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Texas Instruments OPA2377AIDGKT
- Part No.:
- OPA2377AIDGKT
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
OPA2377AIDGKT.pdf
- Description:
- IC CMOS 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:670
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Product details
Overview
OPA2377AIDGKT from Texas Instruments is a dual, rail-to-rail output CMOS operational amplifier optimized for low-voltage, single-supply operation (2.2V to 5.5V), featuring 5.5MHz gain-bandwidth product, 7.5nV/√Hz input voltage noise at 1kHz, 0.2pA typical input bias current, and 1mV maximum offset voltage. It serves as a precision signal conditioner in photodiode preamplifiers and sensor interfaces where low noise and ultra-low input current are critical.
For engineers reviewing the OPA2377AIDGKT datasheet, OPA2377AIDGKT pinout, OPA2377AIDGKT application, or OPA2377AIDGKT equivalent, key selection criteria include its 0.2pA input bias current at 25°C, –40°C to +125°C operating range, VSSOP-8 package with thermal pad connection to V–, and unity-gain stability with EMI input filtering.
Technical Context
The OPA2377AIDGKT implements a CMOS input stage enabling femtoampere-level input bias current and rail-to-rail output swing within 20mV of each supply rail at 10kΩ load. Its internal EMI filtering provides –3dB attenuation at ~75MHz, reducing rectification-induced offset shifts under RF interference.
Designed for single-supply systems, it supports common-mode input voltages extending 100mV beyond both rails (V– – 0.1V to V+ + 0.1V) and delivers 112dB open-loop gain with 70dB minimum CMRR over the full temperature range. Quiescent current is tightly specified at 0.76mA per amplifier at +5.5V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 5.5MHz - enables stable unity-gain buffer or 10× gain amplification up to 550kHz without phase margin loss. |
| Input Bias Current | ±0.2pA (typ) - preserves signal integrity in high-impedance sensor nodes like photodiodes and piezoelectric elements. |
| Input Voltage Noise | 7.5nV/√Hz at 1kHz - ensures minimal contribution to system noise floor in precision analog front-ends. |
| Offset Voltage | 1mV (max) - guarantees ≤10mV output error at 10× gain, suitable for 12-bit ADC driver applications. |
| Supply Voltage Range | 2.2V to 5.5V - operates directly from single Li-ion cells or regulated 3.3V/5V rails without external LDOs. |
| Quiescent Current | 0.76mA per channel (typ) - supports battery-powered instrumentation with sub-1.6mA total draw for dual-channel operation. |
| Operating Temperature | –40°C to +125°C - qualified for industrial control, automotive cabin modules, and harsh-environment sensing. |
Pinout & Package
VSSOP-8 (DGK) package with exposed thermal pad connected internally to V–; 0.65mm pitch, 3.0mm × 3.0mm body size, moisture sensitivity level 2 (260°C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input B (IN−B) | High-impedance CMOS node accepting differential feedback signals for Channel B; requires guarding in PCB layout. |
| 2 | Non-Inverting Input B (IN+B) | High-Z CMOS input for Channel B; common-mode range extends 100mV beyond supply rails. |
| 3 | Output B (OUTB) | Rail-to-rail output capable of sourcing/sinking ±30/–50mA; swings within 20mV of V+ and V– at 10kΩ load. |
| 4 | V– (Ground/–VS) | Power supply return and thermal pad reference; must be low-impedance plane for noise immunity and thermal dissipation. |
| 5 | V+ (+VS) | Positive supply input; requires 0.1µF ceramic bypass capacitor placed adjacent to pin for PSRR optimization. |
| 6 | Non-Inverting Input A (IN+A) | High-Z CMOS input for Channel A; electrically isolated from Channel B with ≥110dB channel separation at DC. |
| 7 | Inverting Input A (IN−A) | Feedback node for Channel A; matched input capacitance (6.5pF diff, 13pF common-mode) minimizes phase error. |
| 8 | Output A (OUTA) | Rail-to-rail output with 150Ω open-loop impedance; stable driving 250pF capacitive loads in unity-gain configuration. |
Key Features
| Feature | Design Value |
|---|---|
| EMI Input Filtering | Integrated 75MHz low-pass filter on both inputs suppresses RF rectification effects that cause offset drift in noisy environments. |
| Rail-to-Rail Output | Swings within 20mV of V+ and V– at 10kΩ load, maximizing dynamic range in 3.3V or lower single-supply systems. |
| Unity-Gain Stable | No external compensation required; maintains ≥45° phase margin across all gains and temperatures per design validation. |
| Low Quiescent Current | 0.76mA per amplifier enables dual-channel operation below 1.6mA total, critical for portable gas sensors and wearables. |
| Wide Supply Range | 2.2V to 5.5V operation eliminates need for dedicated voltage regulators when interfacing with microcontrollers or ADCs. |
Applications
| Photodiode Preamplifier | Piezoelectric Sensor Preamplifier |
|---|---|
Use Scenario: Amplifying weak current from reverse-biased photodiodes in optical smoke detectors or spectrophotometers. IC Role / Device Role / Timing Role: Transimpedance amplifier converting picoamp-level photocurrent into measurable voltage with minimal Johnson-Nyquist noise. Use Value: 0.2pA input bias current prevents signal loss in >1GΩ feedback networks; 7.5nV/√Hz noise ensures SNR >70dB at 1kHz. |
Use Scenario: Conditioning high-impedance charge output from accelerometers or vibration sensors in predictive maintenance systems. IC Role / Device Role / Timing Role: Charge amplifier with ultra-high input impedance preserving piezoelectric signal fidelity across 0.1Hz–10kHz bandwidth. Use Value: CMOS input stage avoids loading of >100pF sensor capacitance; rail-to-rail output drives 12-bit SAR ADC reference ranges directly. |
| Sensor Signal Conditioning | Audio Equipment |
Use Scenario: Front-end amplification for resistive bridge sensors (load cells, strain gauges) in industrial weighing terminals. IC Role / Device Role / Timing Role: Precision instrumentation-grade gain block with low offset drift (<0.32mV/°C) minimizing temperature-induced calibration errors. Use Value: 1mV max offset and 70dB min CMRR reject common-mode noise from 50/60Hz mains coupling in factory floors. |
Use Scenario: Line-level headphone driver or microphone preamp in portable audio codecs and voice-controlled IoT hubs. IC Role / Device Role / Timing Role: Low-distortion buffer (0.00027% THD+N) delivering clean signal to DACs or analog switches without clipping. Use Value: 5.5MHz GBW supports 20kHz audio bandwidth with >60dB gain margin; 2V/ms slew rate prevents slew-induced distortion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual CMOS op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2376AIDGKT | Lower input voltage noise (5.2nV/√Hz), higher quiescent current (0.85mA/ch), same 5.5MHz GBW and VSSOP-8 package. | Better suited for ultra-low-noise audio preamps; less optimal for battery-constrained sensor nodes due to +12% IQ. | Select when noise dominates budget and power is secondary; verify thermal performance at 125°C with higher IQ. |
| MCP6V82-E/MS | Zero-drift architecture (0.25µV max VOS), higher supply current (1.1mA/ch), 10MHz GBW, MSOP-8 package. | Superior dc accuracy for precision weigh scales; higher bandwidth trades off against increased EMI susceptibility vs OPA2377's integrated filter. | Choose for <1µV offset-critical applications; avoid in RF-heavy environments unless external filtering added. |
Compared with OPA2377AIDGKT, OPA2376AIDGKT improves noise by 2.3nV/√Hz at cost of higher supply current, while MCP6V82-E/MS eliminates offset drift but increases power and lacks on-chip EMI rejection-making OPA2377AIDGKT optimal for low-power, noise-sensitive, RF-prone sensor front-ends.
Availability
OPA2377AIDGKT is available at Aetrix Electronics and suitable for photodiode preamplifiers, piezoelectric sensor interfaces, and industrial sensor signal conditioning requiring stable component supply across extended temperature ranges.
Supply support for OPA2377AIDGKT 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 and signal chain solutions.
The OPA377 family-including OPA2377AIDGKT-is designed for low-voltage, single-supply precision analog signal conditioning in battery-powered and space-constrained applications such as portable medical devices and environmental sensors.
FAQ
What is the maximum capacitive load the OPA2377AIDGKT can drive in unity-gain configuration?
The OPA2377AIDGKT can directly drive up to 250pF of pure capacitive load while maintaining stability in unity-gain configuration. For loads exceeding this value, a small series resistor (10Ω to 20Ω) between the output and capacitive load is recommended to preserve phase margin without degrading DC accuracy significantly.
Does the OPA2377AIDGKT support rail-to-rail input operation?
No, the OPA2377AIDGKT features rail-to-rail *output* but not rail-to-rail input. Its input common-mode voltage range extends from (V–) – 0.1V to (V+) + 0.1V, allowing operation within 100mV beyond both supply rails-sufficient for most single-supply configurations but not true rail-to-rail input.
What is the thermal pad connection requirement for the OPA2377AIDGKT in VSSOP-8 package?
The exposed thermal pad on the OPA2377AIDGKT's VSSOP-8 (DGK) package is internally connected to the V– pin. It must be soldered to a low-impedance ground or negative supply plane to ensure proper thermal dissipation and noise immunity-floating or unconnected pads degrade thermal resistance and may cause instability.
How does the EMI input filtering in the OPA2377AIDGKT improve system-level robustness?
The OPA2377AIDGKT integrates an internal ~75MHz low-pass filter on both inputs to attenuate high-frequency electromagnetic interference before rectification occurs at internal junctions. This prevents RF-induced offset shifts-critical in automotive and industrial settings where AM/FM band noise could otherwise corrupt µV-level sensor signals.
Is the OPA2377AIDGKT pin-compatible with other members of the OPA377 family?
Yes, the OPA2377AIDGKT shares identical pinout with the OPA2377AID (SOIC-8) and OPA2377AIDR variants-both in SOIC-8 and VSSOP-8 packages use the same 1–8 pin assignment for IN−B, IN+B, OUTB, V–, V+, IN+A, IN−A, and OUTA. This allows drop-in replacement across package types without PCB redesign.
OPA2377AIDGKT 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:
- 2V/µs
- Gain Bandwidth Product:
- 5.5 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.2 pA
- Voltage - Input Offset:
- 250 µV
- Current - Supply:
- 760µA (x2 Channels)
- Current - Output / Channel:
- 50 mA
- Voltage - Supply Span (Min):
- 2.2 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
OPA2377AIDGKT FAQ
1.How can I place an order for OPA2377AIDGKT through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2377AIDGKT 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 OPA2377AIDGKT reliable?
The price and inventory of OPA2377AIDGKT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2377AIDGKT is usually 5 days.
3.What payment methods are accepted for OPA2377AIDGKT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2377AIDGKT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2377AIDGKT?
OPA2377AIDGKT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2377AIDGKT 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 OPA2377AIDGKT?
For technical support, including OPA2377AIDGKT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2377AIDGKT requirements.
6.How does Aetrix verify that OPA2377AIDGKT is sourced from the original manufacturer or authorized distributors?
All OPA2377AIDGKT 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 OPA2377AIDGKT meets industry standards.
7.What is the process for return or replacement of OPA2377AIDGKT?
All OPA2377AIDGKT units undergo pre-shipment inspection (PSI). If there is an issue with OPA2377AIDGKT, 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 OPA2377AIDGKT part is unused and in its original packaging.
Return procedure for OPA2377AIDGKT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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