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Texas Instruments OPA2369AIDGKTG4
- Part No.:
- OPA2369AIDGKTG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
OPA2369AIDGKTG4.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,284
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Product details
Overview
OPA2369AIDGKTG4 from Texas Instruments is a dual, ultra-low-power, rail-to-rail input/output operational amplifier optimized for 1.8V–5.5V battery-powered systems. It delivers 700nA per channel quiescent current, 250µV max input offset voltage, 12kHz gain-bandwidth product, and zero-crossover architecture to eliminate input-stage distortion-enabling precision signal conditioning in medical sensors and portable instrumentation.
For engineers reviewing the OPA2369AIDGKTG4 datasheet, OPA2369AIDGKTG4 pinout, OPA2369AIDGKTG4 application, or OPA2369AIDGKTG4 equivalent, this page provides verified technical context, package-specific pin mapping, real-world use cases, and validated alternative options for low-voltage, nano-power analog front-ends.
Technical Context
The OPA2369AIDGKTG4 implements a zero-crossover input stage that eliminates transition-region distortion across the full rail-to-rail common-mode range (V– to V+), critical for sub-3V operation. Its CMRR of 114dB and PSRR of 106dB ensure stable DC accuracy under supply and common-mode variation.
Designed for micro-power systems, it achieves 0.4µV/°C offset drift and 3.6µVPP (0.1Hz–10Hz) input noise while maintaining 134dB open-loop gain and 100mV output swing from rails at 100kΩ load-supporting high-impedance sensor interfaces without external biasing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 1.8V to 5.5V - enables direct interface with single-cell Li-ion, NiMH, or coin-cell batteries without regulation. |
| Quiescent Current | 700nA per channel - extends battery life in always-on wearable or implantable devices beyond 10 years on CR2032. |
| Input Offset Voltage | 250µV (max) - supports ±0.1% accuracy in 2.5V full-scale sensor bridges without trimming. |
| Gain-Bandwidth Product | 12kHz - sufficient for DC–100Hz physiological signals (ECG, EEG) and slow industrial transducers. |
| Common-Mode Rejection | 114dB - rejects >100,000:1 of power-supply ripple and EMI coupling in noisy embedded environments. |
| Output Swing | 10mV from rail (RL = 100kΩ) - preserves dynamic range in low-voltage ADC drivers with 1.8V reference. |
| Input Bias Current | 10pA - permits use with >10MΩ source impedances (e.g., pH electrodes, piezoresistive sensors) without significant error. |
Pinout & Package
VSSOP-8 (DGK) package: 3.0mm × 3.0mm body, 0.65mm pitch, exposed thermal pad, 1.1mm max height, RoHS-compliant NiPdAu lead finish, MSL Level-2-260°C-1 year.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT A) | Amplifier A output | Drives high-impedance loads directly; rail-to-rail swing supports full utilization of 1.8V ADCs. |
| 2 (–IN A) | Inverting input A | Differential node for precision instrumentation amplifiers or active filters with matched feedback networks. |
| 3 (+IN A) | Non-inverting input A | Accepts signals from 0V to V+; zero-crossover ensures linearity even at supply rails. |
| 4 (V–) | Negative supply | Ground reference for single-supply operation; ties to system GND in most portable designs. |
| 5 (+IN B) | Non-inverting input B | Independent input for dual-channel functions like window comparators or differential-to-single-ended conversion. |
| 6 (–IN B) | Inverting input B | Configurable as reference input or second sensor channel; shares same precision specs as Channel A. |
| 7 (OUT B) | Amplifier B output | Enables dual-path signal processing (e.g., simultaneous gain/offset correction) without additional ICs. |
| 8 (V+) | Positive supply | Accepts 1.8V–5.5V; internal regulation not required-reduces BOM count and PCB area. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-crossover input stage | Eliminates crossover distortion at rail inputs-critical for accurate DC-coupled sensor outputs near 0V or VCC. |
| Rail-to-rail I/O | Full 0V to V+ input range and 10mV output swing enables maximum signal fidelity in 1.8V systems. |
| Ultra-low IQ (700nA/ch) | Reduces average current draw below self-discharge rate of primary lithium cells-enabling decade-long shelf life. |
| Low offset drift (0.4µV/°C) | Minimizes calibration frequency in field-deployed equipment operating across –40°C to +85°C ambient. |
| High DC precision (134dB AOL, 114dB CMRR) | Supports 16-bit+ effective resolution in ratiometric bridge measurements without external trimming. |
Applications
| Battery Voltage Monitor | Wearable Physiological Sensor |
|---|---|
Use Scenario: Monitoring Li-ion cell voltage during charging/discharging in smart watches or hearing aids. IC Role / Device Role / Timing Role: Dual op amp configured as precision comparator with hysteresis, using one channel for threshold detection and the other for reference buffering. Use Value: 700nA total quiescent current extends runtime by >20% versus standard rail-to-rail op amps; zero-crossover ensures accurate 2.0V/3.0V trip points across temperature. |
Use Scenario: Amplifying microvolt-level EEG or EMG signals from dry electrodes in clinical-grade wearables. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier with matched OPA2369AIDGKTG4 channels providing gain and common-mode rejection before ADC. Use Value: 10pA input bias current prevents electrode polarization; 3.6µVPP low-frequency noise preserves SNR for sub-10Hz neural activity detection. |
| Portable Gas Detector Signal Chain | Low-Power Industrial Transmitter |
Use Scenario: Conditioning output from electrochemical gas sensors (e.g., CO, NO₂) in handheld safety meters. IC Role / Device Role / Timing Role: Single-supply transimpedance amplifier converting picoamp sensor current to voltage, with rail-to-rail output driving SAR ADC. Use Value: 250µV offset voltage enables <1ppm gas concentration resolution; 1.8V operation allows direct connection to energy-harvesting PMIC outputs. |
Use Scenario: 4–20mA loop transmitter for remote temperature or pressure sensors powered by 2-wire loop. IC Role / Device Role / Timing Role: Dual op amp implementing voltage-to-current conversion and loop compliance monitoring in ultra-low-power mode. Use Value: 700nA/channel IQ reduces loop burden below 1.5mA-ensuring compatibility with legacy 4–20mA receivers while enabling smart diagnostics. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-power, rail-to-rail op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2369AIDGKT | Identical electrical specs; same VSSOP-8 (DGK) package but NIPDAU lead finish instead of G4-spec NiPdAu. | No functional difference; suitable for identical applications where RoHS-compliant NiPdAu plating is not mandated. | Select OPA2369AIDGKT if standard NiPdAu finish suffices and cost optimization is prioritized over enhanced solderability/reliability. |
| LPV821DRXT | Lower IQ (650nA/ch), higher GBW (130kHz), but 350µV offset voltage and no zero-crossover architecture. | Acceptable for AC-coupled or higher-bandwidth sensor paths, but introduces nonlinearity near rails in DC-critical applications. | Choose LPV821DRXT only when bandwidth >12kHz is required and rail-linearity is not essential-e.g., audio preamps or fast-response smoke detectors. |
Compared with OPA2369AIDGKTG4, the OPA2369AIDGKT offers identical performance at lower cost, while the LPV821DRXT trades rail-linearity for speed-making OPA2369AIDGKTG4 the sole choice for precision DC-coupled, sub-1V operation in medical and battery-constrained systems.
Availability
OPA2369AIDGKTG4 is available at Aetrix Electronics and suitable for battery voltage monitoring, wearable physiological sensing, portable gas detection, and low-power industrial transmitters requiring stable component supply across long-lifecycle deployments.
Supply support for OPA2369AIDGKTG4 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 design.
The OPA2369AIDGKTG4 belongs to TI's nanoPOWER™ op amp family, engineered specifically for energy-constrained applications including medical wearables, IoT endpoints, and battery-backed instrumentation where µA-level IQ and rail-to-rail fidelity are non-negotiable.
FAQ
What is the maximum operating temperature range for the OPA2369AIDGKTG4?
The OPA2369AIDGKTG4 is specified for continuous operation from –40°C to +85°C ambient temperature, with extended survival up to +125°C. This range supports deployment in automotive cabins, industrial enclosures, and outdoor portable equipment without derating. Thermal resistance (θJA) is 252°C/W in the VSSOP-8 package, enabling reliable performance under natural convection cooling.
Does the OPA2369AIDGKTG4 require external compensation for stability?
No, the OPA2369AIDGKTG4 is unity-gain stable and does not require external compensation capacitors. Its 12kHz gain-bandwidth product and internal compensation ensure phase margin >60° into 100pF capacitive loads, as verified in Figure 20 of the SBOS414B datasheet. Stability is maintained with standard 0.1µF supply bypassing per TI layout guidelines.
Can the OPA2369AIDGKTG4 drive ADC inputs directly?
Yes, the OPA2369AIDGKTG4 can directly drive SAR and delta-sigma ADC inputs. Its 10mV rail-to-rail output swing at 100kΩ load, low 10pA input bias, and 3.6µVPP 0.1Hz–10Hz noise preserve resolution in 16-bit+ converters. For optimal settling, pair with a 10Ω series resistor and 1nF capacitor at the ADC input per TI application note SLOA058.
What is the meaning of the 'G4' suffix in OPA2369AIDGKTG4?
The 'G4' suffix denotes Texas Instruments' enhanced NiPdAu (nickel-palladium-gold) lead finish, optimized for superior solderability, wire-bond reliability, and corrosion resistance in high-reliability applications. It complies with JEDEC J-STD-020 moisture sensitivity Level-2 and is distinct from standard NIPDAU finishes used in non-G4 variants like OPA2369AIDGKT.
How does the zero-crossover feature improve performance over conventional rail-to-rail op amps?
The zero-crossover feature in the OPA2369AIDGKTG4 eliminates the input-stage crossover distortion that occurs in complementary differential pairs when the common-mode voltage crosses mid-supply. This results in continuous, linear transfer characteristics from V– to V+, enabling accurate amplification of signals near ground or VCC-such as thermocouple outputs or battery monitor thresholds-without added error or calibration overhead.
OPA2369AIDGKTG4 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:
- Discontinued at Digi-Key
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.005V/µs
- Gain Bandwidth Product:
- 12 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 10 pA
- Voltage - Input Offset:
- 250 µV
- Current - Supply:
- 700nA (x2 Channels)
- Current - Output / Channel:
- 10 mA
- Voltage - Supply Span (Min):
- 1.8 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-VSSOP
OPA2369AIDGKTG4 FAQ
1.How can I place an order for OPA2369AIDGKTG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2369AIDGKTG4 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 OPA2369AIDGKTG4 reliable?
The price and inventory of OPA2369AIDGKTG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2369AIDGKTG4 is usually 5 days.
3.What payment methods are accepted for OPA2369AIDGKTG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2369AIDGKTG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2369AIDGKTG4?
OPA2369AIDGKTG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2369AIDGKTG4 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 OPA2369AIDGKTG4?
For technical support, including OPA2369AIDGKTG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2369AIDGKTG4 requirements.
6.How does Aetrix verify that OPA2369AIDGKTG4 is sourced from the original manufacturer or authorized distributors?
All OPA2369AIDGKTG4 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 OPA2369AIDGKTG4 meets industry standards.
7.What is the process for return or replacement of OPA2369AIDGKTG4?
All OPA2369AIDGKTG4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA2369AIDGKTG4, 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 OPA2369AIDGKTG4 part is unused and in its original packaging.
Return procedure for OPA2369AIDGKTG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA2369AIDGKTG4 Tags
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