My Inquiry
My Account
Texas Instruments OPA322SAIDBVR
- Part No.:
- OPA322SAIDBVR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-6
- Datasheet:
-
OPA322SAIDBVR.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,122
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
OPA322SAIDBVR from Texas Instruments is a single-channel, rail-to-rail input/output CMOS operational amplifier optimized for low-power, single-supply signal conditioning. It delivers 20 MHz gain bandwidth, 10 V/μs slew rate, and 8.5 nV/√Hz input voltage noise at 1 kHz - enabling high-fidelity audio amplification and precision sensor interfacing in battery-powered systems.
For engineers reviewing the OPA322SAIDBVR datasheet, OPA322SAIDBVR pinout, OPA322SAIDBVR application, or OPA322SAIDBVR equivalent, key selection criteria include shutdown current (0.1 µA), offset voltage (≤2 mV), supply range (1.8–5.5 V), and SOT-23-6 package compatibility with space-constrained PCB layouts.
Technical Context
The OPA322SAIDBVR implements a zero-crossover rail-to-rail input stage to eliminate distortion near supply rails, paired with a unity-gain-stable CMOS output stage capable of driving 10 kΩ loads while maintaining <0.0005% THD+N at 10 kHz. Its low 1.5 mA quiescent current per channel supports always-on sensing nodes.
Internal biasing enables fast enable/disable timing: 10 µs enable time (full shutdown) and 3 µs disable time, with SHDN pin logic thresholds referenced to supply rails (VIH ≥ V+ – 0.1 V, VIL ≤ V– + 0.1 V). The device operates across –40°C to +125°C with guaranteed performance over full temperature and supply range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 20 MHz - supports stable closed-loop gain up to G = 100 at 200 kHz without peaking. |
| Slew Rate | 10 V/μs - enables clean 2-V step response in ≤0.32 μs (0.01% settling) for fast transient signals. |
| Input Voltage Noise | 8.5 nV/√Hz @ 1 kHz - preserves SNR in low-level sensor outputs (e.g., thermopiles, bridge sensors). |
| Offset Voltage | ≤2 mV max - reduces DC error in precision instrumentation amplifiers and multi-pole active filters. |
| Supply Current | 1.5 mA/ch @ 5.5 V - allows dual-channel operation from coin-cell batteries for >1-year runtime in portable devices. |
| Shutdown Current | 0.1 µA/ch - extends battery life during idle periods in wearable health monitors and IoT edge nodes. |
| Common-Mode Range | Rail-to-rail (V– – 0.1 V to V+ + 0.1 V) - accepts inputs beyond supply rails for robust interface with ADC drivers and level-shifted signals. |
Pinout & Package
OPA322SAIDBVR is housed in a 6-pin SOT-23 (DBV) package measuring 2.90 mm × 1.60 mm, with exposed thermal pad on underside connected to V– for improved power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +IN | Noninverting input | High-impedance CMOS node (±0.2 pA bias current) accepting rail-to-rail common-mode signals. |
| –IN | Inverting input | Differential input terminal; matched to +IN for <2 mV offset and >130 dB channel separation at 1 kHz. |
| VOUT | Amplifier output | Capable of ±65 mA short-circuit current and 20-mV swing from rails into 10 kΩ load. |
| V– | Negative supply | Reference for internal biasing and thermal pad connection; must be tied to lowest system potential. |
| V+ | Positive supply | Accepts 1.8–5.5 V single supply; powers all internal circuitry including shutdown control logic. |
| SHDN | Shutdown control (active low) | Drives amplifier into standby when pulled ≤ V– + 0.1 V; draws only 0.04 µA at VIL = 0 V. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-crossover RRI/O architecture | Eliminates crossover distortion in Class-AB output stage, enabling clean audio reproduction down to 0 V output. |
| Low THD+N (0.0005%) | Meets consumer audio line-driver requirements at 10 kHz, 4 VPP into 10 kΩ load without external compensation. |
| Wide supply range (1.8–5.5 V) | Supports direct interface with Li-ion, alkaline, and USB-powered systems without LDO regulation. |
| Fast enable/disable timing | 10 µs enable and 3 µs disable allow dynamic power cycling in burst-mode data acquisition systems. |
| High open-loop gain (100 dB) | Ensures <0.01% gain error in precision transimpedance amplifiers with 1 MΩ feedback resistors. |
Applications
| Portable Audio DAC Output Stage | Medical ECG Front-End Amplifier |
|---|---|
Use Scenario: Driving headphone loads from a 3.3-V powered DAC in Bluetooth earbuds. IC Role / Device Role / Timing Role: Single-supply, rail-to-rail output buffer with low THD+N and 10-V/μs slew rate to preserve transient fidelity. Use Value: Delivers 0.0005% THD+N at 10 kHz into 10 kΩ, eliminating need for external passive filtering or dual-supply generation. |
Use Scenario: Amplifying microvolt-level biopotential signals from dry electrodes in ambulatory ECG patches. IC Role / Device Role / Timing Role: Low-noise (8.5 nV/√Hz), low-input-bias (±0.2 pA) instrumentation amplifier front-end stage. Use Value: Enables sub-1 µV RMS noise floor in 0.05–150 Hz band without compromising DC accuracy due to ≤2 mV offset. |
| Industrial Temperature Sensor Interface | Multi-Pole Active Filter for Vibration Monitoring |
Use Scenario: Conditioning output of PT100 RTD bridges in programmable logic controller (PLC) analog input modules. IC Role / Device Role / Timing Role: Precision, rail-to-rail input op-amp with 1.8-V minimum supply for wide-range industrial temperature measurement. Use Value: Operates from 1.8 V to 5.5 V, allowing direct use with 2.5-V or 3.3-V ADC references and reducing system BOM count. |
Use Scenario: Implementing 4th-order Butterworth anti-aliasing filter before sigma-delta ADC in predictive maintenance sensors. IC Role / Device Role / Timing Role: Unity-gain-stable, 20-MHz GBW amplifier enabling sharp roll-off at 80 kHz with minimal phase shift. Use Value: Achieves <–80 dB stopband attenuation at 2× Nyquist frequency while maintaining group delay flatness within ±1 ns. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA320SAIDBVR | Lower noise (7 nV/√Hz), lower IQ (1.2 mA), but no shutdown pin; 5-pin SOT-23 package. | Lacks active power management - unsuitable for duty-cycled sensor nodes requiring <1 µA standby. | Select when ultra-low noise dominates over shutdown capability and board space permits re-layout for 5-pin footprint. |
| MCP6001T-E/OT | Higher offset (4.5 mV max), lower GBW (1 MHz), no shutdown, but AEC-Q100 qualified and lower cost. | Not suitable for audio or high-speed filtering; limited to basic sensor buffering in automotive body electronics. | Choose for cost-sensitive, non-audio industrial controls where 1-MHz bandwidth and ±4.5-mV offset are acceptable. |
Compared with OPA322SAIDBVR, OPA320SAIDBVR trades shutdown functionality for marginally better noise and efficiency, while MCP6001T-E/OT offers automotive qualification at the expense of bandwidth, noise, and precision - making OPA322SAIDBVR optimal for battery-powered, high-fidelity signal chains requiring dynamic power control.
Availability
OPA322SAIDBVR is available at Aetrix Electronics and suitable for portable audio systems, medical biosensors, industrial temperature monitoring, and vibration analysis equipment requiring stable component supply and long-term manufacturability.
Supply support for OPA322SAIDBVR 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 OPAx322x family was designed for low-power, single-supply signal conditioning in portable and battery-operated systems - emphasizing rail-to-rail operation, low noise, and integrated shutdown without sacrificing speed or precision.
FAQ
What is the maximum capacitive load the OPA322SAIDBVR can drive without instability?
The OPA322SAIDBVR is specified to drive up to 50 pF capacitive load with stable unity-gain operation (47° phase margin). For loads >50 pF, external isolation resistor (e.g., 10–50 Ω in series with output) is required to maintain stability - verified in Figure 16 of the SBOS538F datasheet. Larger loads induce overshoot and ringing, degrading settling time in precision ADC driver applications.
Does the OPA322SAIDBVR support true rail-to-rail input when powered from 1.8 V?
Yes - the OPA322SAIDBVR maintains rail-to-rail input common-mode range from (V–) – 0.1 V to (V+) + 0.1 V across its full 1.8–5.5 V supply range. At 1.8 V, this means inputs function from –0.1 V to +1.9 V, enabling direct interface with 0–1.8 V sensors and ADC references without level-shifting circuitry.
How does the shutdown feature affect output state in the OPA322SAIDBVR?
When SHDN is pulled low (≤ V– + 0.1 V), the OPA322SAIDBVR output enters high-impedance (Hi-Z) state - not tri-state, but effectively disconnected from internal circuitry. This prevents loading downstream stages during sleep mode. Output resumes normal operation within 10 µs after SHDN returns high, with no latch-up or startup overshoot observed in Figure 24.
Can the OPA322SAIDBVR be used in single-supply photodiode transimpedance configurations?
Yes - its 0.2 pA typical input bias current, 8.5 nV/√Hz noise, and rail-to-rail input make it well-suited for photodiode TIA designs. However, the lack of dedicated photodiode bias pin requires external bias network (e.g., resistor divider to mid-supply). For best results, use with low-leakage PCB layout and guard rings to preserve sub-picoamp sensitivity.
What is the thermal resistance (RθJA) of the OPA322SAIDBVR in its SOT-23-6 package?
The OPA322SAIDBVR in DBV (SOT-23-6) package has a junction-to-ambient thermal resistance (RθJA) of 177.5°C/W under standard JEDEC test conditions (2s2p board). With proper copper pour and thermal vias to inner ground planes, actual board-level RθJA can improve to ~85°C/W - sufficient for 1.5 mA operation up to +85°C ambient without derating.
OPA322SAIDBVR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 10V/µs
- Gain Bandwidth Product:
- 20 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.2 pA
- Voltage - Input Offset:
- 500 µV
- Current - Supply:
- 1.6mA
- Current - Output / Channel:
- 65 mA
- Voltage - Supply Span (Min):
- 1.8 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
OPA322SAIDBVR FAQ
1.How can I place an order for OPA322SAIDBVR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA322SAIDBVR 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 OPA322SAIDBVR reliable?
The price and inventory of OPA322SAIDBVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA322SAIDBVR is usually 5 days.
3.What payment methods are accepted for OPA322SAIDBVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA322SAIDBVR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA322SAIDBVR?
OPA322SAIDBVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA322SAIDBVR 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 OPA322SAIDBVR?
For technical support, including OPA322SAIDBVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA322SAIDBVR requirements.
6.How does Aetrix verify that OPA322SAIDBVR is sourced from the original manufacturer or authorized distributors?
All OPA322SAIDBVR 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 OPA322SAIDBVR meets industry standards.
7.What is the process for return or replacement of OPA322SAIDBVR?
All OPA322SAIDBVR units undergo pre-shipment inspection (PSI). If there is an issue with OPA322SAIDBVR, 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 OPA322SAIDBVR part is unused and in its original packaging.
Return procedure for OPA322SAIDBVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA322SAIDBVR 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…
