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Texas Instruments OPA2322AIDRGR
- Part No.:
- OPA2322AIDRGR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
OPA2322AIDRGR.pdf
- Description:
- IC CMOS 2 CIRCUIT 8SON
- Quantity:
- Payment:
- Shipping:
Inventory:3,245
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Product details
Overview
OPA2322AIDRGR from Texas Instruments is a dual-channel, rail-to-rail input/output CMOS operational amplifier optimized for low-noise, low-power, single-supply signal conditioning. It delivers 20 MHz gain bandwidth, 8.5 nV/√Hz input voltage noise at 1 kHz, 10 V/μs slew rate, 1.5 mA per channel quiescent current, and operates from 1.8 V to 5.5 V supply. It is used in precision sensor front-ends and consumer audio line drivers where distortion and power efficiency are critical.
For engineers reviewing the OPA2322AIDRGR datasheet, OPA2322AIDRGR pinout, OPA2322AIDRGR application, or OPA2322AIDRGR equivalent, key selection considerations include its rail-to-rail I/O swing (±10 mV from rails), shutdown capability (0.1 μA/ch), 2 mV max offset voltage, and VSSOP-8 package compatibility with space-constrained industrial and portable designs.
Technical Context
The OPA2322AIDRGR implements a zero-crossover rail-to-rail input stage that eliminates crossover distortion during common-mode transitions near supply rails. Its CMOS input architecture achieves ultra-low input bias current (±0.2 pA typ) and high open-loop gain (130 dB), enabling stable high-gain configurations without external compensation.
It supports dual independent shutdown control (SHDN_A/SHDN_B, active-low), with fast enable/disable times (6–10 μs / 3 μs) and full shutdown current of 0.1 μA per channel. The device is unity-gain stable and drives capacitive loads up to 50 pF while maintaining phase margin ≥47°.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth | 20 MHz - enables stable closed-loop operation up to 10× gain at 2 MHz or unity gain at 20 MHz. |
| Slew Rate | 10 V/μs - supports clean 2-V step response in ≤0.32 μs (0.01% settling), suitable for audio and fast-sensing applications. |
| Input Voltage Noise | 8.5 nV/√Hz at 1 kHz - ensures minimal added noise in low-level sensor amplification (e.g., thermopile, strain gauge). |
| Offset Voltage | 2 mV (max) - allows DC-coupled signal chains with <0.2% error at 1 V output, no external nulling required in many cases. |
| Supply Current | 1.5 mA per channel (typ) - enables dual-amplifier operation on 3.3 V supply with <5 mW total dissipation. |
| THD+N | 0.0005% at 10 kHz - meets high-fidelity audio requirements for line-out and headphone driver stages. |
| Rail-to-Rail I/O | Output swings within 10 mV of both rails (RL = 10 kΩ) - maximizes dynamic range in 1.8–5.5 V single-supply systems. |
Pinout & Package
OPA2322AIDRGR is housed in an 8-pin VSSOP (DGK) package measuring 3.00 mm × 3.00 mm with exposed thermal pad (connected to V–). This thermally enhanced, surface-mount package supports high-density PCB layouts and improved power dissipation in compact industrial modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Positive power supply | Highest potential rail; accepts 1.8–5.5 V; decoupling capacitor required near pin. |
| OUT A | Channel A output | Amplified buffered output; capable of ±65 mA short-circuit current; rail-to-rail swing. |
| –IN A | Inverting input, Channel A | Differential input node; CMOS input impedance >10¹² Ω; biased at mid-supply in typical AC-coupled configs. |
| +IN A | Noninverting input, Channel A | Differential input node; matched to –IN A for optimal CMRR (>90 dB); zero-crossover stage eliminates distortion near rails. |
| V– | Negative power supply | Lowest potential rail (often GND in single-supply); thermal pad must be soldered to PCB ground plane. |
| +IN B | Noninverting input, Channel B | Independent second channel input; electrically isolated from Channel A except via shared supply and substrate. |
| –IN B | Inverting input, Channel B | Second differential pair input; identical specs to Channel A; supports dual-sensor or stereo signal paths. |
| OUT B | Channel B output | Second independent output; same drive strength and noise performance as OUT A; no crosstalk penalty below 130 dB at 1 kHz. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-crossover RRI/O stage | Eliminates distortion artifacts during input common-mode transitions across rail boundaries-critical for true single-supply sensor interfaces. |
| Ultra-low input bias current | ±0.2 pA typical enables high-impedance source interfacing (e.g., pH electrodes, piezoelectric sensors) without significant DC error. |
| Independent dual shutdown | SHDN_A and SHDN_B pins allow selective channel disablement-reducing system power by 50% when only one amplifier is active. |
| High PSRR & CMRR | 50 μV/V PSR and 100 dB CMRR minimize sensitivity to supply ripple and common-mode interference in noisy industrial environments. |
| Unity-gain stability | Operates stably with no external compensation at G = +1, simplifying design of buffers, active filters, and gain stages. |
Applications
| Sensor Signal Conditioning | Consumer Audio Line Driver |
|---|---|
|
Use Scenario: Amplifying low-level output from MEMS accelerometers or RTD bridges in battery-powered IoT nodes. IC Role / Device Role / Timing Role: Precision DC-coupled instrumentation amplifier front-end with rail-to-rail input to capture full sensor range at 1.8 V supply. Use Value: 8.5 nV/√Hz noise and 2 mV max offset preserve microvolt-level resolution; 1.5 mA/ch enables multi-sensor operation within 10 mA system budget. |
Use Scenario: Driving line-level outputs in portable Bluetooth speakers and smart displays powered from 3.3 V LDOs. IC Role / Device Role / Timing Role: Low-distortion, unity-gain buffer with THD+N = 0.0005% ensuring clean analog audio path before DAC or codec interface. Use Value: Rail-to-rail output swing maximizes 3.3 V headroom; shutdown mode cuts idle current to 0.1 μA/ch during standby-extending battery life. |
| Multi-Pole Active Filter | Control-Loop Amplifier |
|
Use Scenario: Implementing 4th-order anti-aliasing or reconstruction filters in data acquisition systems with 1 MSPS ADCs. IC Role / Device Role / Timing Role: High-speed, low-noise op-amp in Sallen-Key or MFB topologies requiring >10 MHz GBW and low phase shift. Use Value: 20 MHz GBW and 10 V/μs slew rate support filter cutoffs up to 200 kHz with minimal group delay distortion; unity-gain stable out-of-box. |
Use Scenario: Closed-loop error amplification in DC-DC converter feedback networks or motor current sensing circuits. IC Role / Device Role / Timing Role: High-precision comparator replacement or integrator in PID controllers demanding low offset drift and wide bandwidth. Use Value: 1.8 μV/°C dVOS/dT and 130 dB open-loop gain ensure stable regulation across –40°C to +125°C; rail-to-rail output interfaces directly with PWM comparators. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel, low-noise, rail-to-rail op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2320AIDRGR | Lower input voltage noise (7 nV/√Hz), higher quiescent current (1.75 mA/ch), no shutdown function. | Better suited for ultra-low-noise sensor amps where power is secondary; unsuitable where dynamic power gating is required. | Select OPA2320AIDRGR only if noise is primary constraint and shutdown is unnecessary. |
| MCP6V82-E/MS | Zero-drift architecture (0.01 μV/°C offset drift), lower offset (15 μV max), but lower GBW (10 MHz) and higher supply current (1.9 mA/ch). | Ideal for precision DC measurement (e.g., weigh scales, medical sensors) where long-term offset stability outweighs speed. | Choose MCP6V82-E/MS when sub-μV offset drift over temperature is mandatory, not just low initial offset. |
Compared with OPA2322AIDRGR, OPA2320AIDRGR trades shutdown capability for marginally better noise, while MCP6V82-E/MS sacrifices bandwidth and power for zero-drift precision-making OPA2322AIDRGR the balanced choice for mixed-signal systems needing speed, noise, and power control in one dual op-amp.
Availability
OPA2322AIDRGR is available at Aetrix Electronics and suitable for sensor signal conditioning, consumer audio line drivers, multi-pole active filters, and control-loop amplifiers requiring stable component supply across industrial, automotive, and portable electronics programs.
Supply support for OPA2322AIDRGR 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 amplifiers and signal chain solutions.
The OPAx322x family-including OPA2322AIDRGR-is designed for low-power, single-supply applications demanding high fidelity, low noise, and rail-to-rail operation in space- and energy-constrained systems like wearables, industrial sensors, and portable audio.
FAQ
What is the maximum operating temperature range for the OPA2322AIDRGR?
The OPA2322AIDRGR is specified for continuous operation from –40°C to +125°C ambient temperature. This extended industrial temperature range ensures reliable performance in harsh environments such as motor control enclosures, automotive under-hood modules, and outdoor industrial sensors-without derating or thermal shutdown.
Does the OPA2322AIDRGR require external compensation for unity-gain stability?
No, the OPA2322AIDRGR is internally compensated and unity-gain stable. It maintains ≥47° phase margin driving a 50 pF load at 5 V supply, eliminating the need for external compensation components in standard gain-of-one buffer or inverting amplifier configurations-reducing BOM count and layout complexity.
How does the shutdown feature work on the OPA2322AIDRGR?
The OPA2322AIDRGR features two independent active-low shutdown pins: SHDN_A (pin 5) and SHDN_B (pin 6). Pulling either pin to V– disables its respective amplifier channel, reducing quiescent current to 0.1 μA per disabled channel. Both channels can be shut down simultaneously for ultra-low standby power.
Can the OPA2322AIDRGR drive a 600-Ω load at audio frequencies?
Yes-the OPA2322AIDRGR delivers 0.0011% THD+N into a 600-Ω load at 10 kHz with 2 VPP output, meeting professional audio line-driver requirements. Its 65 mA short-circuit current and rail-to-rail output swing ensure robust drive capability without clipping or distortion in low-impedance consumer audio interfaces.
What is the input common-mode voltage range of the OPA2322AIDRGR?
The OPA2322AIDRGR supports a rail-to-rail input common-mode range from (V–) – 0.1 V to (V+) + 0.1 V. This extends beyond the supply rails, allowing direct interfacing with overvoltage-tolerant sensors or level-shifted signals-enabling true single-supply operation without external biasing networks.
OPA2322AIDRGR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- CMOS
- Number of Circuits:
- 2
- 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 (x2 Channels)
- 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:
- 8-SON (3x3)
OPA2322AIDRGR FAQ
1.How can I place an order for OPA2322AIDRGR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2322AIDRGR 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 OPA2322AIDRGR reliable?
The price and inventory of OPA2322AIDRGR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2322AIDRGR is usually 5 days.
3.What payment methods are accepted for OPA2322AIDRGR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2322AIDRGR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2322AIDRGR?
OPA2322AIDRGR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2322AIDRGR 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 OPA2322AIDRGR?
For technical support, including OPA2322AIDRGR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2322AIDRGR requirements.
6.How does Aetrix verify that OPA2322AIDRGR is sourced from the original manufacturer or authorized distributors?
All OPA2322AIDRGR 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 OPA2322AIDRGR meets industry standards.
7.What is the process for return or replacement of OPA2322AIDRGR?
All OPA2322AIDRGR units undergo pre-shipment inspection (PSI). If there is an issue with OPA2322AIDRGR, 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 OPA2322AIDRGR part is unused and in its original packaging.
Return procedure for OPA2322AIDRGR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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