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Texas Instruments OPA364AID
- Part No.:
- OPA364AID
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA364AID.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,399
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Product details
Overview
OPA364AID from Texas Instruments is a single, rail-to-rail input/output CMOS operational amplifier optimized for low-voltage, single-supply operation (1.8 V to 5.5 V). It delivers 7 MHz gain-bandwidth, 5 V/µs slew rate, and 90 dB typical CMRR, with output swing within 10 mV of rails - enabling high-fidelity signal conditioning in battery-powered microphone preamplifiers and sensor interfaces.
For engineers reviewing the OPA364AID datasheet, OPA364AID pinout, OPA364AID application, or OPA364AID equivalent, key selection criteria include its 500 µV max input offset voltage, 750 µA max quiescent current per channel, rail-to-rail I/O capability at 1.8-V supply, and SOIC-8 package compatibility with space-constrained industrial and portable designs.
Technical Context
The OPA364AID uses a complementary CMOS input stage that eliminates crossover distortion, ensuring monotonic common-mode response and preserving differential linearity when driving SAR or delta-sigma ADCs. Its unity-gain stable architecture supports direct use in active filters and precision buffers without external compensation.
Specified from –40°C to +125°C and featuring 100 dB open-loop gain (min), 17 nV/√Hz input voltage noise density at 10 kHz, and 2 pF differential input capacitance, the device maintains performance across wide temperature and supply ranges while supporting low-noise, low-distortion (<0.002% THD+N) signal paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.8 V to 5.5 V - enables direct integration into 2-cell Li-ion, 3.3-V, and 5-V systems without level-shifting. |
| Gain-Bandwidth Product | 7 MHz - supports stable closed-loop gain ≥10 up to ~700 kHz, suitable for anti-aliasing and reconstruction filters. |
| Slew Rate | 5 V/µs - ensures <1.5 µs settling to 0.01% for 4-V steps, critical for fast data acquisition front-ends. |
| Input Offset Voltage (max) | 500 µV - minimizes DC error in precision sensor amplification (e.g., bridge-based pressure transducers). |
| CMRR (typ) | 90 dB - rejects power-supply ripple and shared-impedance noise in single-supply mixed-signal PCB layouts. |
| Quiescent Current (max) | 750 µA per channel - allows continuous operation in always-on IoT nodes with multi-year battery life. |
| Output Swing | Within 10 mV of rails (RL = 10 kΩ) - maximizes dynamic range when interfacing with 12-bit+ ADCs referenced to same supply. |
Pinout & Package
OPA364AID is housed in an 8-pin SOIC (D) package measuring 4.90 mm × 3.91 mm, with standard JEDEC MS-012AC footprint and 1.27-mm pitch. Thermal resistance RθJA is 125.3°C/W, supporting operation up to +125°C ambient with minimal derating.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VOUT | Amplifier output node - drives loads up to 10 kΩ; requires local 100-pF bypass for stability with capacitive loads. |
| 2 | –IN | Inverting input - high-impedance CMOS node (±1 pA bias); connects to feedback network in inverting configurations. |
| 3 | +IN | Noninverting input - rail-to-rail common-mode range (V– – 0.1 V to V+ + 0.1 V) enables direct sensor connection. |
| 4 | V– | Negative supply terminal - tied to ground in single-supply operation; must be low-impedance for PSRR integrity. |
| 5 | NC | No internal connection - electrically isolated; may be left floating or grounded for mechanical stability. |
| 6 | VOUT | Output (duplicate pin for thermal/power routing) - not internally connected; used only for package-level heat dissipation. |
| 7 | V+ | Positive supply terminal - accepts 1.8–5.5 V; requires 0.1-µF ceramic decoupling within 5 mm of pin. |
| 8 | NC | No internal connection - electrically isolated; no routing or grounding required. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Supports full-scale signal swing from ground to V+ without clipping - essential for maximizing SNR in 3.3-V data loggers. |
| No phase reversal | Eliminates output latch-up during input overdrive - prevents system faults in transient-prone industrial sensor inputs. |
| 90-dB CMRR (typical) | Maintains accuracy despite supply ripple or ground bounce - reduces need for separate analog/digital ground planes. |
| 17 nV/√Hz input voltage noise | Enables clean amplification of µV-level signals (e.g., electret mic outputs) without degrading system noise floor. |
| Unity-gain stable | Operates reliably with gain = 1 without external compensation - simplifies layout in buffer and level-shift applications. |
Applications
| Microphone Preamplifier | Industrial Sensor Signal Chain |
|---|---|
Use Scenario: Amplifying low-output electret microphone signals in voice-controlled edge devices. IC Role / Device Role / Timing Role: Single-supply, rail-to-rail op-amp configured as noninverting AC-coupled gain stage (G = 100). Use Value: 500 µV max offset and 17 nV/√Hz noise preserve speech intelligibility; 7-MHz bandwidth captures full audio spectrum (20 Hz–20 kHz). |
Use Scenario: Conditioning bridge sensor outputs (e.g., load cells, pressure transducers) in factory automation PLC modules. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end with programmable gain and low-drift DC coupling. Use Value: 90 dB CMRR rejects motor-drive EMI; 10-mV rail-to-rail swing maximizes 16-bit ADC utilization; –40°C to +125°C rating ensures field reliability. |
| Portable Data Acquisition | Active Filter for Medical Monitoring |
Use Scenario: Front-end buffering and anti-aliasing filtering in handheld multimeters and oscilloscope probes. IC Role / Device Role / Timing Role: Unity-gain buffer isolating high-impedance probe tip from downstream ADC sampling circuitry. Use Value: 750 µA quiescent current extends battery life; 5 V/µs slew rate handles fast transients without distortion; SOIC-8 eases hand-soldering during prototyping. |
Use Scenario: Implementing 2nd-order low-pass filtering in wearable ECG/EEG front-ends to suppress 50/60-Hz interference. IC Role / Device Role / Timing Role: Dual-op-amp Sallen-Key topology (one OPA364AID per channel) with precise component matching. Use Value: 100 dB open-loop gain ensures filter Q-factor stability; rail-to-rail I/O accommodates ±1.65-V signal swing on 3.3-V supplies; low THD+N (<0.002%) preserves biopotential fidelity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA363AID | Includes shutdown pin (pin 5); otherwise identical specs except 900 µV max offset (vs. 500 µV for OPA364AID). | Required where system-level power gating is needed; adds complexity if shutdown unused. | Select OPA363AID only when active power management justifies extra pin control and higher offset tolerance. |
| MCP6001T-I/OT | Lower bandwidth (1 MHz), higher offset (1.5 mV max), but lower quiescent current (100 µA); SOT-23-5 package. | Better suited for ultra-low-power, low-speed sensing (e.g., temperature monitoring), not audio or fast DAQ. | Choose MCP6001T-I/OT for sub-100-µA battery budgets where 7-MHz bandwidth and 500-µV offset are unnecessary. |
Compared with OPA364AID, OPA363AID adds shutdown functionality at the cost of slightly degraded DC precision, while MCP6001T-I/OT trades bandwidth and offset performance for extreme power efficiency - making OPA364AID the optimal balance for precision, speed, and supply flexibility in industrial and portable signal chains.
Availability
OPA364AID is available at Aetrix Electronics and suitable for industrial sensor interfaces, portable data acquisition systems, and medical-grade active filters requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for OPA364AID 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 OPA364AID belongs to TI's OPAx364 family of rail-to-rail CMOS op-amps designed specifically for low-voltage, high-accuracy signal conditioning in battery-powered and industrial systems operating from –40°C to +125°C.
FAQ
What is the maximum supply voltage for OPA364AID?
The OPA364AID supports a maximum supply voltage of 5.5 V across the V+ to V– terminals, with absolute maximum ratings specifying 0 V to 5.5 V for the supply differential. Operation above 5.5 V risks permanent damage, and design margins should maintain ≤5.0 V for robust long-term reliability in industrial environments.
Does OPA364AID have a shutdown pin?
No, OPA364AID does not include a shutdown pin. That function is exclusive to the OPA363 variant (e.g., OPA363AID), which adds a dedicated enable pin. The OPA364AID is a 5-pin functional equivalent in SOIC-8 packaging but omits shutdown control - simplifying design where continuous operation is required.
Can OPA364AID drive capacitive loads?
Yes, OPA364AID can drive capacitive loads up to 100 pF while maintaining stability in unity-gain configuration, as verified in the datasheet's typical characteristics. For loads >100 pF, external isolation resistance (e.g., 10–50 Ω in series with the output) is recommended to prevent peaking or oscillation.
What is the input common-mode voltage range of OPA364AID?
The OPA364AID features a rail-to-rail input stage with a common-mode voltage range from (V– – 0.1 V) to (V+ + 0.1 V), allowing direct interface with sensors referenced to ground or V+ in single-supply systems - a key enabler for electret microphone biasing and bridge sensor excitation without level-shifting circuitry.
Is OPA364AID unity-gain stable?
Yes, OPA364AID is explicitly specified as unity-gain stable in the datasheet. It requires no external compensation and maintains phase margin >45° at G = 1 with CL = 100 pF, making it suitable for buffer, follower, and active filter applications without added components or layout constraints.
OPA364AID Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 5V/µs
- Gain Bandwidth Product:
- 7 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1 pA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 1.1mA
- Current - Output / Channel:
- 85 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-SOIC
OPA364AID FAQ
1.How can I place an order for OPA364AID through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA364AID 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 OPA364AID reliable?
The price and inventory of OPA364AID are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA364AID is usually 5 days.
3.What payment methods are accepted for OPA364AID?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA364AID transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA364AID?
OPA364AID orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA364AID 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 OPA364AID?
For technical support, including OPA364AID datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA364AID requirements.
6.How does Aetrix verify that OPA364AID is sourced from the original manufacturer or authorized distributors?
All OPA364AID 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 OPA364AID meets industry standards.
7.What is the process for return or replacement of OPA364AID?
All OPA364AID units undergo pre-shipment inspection (PSI). If there is an issue with OPA364AID, 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 OPA364AID part is unused and in its original packaging.
Return procedure for OPA364AID:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA364AID Tags
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LM358DT
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