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Texas Instruments THS4215DR
- Part No.:
- THS4215DR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
THS4215DR.pdf
- Description:
- IC VOLTAGE FEEDBACK 1 CIRC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,119
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Product details
Overview
THS4215DR 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 supply operation. It delivers 970 V/µs slew rate, 1 GHz small-signal bandwidth (±5 V), –90 dBc THD at 30 MHz (G = 1), 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 THS4215DR datasheet, THS4215DR pinout, THS4215DR application, or THS4215DR equivalent, key selection criteria include power-down timing (tON = 4 µs, tOFF = 3 µs), harmonic distortion vs. frequency performance, SOIC-8 package thermal dissipation (θJA = 97.5°C/W), and compatibility with ±5 V / 5 V supply rails in high-speed analog front-ends.
Technical Context
The THS4215DR employs a unity-gain stable voltage feedback architecture optimized for wideband AC performance. Its internal compensation enables stable operation at G = 1 while maintaining 1 GHz small-signal bandwidth and 970 V/µs slew rate under ±5 V supplies.
Power-down functionality is implemented via a dedicated PD pin with TTL-compatible thresholds (enable: REF+1.8 V min; disable: REF–1.5 V max), allowing rapid quiescent current reduction from 24 mA to ≤900 µA while preserving high-impedance output state (250 kΩ typical) during sleep mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-signal bandwidth | 1 GHz at ±5 V supply - supports full-bandwidth signal acquisition up to UHF frequencies without gain peaking. |
| Slew rate | 970 V/µs at G = 1, ±5 V - enables clean reproduction of fast transient signals (e.g., video sync pulses, radar IF bursts). |
| THD @ 30 MHz | –90 dBc (RL = 499 Ω, VO = 1 VPP) - ensures minimal spectral contamination in high-frequency communication and instrumentation chains. |
| Differential gain/phase | 0.007% / 0.003° at G = 2 - meets broadcast-grade NTSC/PAL video fidelity requirements for composite or component video buffering. |
| Output drive | 170 mA sink / 220 mA source (RL = 10 Ω) - drives heavy capacitive loads or multiple downstream inputs without external buffers. |
| Power-down current | ≤900 µA max at +85°C - reduces system standby power in portable or energy-sensitive instrumentation. |
| Input voltage noise | 7 nV/√Hz at 1 MHz - preserves SNR in low-level signal amplification stages preceding high-resolution ADCs. |
Pinout & Package
THS4215DR is housed in an 8-pin SOIC package (D suffix) with exposed pad not electrically connected. Thermal management requires PCB copper pour connection to ground or thermal plane per TI SLMA002 guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 NC | No connection | Unused pin; must remain unconnected per datasheet Note A. |
| 2 IN– | Inverting input | Differential input node for feedback network connection; high impedance (4 MΩ) and low capacitance (0.2 pF). |
| 3 IN+ | Non-inverting input | High-impedance signal input node; common-mode range extends to VS– +1.2 V and VS+ –1.2 V. |
| 4 VS– | Negative supply rail | Connect to ground (single-supply) or negative rail (dual-supply); decoupling capacitor required. |
| 5 NC | No connection | Unused pin; must remain unconnected. |
| 6 VS+ | Positive supply rail | Accepts 5–15 V (single) or ±2.5–±7.5 V (dual); PSRR > 64 dB suppresses supply noise. |
| 7 VOUT | Amplified output | Capable of ±4.0 V swing into 499 Ω; output impedance < 0.3 Ω at DC, rising to 250 kΩ in power-down mode. |
| 8 PD | Power-down control | TTL-compatible enable pin; asserts low-power state when driven below REF–1.5 V (REF = VS+ or floating). |
Key Features
| Feature | Design Value |
|---|---|
| Unity-gain stability | Guaranteed stable at G = 1 without external compensation - eliminates risk of oscillation in wideband gain-of-one configurations. |
| Power-down function | Reduces quiescent current to ≤900 µA while maintaining high-Z output - enables dynamic power gating in multi-channel systems. |
| Low harmonic distortion | –90 dBc 2nd/3rd HD at 30 MHz (G = 1) - minimizes intermodulation products in RF sampling and IF chain applications. |
| Video-optimized performance | 0.007% differential gain error and 0.003° phase error - satisfies SMPTE 253M and ITU-R BT.601 broadcast video linearity specs. |
| Wide supply range | Operates from +5 V to +15 V (single) or ±2.5 V to ±7.5 V (dual) - simplifies integration across mixed-voltage system architectures. |
Applications
| High Linearity ADC Preamplifier | Differential to Single-Ended Conversion |
|---|---|
Use Scenario: Conditioning low-amplitude sensor outputs (e.g., piezoelectric, photodiode) before digitization by 14-bit+ SAR or pipeline ADCs. IC Role / Device Role / Timing Role: High-speed, low-noise gain stage with precise DC accuracy and minimal settling time (22 ns to 0.1%). Use Value: Preserves ENOB by limiting THD to –90 dBc at 30 MHz and input-referred noise to 7 nV/√Hz, directly improving effective resolution. | Use Scenario: Converting differential DAC outputs (e.g., from high-speed video DACs or RF DACs) to single-ended signals for legacy analog interfaces. IC Role / Device Role / Timing Role: Precision active balun with matched gain and phase response across 130 MHz (0.1 dB flatness). Use Value: Achieves 0.003° differential phase error, preventing color shift in video systems and image distortion in medical ultrasound beamforming. |
| DAC Output Buffer | Active Filtering |
Use Scenario: Driving 75 Ω coaxial video lines or 150 Ω ADC input networks from high-speed DACs operating at >50 MSPS. IC Role / Device Role / Timing Role: High-current output driver with ±4.0 V swing and 170 mA sink capability, supporting fast edge rates. Use Value: Delivers full 2 VPP signal into 150 Ω load at 30 MHz with –82 dBc 3rd-harmonic distortion, ensuring clean spectral purity. | Use Scenario: Implementing 5th-order anti-aliasing or reconstruction filters in data acquisition systems requiring >100 MHz passband. IC Role / Device Role / Timing Role: Low-distortion, high-slew-rate op-amp in MFB or Sallen-Key topologies with G = 2 configuration. Use Value: Maintains 130 MHz 0.1-dB bandwidth and –90 dBc THD at filter cutoff, preventing passband ripple and harmonic folding artifacts. |
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 |
|---|---|---|---|
| THS4211DR | No power-down pin; identical AC/DC specs and pinout except PD pin repurposed as NC. | Lacks dynamic power gating; suitable only for always-on signal paths. | Select THS4211DR when power-down functionality is unnecessary and board layout re-use is prioritized. |
| LMH6629MF/NOPB | Higher 1.5 GHz bandwidth but higher 10.5 nV/√Hz input noise; no integrated power-down. | Better suited for ultra-wideband RF IF amplification where noise floor dominates over power budget. | Choose LMH6629MF/NOPB when >1 GHz bandwidth is critical and system-level power management is handled externally. |
Compared with THS4211DR and LMH6629MF/NOPB, THS4215DR uniquely combines 1 GHz bandwidth, –90 dBc THD at 30 MHz, and sub-µA power-down current - making it optimal for battery-aware test equipment and portable high-fidelity signal generators where both speed and dynamic power control are mandatory.
Availability
THS4215DR is available at Aetrix Electronics and suitable for high-speed data acquisition, broadcast video infrastructure, and portable instrumentation requiring stable component supply across extended temperature ranges (–40°C to +85°C) and long production lifecycles.
Supply support for THS4215DR 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 50 years of innovation in high-performance analog ICs.
The THS4215DR belongs to TI's precision high-speed amplifier product line, engineered specifically for applications demanding simultaneous wide bandwidth, ultra-low distortion, and dynamic power control in compact SOIC packaging.
FAQ
What is the maximum supply voltage rating for THS4215DR?
The THS4215DR has an absolute maximum supply voltage rating of 16.5 V across VS+ and VS– terminals. Operation beyond this limit risks permanent damage. For reliable long-term use, TI specifies a maximum recommended operating voltage of ±7.5 V (dual) or +15 V (single). The device achieves optimal distortion and bandwidth performance within ±5 V or +5 V to +12 V ranges, as validated in the SLOS400E datasheet.
How does the power-down feature of THS4215DR affect output state?
When the PD pin is asserted (driven below REF–1.5 V), THS4215DR enters power-down mode with quiescent current reduced to ≤900 µA and output impedance increased to 250 kΩ - placing the VOUT terminal in a high-impedance state. This prevents loading of downstream circuitry during sleep, unlike rail-to-rail output clamping. The output remains at its last valid voltage level until power-down is released, with turn-on delay of 4 µs to full operational current.
Can THS4215DR be used with single-supply 5 V operation?
Yes, THS4215DR supports single-supply operation from 5 V to 15 V. At +5 V supply, it delivers 980 MHz small-signal bandwidth, 800 V/µs slew rate, and –60 dBc THD at 30 MHz (G = 1, RL = 499 Ω). Input common-mode range is 1.2 V to 3.8 V, requiring proper biasing of IN+ and IN– nodes (e.g., VCM = 2.5 V) to maintain linear operation and avoid clipping.
What is the thermal resistance (θJA) of THS4215DR in SOIC-8 package?
The THS4215DR in SOIC-8 (D) package has a junction-to-ambient thermal resistance (θJA) of 97.5°C/W when mounted on a JEDEC-standard High-K test PCB. To maintain junction temperature ≤125°C for long-term reliability and distortion performance, PCB layout must include adequate copper pour connected to the exposed pad (if present) and thermal vias to inner ground planes - per TI technical brief SLMA002.
Does THS4215DR require external compensation for unity-gain stability?
No, THS4215DR is internally compensated for unity-gain stability. It operates stably at G = 1 without external components, delivering 1 GHz bandwidth and 970 V/µs slew rate under ±5 V supplies. This eliminates design risk associated with decompensated amplifiers and avoids the need for external feedback capacitors or resistor networks to ensure phase margin - simplifying layout and reducing bill-of-materials cost.
THS4215DR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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-SOIC
THS4215DR FAQ
1.How can I place an order for THS4215DR through Aetrix?
Please submit a Request for Quotation (RFQ) for THS4215DR 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 THS4215DR reliable?
The price and inventory of THS4215DR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for THS4215DR is usually 5 days.
3.What payment methods are accepted for THS4215DR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for THS4215DR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for THS4215DR?
THS4215DR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your THS4215DR 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 THS4215DR?
For technical support, including THS4215DR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your THS4215DR requirements.
6.How does Aetrix verify that THS4215DR is sourced from the original manufacturer or authorized distributors?
All THS4215DR 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 THS4215DR meets industry standards.
7.What is the process for return or replacement of THS4215DR?
All THS4215DR units undergo pre-shipment inspection (PSI). If there is an issue with THS4215DR, 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 THS4215DR part is unused and in its original packaging.
Return procedure for THS4215DR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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