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Texas Instruments OPA725AIDBVRG4
- Part No.:
- OPA725AIDBVRG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
OPA725AIDBVRG4.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,331
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Product details
Overview
OPA725AIDBVRG4 from Texas Instruments is a single, rail-to-rail output, high-speed CMOS operational amplifier optimized for precision 16-bit data acquisition systems. 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 with 5.5mA max quiescent current per channel - enabling high-fidelity buffering of ADC inputs in optical networking and test equipment.
For engineers reviewing the OPA725AIDBVRG4 datasheet, OPA725AIDBVRG4 pinout, OPA725AIDBVRG4 application, or OPA725AIDBVRG4 equivalent, key selection criteria include its 150mV rail-to-rail output swing under light load, −40°C to +125°C temperature rating, SOT23-5 package footprint, low 200pA max input bias current for transimpedance use, and verified 16-bit settling performance driving converters like the ADS8342.
Technical Context
The OPA725AIDBVRG4 employs a proprietary 12V analog CMOS process with a class AB output stage enabling rail-to-rail output swing within 150mV of rails at 100kΩ load while maintaining >110dB open-loop gain. Its input stage features FET-based architecture delivering <200pA input bias current and excellent CMRR (94dB typical) and PSRR (100dB typical), supporting stable operation in single-supply configurations down to 4V.
It achieves fast 16-bit settling (450ns at 0.01%) via high slew rate and wide bandwidth, with internal compensation ensuring unity-gain stability. The device includes ESD-protected inputs with diode clamping, supports input common-mode range extending to ground, and exhibits no phase inversion when inputs exceed supply rails under current-limited conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 20MHz - enables stable closed-loop operation up to 20MHz at unity gain for high-frequency signal conditioning. |
| Slew Rate | 30V/µs - supports full-scale step response without distortion in fast data acquisition and active filter applications. |
| Input Voltage Noise Density | 6nV/√Hz at 100kHz - critical for low-noise transimpedance amplifiers in optical power monitoring where photodiode capacitance elevates noise gain. |
| THD+N | 0.0003% at 1kHz - ensures minimal harmonic distortion in high-end audio and precision measurement front-ends. |
| Rail-to-Rail Output Swing | 150mV from rails (100kΩ load) - maximizes dynamic range in single-supply systems such as portable instrumentation and optical receivers. |
| Input Bias Current | 200pA max - allows accurate I/V conversion in photodiode circuits without significant DC error from leakage. |
| Supply Voltage Range | 4V to 12V (single) or ±2V to ±6V (dual) - provides flexibility across industrial, test, and communications power architectures. |
| Operating Temperature | −40°C to +125°C - qualified for under-hood automotive, industrial control, and base station environments. |
Pinout & Package
SOT23-5 package: 5-pin surface-mount, 2.9mm × 1.6mm footprint, thermal resistance θJA = 200°C/W, rated for −40°C to +125°C operation.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | V− | Negative supply terminal - connects to ground or negative rail; common reference for input common-mode range and output swing. |
| 2 | −IN | Inverting input - high-impedance FET node with <200pA bias current; used for feedback in inverting configurations and summing junctions. |
| 3 | OUT | Amplifier output - rail-to-rail capable, drives loads ≥100kΩ to within 150mV of V+ or V− while maintaining >110dB AOL. |
| 4 | V+ | Positive supply terminal - accepts 4V–12V single supply or +2V–+6V in dual-supply mode; bypassing required with 1nF + 1µF capacitors. |
| 5 | +IN | Non-inverting input - matched to −IN for low offset; supports common-mode input down to V− (ground-referenced signals). |
Key Features
| Feature | Design Value |
|---|---|
| Fast 16-bit settling time | 450ns at 0.01% - validated for driving 16-bit ADCs like ADS8342 within 600ns acquisition windows. |
| Low input voltage noise | 6nV/√Hz at 100kHz - minimizes noise amplification in high-gain transimpedance stages with photodiode capacitance. |
| Rail-to-rail output with ground-sensing input | Output swings to 150mV of rails; input CM range includes V− - enables true single-supply operation with grounded sensors. |
| High PSRR and CMRR | 100dB PSRR / 94dB CMRR typical - rejects supply ripple and common-mode interference in noisy industrial or communication environments. |
| No phase inversion on overvoltage | Inputs tolerate >300mV beyond supplies with current limiting - eliminates latch-up risk in transient-prone optical receiver front-ends. |
| Unity-gain stable | Internally compensated - eliminates need for external compensation components in buffer and gain-of-one configurations. |
Applications
| Optical Networking Transimpedance Amplifier | A/D Converter Buffer |
|---|---|
|
Use Scenario: Converting photocurrent from PIN photodiodes in ONET-compliant 2.5G/10G optical receivers. IC Role / Device Role / Timing Role: Precision transimpedance amplifier with low input bias current (<200pA) and low 100kHz noise (6nV/√Hz) to maximize SNR. Use Value: Enables detection of sub-nA photocurrents with minimal added noise, supporting high dynamic range and bit-error-rate compliance. |
Use Scenario: Driving the analog input of 16-bit SAR ADCs such as ADS8342 in automated test equipment. IC Role / Device Role / Timing Role: High-speed, low-distortion buffer providing fast 0.01% settling (450ns) and rail-to-rail output swing. Use Value: Ensures full 16-bit accuracy by eliminating aperture uncertainty and charge injection errors during ADC acquisition phase. |
| Active Filter for Communication Channels | Portable Audio Line Driver |
|
Use Scenario: Implementing 4-pole Butterworth low-pass filters in RF front-end IF stages and baseband signal conditioning. IC Role / Device Role / Timing Role: Unity-gain stable op amp with 20MHz GBW and 30V/µs slew rate for precise frequency shaping up to 50kHz. Use Value: Maintains amplitude flatness and phase linearity across audio and sub-MHz bands without peaking or group delay distortion. |
Use Scenario: Driving stereo headphone outputs or line-level signals in battery-powered audio DAC interfaces. IC Role / Device Role / Timing Role: Low-noise (6nV/√Hz), low-distortion (0.0003% THD+N) rail-to-rail output stage operating from +5V supply. Use Value: Delivers high-fidelity audio with extended battery life due to 5.5mA max quiescent current and efficient single-supply operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed, low-noise operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2725AIDR | Dual-channel version in SO-8 package; identical AC specs (20MHz GBW, 30V/µs, 6nV/√Hz), but higher quiescent current (5.5mA/ch) and larger footprint. | Used where space permits dual amplifiers (e.g., differential driver, dual-filter stage); not suitable for ultra-compact single-channel designs. | Select OPA2725AIDR only when dual functionality is required and SOT23-5 area constraints do not apply. |
| OPA380AIDBVR | Higher GBW (100MHz), FET input, but higher input voltage noise (7nV/√Hz at 100kHz) and narrower supply range (2.7V–5.5V). | Better suited for ultra-high-speed transimpedance applications (>50MHz bandwidth), but incompatible with 12V or ±6V systems. | Choose OPA380AIDBVR only for bandwidth-critical, low-voltage (<5.5V) designs where 100MHz GBW outweighs noise and supply limitations. |
Compared with OPA2725AIDR and OPA380AIDBVR, the OPA725AIDBVRG4 uniquely balances 20MHz bandwidth, 6nV/√Hz noise, 4V–12V operation, and SOT23-5 compactness - making it optimal for space-constrained, single-channel, wide-supply-range precision signal conditioning.
Availability
OPA725AIDBVRG4 is available at Aetrix Electronics and suitable for optical networking transceivers, high-resolution data acquisition systems, and portable instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for OPA725AIDBVRG4 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 precision op amps and signal chain solutions.
The OPA725AIDBVRG4 belongs to TI's high-speed, low-noise CMOS op amp product line, designed specifically for demanding applications including optical receivers, 16-bit data converters, and high-fidelity active filters.
FAQ
What is the maximum supply voltage for the OPA725AIDBVRG4?
The OPA725AIDBVRG4 has an absolute maximum supply voltage of +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 risks exceeding safe operating area limits and may degrade reliability or cause permanent damage, even if within absolute maximum ratings.
Does the OPA725AIDBVRG4 support rail-to-rail input?
No, the OPA725AIDBVRG4 does not support rail-to-rail input. Its input common-mode voltage range extends from V− to (V+) − 2V, meaning the upper limit is 2V below the positive rail. However, it does provide rail-to-rail output swing - within 150mV of both rails under light load - and includes ground-sensing capability (CM range includes V−).
Can the OPA725AIDBVRG4 drive heavy capacitive loads?
The OPA725AIDBVRG4 is unity-gain stable but exhibits increasing overshoot with capacitive loads >100pF. For loads >20pF, stability can be improved by adding a 10Ω–20Ω series resistor inside the feedback loop (between output and inverting input). This preserves DC accuracy while damping ringing, as confirmed in TI's SBOS278B datasheet Figure 3.
Is the OPA725AIDBVRG4 pin-compatible with other OPA725 variants?
Yes, all OPA725 variants (including OPA725AIDBVRG4, OPA725AIDBVT, and OPA725AIDR) share identical pinouts within their respective packages: the SOT23-5 versions (like OPA725AIDBVRG4) have consistent pin 1–5 assignments (V−, −IN, OUT, V+, +IN), and SO-8 versions use the same pin mapping. However, OPA725 and OPA726 (shutdown version) are not pin-compatible due to the added Enable and DGND pins.
What is the typical quiescent current of the OPA725AIDBVRG4 at +25°C?
The typical quiescent current of the OPA725AIDBVRG4 at +25°C is 4.3mA per amplifier, with a maximum of 5.5mA over the full −40°C to +125°C temperature range. This value is measured with zero output load and nominal supply voltage, and remains stable across the 4V–12V operating range as shown in the Typical Characteristics curve on page 8 of SBOS278B.
OPA725AIDBVRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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
OPA725AIDBVRG4 FAQ
1.How can I place an order for OPA725AIDBVRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA725AIDBVRG4 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 OPA725AIDBVRG4 reliable?
The price and inventory of OPA725AIDBVRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA725AIDBVRG4 is usually 5 days.
3.What payment methods are accepted for OPA725AIDBVRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA725AIDBVRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA725AIDBVRG4?
OPA725AIDBVRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA725AIDBVRG4 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 OPA725AIDBVRG4?
For technical support, including OPA725AIDBVRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA725AIDBVRG4 requirements.
6.How does Aetrix verify that OPA725AIDBVRG4 is sourced from the original manufacturer or authorized distributors?
All OPA725AIDBVRG4 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 OPA725AIDBVRG4 meets industry standards.
7.What is the process for return or replacement of OPA725AIDBVRG4?
All OPA725AIDBVRG4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA725AIDBVRG4, 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 OPA725AIDBVRG4 part is unused and in its original packaging.
Return procedure for OPA725AIDBVRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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