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Texas Instruments OPA2364IDGKR
- Part No.:
- OPA2364IDGKR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
OPA2364IDGKR.pdf
- Description:
- IC CMOS 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,371
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Product details
Overview
OPA2364IDGKR from Texas Instruments is a dual-channel, 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, ±10 pA input bias current, and 500 µV maximum input offset voltage - enabling precision signal conditioning in battery-powered sensor interfaces and microphone preamplifiers.
For engineers reviewing the OPA2364IDGKR datasheet, OPA2364IDGKR pinout, OPA2364IDGKR application, or OPA2364IDGKR equivalent, this page provides verified technical context, package-specific pin functions, real-world use cases, and validated alternative options for low-voltage, high-accuracy analog signal paths.
Technical Context
The OPA2364IDGKR implements a complementary CMOS input stage that eliminates crossover distortion, ensuring monotonic common-mode response and preserving differential linearity when driving SAR and delta-sigma ADCs. Its rail-to-rail input range extends from (V–) – 0.1 V to (V+) + 0.1 V, and output swing reaches within 10 mV of both rails under 10 kΩ load at 25°C.
No shutdown functionality is integrated - unlike the OPA2363 family - making OPA2364IDGKR a dedicated dual op-amp with fixed active operation. It is specified across –40°C to +125°C and exhibits 3 µV/°C offset drift and 17 nV/√Hz input voltage noise density at 10 kHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.8 V to 5.5 V single supply - supports direct interface with Li-ion, coin-cell, and 3.3 V logic systems without level-shifting. |
| Gain-Bandwidth Product | 7 MHz - enables stable unity-gain and G = 10 configurations up to ~700 kHz with minimal phase margin loss. |
| Slew Rate | 5 V/µs - supports clean 20 kHz audio signal amplification with <0.002% THD+N at 5 V supply. |
| Input Offset Voltage | ≤500 µV (max) - ensures ≤0.5 mV error in 1 V full-scale sensor outputs without trimming. |
| CMRR | 90 dB (typical) - rejects >30 kΩ unbalanced source impedance effects in industrial transducer interfaces. |
| Quiescent Current | 750 µA per channel (max) - allows dual-amplifier operation on <1.5 mA total, critical for always-on IoT nodes. |
| Input Bias Current | ±10 pA (max at 25°C) - permits use with >10 MΩ feedback networks in high-impedance pH or photodiode circuits. |
Pinout & Package
OPA2364IDGKR is packaged in an 8-pin VSSOP (DGK) with 3.00 mm × 3.00 mm body size and 0.5 mm lead pitch. This thermally enhanced, surface-mount package supports high-density PCB layouts and offers improved thermal resistance (RθJA = 171.8°C/W) versus SOIC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - drives loads down to 10 kΩ while maintaining rail-to-rail swing (≥V– + 10 mV, ≤V+ – 10 mV). |
| 2 | –IN A | Inverting input, Channel A - accepts signals across full supply range; high impedance (≥1013 Ω) minimizes loading on passive filters. |
| 3 | +IN A | Noninverting input, Channel A - used for unity-gain buffers or high-Z sensor connections with matched layout to –IN A. |
| 4 | V– | Negative supply terminal - referenced to system ground in single-supply designs; must be decoupled with 100 nF ceramic near pin. |
| 5 | –IN B | Inverting input, Channel B - electrically isolated from Channel A; supports independent gain stages or differential receivers. |
| 6 | +IN B | Noninverting input, Channel B - pin-compatible with +IN A; enables matched dual-path signal conditioning (e.g., stereo audio, dual-axis sensors). |
| 7 | OUT B | Amplifier B output - identical AC/DC performance to OUT A; supports simultaneous dual-channel acquisition without crosstalk degradation. |
| 8 | V+ | Positive supply terminal - accepts 1.8–5.5 V; internal ESD protection clamps inputs to V+ ±0.5 V. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail I/O | Input range includes both supply rails; output swings to within 10 mV of V– and V+, enabling full dynamic range utilization in 1.8 V systems. |
| No phase reversal | CM input beyond rails does not invert output polarity - prevents latch-up or erroneous control signals in overvoltage fault conditions. |
| Low 1/f noise | 10 µVPP (0.1–10 Hz) - critical for DC-stable sensor front-ends like load cells and thermopiles where drift dominates error budget. |
| Unity-gain stable | Operates without external compensation at G = 1 - simplifies design of anti-aliasing filters and reference buffers with minimal BOM count. |
| High PSRR | 80 dB minimum (100 µV/V) - suppresses ripple from switching regulators feeding V+, reducing need for LDO post-regulation. |
Applications
| Medical Pulse Oximetry Front-End | Industrial 4–20 mA Loop Receiver |
|---|---|
|
Use Scenario: Amplifying weak, low-frequency photodiode currents (nA–µA) in wearable SpO₂ sensors with 1.8 V MCU supply. IC Role / Device Role / Timing Role: Dual-channel transimpedance and DC-coupled gain stage - Channel A converts photodiode current; Channel B buffers reference voltage for ratiometric correction. Use Value: 10 pA input bias enables ≥10 MΩ TIA feedback without significant offset drift; rail-to-rail output drives 12-bit SAR ADC directly. |
Use Scenario: Converting 4–20 mA loop current to 0–5 V for PLC analog inputs in factory automation cabinets. IC Role / Device Role / Timing Role: Precision current-to-voltage converter and buffer - Channel A sets 250 Ω shunt gain; Channel B isolates and scales output for isolation barrier. Use Value: 500 µV max offset contributes <0.01% FSR error; 90 dB CMRR rejects common-mode noise from shared 24 V loop power supply. |
| Portable Electret Microphone Preamplifier | Battery-Operated Gas Sensor Signal Chain |
|
Use Scenario: First-stage amplification of electret mic output (10–20 mV RMS) in Bluetooth headsets powered by 3.7 V Li-ion. IC Role / Device Role / Timing Role: Single-supply AC-coupled noninverting amplifier - Channel A boosts mic signal; Channel B filters and level-shifts for ADC input. Use Value: 7 MHz GBW supports flat 20–20 kHz response; 17 nV/√Hz noise floor preserves SNR above 65 dB(A) at 1 kHz. |
Use Scenario: Conditioning electrochemical sensor output (sub-µV to mV) in handheld air quality monitors running on CR2032 coin cell. IC Role / Device Role / Timing Role: Low-power instrumentation amplifier front-end - Channel A and B configured as precision difference amplifier with matched gain. Use Value: 750 µA/channel quiescent current enables >1-year battery life; 3 µV/°C drift maintains calibration stability across operating temperature range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-rail-to-rail op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2333AIDR | Zero-drift architecture (0.02 µV/°C), lower offset (10 µV max), but lower GBW (350 kHz) and higher IQ (17 µA/channel). | Better for DC-critical applications (e.g., precision weigh scales); unsuitable for audio or fast-settling data acquisition. | Select OPA2333AIDR only when sub-µV offset drift dominates bandwidth requirements. |
| MCP6022-I/SN | Higher IQ (1 mA/channel), wider supply range (2.7–6 V), but lower CMRR (70 dB typ) and no guaranteed 1.8 V operation. | Acceptable for 3.3 V industrial controls with relaxed noise/CMRR specs; not qualified for –40°C to +125°C. | Choose MCP6022-I/SN only if legacy 3.3 V design reuse is prioritized over low-voltage capability and temperature range. |
Compared with OPA2364IDGKR, OPA2333AIDR trades bandwidth and power for ultra-low drift, while MCP6022-I/SN sacrifices rail-to-rail performance and temperature rating for broader legacy supply compatibility - making OPA2364IDGKR optimal for new 1.8–5.5 V, wide-temp, audio/sensor designs.
Availability
OPA2364IDGKR is available at Aetrix Electronics and suitable for portable medical devices, industrial loop receivers, battery-powered gas sensors, and electret microphone preamplifiers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for OPA2364IDGKR 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, data converters, and power management ICs.
The OPA2364IDGKR belongs to TI's OPAx364 family of low-voltage, rail-to-rail op-amps designed specifically for high-fidelity signal conditioning in space- and power-constrained battery-operated systems - including wearables, IoT endpoints, and portable test equipment.
FAQ
What supply voltage range does the OPA2364IDGKR support?
The OPA2364IDGKR operates from a single supply of 1.8 V to 5.5 V, with full specifications guaranteed across this range. It does not require split supplies and functions correctly with V– tied to ground. At 1.8 V, it maintains 7 MHz GBW and rail-to-rail I/O - enabling direct integration into ultra-low-power microcontroller domains without voltage translation.
Does the OPA2364IDGKR include a shutdown pin?
No, the OPA2364IDGKR does not feature a shutdown function. Unlike the OPA2363 series, which adds an enable pin per channel, the OPA2364IDGKR is a fixed-operation dual op-amp. All channels remain active whenever power is applied to V+ and V–. For power-gated applications, external MOSFET control of the supply rail is required.
What is the maximum input offset voltage specification for OPA2364IDGKR?
The OPA2364IDGKR has a maximum input offset voltage of 500 µV at 25°C and VS = 5 V, per the official Texas Instruments SBOS259F datasheet. This value applies to both channels independently and remains valid across the full –40°C to +125°C operating temperature range, with a worst-case drift of 3 µV/°C.
Can OPA2364IDGKR drive capacitive loads without oscillation?
Yes, the OPA2364IDGKR is unity-gain stable and can safely drive ≥100 pF capacitive loads, as confirmed in the datasheet's Typical Characteristics (Figure 13). For loads exceeding 100 pF, a small series resistor (e.g., 10–50 Ω) between output and capacitance is recommended to maintain phase margin - especially in high-impedance sensor buffering applications.
Is OPA2364IDGKR pin-compatible with other packages in the OPA2364 family?
Yes, the OPA2364IDGKR (8-pin VSSOP) shares identical pinout and electrical behavior with the OPA2364IDR (8-pin SOIC), allowing drop-in replacement in existing layouts. Both use the same pin numbering: OUT A (1), –IN A (2), +IN A (3), V– (4), –IN B (5), +IN B (6), OUT B (7), V+ (8). No PCB changes are needed when migrating between these two packages.
OPA2364IDGKR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- CMOS
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 5V/µs
- Gain Bandwidth Product:
- 7 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1 pA
- Voltage - Input Offset:
- 900 µV
- Current - Supply:
- 1.1mA (x2 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:
- 8-VSSOP
OPA2364IDGKR FAQ
1.How can I place an order for OPA2364IDGKR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2364IDGKR 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 OPA2364IDGKR reliable?
The price and inventory of OPA2364IDGKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2364IDGKR is usually 5 days.
3.What payment methods are accepted for OPA2364IDGKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2364IDGKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2364IDGKR?
OPA2364IDGKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2364IDGKR 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 OPA2364IDGKR?
For technical support, including OPA2364IDGKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2364IDGKR requirements.
6.How does Aetrix verify that OPA2364IDGKR is sourced from the original manufacturer or authorized distributors?
All OPA2364IDGKR 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 OPA2364IDGKR meets industry standards.
7.What is the process for return or replacement of OPA2364IDGKR?
All OPA2364IDGKR units undergo pre-shipment inspection (PSI). If there is an issue with OPA2364IDGKR, 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 OPA2364IDGKR part is unused and in its original packaging.
Return procedure for OPA2364IDGKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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