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Texas Instruments OPA725AIDBVT
- Part No.:
- OPA725AIDBVT
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
OPA725AIDBVT.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:392
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Product details
Overview
OPA725AIDBVT from Texas Instruments is a single, rail-to-rail output, high-speed, low-noise CMOS operational amplifier optimized for 16-bit precision signal conditioning. It delivers 20MHz gain-bandwidth, 30V/µs slew rate, 6nV/√Hz input voltage noise at 100kHz, 0.0003% THD+N at 1kHz, and operates from 4V to 12V supply. It drives fast 16-bit ADCs like the ADS8342 in optical networking and test equipment.
For engineers reviewing the OPA725AIDBVT datasheet, OPA725AIDBVT pinout, OPA725AIDBVT application, or OPA725AIDBVT equivalent, key selection criteria include its 150mV rail-to-rail output swing (RL = 100kΩ), −40°C to +125°C temperature range, SOT23-5 package footprint, and verified transimpedance amplifier performance with photodiodes.
Technical Context
The OPA725AIDBVT uses a proprietary 12V analog CMOS process with a class AB output stage enabling rail-to-rail output swing within 150mV of rails under light loads. Its 20MHz GBW and 30V/µs slew rate support fast settling to 16-bit accuracy in <450ns (0.01%).
Input common-mode range extends from V− to (V+) − 2V, with CMRR ≥88dB over that range and excellent PSRR (≥100dB at DC). Bias current remains below 200pA, making it suitable for high-impedance transimpedance applications without significant error drift.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 20MHz - enables stable unity-gain operation and supports closed-loop bandwidth up to ~18MHz with minimal phase margin loss. |
| Slew Rate | 30V/µs - ensures full-scale 5V step settles in ≤450ns to 0.01%, critical for driving 16-bit ADC sample-and-hold inputs. |
| Input Voltage Noise | 6nV/√Hz at 100kHz - minimizes noise amplification in wideband transimpedance amplifiers where photodiode capacitance elevates effective noise gain. |
| THD+N | 0.0003% at 1kHz - preserves signal fidelity in high-end audio and precision active filter stages without harmonic corruption. |
| Output Swing | Within 150mV of rails (RL = 100kΩ) - maximizes dynamic range in single-supply systems such as portable instrumentation and optical receivers. |
| Supply Range | 4V to 12V (single) or ±2V to ±6V (dual) - supports flexible power architecture in industrial and telecom designs without level-shifting circuitry. |
| Quiescent Current | 5.5mA/ch max - balances speed and power efficiency for battery-sensitive portable audio and handheld test gear. |
Pinout & Package
OPA725AIDBVT is housed in a 5-pin SOT23-5 package (DBV), optimized for space-constrained PCB layouts. Pin 1 is V+, Pin 2 is −IN, Pin 3 is OUT, Pin 4 is V−, and Pin 5 is +IN. The package supports reflow soldering per JEDEC Level-2-260°C-1 year MSL rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Positive supply rail | Accepts 4V–12V single supply or +2V–+6V in dual-supply mode; bypassing with 1nF ceramic + 1µF tantalum required for stability. |
| −IN | Inverting input | High-impedance node (10¹¹ Ω || 4pF); accepts common-mode voltages from V− to (V+) − 2V; protected by ESD diodes. |
| OUT | Amplifier output | Rail-to-rail capable; drives ≥40mA; swings to within 150mV of V+ or V− with >100kΩ load while maintaining >110dB open-loop gain. |
| V− | Negative supply rail | Ground reference in single-supply use; supports −2V to −6V in dual mode; must be decoupled identically to V+. |
| +IN | Non-inverting input | Matches −IN in impedance and bias current (<200pA); enables true ground-referenced input operation when V− = GND. |
Key Features
| Feature | Design Value |
|---|---|
| 16-bit settling time | ≤450ns to 0.01% for 5V step - validated for direct interface with 250kSPS 16-bit ADCs like ADS8342 without external buffering. |
| Rail-to-rail output | 150mV rail margin at 100kΩ load - preserves >95% of full-scale dynamic range in 5V or 3.3V systems, reducing need for gain scaling. |
| Low input bias current | <200pA - eliminates significant offset error in high-Z transimpedance circuits (e.g., 10MΩ feedback with photodiodes). |
| CMRR/PSRR ≥88dB | Maintains accuracy in noisy industrial environments and mixed-signal boards where supply ripple or common-mode interference exceeds 1mV. |
| No phase inversion | Input overvoltage tolerance to ±0.5V beyond rails with current limiting - prevents latch-up or erroneous output reversal during transient input excursions. |
Applications
| Optical Networking Receiver | 16-Bit Data Acquisition System |
|---|---|
Use Scenario: Monitoring optical power in ONET-compliant transceivers using PIN photodiodes with 5–15pF junction capacitance. IC Role / Device Role / Timing Role: Transimpedance amplifier converting photocurrent to voltage with minimal added noise and no gain peaking. Use Value: 6nV/√Hz input voltage noise and <200pA bias current enable detection of sub-nA photocurrents while maintaining >70dB SNR at 100kHz bandwidth. | Use Scenario: Buffering analog inputs to 16-bit SAR ADCs (e.g., ADS8342) in automated test equipment with 600ns acquisition windows. IC Role / Device Role / Timing Role: High-fidelity driver isolating ADC input capacitance and absorbing charge injection kickback. Use Value: 450ns 0.01% settling guarantees full 16-bit accuracy within the ADC's acquisition time, eliminating post-conversion correction. |
| Portable High-Fidelity Audio | Industrial Process Control Loop |
Use Scenario: Line-level output stage in battery-powered DAC-based audio players requiring low distortion and extended battery life. IC Role / Device Role / Timing Role: Low-noise, low-THD buffer amplifying DAC output before headphone or line driver stage. Use Value: 0.0003% THD+N at 1kHz and 30V/µs slew rate preserve transient detail and stereo imaging without audible artifacts. | Use Scenario: Signal conditioning for 4–20mA loop receivers and sensor front-ends in PLC analog input modules operating across −40°C to +125°C. IC Role / Device Role / Timing Role: Precision gain stage and anti-alias filtering element in isolated analog signal chains. Use Value: Specified operation from −40°C to +125°C, 88dB CMRR, and 100dB PSRR ensure stable 16-bit measurement integrity despite thermal drift and supply noise. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed, low-noise op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2725AIDGKT | Dual-channel version in MSOP-8; identical AC specs (20MHz GBW, 30V/µs, 6nV/√Hz), same 4V–12V supply, but higher quiescent current (5.5mA/ch). | Used where two matched amplifiers are needed (e.g., differential driver, dual ADC channel), not for single-channel space-constrained designs. | Select OPA2725AIDGKT only when dual-channel functionality justifies larger footprint and higher total current draw. |
| OPA380AIDBVR | 100MHz GBW, FET-input, 5.5V supply max, 7nV/√Hz at 100kHz, but higher bias current (~3pA) and limited to −40°C to +125°C. | Better for ultra-wideband transimpedance (e.g., >10MHz photodiode amps), but incompatible with 12V supplies and less optimal for 16-bit ADC settling due to lower slew rate margin. | Choose OPA380AIDBVR only for bandwidth-critical I/V conversion where >50MHz closed-loop response is required and supply is ≤5.5V. |
Compared with OPA2725AIDGKT and OPA380AIDBVR, the OPA725AIDBVT uniquely combines SOT23-5 compactness, 12V supply compatibility, and verified 16-bit settling-making it the optimal choice for space-limited, single-channel, high-dynamic-range signal paths.
Availability
OPA725AIDBVT is available at Aetrix Electronics and suitable for optical networking receivers, 16-bit data acquisition systems, and portable high-fidelity audio requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for OPA725AIDBVT 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 delivering analog and embedded processing solutions for industrial, automotive, and communications markets.
The OPA725 series belongs to TI's precision high-speed op amp product line, engineered specifically for 16-bit signal chain integrity in demanding applications including optical sensing, test instrumentation, and high-resolution data conversion.
FAQ
What is the maximum supply voltage for OPA725AIDBVT?
The absolute maximum supply voltage for OPA725AIDBVT is +13.2V, but the recommended operating range is 4V to 12V for single-supply use or ±2V to ±6V for dual-supply configurations. Operation outside the 4V–12V range may degrade AC performance or reliability. The OPA725AIDBVT datasheet specifies all electrical characteristics within this range, and thermal derating begins above 12V.
Does OPA725AIDBVT support rail-to-rail input?
No, OPA725AIDBVT does not support rail-to-rail input. Its input common-mode voltage range is specified from V− to (V+) − 2V. While the output swings rail-to-rail (within 150mV), the input cannot accept signals within 2V of V+. This limitation is intentional to maintain high CMRR and low distortion; for true rail-to-rail input, consider TI's OPA333 or OPA376 families instead.
Can OPA725AIDBVT drive capacitive loads directly?
OPA725AIDBVT can drive moderate capacitive loads (≤20pF) stably in unity-gain configuration, as confirmed by the datasheet's typical characteristics. For larger loads (>50pF), a 10Ω–20Ω series resistor inside the feedback loop (between output and inverting input) is recommended to suppress ringing while preserving DC accuracy. Stability is gain-dependent: higher closed-loop gains improve capacitive load tolerance.
Is OPA725AIDBVT suitable for transimpedance amplifier designs?
Yes, OPA725AIDBVT is explicitly validated for transimpedance amplifier use in optical networking. Its <200pA input bias current, 6nV/√Hz voltage noise at 100kHz, 20MHz GBW, and lack of phase inversion make it ideal for photodiode current-to-voltage conversion. TI Application Bulletin SBOA055 provides design guidelines, and Figure 5 in the OPA725AIDBVT datasheet shows a working dual-supply implementation with 10MΩ feedback.
What is the thermal resistance (θJA) of the OPA725AIDBVT package?
The OPA725AIDBVT uses a SOT23-5 (DBV) package with a junction-to-ambient thermal resistance (θJA) of 200°C/W, as specified in the Electrical Characteristics table on page 5 of the datasheet. This value assumes standard JEDEC 2-layer board conditions. Layout improvements (e.g., copper pour under exposed pad, multiple vias) can reduce effective θJA, but the rated 200°C/W must be used for worst-case junction temperature calculations.
OPA725AIDBVT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 30V/µs
- Gain Bandwidth Product:
- 20 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 30 pA
- Voltage - Input Offset:
- 1.2 mV
- Current - Supply:
- 4.3mA
- Current - Output / Channel:
- 40 mA
- Voltage - Supply Span (Min):
- 4 V
- Voltage - Supply Span (Max):
- 12 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
OPA725AIDBVT FAQ
1.How can I place an order for OPA725AIDBVT through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA725AIDBVT 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 OPA725AIDBVT reliable?
The price and inventory of OPA725AIDBVT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA725AIDBVT is usually 5 days.
3.What payment methods are accepted for OPA725AIDBVT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA725AIDBVT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA725AIDBVT?
OPA725AIDBVT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA725AIDBVT 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 OPA725AIDBVT?
For technical support, including OPA725AIDBVT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA725AIDBVT requirements.
6.How does Aetrix verify that OPA725AIDBVT is sourced from the original manufacturer or authorized distributors?
All OPA725AIDBVT 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 OPA725AIDBVT meets industry standards.
7.What is the process for return or replacement of OPA725AIDBVT?
All OPA725AIDBVT units undergo pre-shipment inspection (PSI). If there is an issue with OPA725AIDBVT, 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 OPA725AIDBVT part is unused and in its original packaging.
Return procedure for OPA725AIDBVT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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