRBT datasheet, THS4215DRBT pinout, THS4215DRBT application, or THS4215DRBT equivalent, key selection criteria include power-down quiescent current (≤1 mA), 8-pin QFN-PP package thermal performance (θJC = 5 °C/W), harmonic distortion vs. frequency behavior, and compatibility with ±5 V or 5 V single-supply video and data-acquisition signal chains.
Technical Context
The THS4215DRBT employs a unity-gain-stable voltage feedback architecture optimized for wideband AC performance. Its internal compensation enables stable operation at G ≥ 1 without external components, while the dedicated PD (power-down) pin provides fast enable/disable control with 4 µs turn-on and 3 µs turn-off delays.
It features rail-to-rail output swing capability (±3.6 V min at ±5 V supplies), high input impedance (6 GΩ typical in power-down mode), and low output impedance (0.3 Ω active, 75 kΩ in power-down), supporting driving of 150 Ω video loads and multi-load distribution without gain peaking or stability degradation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-signal bandwidth (G = 1) | 1 GHz - supports full-bandwidth signal acquisition up to UHF frequencies without attenuation. |
| Slew rate (G = 1) | 970 V/µs - preserves fast transient fidelity in pulse and video signals with minimal slew-induced distortion. |
| THD (30 MHz, VO = 1 VPP) | –90 dBc (RL = 499 Ω) - ensures <0.003% harmonic content critical for high-resolution ADC front ends. |
| Differential gain/phase | 0.007% / 0.003° - meets broadcast-grade NTSC/PAL video linearity requirements across multiple 150 Ω loads. |
| Power-down quiescent current | ≤900 µA (max at +85°C) - enables low-power standby in battery-backed or duty-cycled instrumentation systems. |
| Supply voltage range | ±2.5 V to ±7.5 V dual or 5 V to 15 V single - supports legacy ±5 V systems and modern low-voltage embedded designs. |
| Output drive (sourcing) | ≥180 mA (min at +85°C, RL = 10 Ω) - drives heavy capacitive or resistive loads without clipping or thermal shutdown. |
Pinout & Package
THS4215DRBT uses an 8-pin QFN package with PowerPAD™ (DRB suffix), thermally enhanced and electrically isolated. The exposed thermal pad must be soldered to a PCB copper plane for junction temperature control and reliable 2.18 W power dissipation at TA ≤ +25°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - NC | No connection | Unbonded die pad; must remain floating or grounded per layout guidelines to avoid parasitic coupling. |
| 2 - IN− | Inverting input | Differential input node; high-impedance (4 MΩ) with 0.2 pF differential capacitance for stable feedback network design. |
| 3 - IN+ | Non-inverting input | High-impedance input referenced to common-mode range (±3.6 V min at ±5 V); matched to IN− for CMRR > 48 dB. |
| 4 - VS− | Negative supply | Connects to ground (single supply) or negative rail; decoupling capacitor required within 1 cm for PSRR > 54 dB. |
| 5 - NC | No connection | Unbonded; no internal connection - leave unconnected or tie to ground only if recommended by TI layout guide. |
| 6 - VS+ | Positive supply | Accepts +5 V to +15 V or ±5 V; requires local 0.1 µF ceramic + 4.7 µF tantalum decoupling per supply pin. |
| 7 - VOUT | Amplified output | Capable of ±3.6 V swing into 499 Ω; low 0.3 Ω output impedance enables direct drive of 150 Ω video lines. |
| 8 - PD | Power-down control | Active-high logic input; drives device into low-current state when ≥ REF+1.0 V (REF = VS− or 0 V). |
Key Features
| Feature | Design Value |
|---|---|
| Unity-gain stability | Operates stably at G = 1 without external compensation, eliminating risk of oscillation in gain-of-one configurations. |
| Power-down functionality | Reduces quiescent current to <1 mA and raises output impedance to 75 kΩ, enabling seamless channel muting in multi-amplifier systems. |
| Low distortion at high frequency | –90 dBc HD2/HD3 at 30 MHz ensures minimal spectral regrowth in IF sampling and broadband communications paths. |
| Video-optimized linearity | 0.007% differential gain and 0.003° phase error maintain color fidelity across 8+ simultaneous 150 Ω video loads. |
| Thermally enhanced QFN | DRB package with PowerPAD achieves θJC = 5 °C/W, enabling 2.18 W dissipation without forced air in compact layouts. |
Applications
| High Linearity ADC Preamplifier | Differential to Single-Ended Conversion |
|---|---|
Use Scenario: Driving the input of a 14-bit, 100 MSPS analog-to-digital converter in a software-defined radio receiver chain. IC Role / Device Role / Timing Role: Low-noise, high-slew-rate buffer that maintains SNR and SFDR by minimizing harmonic and intermodulation distortion before digitization. Use Value: Achieves –90 dBc THD at 30 MHz and 32 dBm OIP3, preserving ENOB > 12.5 bits across DC–70 MHz input bandwidth. | Use Scenario: Converting the differential output of a high-speed DAC (e.g., DAC3482) to single-ended for legacy analog signal routing. IC Role / Device Role / Timing Role: Precision gain-of-two active balun with matched phase/gain response to suppress common-mode noise and preserve signal integrity. Use Value: Delivers 0.003° differential phase and 130-MHz 0.1-dB flat bandwidth, ensuring <0.1% amplitude/phase mismatch in I/Q signal paths. |
| DAC Output Buffer | Video Signal Distribution |
Use Scenario: Isolating and amplifying the output of a high-resolution video DAC (e.g., THS8135) in a broadcast-quality graphics controller. IC Role / Device Role / Timing Role: Unity-gain video driver with ultra-low group delay variation to prevent timing skew between RGB channels. Use Value: 0.007% differential gain and 22 ns 0.1% settling time ensure accurate color reproduction and sharp edge rendering in 1080p60 video. | Use Scenario: Distributing composite video (CVBS) or component YPbPr signals to multiple monitors or recording devices in medical imaging equipment. IC Role / Device Role / Timing Role: High-drive line driver capable of sourcing 170 mA into parallel 150 Ω loads without gain droop or overshoot. Use Value: Maintains <0.01% differential gain error across 8 loads and exhibits <0.005° phase shift over 0–10 MHz, preventing chroma misalignment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed voltage feedback amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| THS4211DRBT | Lacks power-down pin; identical AC/DC specs, same DRB package and pinout except PD pin is NC. | Not suitable where dynamic power gating or channel muting is required; otherwise drop-in for always-on designs. | Select THS4211DRBT when system-level power sequencing eliminates need for per-amplifier shutdown control. |
| LMH6629MA/NOPB | Higher 1.5 GHz GBW but lower 750 V/µs slew rate; no integrated power-down; SOIC-8 only (no QFN option). | Better for ultra-wideband small-signal gain stages; unsuitable for space-constrained or thermally demanding video PCBs. | Choose LMH6629MA/NOPB only when bandwidth >1.2 GHz is mandatory and thermal/power-down features are secondary. |
Compared with THS4211DRBT and LMH6629MA/NOPB, THS4215DRBT uniquely combines 1 GHz bandwidth, 970 V/µs slew rate, and integrated power-down in a thermally optimized QFN - making it optimal for portable test equipment and multi-channel video systems requiring both performance and dynamic power control.
Availability
THS4215DRBT is available at Aetrix Electronics and suitable for high-speed data acquisition, broadcast video infrastructure, and medical imaging systems requiring stable component supply, consistent parametric performance, and long-term production continuity.
Supply support for THS4215DRBT 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 amplifiers and precision signal-chain solutions.
The THS4215DRBT belongs to TI's THS42xx family of high-speed voltage feedback amplifiers, engineered specifically for demanding applications including video buffering, ADC/DAC interface, and wideband instrumentation where low distortion, fast settling, and thermal reliability are critical.
FAQ
What is the maximum operating supply voltage for THS4215DRBT?
The THS4215DRBT supports dual supplies up to ±7.5 V or single supply up to +15 V. Absolute maximum ratings specify ±8.25 V on VS+ and VS−, but recommended operation remains within ±7.5 V to ensure specified AC performance and long-term reliability. Exceeding ±7.5 V may degrade distortion and slew rate without violating absolute limits.
How does the power-down feature affect THS4215DRBT output impedance and signal path isolation?
In power-down mode, THS4215DRBT output impedance rises to 75 kΩ (typical), effectively isolating the output node from downstream circuitry. This prevents loading effects and crosstalk in multi-channel systems. The PD pin must be driven ≥ REF+1.0 V (with REF = VS− or 0 V) to activate; output resumes normal 0.3 Ω impedance within 4 µs after enable.
Can THS4215DRBT operate from a single +5 V supply, and what are the input/output voltage limitations?
Yes, THS4215DRBT operates from +5 V single supply. Input common-mode range is 1.2 V to 3.8 V (min), and output swing is 1.2 V to 3.8 V (min) into 499 Ω. For rail-to-rail input/output, external level-shifting or biasing is required. Performance metrics (e.g., –60 dBc THD at 30 MHz) are validated under these conditions per the datasheet.
What thermal design considerations apply to the THS4215DRBT's QFN-8-PP (DRB) package?
The THS4215DRBT's DRB package requires the exposed PowerPAD to be soldered to a minimum 200 mm² internal or external copper thermal plane, connected via ≥4 thermal vias (0.3 mm diameter) to inner ground layers. Without this, θJA degrades from 45.8 °C/W to >100 °C/W, risking junction temperatures >125 °C and accelerated distortion rise during sustained 200 mA output.
Is THS4215DRBT pin-compatible with THS4211DRBT, and what modifications are needed for substitution?
Yes, THS4215DRBT and THS4211DRBT share identical pinout and DRB package footprint. The only difference is Pin 8: THS4215DRBT uses it as PD (active-high), while THS4211DRBT leaves it as NC. To substitute THS4215DRBT for THS4211DRBT, tie Pin 8 to VS− (0 V) or leave floating; to substitute THS4211DRBT for THS4215DRBT, remove PD control logic and confirm system-level power management remains adequate.
THS4215DRBT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-VDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Voltage Feedback
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 970V/µs
- Gain Bandwidth Product:
- 350 MHz
- -3db Bandwidth:
- 325 MHz
- Current - Input Bias:
- 7 µA
- Voltage - Input Offset:
- 3 mV
- Current - Supply:
- 19mA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 5 V
- Voltage - Supply Span (Max):
- 15 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SON (3x3)
THS4215DRBT FAQ
1.How can I place an order for THS4215DRBT through Aetrix?
Please submit a Request for Quotation (RFQ) for THS4215DRBT 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 THS4215DRBT reliable?
The price and inventory of THS4215DRBT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for THS4215DRBT is usually 5 days.
3.What payment methods are accepted for THS4215DRBT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for THS4215DRBT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for THS4215DRBT?
THS4215DRBT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your THS4215DRBT 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 THS4215DRBT?
For technical support, including THS4215DRBT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your THS4215DRBT requirements.
6.How does Aetrix verify that THS4215DRBT is sourced from the original manufacturer or authorized distributors?
All THS4215DRBT 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 THS4215DRBT meets industry standards.
7.What is the process for return or replacement of THS4215DRBT?
All THS4215DRBT units undergo pre-shipment inspection (PSI). If there is an issue with THS4215DRBT, 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 THS4215DRBT part is unused and in its original packaging.
Return procedure for THS4215DRBT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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