My Inquiry
My Account
Texas Instruments OPA373AIDBVRG4
- Part No.:
- OPA373AIDBVRG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-6
- Datasheet:
-
OPA373AIDBVRG4.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,209
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
OPA373AIDBVRG4 from Texas Instruments is a single-channel, rail-to-rail input/output CMOS operational amplifier optimized for low-power, battery-operated systems. It delivers 6.5 MHz gain-bandwidth, 5 V/µs slew rate, and 585 µA quiescent current per amplifier while operating from 2.3 V to 5.5 V. Its shutdown feature reduces current to <1 µA, making it ideal for portable instrumentation and sensor signal conditioning.
For engineers reviewing the OPA373AIDBVRG4 datasheet, OPA373AIDBVRG4 pinout, OPA373AIDBVRG4 application, or OPA373AIDBVRG4 equivalent, key selection criteria include its 5 mV max input offset voltage, 10 pA max input bias current, rail-to-rail operation at 125°C, and verified performance in driving A/D converters and active filters under single-supply constraints.
Technical Context
The OPA373AIDBVRG4 employs a complementary N/P-channel input stage enabling rail-to-rail common-mode input range extending 200 mV beyond both supply rails. Its class AB output stage supports rail-to-rail swing within 18 mV of rails under light loads (100 kΩ) and maintains stability with capacitive loads up to 250 pF in unity-gain configuration.
It integrates logic-controlled shutdown with 3 µs turnoff and 12 µs turnon times, reducing quiescent current to <1 µA. The device is fully specified from –40°C to +125°C and supports single-supply operation down to 2.3 V, targeting space-constrained, thermally demanding embedded sensing nodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-bandwidth product | 6.5 MHz - enables stable unity-gain buffer and closed-loop amplification up to ~500 kHz with 10× gain |
| Slew rate | 5 V/µs - supports clean 1-Vpp signal reproduction up to ~800 kHz without distortion |
| Input offset voltage | 5 mV (max) - limits DC error to ≤0.1% of full-scale in 5-V systems with 10-kΩ feedback networks |
| Input bias current | 10 pA (max) - permits use with high-impedance sources (e.g., pH electrodes, photodiodes) without significant error |
| Supply voltage range | 2.3 V to 5.5 V - operates directly from single Li-ion cells or regulated 3.3-V/5-V rails without level shifting |
| Quiescent current | 585 µA (typ) - allows >1-year battery life in always-on sensor nodes powered by CR2032 coin cells |
| Shutdown current | <1 µA - enables ultra-low-power sleep modes in portable data loggers and wearables |
Pinout & Package
OPA373AIDBVRG4 is packaged in a 6-pin SOT-23 (DBV) with 2.90 mm × 1.60 mm body size and exposed thermal pad on underside (must be connected to V–).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Output | Amplified signal source capable of sourcing/sinking ±20 mA; swings within 18 mV of rails into 100-kΩ load |
| 2 (V–) | Negative supply | Ground reference or negative rail; must connect exposed thermal pad to this node for thermal integrity |
| 3 (+IN) | Noninverting input | High-impedance node (10¹³ Ω || 6 pF); accepts signals from –0.2 V to V+ + 0.2 V |
| 4 (–IN) | Inverting input | Differential input node; matched to +IN for precision closed-loop gain accuracy |
| 5 (Enable) | Shutdown control | Logic-compatible input: <(V–)+0.8 V disables amp; >(V–)+2 V enables; draws 0.2 µA max |
| 6 (V+) | Positive supply | Primary power rail; supports 2.3–5.5 V; decoupling capacitor required within 2 mm |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input range | Extends 200 mV beyond both supply rails, enabling direct interfacing with unbuffered sensors and DAC outputs |
| Low input bias current | 10 pA max ensures minimal loading error on high-Z sources like piezoelectric transducers and MEMS microphones |
| 125°C operation | Guaranteed performance in automotive engine compartments and industrial motor-control enclosures without derating |
| Stable with 250-pF load | Eliminates need for external isolation resistors in ADC driver applications, simplifying layout and reducing BOM count |
| Fast enable/disable | 12 µs turnon / 3 µs turnoff enables precise timing control in time-multiplexed sensor arrays |
Applications
| Portable Medical Sensors | Battery-Powered Data Loggers |
|---|---|
Use Scenario: Amplifying weak bio-potential signals (ECG, EMG) from dry electrodes in wearable patches. IC Role / Device Role / Timing Role: Precision front-end amplifier with rail-to-rail input to capture sub-mV signals referenced to battery ground. Use Value: 10 pA input bias current prevents electrode polarization drift; 585 µA IQ extends 2-week runtime on 120-mAh coin cell. | Use Scenario: Conditioning thermistor and humidity sensor outputs in field-deployed environmental monitors. IC Role / Device Role / Timing Role: Low-drift signal conditioner with shutdown mode synchronized to MCU wake cycles. Use Value: 5 mV max offset ensures ±0.5°C temperature accuracy; <1 µA shutdown current enables multi-year deployment. |
| Active Filter for Audio Front-End | ADC Driver for Precision SAR Converters |
Use Scenario: Implementing 2nd-order anti-aliasing filter before audio codec in Bluetooth earbuds. IC Role / Device Role / Timing Role: Unity-gain stable, low-noise op-amp providing 6.5-MHz bandwidth for wideband filtering. Use Value: 15 nV/√Hz input noise preserves SNR; rail-to-rail output drives codec inputs without level-shifting circuitry. | Use Scenario: Driving 16-bit SAR ADC inputs in portable test equipment with 0–5 V input range. IC Role / Device Role / Timing Role: Low-output-impedance buffer isolating ADC sample-and-hold from source impedance variations. Use Value: 220 Ω open-loop output impedance minimizes settling time; 1 µs 0.1% settling meets 1-MSPS sampling requirements. |
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; identical GBW, slew rate, and supply range; 5-pin SOT-23 package | Used where continuous operation is required and power cycling is handled externally | Select when system-level power management eliminates need for per-amplifier shutdown control |
| MCP6001T-E/OT | 1 MHz GBW, 0.6 V/µs slew rate, 100 µA IQ; no shutdown; 5-pin SOT-23 | Targeted at cost-sensitive, low-bandwidth applications like basic sensor buffering | Choose for sub-100-kHz signal paths where ultra-low power dominates over speed and precision |
Compared with OPA373AIDBVRG4, OPA374AIDBVR offers identical AC performance without shutdown capability-reducing complexity where always-on operation suffices-while MCP6001T-E/OT trades 85% bandwidth and 90% lower quiescent current for significantly reduced cost in non-critical signal chains.
Availability
OPA373AIDBVRG4 is available at Aetrix Electronics and suitable for portable medical sensors, battery-powered data loggers, active filters, and ADC driver applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for OPA373AIDBVRG4 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 personal electronics markets.
The OPAx373 family was designed specifically for low-power, high-precision signal conditioning in space-constrained, battery-operated systems requiring rail-to-rail operation and extended temperature support up to 125°C.
FAQ
What is the maximum operating temperature specification for the OPA373AIDBVRG4?
The OPA373AIDBVRG4 is fully specified from –40°C to +125°C ambient temperature. Its electrical characteristics-including offset voltage, gain-bandwidth, and quiescent current-are guaranteed across this full industrial temperature range, making it suitable for under-hood automotive and industrial motor-control applications where thermal stress is critical. This rating applies to the OPA373AIDBVRG4 device itself, not just the broader OPA373 family.
Does the OPA373AIDBVRG4 require external components for stable operation with capacitive loads?
The OPA373AIDBVRG4 is stable with pure capacitive loads up to 250 pF in unity-gain configuration without external compensation. For loads exceeding 250 pF-or when driving cables or ADC input capacitance in noisy environments-a small series resistor (10–20 Ω) between the OPA373AIDBVRG4 output and the load improves phase margin. This resistor is not mandatory for typical PCB traces but becomes necessary for longer interconnects or high-CL ADCs.
How does the shutdown function of the OPA373AIDBVRG4 interact with the enable pin voltage thresholds?
The OPA373AIDBVRG4 enable pin asserts shutdown when voltage falls below (V–) + 0.8 V and exits shutdown when voltage rises above (V–) + 2 V. This 1.2-V hysteresis prevents chatter during slow-rising control signals. During shutdown, quiescent current drops below 1 µA per amplifier, and the output enters high-impedance state. The OPA373AIDBVRG4 remains functional across its full 2.3–5.5 V supply range regardless of enable state.
Can the OPA373AIDBVRG4 operate from a 2.3-V supply while maintaining full rail-to-rail input and output swing?
Yes-the OPA373AIDBVRG4 is explicitly characterized down to 2.3 V supply voltage and retains rail-to-rail input (V– – 0.2 V to V+ + 0.2 V) and output (within 25 mV of rails at 125°C, 100-kΩ load) functionality across this entire range. At 2.3 V, its 6.5-MHz GBW and 5-V/µs slew rate remain valid, enabling precision signal conditioning in ultra-low-voltage energy-harvesting systems where the OPA373AIDBVRG4 delivers measurable performance advantage over higher-VCC-only op-amps.
What is the input common-mode voltage range limitation near the positive rail for the OPA373AIDBVRG4?
The OPA373AIDBVRG4 uses complementary N/P-channel input pairs, creating a 500-mV transition region near the positive rail (typically V+ − 1.9 V to V+ − 1.4 V) where both pairs are active. Within this zone, parameters including PSRR, CMRR, offset voltage, and THD may degrade. For highest precision, keep input signals outside this region-e.g., limit VCM to ≤ V+ − 2.0 V when using the OPA373AIDBVRG4 in high-accuracy instrumentation front-ends.
OPA373AIDBVRG4 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
OPA373AIDBVRG4 FAQ
1.How can I place an order for OPA373AIDBVRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA373AIDBVRG4 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 OPA373AIDBVRG4 reliable?
The price and inventory of OPA373AIDBVRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA373AIDBVRG4 is usually 5 days.
3.What payment methods are accepted for OPA373AIDBVRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA373AIDBVRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA373AIDBVRG4?
OPA373AIDBVRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA373AIDBVRG4 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 OPA373AIDBVRG4?
For technical support, including OPA373AIDBVRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA373AIDBVRG4 requirements.
6.How does Aetrix verify that OPA373AIDBVRG4 is sourced from the original manufacturer or authorized distributors?
All OPA373AIDBVRG4 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 OPA373AIDBVRG4 meets industry standards.
7.What is the process for return or replacement of OPA373AIDBVRG4?
All OPA373AIDBVRG4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA373AIDBVRG4, 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 OPA373AIDBVRG4 part is unused and in its original packaging.
Return procedure for OPA373AIDBVRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA373AIDBVRG4 Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
