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Texas Instruments OPA2369AIDCNRG4
- Part No.:
- OPA2369AIDCNRG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-8
- Datasheet:
-
OPA2369AIDCNRG4.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT SOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:4,809
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Product details
Overview
OPA2369AIDCNRG4 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 in low-voltage sensor signal conditioning.
For engineers reviewing the OPA2369AIDCNRG4 datasheet, OPA2369AIDCNRG4 pinout, OPA2369AIDCNRG4 application, or OPA2369AIDCNRG4 equivalent, this page provides verified electrical specifications, SOT-23-8 package layout, dual-channel precision use cases, and validated alternative options for low-power analog front-end design.
Technical Context
The OPA2369AIDCNRG4 implements a zero-crossover input stage that maintains continuous transconductance across the full rail-to-rail common-mode range (V– to V+), eliminating crossover distortion typical in complementary-input amplifiers below 3V. Its 114dB CMRR and 106dB PSRR ensure stable DC accuracy under supply and common-mode variation.
Designed for micro-power operation, it achieves 0.4µV/°C offset drift and 3.6µVPP (0.1Hz–10Hz) noise while sustaining rail-to-rail output swing within 10mV of each rail at 100kΩ load - critical for single-supply sensor interfaces with limited headroom.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 1.8V to 5.5V - enables direct operation from single-cell Li-ion, alkaline, or coin-cell batteries without regulation. |
| Quiescent Current | 0.7µA per channel - supports multi-year battery life in always-on wearable or IoT sensor nodes. |
| Input Offset Voltage | 250µV (max) - ensures ≤0.025% error in 1V full-scale medical sensor amplification. |
| Gain-Bandwidth Product | 12kHz - sufficient for DC–100Hz physiological signal acquisition (ECG, EEG) with stable unity-gain configuration. |
| CMRR | 114dB - rejects >500kΩ unbalanced source impedance effects in bridge-based strain gauge interfaces. |
| Output Swing | Within 10mV of rails (RL = 100kΩ) - maximizes dynamic range in 1.8V ADC-driven systems. |
| Input Bias Current | 10pA - permits use with >10MΩ sensor elements (e.g., pH electrodes, photodiodes) without significant leakage error. |
Pinout & Package
SOT-23-8 package (DCN), 2.9mm × 2.8mm footprint, 1.1mm max height, exposed pad optional per TI DGK0008A outline. 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 1.8V ADC reference compliance. |
| 2 (–IN A) | Inverting input A | Differential node for precision instrumentation amplifier configurations; 10pA bias enables high-Z sensor coupling. |
| 3 (+IN A) | Non-inverting input A | Accepts signals from 0V to V+; zero-crossover architecture prevents distortion at rail extremes. |
| 4 (V–) | Negative supply | Ground reference for single-supply operation; ties to system GND in 1.8V–5.5V applications. |
| 5 (+IN B) | Non-inverting input B | Independent channel input; enables dual-sensor monitoring (e.g., temperature + humidity) with shared supply. |
| 6 (–IN B) | Inverting input B | Configurable as comparator input or feedback node; supports window comparator topologies per Figure 26. |
| 7 (OUT B) | Amplifier B output | Simultaneous dual-channel output; eliminates need for second discrete op amp in space-constrained designs. |
| 8 (V+) | Positive supply | Accepts 1.8V–5.5V; internal ESD protection clamps inputs to rails ±0.5V. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-crossover input stage | Eliminates discontinuous gm transition at mid-rail, enabling distortion-free amplification of near-rail signals in 1.8V systems. |
| Rail-to-rail I/O | Supports full 0V–1.8V input range and 10mV-from-rail output swing - preserves signal integrity in minimal-headroom battery designs. |
| 700nA per channel IQ | Reduces average current draw to <1.5µA for dual-channel active monitoring, extending CR2032 battery life beyond 5 years. |
| 250µV max VOS | Minimizes calibration burden in portable medical devices where factory trim is impractical. |
| 114dB CMRR | Maintains accuracy when interfacing with high-output-impedance sensors subject to PCB trace imbalance. |
Applications
| Battery Voltage Monitoring | Medical Sensor Signal Conditioning |
|---|---|
Use Scenario: Real-time tracking of lithium coin-cell or alkaline battery voltage in wireless sensor nodes to trigger low-battery alerts before system reset. IC Role / Device Role / Timing Role: Dual op amp configured as precision comparator with hysteresis (A1 = threshold detector, A2 = reference buffer) using internal rail-to-rail inputs. Use Value: 700nA/channel IQ extends monitoring interval to weeks between measurements, while 250µV VOS ensures ±2mV trip-point accuracy at 2.0V threshold. | Use Scenario: Amplifying low-amplitude bio-potential signals (e.g., ECG leads) in portable diagnostic patches powered by single 1.8V cell. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier (dual OPA2369AIDCNRG4 configured per Figure 29) providing gain and common-mode rejection before ADC sampling. Use Value: Zero-crossover architecture prevents distortion on near-rail common-mode signals; 114dB CMRR rejects motion-induced interference without external shielding. |
| Low-Power Window Comparator | IoT Environmental Sensor Interface |
Use Scenario: Detecting out-of-range temperature or gas concentration in battery-operated environmental monitors using dual-threshold logic. IC Role / Device Role / Timing Role: Dual-channel implementation per Figure 26: one amplifier sets upper limit (VH), the other lower limit (VL); outputs drive open-drain logic via diodes. Use Value: Simultaneous dual-channel operation eliminates timing skew between thresholds; 12kHz GBW ensures <100µs response to fast transients. | Use Scenario: Interfacing resistive humidity and thermistor sensors in smart agriculture nodes deployed for seasonal monitoring. IC Role / Device Role / Timing Role: Precision voltage follower (channel A) buffers reference voltage; channel B amplifies ratiometric sensor output with rail-to-rail input range. Use Value: 10pA input bias avoids loading high-resistance (10–100MΩ) humidity elements; 0.4µV/°C drift minimizes temperature-induced calibration drift over field lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual low-power op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2369AIDGKT | VSSOP-8 package (DGK), 12.4mm tape width vs SOT-23-8's 8.4mm; identical electrical specs and marking (OCCQ). | Requires PCB land pattern change; better thermal performance (θJA = 252°C/W vs 223°C/W) for sustained 85°C ambient operation. | Select for higher reliability in thermally constrained enclosures; avoid if SOT-23-8 footprint is fixed. |
| TLV2369IDCNT | Same dual nanoPower architecture but 1.5µA/ch IQ (vs 0.7µA), 350µV VOS (vs 250µV), and no zero-crossover feature. | Higher power consumption limits battery life in always-on applications; crossover distortion degrades accuracy near supply rails. | Choose only if cost sensitivity outweighs precision and ultra-low-power requirements. |
Compared with OPA2369AIDCNRG4, OPA2369AIDGKT offers identical performance in a thermally superior VSSOP package requiring layout revision, while TLV2369IDCNT trades 2.1× higher IQ and reduced rail-rail linearity for lower unit cost in non-critical sensing roles.
Availability
OPA2369AIDCNRG4 is available at Aetrix Electronics and suitable for battery-powered instruments, portable medical devices, and low-power sensor signal conditioning requiring stable component supply across extended production cycles.
Supply support for OPA2369AIDCNRG4 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 over 90 years of innovation in precision analog ICs.
The OPAx369 family was engineered specifically for ultra-low-power, rail-to-rail signal conditioning in energy-harvesting and battery-constrained systems - prioritizing sub-1µA IQ, zero-crossover linearity, and 1.8V operation without performance compromise.
FAQ
What is the maximum operating temperature range for the OPA2369AIDCNRG4?
The OPA2369AIDCNRG4 is specified for operation from –40°C to +85°C ambient temperature, with absolute maximum junction temperature rated at +150°C. Its thermal resistance (θJA) is 223°C/W in the SOT-23-8 package, allowing reliable function in sealed industrial enclosures without forced airflow when power dissipation remains below 1.2mW per channel.
Does the OPA2369AIDCNRG4 support true rail-to-rail input and output operation?
Yes, the OPA2369AIDCNRG4 supports true rail-to-rail input common-mode range (V– to V+) and rail-to-rail output swing within 10mV of each rail at 100kΩ load. Its zero-crossover input stage eliminates the gm discontinuity found in conventional rail-to-rail amplifiers, ensuring linear operation across the entire input range - critical for accurate signal acquisition near supply rails.
Can the OPA2369AIDCNRG4 drive capacitive loads, and what is the recommended compensation?
The OPA2369AIDCNRG4 can drive up to 20pF capacitive loads without oscillation, as verified in Figure 20 of the datasheet. For loads exceeding 20pF, a series resistor (typically 10–50Ω) placed between the output pin and the capacitive node is recommended to isolate the amplifier's output impedance from the load capacitance and maintain phase margin above 45°.
What is the input bias current specification for the OPA2369AIDCNRG4, and how does it affect high-impedance sensor interfaces?
The OPA2369AIDCNRG4 has a typical input bias current of 10pA, with a maximum of 50pA over temperature. This ultra-low value enables direct connection to high-impedance sensors such as pH electrodes (>1GΩ), photodiodes, or thermistors without introducing measurable offset error - for example, a 100MΩ source impedance contributes only 0.5µV of additional offset at 5pA bias.
Is the OPA2369AIDCNRG4 pin-compatible with other members of the OPA369 family?
No, the OPA2369AIDCNRG4 (SOT-23-8) is not pin-compatible with the single-channel OPA369 (SC70-5 or SOT23-5). However, it shares identical electrical behavior and functional pin assignments (V+, OUT A, –IN A, +IN A, +IN B, –IN B, OUT B, V–) with other OPA2369 variants in SOT-23-8 (e.g., OPA2369AIDCNR) and VSSOP-8 (e.g., OPA2369AIDGKR), differing only in package outline and thermal characteristics.
OPA2369AIDCNRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SOT-23-8
- 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:
- SOT-23-8
OPA2369AIDCNRG4 FAQ
1.How can I place an order for OPA2369AIDCNRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2369AIDCNRG4 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 OPA2369AIDCNRG4 reliable?
The price and inventory of OPA2369AIDCNRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2369AIDCNRG4 is usually 5 days.
3.What payment methods are accepted for OPA2369AIDCNRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2369AIDCNRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2369AIDCNRG4?
OPA2369AIDCNRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2369AIDCNRG4 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 OPA2369AIDCNRG4?
For technical support, including OPA2369AIDCNRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2369AIDCNRG4 requirements.
6.How does Aetrix verify that OPA2369AIDCNRG4 is sourced from the original manufacturer or authorized distributors?
All OPA2369AIDCNRG4 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 OPA2369AIDCNRG4 meets industry standards.
7.What is the process for return or replacement of OPA2369AIDCNRG4?
All OPA2369AIDCNRG4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA2369AIDCNRG4, 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 OPA2369AIDCNRG4 part is unused and in its original packaging.
Return procedure for OPA2369AIDCNRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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