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Texas Instruments OPA725AIDBVR
- Part No.:
- OPA725AIDBVR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
OPA725AIDBVR.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,379
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Product details
Overview
OPA725AIDBVR from Texas Instruments is a single, rail-to-rail output, 20MHz gain-bandwidth precision CMOS operational amplifier optimized for driving 16-bit ADCs such as the ADS8342. It delivers 30V/µs slew rate, 6nV/√Hz input voltage noise at 100kHz, 0.0003% THD+N at 1kHz, and operates from 4V to 12V supply with 5.5mA max quiescent current per channel. Its key application is high-fidelity signal buffering in optical networking transimpedance amplifiers and precision data acquisition systems.
For engineers reviewing the OPA725AIDBVR datasheet, OPA725AIDBVR pinout, OPA725AIDBVR application, or OPA725AIDBVR equivalent, this page provides verified specifications, SOT23-5 package details, real-world settling performance into ADC inputs, low-noise design guidance for photodiode interfaces, and validated alternative options for 16-bit analog front-end designs.
Technical Context
The OPA725AIDBVR 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 16-bit settling (450ns to 0.01%) without phase inversion, even when inputs exceed supply rails under current-limited conditions.
Input common-mode range extends from V− to (V+) − 2V, with CMRR > 94dB over most of that range. The device features ultra-low input bias current (<200pA), low 1/f noise (10µVPP, 0.1–10Hz), and excellent PSRR (>100dB at DC) - all specified across −40°C to +125°C.
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 peaking. |
| Slew Rate | 30V/µs - ensures full-scale 5V step settles in ≤450ns to 0.01%, critical for driving 250kSPS 16-bit ADCs like ADS8342. |
| Input Voltage Noise | 6nV/√Hz at 100kHz - minimizes noise gain amplification in high-CD photodiode transimpedance applications. |
| THD+N | 0.0003% at 1kHz - preserves signal fidelity in high-end audio and precision active filter stages. |
| Quiescent Current | 5.5mA max per amplifier - balances speed and power for portable instrumentation and battery-sensitive designs. |
| Rail-to-Rail Output | Swings to within 150mV of V+ and V− (RL ≥ 100kΩ) - maximizes dynamic range in single-supply 5V or dual ±5V systems. |
| Input Bias Current | <200pA - essential for high-impedance I/V conversion in optical monitoring and sensor front-ends. |
Pinout & Package
SOT23-5 package: compact 5-pin surface-mount outline with exposed pad option not specified; thermal resistance θJA = 200°C/W; RoHS-compliant NIPDAU lead finish; MSL Level-2-260°C-1 year.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | V− | Negative supply terminal - accepts ground or negative rail; common reference for input common-mode range. |
| 2 | −IN | Inverting input - high-impedance node for feedback networks; protected by ESD diodes clamped to rails. |
| 3 | OUT | Amplifier output - drives capacitive loads up to 20pF stably in unity-gain; supports 40mA output current. |
| 4 | V+ | Positive supply terminal - operates from 4V to 12V single or ±2V to ±6V dual supply. |
| 5 | +IN | Non-inverting input - CM range includes ground; no phase inversion beyond rails when current-limited. |
Key Features
| Feature | Design Value |
|---|---|
| Fast 16-bit settling time | 450ns to 0.01% for 5V step - matches acquisition window of 250kSPS 16-bit ADCs without dead-time penalty. |
| Rail-to-rail output with 150mV headroom | Maintains AOL > 110dB within 150mV of rails (RL ≥ 100kΩ) - preserves linearity across full output span. |
| Low 1/f noise (10µVPP, 0.1–10Hz) | Reduces drift-induced errors in DC-coupled integrators and precision sensor conditioning paths. |
| CMRR & PSRR > 94dB (DC) | Rejects supply ripple and common-mode interference in noisy industrial or mixed-signal PCB environments. |
| Stable in unity-gain configuration | No external compensation required - simplifies layout for buffer, active filter, and ADC driver applications. |
Applications
| Optical Networking Transimpedance Amplifier | A/D Converter Buffer |
|---|---|
Use Scenario: Monitoring optical power in ONET-compliant receivers using reverse-biased photodiodes with 5–10pF junction capacitance. IC Role / Device Role / Timing Role: Transimpedance amplifier converting photocurrent to voltage with 10MΩ gain and controlled bandwidth. Use Value: Ultra-low 200pA bias current prevents photodiode leakage error; 6nV/√Hz noise ensures SNR > 90dB at 100kHz. | Use Scenario: Driving the analog input of the ADS8342 16-bit, 250kSPS parallel-output ADC in data acquisition modules. IC Role / Device Role / Timing Role: High-speed buffer isolating ADC input capacitance and absorbing charge injection kickback. Use Value: 450ns 0.01% settling guarantees full 16-bit accuracy within 600ns acquisition window; rail-to-rail output maximizes ±2.5V input range utilization. |
| Active Filter (Butterworth Low-Pass) | Portable Audio Line Driver |
Use Scenario: Four-pole 50kHz Sallen-Key low-pass filter in precision measurement equipment requiring flat group delay. IC Role / Device Role / Timing Role: Dual-op-amp section (e.g., OPA2725) implementing unity-gain follower and gain stage in filter topology. Use Value: 20MHz GBW and 30V/µs slew rate maintain filter response integrity up to 10× cutoff; low THD+N avoids harmonic distortion in passband. | Use Scenario: Headphone driver or line-out stage in battery-powered audio recorders with 3.3V–5V supply constraints. IC Role / Device Role / Timing Role: Single-supply rail-to-rail output buffer delivering 2VRMS into 600Ω load. Use Value: 0.0003% THD+N at 1kHz preserves audio fidelity; 5.5mA IQ enables >10-hour runtime on coin-cell or Li-ion sources. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision, high-speed op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2725AIDGKR | Dual-channel version in MSOP-8; identical AC specs (20MHz GBW, 30V/µs), same 200pA IB and 6nV/√Hz noise. | Used where space-constrained dual-channel buffering or filtering is needed (e.g., differential ADC drivers). | Select when two matched amplifiers are required and board area permits MSOP-8 footprint. |
| OPA380AIDBVR | 100MHz GBW, FET-input, 5.5V supply only; higher 7nV/√Hz noise at 100kHz but superior transimpedance bandwidth for low-CD photodiodes. | Targeted at higher-speed optical sensing (≥10Mbps) where OPA725AIDBVR's 20MHz GBW limits bandwidth. | Choose for >50MHz transimpedance bandwidth needs; avoid if 4–12V supply flexibility or lowest 100kHz noise is critical. |
Compared with OPA2725AIDGKR, OPA725AIDBVR saves board space and cost in single-amplifier roles; compared with OPA380AIDBVR, it offers wider supply range and lower mid-frequency noise but trades off raw bandwidth - making it optimal for 16-bit ADC buffering and moderate-speed optical monitoring.
Availability
OPA725AIDBVR is available at Aetrix Electronics and suitable for optical transimpedance amplifiers, 16-bit ADC buffers, active filters, and portable audio line drivers requiring stable component supply, extended temperature operation (−40°C to +125°C), and SOT23-5 footprint compatibility.
Supply support for OPA725AIDBVR 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 company specializing in analog and embedded processing technologies, with leadership in precision amplifiers, data converters, and power management ICs.
The OPA725 series belongs to TI's precision high-speed op amp product line, designed specifically for demanding signal-chain applications including 16-bit data acquisition, optical sensing, and high-fidelity audio where low noise, fast settling, and rail-to-rail output are mandatory.
FAQ
What is the maximum operating supply voltage for OPA725AIDBVR?
The absolute maximum supply voltage for OPA725AIDBVR is +13.2V, but its specified operating range is 4V to 12V for single-supply use or ±2V to ±6V for dual-supply configurations. Operation above 12V or below 4V is outside guaranteed specifications and may degrade performance or reliability. The device remains functional up to 13.2V per Absolute Maximum Ratings, but OPA725AIDBVR must be operated within 4–12V for guaranteed 20MHz GBW, 30V/µs slew rate, and 0.0003% THD+N performance.
Does OPA725AIDBVR support rail-to-rail input?
No, OPA725AIDBVR does not support rail-to-rail input. Its input common-mode voltage range extends from V− to (V+) − 2V, meaning the inputs cannot swing within 2V of the positive rail. However, the output is rail-to-rail, swinging to within 150mV of both V+ and V− under light loads. This architecture allows robust operation in single-supply systems where the input signal stays ≥2V below V+, while still maximizing output dynamic range - a key design trade-off confirmed in the Electrical Characteristics table and Applications Information section of the OPA725AIDBVR datasheet.
Can OPA725AIDBVR drive capacitive loads, and what is the recommended compensation?
Yes, OPA725AIDBVR can drive capacitive loads up to 20pF stably in unity-gain configuration without external compensation. For larger loads, TI recommends inserting a 10Ω–20Ω series resistor inside the feedback loop (between output and inverting input) to reduce ringing while preserving DC accuracy. This technique is validated in Figure 3 of the OPA725AIDBVR datasheet and maintains stability even with 100pF loads when gain ≥ +5. The device's ability to drive capacitive loads is gain-dependent, with higher closed-loop gains improving phase margin.
What is the typical input bias current of OPA725AIDBVR, and why does it matter?
The typical input bias current of OPA725AIDBVR is 30pA, with a maximum of 200pA over temperature. This ultra-low value is critical in high-impedance applications such as photodiode transimpedance amplifiers and precision integrators, where even nanoamp-level bias currents introduce significant offset error or signal attenuation. In optical networking, for example, 200pA IB limits measurable photocurrent error to <0.2% for 100nA signals - a requirement explicitly cited in the OPA725AIDBVR Applications Information for ONET monitoring.
Is OPA725AIDBVR pin-compatible with other devices in the OPA725 family?
Yes, OPA725AIDBVR is pin-compatible with other single-channel variants in the OPA725 family that use the SOT23-5 package, including OPA725AIDBVT. All SOT23-5 versions share identical pinout (V−, −IN, OUT, V+, +IN), allowing drop-in replacement in existing layouts. However, it is not pin-compatible with SO-8 versions (e.g., OPA725AIDR) or shutdown variants (OPA726 series), which have different pin counts and functions - a distinction clearly shown in the Pin Configurations section of the OPA725AIDBVR datasheet.
OPA725AIDBVR 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
OPA725AIDBVR FAQ
1.How can I place an order for OPA725AIDBVR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA725AIDBVR 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 OPA725AIDBVR reliable?
The price and inventory of OPA725AIDBVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA725AIDBVR is usually 5 days.
3.What payment methods are accepted for OPA725AIDBVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA725AIDBVR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA725AIDBVR?
OPA725AIDBVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA725AIDBVR 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 OPA725AIDBVR?
For technical support, including OPA725AIDBVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA725AIDBVR requirements.
6.How does Aetrix verify that OPA725AIDBVR is sourced from the original manufacturer or authorized distributors?
All OPA725AIDBVR 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 OPA725AIDBVR meets industry standards.
7.What is the process for return or replacement of OPA725AIDBVR?
All OPA725AIDBVR units undergo pre-shipment inspection (PSI). If there is an issue with OPA725AIDBVR, 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 OPA725AIDBVR part is unused and in its original packaging.
Return procedure for OPA725AIDBVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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