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Texas Instruments OPA2369AIDGKR
- Part No.:
- OPA2369AIDGKR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
OPA2369AIDGKR.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,787
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Product details
Overview
OPA2369AIDGKR 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 rail-to-rail input distortion-enabling precision signal conditioning in medical sensors and portable instrumentation.
For engineers reviewing the OPA2369AIDGKR datasheet, OPA2369AIDGKR pinout, OPA2369AIDGKR application, or OPA2369AIDGKR equivalent, key selection criteria include its sub-1µA/channel supply current, true rail-to-rail I/O swing down to 10mV from rails (RL = 100kΩ), low 0.4µV/°C offset drift, and VSSOP-8 package compatibility with space-constrained PCB layouts.
Technical Context
The OPA2369AIDGKR implements a zero-crossover input stage that eliminates the offset discontinuity typical of complementary-input rail-to-rail op amps below 3V supply, ensuring monotonic common-mode response across the full (V−) to (V+) range. Its CMRR remains ≥114dB over temperature and supply voltage, supporting high-accuracy DC-coupled sensing.
Designed for micro-power operation, it features 10pA typical input bias current, 134dB open-loop gain (AOL), and 106dB PSRR-enabling stable performance in low-noise, high-impedance sensor front-ends where power budget and DC precision are critical constraints.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 1.8V to 5.5V - supports direct connection to single-cell Li-ion, alkaline, or coin-cell batteries without regulation. |
| Quiescent Current | 0.7µA per channel - enables multi-year operation in always-on wearable health monitors. |
| Input Offset Voltage | 250µV max - ensures ≤0.025% error in 10-bit ADC interfaces at 2.5V full-scale. |
| Gain-Bandwidth Product | 12kHz - sufficient for DC–100Hz biosignal amplification (ECG, EEG) with stable unity-gain configuration. |
| CMRR | 114dB - rejects >500,000:1 common-mode interference in bridge-based strain gauge circuits. |
| Output Swing | 10mV from rail (RL = 100kΩ) - maximizes dynamic range in low-voltage data acquisition systems. |
| Offset Drift | 0.4µV/°C - contributes <1.2µV total drift over 0°C–70°C ambient, critical for uncalibrated field instruments. |
Pinout & Package
VSSOP-8 (DGK) package: 3.0mm × 3.0mm body, 0.65mm lead pitch, 1.1mm max height, exposed thermal pad (non-electrical), RoHS-compliant NiPdAu finish, MSL Level-2-260°C-1 year.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input A | High-impedance node for feedback network connection; accepts signals from (V−) to (V+). |
| 2 | Non-inverting Input A | High-impedance node for reference or sensor input; rail-to-rail common-mode range. |
| 3 | Output A | Capable of sourcing/sinking 10mA; swings within 10mV of supply rails under light load. |
| 4 | V− | Negative supply terminal; must be connected to system ground or negative rail. |
| 5 | V+ | Positive supply terminal; accepts 1.8V–5.5V; requires 0.1µF bypass capacitor. |
| 6 | Non-inverting Input B | Independent high-impedance input for second channel; identical specs to Pin 2. |
| 7 | Inverting Input B | Independent high-impedance input for second channel; identical specs to Pin 1. |
| 8 | Output B | Independent output for second channel; fully isolated from Output A (140dB channel separation). |
Key Features
| Feature | Design Value |
|---|---|
| Zero-Crossover Input Stage | Eliminates input offset discontinuity at rail transitions, enabling accurate DC measurement across full input common-mode range. |
| Rail-to-Rail I/O | Supports signal acquisition from 0V to VS without clipping-critical for single-supply sensor interfaces. |
| Ultra-Low Quiescent Current | 0.7µA per channel allows integration into energy-harvesting nodes with µW-level power budgets. |
| Low Input Bias Current | 10pA typical enables use with high-impedance pH electrodes, photodiode transimpedance stages, and piezoelectric sensors. |
| High DC Precision | 134dB AOL and 114dB CMRR ensure stable closed-loop gain accuracy in precision instrumentation amplifiers. |
Applications
| Battery Voltage Monitoring | Portable Medical Sensor Front-End |
|---|---|
Use Scenario: Real-time monitoring of single-cell Li-ion or alkaline battery voltage in IoT edge nodes to trigger low-battery alerts before cutoff. IC Role / Device Role / Timing Role: Dual op amp configured as comparator with hysteresis (A1) and reference buffer (A2) to detect thresholds at 2.0V and 2.4V. Use Value: Sub-1µA total quiescent current extends battery life beyond 5 years in sleep-mode operation while maintaining ±50mV hysteresis stability. | Use Scenario: Amplifying weak DC-coupled bio-potential signals (e.g., skin temperature or galvanic skin response) in wearable patches. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier using both channels for matched gain and offset rejection. Use Value: 0.4µV/°C offset drift and 114dB CMRR minimize thermal drift-induced baseline wander in uncalibrated clinical-grade measurements. |
| Low-Power Window Comparator | Micro-Power Bridge Amplifier |
Use Scenario: Detecting out-of-range pressure or gas concentration in battery-operated environmental sensors using dual-threshold logic. IC Role / Device Role / Timing Role: Dual op amp implementing window comparator topology with discrete diode steering (IN4446) and NPN output stage. Use Value: 700nA/channel operation enables continuous monitoring with <2µA total supply current, eliminating need for wake-up cycles. | Use Scenario: Signal conditioning for resistive bridge sensors (e.g., load cells or strain gauges) in handheld industrial testers. IC Role / Device Role / Timing Role: Single-op-amp difference amplifier configuration with external gain-setting resistors. Use Value: Rail-to-rail output swing preserves full 1.8V supply headroom, delivering maximum SNR to downstream 12-bit SAR ADCs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-power precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2365AIDGKR | 20MHz GBW, 500µA IQ, no zero-crossover - higher speed but 700× greater supply current. | Suitable for AC-coupled sensor interfaces requiring bandwidth >100kHz; not viable for multi-year battery life. | Select when bandwidth >10kHz is required and power budget allows ≥500µA/channel. |
| LTC2050CMS8#TRPBF | Zero-drift architecture, 1.5µA IQ, 10µV max VOS - lower offset but 2× higher quiescent current than OPA2369AIDGKR. | Better for µV-level DC stability in calibration equipment; less optimal for sub-µA always-on nodes. | Select when offset voltage <50µV is mandatory and 1.5µA IQ is acceptable in the system power budget. |
Compared with OPA2369AIDGKR, OPA2365AIDGKR trades ultra-low power for wideband performance, while LTC2050CMS8#TRPBF prioritizes near-zero offset at the cost of higher current-making OPA2369AIDGKR the optimal choice for DC-precision, multi-year battery applications where 12kHz bandwidth suffices.
Availability
OPA2369AIDGKR is available at Aetrix Electronics and suitable for battery voltage monitoring, portable medical sensor front-ends, low-power window comparators, and micro-power bridge amplifiers requiring stable component supply across long-lifecycle industrial and healthcare programs.
Supply support for OPA2369AIDGKR 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 OPA2369AIDGKR belongs to TI's nanoPOWER precision op amp family, engineered specifically for battery-powered instrumentation where sub-1µA operation, rail-to-rail functionality, and DC accuracy must coexist without compromise.
FAQ
What is the maximum operating temperature range for the OPA2369AIDGKR?
The OPA2369AIDGKR is specified for operation from –40°C to +85°C ambient temperature, with an extended survival range up to +125°C. This makes it suitable for deployment in consumer wearables, industrial handheld tools, and automotive cabin-sensing modules where thermal robustness is required without active cooling.
Does the OPA2369AIDGKR require external compensation for unity-gain stability?
No, the OPA2369AIDGKR is internally compensated and stable at unity gain (G = +1). Its 12kHz gain-bandwidth product and 0.005V/µs slew rate are designed for predictable behavior in standard non-inverting and inverting configurations without added capacitors or feedback networks.
Can the OPA2369AIDGKR drive capacitive loads, and if so, what is the limit?
Yes, the OPA2369AIDGKR can drive capacitive loads up to 20pF while maintaining ≤10% overshoot, as verified in Figure 20 of the SBOS414B datasheet. For loads exceeding 20pF, a series isolation resistor (e.g., 10Ω–100Ω) between output and capacitance is recommended to preserve phase margin.
What is the function of the exposed thermal pad on the VSSOP-8 (DGK) package of the OPA2369AIDGKR?
The exposed thermal pad on the OPA2369AIDGKR's DGK package is electrically isolated and intended solely for thermal conduction-not for grounding or signal connection. It must be soldered to a dedicated copper pour on the PCB to improve heat dissipation and maintain junction temperature within safe limits during sustained output current.
How does the zero-crossover feature of the OPA2369AIDGKR improve performance in rail-to-rail input applications?
The zero-crossover feature eliminates the input offset voltage discontinuity that occurs in conventional complementary-input op amps when the common-mode voltage crosses mid-supply. In the OPA2369AIDGKR, this ensures monotonic, distortion-free transfer characteristics across the full (V−) to (V+) range-critical for accurate DC measurement in low-voltage (<3V) sensor interfaces where traditional rail-to-rail op amps exhibit crossover glitches.
OPA2369AIDGKR 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:
- 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
OPA2369AIDGKR FAQ
1.How can I place an order for OPA2369AIDGKR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2369AIDGKR 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 OPA2369AIDGKR reliable?
The price and inventory of OPA2369AIDGKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2369AIDGKR is usually 5 days.
3.What payment methods are accepted for OPA2369AIDGKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2369AIDGKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2369AIDGKR?
OPA2369AIDGKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2369AIDGKR 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 OPA2369AIDGKR?
For technical support, including OPA2369AIDGKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2369AIDGKR requirements.
6.How does Aetrix verify that OPA2369AIDGKR is sourced from the original manufacturer or authorized distributors?
All OPA2369AIDGKR 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 OPA2369AIDGKR meets industry standards.
7.What is the process for return or replacement of OPA2369AIDGKR?
All OPA2369AIDGKR units undergo pre-shipment inspection (PSI). If there is an issue with OPA2369AIDGKR, 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 OPA2369AIDGKR part is unused and in its original packaging.
Return procedure for OPA2369AIDGKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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