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Texas Instruments OPA2377AIDGKR
- Part No.:
- OPA2377AIDGKR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
OPA2377AIDGKR.pdf
- Description:
- IC CMOS 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:12,643
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Product details
Overview
OPA2377AIDGKR 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, and ultra-low 0.2pA typical input bias current - ideal for photodiode preamplification in precision sensor interfaces.
For engineers reviewing the OPA2377AIDGKR datasheet, OPA2377AIDGKR pinout, OPA2377AIDGKR application, or OPA2377AIDGKR equivalent, key selection criteria include its guaranteed 1mV max offset voltage over –40°C to +125°C, EMI input filtering, unity-gain stability, and VSSOP-8 packaging suitable for space-constrained analog front-ends in battery-powered instrumentation.
Technical Context
The OPA2377AIDGKR implements a CMOS input stage with internal electrostatic discharge (ESD) protection on all pins and integrated low-pass filtering for EMI rejection up to 75MHz. Its input common-mode range extends 100mV beyond both supply rails, supporting true single-supply signal conditioning without level-shifting circuitry.
It delivers rail-to-rail output swing within 10mV of each rail (RL = 10kΩ), maintains 112dB open-loop gain, and achieves 0.1% settling in 1.6ms for 2V steps - enabling high-fidelity buffering and active filtering in low-power data acquisition systems where quiescent current is constrained to 0.76mA per amplifier.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 5.5MHz - supports stable closed-loop operation up to 100kHz with gain ≥55, suitable for anti-aliasing filters ahead of 16-bit ADCs like ADS8327. |
| Input Voltage Noise Density | 7.5nV/√Hz at 1kHz - enables sub-microvolt signal amplification in piezoelectric sensor interfaces without dominating system noise floor. |
| Input Bias Current | ±0.2pA (typ) - preserves signal integrity in high-impedance photodiode preamps where leakage would otherwise degrade transimpedance gain accuracy. |
| Offset Voltage (max) | 1mV - ensures ≤0.02% full-scale error in 5V-span industrial sensor outputs without trimming. |
| Supply Voltage Range | 2.2V to 5.5V - allows direct operation from Li-ion cells (3.0–4.2V) or regulated 3.3V/5V rails without LDO overhead. |
| Quiescent Current per Channel | 0.76mA (typ) - enables dual-channel signal conditioning in portable devices with <1.6mA total analog front-end current draw. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive and industrial control applications without derating. |
Pinout & Package
VSSOP-8 (DGK) package: 3.0mm × 3.0mm body, 0.65mm pitch, exposed thermal pad connected to V– for enhanced thermal performance and EMI suppression.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | +IN B | Non-inverting input of Channel B - referenced to V– for single-supply common-mode biasing at VCM = VS/2. |
| 2 | –IN B | Inverting input of Channel B - accepts feedback network for configured gain or transimpedance conversion. |
| 3 | OUT B | Output of Channel B - rail-to-rail capable, drives 10kΩ load to within 10mV of supply rails. |
| 4 | V– | Negative supply terminal - also serves as thermal die connection point; must be low-impedance to ground. |
| 5 | V+ | Positive supply terminal - requires 0.1µF ceramic bypass capacitor placed adjacent to pin. |
| 6 | –IN A | Inverting input of Channel A - electrically isolated from Channel B; supports independent feedback paths. |
| 7 | +IN A | Non-inverting input of Channel A - shares same input stage architecture and EMI filtering as Pin 1. |
| 8 | OUT A | Output of Channel A - exhibits channel separation >100dB at 1kHz, minimizing crosstalk in dual-path signal chains. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output | Swings within 10mV of V+ and V– under 10kΩ load - eliminates need for negative supply in single-ended sensor interfaces. |
| EMI input filtering | Integrated 75MHz low-pass filter suppresses RF rectification artifacts from GSM/ISM bands - critical for medical-grade ECG front-ends. |
| Unity-gain stable | No external compensation required for G = +1 buffer configurations - simplifies layout and reduces component count in ADC driver stages. |
| Low input bias current | 0.2pA typical enables >1GΩ source impedance compatibility - essential for high-Z pH electrodes and electret microphone bias networks. |
| Thermal shutdown protection | Internal circuitry disables output above TJ = +150°C - prevents latch-up during transient overload in unventilated enclosures. |
Applications
| Photodiode Preamplifier | Piezoelectric Sensor Preamplifier |
|---|---|
Use Scenario: Amplifying weak current from silicon photodiodes in optical smoke detectors or pulse oximeters. IC Role / Device Role / Timing Role: Transimpedance amplifier converting photocurrent to voltage with minimal input loading and noise. Use Value: 0.2pA input bias current avoids gain error in 1MΩ–100MΩ feedback resistors; 7.5nV/√Hz noise preserves SNR for µA-level signals. |
Use Scenario: Conditioning high-impedance charge output from accelerometers or ultrasonic transducers. IC Role / Device Role / Timing Role: Charge amplifier with selectable gain and bandwidth for vibration monitoring systems. Use Value: Rail-to-rail output maximizes dynamic range across 3.3V supply; 5.5MHz GBW supports resonant frequency detection up to 50kHz. |
| Sensor Signal Conditioning | Audio Equipment |
Use Scenario: Low-noise amplification of millivolt-level thermocouple or RTD bridge outputs in industrial PLC modules. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end with programmable gain and offset correction. Use Value: 1mV max offset voltage limits initial calibration burden; –40°C to +125°C operation ensures field reliability without heater-cooler subsystems. |
Use Scenario: Line-level headphone driver and tone-control stage in portable audio DACs. IC Role / Device Role / Timing Role: Dual-channel buffer and active filter section for left/right stereo paths. Use Value: 0.00027% THD+N at 1kHz ensures transparent audio reproduction; 2V/ms slew rate prevents slew-induced distortion on 20kHz sine waves. |
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 |
|---|---|---|---|
| OPA2377AID | SOIC-8 package (5.0mm × 6.2mm); higher θJA (150°C/W vs. 150°C/W for DGK - identical thermal resistance rating but larger footprint) | Preferred for through-hole prototyping or legacy PCBs with SOIC footprints; less suitable for high-density portable designs. | Select OPA2377AIDGKR when board area is constrained and thermal management relies on V– pad soldering; choose OPA2377AID for manual assembly or rework-friendly layouts. |
| OPA2333AIDGKR | Zero-drift architecture; 0.02µV/°C offset drift vs. 0.32µV/°C for OPA2377AIDGKR; higher 350kHz GBW but lower 0.65µVpp 0.1–10Hz noise | Better for DC-coupled strain gauge bridges requiring long-term zero stability; less optimal for AC-coupled photodiode amps needing wide bandwidth. | Choose OPA2377AIDGKR for cost-sensitive, bandwidth-critical sensor amps; select OPA2333AIDGKR only when microvolt-level drift over temperature is the dominant specification. |
Compared with OPA2377AID and OPA2333AIDGKR, the OPA2377AIDGKR uniquely balances ultra-low input bias current, 5.5MHz bandwidth, and VSSOP-8 compactness - making it the optimal choice for space-limited, battery-operated photodiode and piezo preamplifiers where EMI immunity and rail-to-rail output are mandatory.
Availability
OPA2377AIDGKR is available at Aetrix Electronics and suitable for photodiode preamplification, piezoelectric sensor interfacing, and precision analog front-ends requiring stable component supply across automotive, industrial, and medical device production programs.
Supply support for OPA2377AIDGKR 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 delivering analog and embedded processing solutions, with over 90 years of innovation in precision amplifiers and signal chain components.
The OPA2377AIDGKR belongs to TI's OPA377 family - engineered specifically for low-noise, low-input-bias-current, single-supply operation in sensor signal conditioning, portable instrumentation, and audio applications demanding high ac/dc performance at minimal quiescent power.
FAQ
What is the maximum operating temperature range for the OPA2377AIDGKR?
The OPA2377AIDGKR is fully specified from –40°C to +125°C ambient temperature, with absolute maximum junction temperature rated at +150°C. This extended range supports deployment in under-hood automotive environments and industrial control cabinets without thermal derating, and all electrical parameters in the datasheet apply across this full interval.
Does the OPA2377AIDGKR require external compensation for unity-gain stability?
No, the OPA2377AIDGKR is internally compensated and unity-gain stable. It can be used directly in G = +1 non-inverting buffer configurations without added capacitors or resistors - a key advantage confirmed in the datasheet's "Features" and "Application Information" sections, enabling simplified ADC driver designs.
What is the input common-mode voltage range of the OPA2377AIDGKR?
The OPA2377AIDGKR supports an input common-mode voltage range from (V–) – 0.1V to (V+) + 0.1V - extending 100mV beyond both supply rails. This rail-to-rail input capability allows direct interfacing with sensors whose output swings near the supply boundaries, such as resistive bridge circuits biased at VS/2.
Can the OPA2377AIDGKR drive capacitive loads, and if so, up to how much?
Yes, the OPA2377AIDGKR can directly drive up to 250pF of pure capacitive load in unity-gain configuration while maintaining stability. For heavier loads, adding a 10Ω–20Ω series resistor at the output (as shown in Figure 24 of the datasheet) restores phase margin without compromising DC accuracy in applications like LCD biasing or filter output stages.
Is the OPA2377AIDGKR pin-compatible with other members of the OPA377 family?
The OPA2377AIDGKR uses the standard VSSOP-8 (DGK) pinout shared across TI's dual op-amps in this package, including OPA2333AIDGKR and OPA2340AIDGKR. However, functional differences - such as zero-drift architecture or different bandwidth - mean direct substitution requires verification of signal chain requirements; pinout compatibility does not imply electrical equivalence.
OPA2377AIDGKR 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
OPA2377AIDGKR FAQ
1.How can I place an order for OPA2377AIDGKR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2377AIDGKR 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 OPA2377AIDGKR reliable?
The price and inventory of OPA2377AIDGKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2377AIDGKR is usually 5 days.
3.What payment methods are accepted for OPA2377AIDGKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2377AIDGKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2377AIDGKR?
OPA2377AIDGKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2377AIDGKR 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 OPA2377AIDGKR?
For technical support, including OPA2377AIDGKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2377AIDGKR requirements.
6.How does Aetrix verify that OPA2377AIDGKR is sourced from the original manufacturer or authorized distributors?
All OPA2377AIDGKR 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 OPA2377AIDGKR meets industry standards.
7.What is the process for return or replacement of OPA2377AIDGKR?
All OPA2377AIDGKR units undergo pre-shipment inspection (PSI). If there is an issue with OPA2377AIDGKR, 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 OPA2377AIDGKR part is unused and in its original packaging.
Return procedure for OPA2377AIDGKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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