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Texas Instruments OPA373AIDBVTG4
- Part No.:
- OPA373AIDBVTG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-6
- Datasheet:
-
OPA373AIDBVTG4.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,938
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Product details
Overview
OPA373AIDBVTG4 from Texas Instruments is a single-channel, rail-to-rail input/output CMOS operational amplifier with 6.5-MHz gain-bandwidth product, 585-µA quiescent current, and shutdown capability. It operates from 2.3 V to 5.5 V single supply and delivers rail-to-rail output swing within 25 mV of rails under light load - ideal for battery-powered sensor signal conditioning and portable data acquisition systems.
For engineers reviewing the OPA373AIDBVTG4 datasheet, OPA373AIDBVTG4 pinout, OPA373AIDBVTG4 application, or OPA373AIDBVTG4 equivalent, key selection criteria include its 10-pA max input bias current, 5-mV max offset voltage, 5-V/µs slew rate, shutdown control timing (12-µs turn-on), and guaranteed operation up to 125°C in the 6-pin SOT-23 package.
Technical Context
The OPA373AIDBVTG4 uses a complementary input stage (N- and P-channel differential pairs) enabling rail-to-rail input common-mode range extending 200 mV beyond both supply rails. Its class AB output stage supports rail-to-rail output swing down to 18 mV from rails at 100-kΩ load.
It features logic-controlled shutdown mode reducing quiescent current to <1 µA per amplifier, with defined enable thresholds: logic low ≤ (V−) + 0.8 V and logic high ≥ (V−) + 2 V. The device is unity-gain stable and specified across −40°C to +125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-bandwidth product | 6.5 MHz - supports stable closed-loop operation up to ~5 MHz at G = +2 with adequate phase margin |
| Slew rate | 5 V/µs - enables clean 1-MHz, 3-VPP small-signal amplification without distortion |
| Input bias current | 10 pA (max) - minimizes voltage error in high-impedance sensor interfaces (e.g., photodiode, pH electrode) |
| Input offset voltage | 5 mV (max) - ensures ≤0.1% gain error in 5-V full-scale unbuffered ADC driver applications |
| Supply voltage range | 2.3 V to 5.5 V - compatible with Li-ion, 3.3-V, and 5-V systems without level-shifting |
| Shutdown current | <1 µA - extends battery life in intermittent-sampling IoT nodes by >1000× vs active mode |
| Operating temperature | −40°C to +125°C - qualified for automotive cabin, industrial motor control, and outdoor sensor environments |
Pinout & Package
OPA373AIDBVTG4 is housed in a 6-pin SOT-23 (DBV) package measuring 2.90 mm × 1.60 mm × 1.45 mm, with exposed thermal pad connected to V− for improved thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT | Output | Amplified signal source; capable of sourcing/sinking ±20 mA; swings within 25 mV of rails into 5-kΩ load |
| 2 - V− | Negative supply | Reference for all internal circuitry; must be connected to system ground or negative rail; thermal pad tied here |
| 3 - +IN | Noninverting input | High-impedance node (10¹³ Ω || 6 pF); accepts signals from (V−) −0.2 V to (V+) + 0.2 V |
| 4 - −IN | Inverting input | High-impedance node; used in transimpedance, difference, and inverting configurations; matched to +IN |
| 5 - Enable | Shutdown control | Active-high logic input; pulls amplifier into standby when ≤ (V−) + 0.8 V; wakes in 12 µs when ≥ (V−) + 2 V |
| 6 - V+ | Positive supply | Power rail connection; supports 2.3–5.5 V; decoupling capacitor required within 1 cm for stability |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input common-mode range | Extends 200 mV beyond both supply rails - eliminates need for level-shifting in single-supply sensor front-ends |
| Shutdown mode with fast recovery | Reduces IQ to <1 µA and recovers in 12 µs - enables microsecond-level duty-cycled operation in ultra-low-power systems |
| Low input bias current (10 pA max) | Minimizes leakage-induced offset in high-Z networks - critical for precision thermistor, RTD, or capacitive sensing |
| Specified operation to 125°C | Guaranteed parametric performance across full automotive and industrial temperature range - no derating required |
| Unity-gain stable architecture | Drives capacitive loads up to 250 pF at G = +1 - simplifies layout in ADC buffer and filter applications without external compensation |
Applications
| Portable Medical Sensors | Battery-Powered Data Loggers |
|---|---|
Use Scenario: Amplifying low-level signals from wearable ECG electrodes with 3-V coin-cell supply. IC Role / Device Role / Timing Role: Single-supply instrumentation amplifier front-end with rail-to-rail input to maximize dynamic range. Use Value: 585-µA quiescent current and shutdown mode extend battery life to >1 year; 10-pA IB prevents electrode polarization error. |
Use Scenario: Conditioning thermistor and humidity sensor outputs in remote environmental monitoring nodes. IC Role / Device Role / Timing Role: Low-power signal conditioner driving SAR ADC inputs with minimal power overhead. Use Value: Rail-to-rail output ensures full 0–3.3-V ADC utilization; 5-mV max VOS avoids calibration in cost-sensitive designs. |
| Active Anti-Aliasing Filters | Industrial 4–20-mA Loop Receivers |
Use Scenario: Implementing 2nd-order Sallen-Key low-pass filter before 1-MSPS ADC in test equipment. IC Role / Device Role / Timing Role: Unity-gain stable op amp providing precise pole placement and low noise (<15 nV/√Hz). Use Value: 6.5-MHz GBW supports filter cutoffs up to 200 kHz with <0.1-dB passband ripple; 5-V/µs SR prevents slew-induced distortion. |
Use Scenario: Converting 4–20-mA loop current to 0.5–2.5-V signal for microcontroller ADC in PLC I/O modules. IC Role / Device Role / Timing Role: Precision current-to-voltage converter with low offset and drift over temperature. Use Value: 3-µV/°C max dVOS/dT ensures <1 LSB error over −40°C to +85°C in 12-bit systems; 125°C rating supports extended ambient operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA374AIDBVR | No shutdown pin; 5-pin SOT-23; identical GBW, SR, and supply range but lacks enable control | Suitable where continuous operation is required and board space is constrained (5-pin vs 6-pin) | Select when shutdown functionality is unnecessary and footprint minimization is critical |
| MCP6001T-E/OT | 1-MHz GBW, 100-µA IQ, no shutdown, 2.7–6.0-V supply; lower bandwidth but lower power | Better suited for sub-100-kHz sensor buffering where ultra-low IQ dominates design priority | Choose for multi-year battery life in static sensor nodes where speed is secondary to current draw |
Compared with OPA373AIDBVTG4, OPA374AIDBVR offers identical AC performance in a smaller 5-pin package but forfeits power management; MCP6001T-E/OT trades bandwidth and shutdown for 5.8× lower quiescent current, making it optimal only in low-frequency, ultra-low-power contexts.
Availability
OPA373AIDBVTG4 is available at Aetrix Electronics and suitable for portable medical sensors, battery-powered data loggers, active anti-aliasing filters, and industrial 4–20-mA loop receivers requiring stable component supply across automotive and industrial temperature ranges.
Supply support for OPA373AIDBVTG4 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 OPA373 family was designed specifically for low-power, rail-to-rail signal conditioning in portable and battery-operated systems - emphasizing speed-power efficiency, wide temperature operation, and robust input protection.
FAQ
What is the maximum operating temperature for OPA373AIDBVTG4?
The OPA373AIDBVTG4 is fully specified and guaranteed to operate from −40°C to +125°C. Its electrical characteristics-including offset voltage, gain-bandwidth, and quiescent current-are tested and validated across this full industrial and automotive temperature range, making it suitable for under-hood or factory-floor deployments without derating.
Does OPA373AIDBVTG4 require external compensation for unity-gain stability?
No, OPA373AIDBVTG4 is internally compensated and unity-gain stable. It drives pure capacitive loads up to 250 pF in G = +1 configuration without oscillation. For heavier loads (>250 pF) or higher gains, TI recommends verifying phase margin using the typical characteristics curves in the datasheet.
How does the shutdown feature of OPA373AIDBVTG4 behave during power-up?
OPA373AIDBVTG4 powers up enabled by default: the amplifier enters normal operation when V+ and V− are applied, regardless of Enable pin state. The Enable pin must be actively driven low (≤ (V−) + 0.8 V) to enter shutdown. This eliminates startup glitches in systems where Enable is left floating or pulled up after power-on.
Can OPA373AIDBVTG4 drive a 10-kΩ load rail-to-rail?
Yes - OPA373AIDBVTG4 delivers rail-to-rail output swing within 25 mV of both rails into a 10-kΩ load at room temperature. At 125°C, the worst-case swing degrades to within 125 mV of rails. For tighter swing requirements, reduce load to ≥50 kΩ or use feedback to maintain linearity.
Is the thermal pad on the OPA373AIDBVTG4 DBV package electrically connected?
Yes, the exposed thermal pad on the bottom of the OPA373AIDBVTG4 DBV package is internally connected to V−. It must be soldered to a PCB copper pour tied to the V− net to ensure proper thermal dissipation and electrical stability. Leaving it unconnected degrades thermal resistance by >100°C/W and may cause instability.
OPA373AIDBVTG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SOT-23-6
- 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:
- 5V/µs
- Gain Bandwidth Product:
- 6.5 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.5 pA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 585µA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 2.3 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
OPA373AIDBVTG4 FAQ
1.How can I place an order for OPA373AIDBVTG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA373AIDBVTG4 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 OPA373AIDBVTG4 reliable?
The price and inventory of OPA373AIDBVTG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA373AIDBVTG4 is usually 5 days.
3.What payment methods are accepted for OPA373AIDBVTG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA373AIDBVTG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA373AIDBVTG4?
OPA373AIDBVTG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA373AIDBVTG4 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 OPA373AIDBVTG4?
For technical support, including OPA373AIDBVTG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA373AIDBVTG4 requirements.
6.How does Aetrix verify that OPA373AIDBVTG4 is sourced from the original manufacturer or authorized distributors?
All OPA373AIDBVTG4 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 OPA373AIDBVTG4 meets industry standards.
7.What is the process for return or replacement of OPA373AIDBVTG4?
All OPA373AIDBVTG4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA373AIDBVTG4, 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 OPA373AIDBVTG4 part is unused and in its original packaging.
Return procedure for OPA373AIDBVTG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA373AIDBVTG4 Tags
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