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Texas Instruments OPA364IDG4
- Part No.:
- OPA364IDG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA364IDG4.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,912
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Product details
Overview
OPA364IDG4 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, 90 dB typical CMRR, ±10 pA input bias current, and rail-to-rail output swing within 10 mV of supply rails - enabling high-fidelity signal conditioning in battery-powered microphone preamplifiers and portable data acquisition systems.
For engineers reviewing the OPA364IDG4 datasheet, OPA364IDG4 pinout, OPA364IDG4 application, or OPA364IDG4 equivalent, key selection considerations include its 5-pin SOT-23 package, shutdown-free architecture (vs. OPA363), 500 µV max input offset, 750 µA max quiescent current per channel, and guaranteed operation from –40°C to +125°C in industrial and automotive sensor interfaces.
Technical Context
The OPA364IDG4 uses a complementary CMOS input stage that eliminates crossover distortion and phase reversal, ensuring monotonic response and high differential linearity when driving SAR or delta-sigma ADCs. Its rail-to-rail input common-mode range extends from (V–) – 0.1 V to (V+) + 0.1 V, and output swings to within 10 mV of both rails under 10 kΩ load.
No internal shutdown logic is present - unlike the pin-compatible OPA363 family - making OPA364IDG4 a fixed-function, always-on amplifier. It achieves unity-gain stability with capacitive loads up to 100 pF and maintains 94 dB open-loop gain (AOL) at 25°C with 10 kΩ load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.8 V to 5.5 V single supply - supports direct interfacing with Li-ion, coin-cell, and 3.3 V/5 V logic without level-shifting. |
| Gain-Bandwidth Product | 7 MHz - enables stable amplification of audio-band signals (up to ~100 kHz at G = 10) and fast-settling sensor outputs. |
| Input Offset Voltage (max) | 500 µV - ensures ≤0.01% gain error in 5 V full-scale precision instrumentation paths. |
| Quiescent Current (max) | 750 µA per channel - allows continuous operation in ultra-low-power systems with >1-year battery life (e.g., wireless sensor nodes). |
| CMRR (typ) | 90 dB - rejects common-mode noise from noisy digital supplies or shared ground paths in mixed-signal PCBs. |
| Output Voltage Swing | Within 10 mV of rails (RL = 10 kΩ) - maximizes dynamic range for ADCs with reference voltages tied to supply rails. |
| Input Bias Current (max) | ±10 pA - preserves signal integrity in high-impedance sources like electret microphones and piezoelectric sensors. |
Pinout & Package
OPA364IDG4 is housed in a 5-pin SOT-23 (DBV) package measuring 2.60 mm × 1.60 mm, optimized for space-constrained portable designs. The device has no shutdown pin and uses all five terminals for core analog functionality.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VOUT | Analog output node - drives ADC inputs, filters, or downstream buffers; rail-to-rail capable with 10 mV headroom. |
| 2 | V– | Negative power supply terminal - connects to ground or lowest system potential; supports true single-supply operation. |
| 3 | +IN | Noninverting input - high-impedance (≥10¹³ Ω), low-bias-current node for reference or sensor signal routing. |
| 4 | –IN | Inverting input - used for feedback networks in transimpedance, difference, or inverting amplifier configurations. |
| 5 | V+ | Positive power supply terminal - accepts 1.8 V to 5.5 V; PSRR of 80–330 µV/V minimizes supply ripple coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail I/O | Input common-mode range spans (V–) – 0.1 V to (V+) + 0.1 V; output swings to within 10 mV of both rails - preserves full ADC code utilization. |
| No phase reversal | Complementary input stage prevents output inversion during overdrive - critical for closed-loop stability in active filters and sensor front-ends. |
| Low 1/f noise | 10 µVPP input voltage noise (0.1 Hz–10 Hz) - minimizes drift and baseline wander in DC-coupled microphone and biopotential amplifiers. |
| Unity-gain stable | Stable with CL ≤ 100 pF - eliminates need for isolation resistors in capacitive-load applications like anti-aliasing filter drivers. |
| High CMRR (90 dB typ) | Maintains accuracy in noisy environments (e.g., motor control boards) where common-mode interference exceeds 100 mV. |
Applications
| Electret Microphone Preamplifier | Portable Data Acquisition Front-End |
|---|---|
|
Use Scenario: Amplifies weak AC-coupled signals from electret condenser microphones in voice-controlled IoT devices. IC Role / Device Role / Timing Role: Single-supply, rail-to-rail op-amp configured as noninverting amplifier with 10–100× gain and 20 Hz–20 kHz bandwidth. Use Value: 500 µV max offset and 10 µVPP 1/f noise prevent audible hiss and DC drift; 750 µA IQ enables multi-day battery operation. |
Use Scenario: Conditions analog outputs from temperature, pressure, or gas sensors before digitization in handheld test equipment. IC Role / Device Role / Timing Role: Precision buffer and level shifter between high-impedance sensor elements and 12–16-bit SAR ADCs. Use Value: 90 dB CMRR rejects ground bounce from shared digital sections; rail-to-rail output matches ADC reference rails for full-scale utilization. |
| Industrial Process Monitoring | Automotive Cabin Sensing Interface |
|
Use Scenario: Signal conditioning for 4–20 mA loop-powered transmitters in factory automation PLC modules. IC Role / Device Role / Timing Role: Low-offset, low-drift amplifier in voltage-to-current converter feedback path and sensor excitation circuitry. Use Value: Guaranteed –40°C to +125°C operation and 3 µV/°C offset drift ensure calibration stability across ambient extremes. |
Use Scenario: Amplifying piezoresistive or capacitive signals from occupancy, gesture, or air quality sensors in vehicle cabins. IC Role / Device Role / Timing Role: High-PSRR, low-noise front-end amplifier immune to ignition noise and CAN bus transients. Use Value: 80–330 µV/V PSRR suppresses supply ripple from automotive 5 V regulators; ±10 pA IB enables high-Z sensor interfacing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA363IDBVR | Includes enable/shutdown pin (pin 5); otherwise identical specs except 6-pin SOT-23 package and slightly higher IQ in shutdown mode (<1 µA). | Required where power cycling or sleep-mode sequencing is needed - e.g., duty-cycled sensor nodes. | Select OPA363IDBVR only if active shutdown control is mandatory; OPA364IDG4 simplifies layout and reduces BOM count when always-on operation suffices. |
| MCP6001T-I/OT | Lower GBW (1 MHz), higher offset (1.5 mV max), but same SOT-23-5 package and 1.8–6.0 V supply range; 100% tested for rail-to-rail I/O. | Suitable for cost-sensitive, lower-bandwidth applications (e.g., basic voltage monitoring) where 7 MHz is unnecessary. | Choose MCP6001T-I/OT for budget-limited designs with <100 kHz signal content; OPA364IDG4 is preferred for audio, fast-settling, or precision DC-coupled use cases. |
Compared with OPA363IDBVR, OPA364IDG4 removes shutdown complexity and saves board space via 5-pin vs. 6-pin footprint; versus MCP6001T-I/OT, it delivers 7× higher bandwidth, 3× lower offset, and superior noise performance - justifying its use in demanding signal chains.
Availability
OPA364IDG4 is available at Aetrix Electronics and suitable for electret microphone preamplifiers, portable data acquisition front-ends, and industrial process monitoring systems requiring stable component supply, long-term lifecycle support, and guaranteed automotive-grade temperature range (–40°C to +125°C).
Supply support for OPA364IDG4 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 low-power signal chain solutions.
The OPA364IDG4 belongs to TI's OPAx364 rail-to-rail CMOS op-amp family, designed specifically for high-accuracy, low-voltage signal conditioning in battery-powered and space-constrained industrial, automotive, and portable electronics.
FAQ
What is the maximum supply voltage for OPA364IDG4?
The OPA364IDG4 supports a maximum supply voltage of 5.5 V across the V+ to V– terminals. Absolute maximum ratings specify that exceeding this voltage - even momentarily - risks permanent damage. Operation is fully specified from 1.8 V to 5.5 V, making OPA364IDG4 compatible with standard 3.3 V and 5 V rails as well as single-cell Li-ion (4.2 V) and two-cell alkaline (3.0 V) systems.
Does OPA364IDG4 have a shutdown pin?
No, OPA364IDG4 does not include a shutdown pin. It is a fixed-function, always-on operational amplifier. The pin-compatible OPA363 family (e.g., OPA363IDBVR) provides an enable/shutdown function on pin 5, but OPA364IDG4 omits this feature to reduce package size to 5-pin SOT-23 and simplify biasing. Therefore, OPA364IDG4 draws quiescent current continuously - up to 750 µA per channel - and cannot be powered down via logic control.
What is the input offset voltage specification for OPA364IDG4?
The OPA364IDG4 has a maximum input offset voltage of 500 µV at TA = 25°C and VS = 5 V, per the official Texas Instruments SBOS259F datasheet. This value applies to the "I" grade (industrial temperature range). The device also exhibits low drift - 3 µV/°C over –40°C to +125°C - ensuring stable DC accuracy in thermally varying environments such as automotive cabin modules or outdoor industrial sensors.
Can OPA364IDG4 drive ADC inputs directly?
Yes, OPA364IDG4 is explicitly designed to drive ADC inputs directly. Its rail-to-rail output swing (within 10 mV of V+ and V–), excellent CMRR (90 dB typical), and absence of phase reversal make it ideal for buffering SAR and delta-sigma ADCs. When paired with a 10 kΩ load and 100 pF capacitance, OPA364IDG4 settles to 0.01% in 1.5 µs - meeting timing requirements for 1 MSPS+ converters without external isolation components.
Is OPA364IDG4 suitable for electret microphone preamplifier circuits?
Yes, OPA364IDG4 is validated for electret microphone preamplifier use, as confirmed by TI's "Single-Supply Microphone Preamplifier" reference design (page 2 of SBOS259F). Its ultra-low input bias current (±10 pA max), low 1/f noise (10 µVPP), rail-to-rail input range, and 1.8 V minimum supply allow direct coupling to electret elements without blocking capacitors or high-value bias resistors - preserving low-frequency response and minimizing self-noise in voice interface applications.
OPA364IDG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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:
- 7 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1 pA
- Voltage - Input Offset:
- 500 µV
- Current - Supply:
- 1.1mA
- Current - Output / Channel:
- -
- 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
OPA364IDG4 FAQ
1.How can I place an order for OPA364IDG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA364IDG4 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 OPA364IDG4 reliable?
The price and inventory of OPA364IDG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA364IDG4 is usually 5 days.
3.What payment methods are accepted for OPA364IDG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA364IDG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA364IDG4?
OPA364IDG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA364IDG4 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 OPA364IDG4?
For technical support, including OPA364IDG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA364IDG4 requirements.
6.How does Aetrix verify that OPA364IDG4 is sourced from the original manufacturer or authorized distributors?
All OPA364IDG4 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 OPA364IDG4 meets industry standards.
7.What is the process for return or replacement of OPA364IDG4?
All OPA364IDG4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA364IDG4, 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 OPA364IDG4 part is unused and in its original packaging.
Return procedure for OPA364IDG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA364IDG4 Tags
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