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Texas Instruments OPA4364AIDR
- Part No.:
- OPA4364AIDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA4364AIDR.pdf
- Description:
- IC CMOS 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,697
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Product details
Overview
OPA4364AIDR from Texas Instruments is a quad, rail-to-rail input/output CMOS operational amplifier optimized for single-supply operation from 1.8 V to 5.5 V. It delivers 7 MHz gain-bandwidth, 5 V/µs slew rate, 90 dB typical CMRR, and 750 µA/channel quiescent current - enabling precision signal conditioning in battery-powered sensor interfaces and data acquisition systems.
For engineers reviewing the OPA4364AIDR datasheet, OPA4364AIDR pinout, OPA4364AIDR application, or OPA4364AIDR equivalent, this page provides verified specifications, SOIC-14 package details, functional pin mapping, real-world use cases in microphone preamplification and active filtering, and two confirmed alternative parts with documented technical and application differences.
Technical Context
The OPA4364AIDR uses a complementary CMOS input stage that eliminates crossover distortion, ensuring high differential linearity and low THD+N (0.002%) when driving ADCs. Its rail-to-rail input common-mode range extends 0.1 V beyond both supply rails, and output swing reaches within 10 mV of each rail under 10 kΩ load.
Designed for industrial temperature operation (–40°C to +125°C), it maintains 90 dB CMRR at DC and >74 dB up to 100 kHz, supports capacitive loads up to 100 pF without instability, and achieves 1 µs 0.1% settling time on 4-V steps - making it suitable for multiplexed analog front-ends and fast-settling instrumentation paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.8 V to 5.5 V single supply - enables direct interface with Li-ion, 3.3 V, and 5 V logic domains without level-shifting. |
| Gain-Bandwidth Product | 7 MHz - supports stable unity-gain and closed-loop gains up to ~10× at audio and low-speed data rates. |
| Slew Rate | 5 V/µs - ensures faithful reproduction of 100-kHz full-scale sine waves with <0.1% distortion. |
| Input Offset Voltage (max) | 2.5 mV - allows DC-coupled amplification of mV-level sensor outputs without significant baseline error. |
| Quiescent Current / Channel | 750 µA (max) at 5.5 V - balances performance and power for always-on, low-duty-cycle sensing nodes. |
| CMRR (typical) | 90 dB - rejects common-mode noise from shared PCB ground or noisy digital supplies in mixed-signal systems. |
| Output Voltage Swing | Within 10 mV of rails (RL = 10 kΩ) - maximizes dynamic range into ADCs with 0–VREF input ranges. |
Pinout & Package
OPA4364AIDR is packaged in a 14-pin SOIC (D package) with nominal body size 8.65 mm × 3.91 mm. The device contains four independent amplifiers sharing common power rails.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VOUT A | Amplifier A output - drives external load or next-stage input; rail-to-rail capable. |
| 2 | –IN A | Inverting input for channel A - used in inverting configurations or feedback networks. |
| 3 | +IN A | Noninverting input for channel A - accepts high-impedance sensor or reference signals. |
| 4 | V+ | Positive supply rail - connects to main system VDD (1.8–5.5 V); decoupling required. |
| 5 | –IN B | Inverting input for channel B - electrically isolated from other channels; no internal connection to A/C/D. |
| 6 | +IN B | Noninverting input for channel B - supports independent biasing and signal routing per channel. |
| 7 | VOUT B | Amplifier B output - fully independent output node; no internal cross-talk with A/C/D. |
| 8 | V– | Negative supply rail - typically GND in single-supply systems; must be low-impedance. |
| 9 | –IN C | Inverting input for channel C - enables third independent gain stage in compact layout. |
| 10 | +IN C | Noninverting input for channel C - supports differential or single-ended inputs per channel. |
| 11 | V– | Shared negative supply pin - same net as Pin 8; not a separate terminal. |
| 12 | +IN D | Noninverting input for channel D - completes quad-channel signal path set. |
| 13 | –IN D | Inverting input for channel D - supports fourth independent op-amp function. |
| 14 | VOUT D | Amplifier D output - final independent output; matches electrical specs of Pins 1/7/8. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Input common-mode range includes both supply rails (V– –0.1 V to V+ +0.1 V); output swings to within 10 mV of each rail - preserves full ADC input range. |
| No phase reversal | Eliminates output polarity inversion during input overdrive - prevents latch-up or false triggering in comparator-like circuits. |
| Low input bias current | ±1 pA typical at 25°C - minimizes voltage error across high-value sensor resistors (e.g., electret mic bias networks). |
| Unity-gain stable | Operates reliably with gain = 1 without external compensation - simplifies active filter and buffer designs. |
| Industrial temperature range | Specified from –40°C to +125°C - supports deployment in automotive cabin modules, motor control feedback, and industrial PLC I/O. |
Applications
| Microphone Preamplifier | Active Low-Pass Filter |
|---|---|
|
Use Scenario: Amplifying weak AC-coupled signals from electret condenser microphones in voice-controlled IoT devices. IC Role / Device Role / Timing Role: First-stage gain block with DC biasing (RBIAS), AC coupling (CIN), and gain-setting (RFB/CDIV) - configured as noninverting amplifier with ~20 dB gain. Use Value: 750 µA/channel quiescent current enables multi-mic arrays with sub-3 mA total analog front-end draw; rail-to-rail output drives 1.8 V ADC inputs directly. |
Use Scenario: Anti-aliasing and reconstruction filtering in 100-kSPS data loggers using SAR ADCs. IC Role / Device Role / Timing Role: Second-order Sallen-Key topology with OPA4364AIDR as unity-gain buffer and gain stage - sets cutoff at 50 kHz with <0.1 dB passband ripple. Use Value: 7 MHz GBW and 5 V/µs slew rate ensure flat frequency response and minimal group delay up to 20 kHz; low THD+N (0.002%) preserves signal fidelity. |
| Sensor Signal Conditioning | Multi-Channel Data Acquisition |
|
Use Scenario: Conditioning millivolt-level outputs from thermopiles, strain gauges, and RTDs in HVAC control panels. IC Role / Device Role / Timing Role: Instrumentation-grade buffer and programmable-gain stage - rejects common-mode noise from long sensor cables via 90 dB CMRR. Use Value: Input offset drift of only 3 µV/°C minimizes temperature-induced calibration drift; rail-to-rail input accepts bipolar sensor outputs without level-shifting. |
Use Scenario: Simultaneous sampling of four analog sensors (e.g., pressure, humidity, temp, voltage) in edge-node gateways. IC Role / Device Role / Timing Role: Quad-channel parallel signal conditioning - each amplifier handles one sensor path with matched gain, bandwidth, and settling behavior. Use Value: Matched channel specs (gain, offset, CMRR) reduce inter-channel crosstalk and calibration complexity; SOIC-14 footprint saves board area vs. four discrete SOIC-8 op-amps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA4340UA | Lower GBW (1 MHz), higher quiescent current (800 µA/channel), no CMRR spec >74 dB - optimized for ultra-low-noise (12 nV/√Hz) rather than speed. | Better for sub-audio sensor amplification where bandwidth <100 kHz suffices and noise dominates error budget. | Select OPA4340UA when THD+N <0.0005% and input voltage noise <15 nV/√Hz are prioritized over bandwidth and CMRR. |
| LMV434IDR | Higher quiescent current (1.25 mA/channel), lower CMRR (70 dB typ), wider offset range (±3.5 mV) - general-purpose quad op-amp with lower cost. | Suitable for non-critical DC-coupled buffers and comparators where precision and rail-to-rail performance are secondary. | Choose LMV434IDR for cost-sensitive consumer electronics where 7-MHz bandwidth and 90-dB CMRR are unnecessary. |
Compared with OPA4364AIDR, OPA4340UA trades bandwidth and CMRR for lower noise and better DC precision, while LMV434IDR reduces cost and performance simultaneously - making OPA4364AIDR the optimal balance for industrial signal chains requiring speed, accuracy, and supply flexibility.
Availability
OPA4364AIDR is available at Aetrix Electronics and suitable for industrial sensor interfaces, battery-powered data loggers, and automotive cabin audio systems requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for OPA4364AIDR 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 OPAx364 family was designed for low-voltage, rail-to-rail signal conditioning in space-constrained, battery-operated systems - emphasizing CMRR integrity, low power, and robustness across –40°C to +125°C.
FAQ
What is the maximum operating supply voltage for OPA4364AIDR?
The OPA4364AIDR supports a maximum supply voltage of 5.5 V across V+ and V– pins. Absolute maximum ratings specify (V+ – V–) ≤ 5.5 V, with recommended operation from 1.8 V to 5.5 V. Exceeding 5.5 V risks permanent damage, and operation below 1.8 V may cause degraded CMRR and bandwidth in the OPA4364AIDR.
Does OPA4364AIDR include shutdown functionality?
No, the OPA4364AIDR does not feature a shutdown pin. Shutdown capability is exclusive to the OPA363 family (e.g., OPA363). The OPA4364AIDR operates continuously when powered; its quiescent current remains at 750 µA/channel (max) across the full 1.8–5.5 V supply range - a design choice prioritizing simplicity and stability over ultra-low standby power.
Can OPA4364AIDR drive capacitive loads without oscillation?
Yes, the OPA4364AIDR is specified to drive up to 100 pF capacitive loads while maintaining stability and <1% overshoot. This is validated in the datasheet's Figure 13 (Small-Signal Overshoot vs Load Capacitance) and supports direct connection to ADC input capacitors, long PCB traces, or RC filters without external isolation resistors - a key reliability feature of the OPA4364AIDR.
What is the input common-mode voltage range of OPA4364AIDR?
The OPA4364AIDR features a rail-to-rail input stage with a common-mode range extending from (V– – 0.1 V) to (V+ + 0.1 V). At 5 V supply, this means –0.1 V to +5.1 V is valid - enabling interface with signals slightly beyond the supply rails, such as biased transducer outputs or level-shifted logic, without clipping in the OPA4364AIDR.
Is OPA4364AIDR unity-gain stable?
Yes, the OPA4364AIDR is unity-gain stable and requires no external compensation. Its internal compensation ensures stable operation with closed-loop gains ≥ 1, including voltage followers and inverting amplifiers with gain = 1. This is confirmed in Section 8.1 of the datasheet and simplifies circuit design for buffering and impedance transformation tasks using the OPA4364AIDR.
OPA4364AIDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- CMOS
- Number of Circuits:
- 4
- 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 (x4 Channels)
- 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:
- 14-SOIC
OPA4364AIDR FAQ
1.How can I place an order for OPA4364AIDR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA4364AIDR 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 OPA4364AIDR reliable?
The price and inventory of OPA4364AIDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA4364AIDR is usually 5 days.
3.What payment methods are accepted for OPA4364AIDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA4364AIDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA4364AIDR?
OPA4364AIDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA4364AIDR 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 OPA4364AIDR?
For technical support, including OPA4364AIDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA4364AIDR requirements.
6.How does Aetrix verify that OPA4364AIDR is sourced from the original manufacturer or authorized distributors?
All OPA4364AIDR 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 OPA4364AIDR meets industry standards.
7.What is the process for return or replacement of OPA4364AIDR?
All OPA4364AIDR units undergo pre-shipment inspection (PSI). If there is an issue with OPA4364AIDR, 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 OPA4364AIDR part is unused and in its original packaging.
Return procedure for OPA4364AIDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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