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Texas Instruments OPA2375IDGKR
- Part No.:
- OPA2375IDGKR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
OPA2375IDGKR.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:7,411
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Product details
Overview
OPA2375IDGKR from Texas Instruments is a dual-channel, rail-to-rail output CMOS operational amplifier optimized for precision low-noise signal conditioning in space- and power-constrained systems. It delivers 3.5 nV/√Hz input voltage noise, 10-MHz gain bandwidth, ±500 µV maximum input offset voltage, and operates from 1.7 V to 5.5 V supply. It serves as an ADC input driver or photodiode transimpedance amplifier in wearable medical sensors.
For engineers reviewing the OPA2375IDGKR datasheet, OPA2375IDGKR pinout, OPA2375IDGKR application, or OPA2375IDGKR equivalent, this page provides verified specifications, VSSOP-8 package details, real-world use cases in precision sensor front-ends and audio equipment, and validated alternative options for design flexibility and supply continuity.
Technical Context
The OPA2375IDGKR implements a unity-gain-stable CMOS input stage with integrated RFI/EMI rejection filtering and no phase reversal under overdrive. Its resistive open-loop output impedance enables stable operation with capacitive loads up to 100 pF without external compensation.
It features robust electrostatic discharge protection (2-kV HBM), low input bias current (±3 pA typical), and ultra-low offset drift (±0.16 µV/°C) across –40°C to +125°C - enabling high-accuracy DC-coupled measurements in industrial and automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth | 10 MHz - supports stable closed-loop operation at unity gain with >55° phase margin into 20-pF load. |
| Input Voltage Noise | 3.5 nV/√Hz at 10 kHz - enables high-fidelity amplification of low-level sensor signals without degrading SNR. |
| Max Input Offset Voltage | ±500 µV - ensures ≤0.5 mV error in 1-V full-scale 12-bit ADC interfaces without trimming. |
| Supply Voltage Range | 1.7 V to 5.5 V - supports direct interfacing with Li-ion battery (3.0–4.2 V), 3.3-V logic, and low-voltage IoT MCUs. |
| Quiescent Current | 990 µA per channel - allows dual-amplifier operation in always-on wearable devices with <2-mA total analog front-end budget. |
| Rail-to-Rail Output | Swings within 5 mV of rails at 10-kΩ load - maximizes dynamic range in single-supply 3.3-V systems. |
| Input Offset Drift | ±0.16 µV/°C - contributes <2 µV total drift over 0–70°C ambient, critical for uncalibrated temperature sensor signal chains. |
Pinout & Package
VSSOP-8 (DGK) package: 3.0 mm × 4.4 mm body, 0.65-mm lead pitch, exposed thermal pad connected to V– for enhanced thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT1 | Amplifier 1 output - drives ADC input or active filter stage; rail-to-rail swing supports full-scale utilization. |
| 2 | IN1– | Inverting input, channel 1 - used in transimpedance or inverting gain configurations; low bias current minimizes leakage error. |
| 3 | IN1+ | Noninverting input, channel 1 - accepts high-impedance sensor outputs (e.g., thermopile, pH electrode) with minimal loading. |
| 4 | V– | Negative supply or ground - thermal pad must be soldered to PCB ground plane for optimal θJA = 177°C/W. |
| 5 | IN2+ | Noninverting input, channel 2 - independent second channel for differential sensing or dual-signal processing. |
| 6 | IN2– | Inverting input, channel 2 - matches IN1– electrical characteristics for matched channel performance. |
| 7 | OUT2 | Amplifier 2 output - enables simultaneous conditioning of two sensor channels without cross-talk (130-dB channel separation). |
| 8 | V+ | Positive supply - accepts 1.7–5.5 V; PSRR of ±0.7 µV/V ensures immunity to digital supply noise. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output | Delivers 5-mV headroom to both rails at 10-kΩ load, preserving >99% of 3.3-V ADC input range. |
| Low broadband noise | 3.5 nV/√Hz at 10 kHz enables sub-µV resolution in photodiode amplifiers with 100-kHz bandwidth. |
| Unity-gain stability | Eliminates need for external compensation components in buffer or gain-of-1 configurations. |
| Integrated EMI rejection | 51-dB EMIRR at 1 GHz suppresses cellular/Wi-Fi interference in portable medical devices. |
| Low input bias current | ±3 pA typical allows use with >1-GΩ source impedances (e.g., glass pH electrodes) without significant offset error. |
Applications
| Photodiode Amplifier | Precision Sensor Front-End |
|---|---|
Use Scenario: Amplifying weak current from silicon photodiodes in pulse oximetry modules. IC Role / Device Role / Timing Role: Transimpedance amplifier converting 100-nA photocurrent to 1-V output with 100-kHz bandwidth. Use Value: 3.5 nV/√Hz noise floor ensures >80-dB SNR at 1-kHz modulation frequency, meeting ISO 80601 clinical accuracy requirements. |
Use Scenario: Conditioning output from MEMS pressure sensors in industrial process controllers. IC Role / Device Role / Timing Role: Low-drift instrumentation amplifier front-end with 0.16 µV/°C offset drift. Use Value: Maintains <0.01% FS error over –25°C to +75°C ambient without calibration, reducing BOM cost and firmware complexity. |
| ADC Input-Driver Amplifier | Wearable Consumer Application |
Use Scenario: Driving SAR ADC inputs in battery-powered data loggers sampling at 1 MSPS. IC Role / Device Role / Timing Role: Unity-gain buffer isolating ADC sample-and-hold from RC filter network. Use Value: 0.65-µs 0.1% settling time ensures full accuracy at 1-MSPS rates; rail-to-rail output avoids clipping on 3.3-V supplies. |
Use Scenario: Biopotential signal acquisition (ECG/EMG) in compact fitness trackers. IC Role / Device Role / Timing Role: First-stage gain and filtering for dry-electrode bio-signal paths. Use Value: 990 µA/channel quiescent current enables dual-channel analog front-end operation within 2.5-mA system budget for 7-day battery life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2376IDGKR | Lower noise (2.8 nV/√Hz), higher IQ (1.3 mA/ch), same VSSOP-8 package and pinout. | Better suited for ultra-low-noise photodiode amps where power budget allows +30% IQ increase. | Select when noise dominates error budget and supply headroom permits higher current draw. |
| MCP6V82-E/SN | Zero-drift architecture (0.01 µV/°C drift), higher offset voltage (±150 µV max), SOIC-8 only. | Preferred for DC-critical applications like weigh scales requiring near-zero long-term drift. | Choose for sub-µV/°C drift requirements; accept larger initial offset and no VSSOP option. |
Compared with OPA2375IDGKR, OPA2376IDGKR trades lower noise for higher quiescent current, while MCP6V82-E/SN replaces broadband noise performance with near-zero drift - making each suitable for distinct precision priorities: noise-limited vs drift-limited signal chains.
Availability
OPA2375IDGKR is available at Aetrix Electronics and suitable for photodiode amplifiers, precision sensor front-ends, and ADC input-driver amplifiers requiring stable component supply across industrial, medical, and consumer electronics programs.
Supply support for OPA2375IDGKR 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 signal-chain solutions.
The OPAx375 family was designed for cost-sensitive, low-power precision applications demanding low noise, rail-to-rail output, and wide supply range - targeting portable instrumentation, sensor interfaces, and battery-operated measurement systems.
FAQ
What is the maximum operating temperature range for the OPA2375IDGKR?
The OPA2375IDGKR is specified over an operating ambient temperature range of –40°C to +125°C. This extended range supports deployment in automotive engine compartments, industrial PLCs, and outdoor environmental sensors where thermal extremes are common. All key parameters - including offset voltage, gain bandwidth, and noise - are guaranteed across this full range.
Does the OPA2375IDGKR include shutdown functionality?
No, the OPA2375IDGKR (VSSOP-8 DGK package) does not include shutdown pins. Shutdown capability is only present in the OPA2375S variants (e.g., OPA2375SRUGR in X2QFN-10), which feature dedicated SHDN1/SHDN2 pins. The OPA2375IDGKR operates continuously when powered and requires external power gating for low-power states.
Can the OPA2375IDGKR drive a 100-pF capacitive load stably?
Yes, the OPA2375IDGKR maintains stability with capacitive loads up to 100 pF in unity-gain configuration, as confirmed by overshoot testing in the datasheet (Figure 7-25). Its resistive open-loop output impedance eliminates the need for isolation resistors, simplifying layout in ADC driver and filter applications where board space is constrained.
What is the typical input bias current of the OPA2375IDGKR at 25°C?
The typical input bias current of the OPA2375IDGKR is ±3 pA at 25°C, with a maximum of ±10 pA over temperature. This ultra-low bias current enables accurate amplification of high-impedance sources such as piezoelectric sensors, pH electrodes, and photodiodes without introducing significant input error voltage or leakage-induced drift.
Is the OPA2375IDGKR pin-compatible with other dual op amps in VSSOP-8 packages?
The OPA2375IDGKR uses the industry-standard VSSOP-8 pinout (IN1–, IN1+, V–, IN2+, IN2–, OUT2, OUT1, V+), matching common dual op amps like the TLV2372 and OPA2340. However, functional compatibility requires verification of supply range, noise, and bandwidth - as the OPA2375IDGKR's 10-MHz GBW and 3.5-nV/√Hz noise exceed those of many legacy VSSOP-8 op amps.
OPA2375IDGKR 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:
- 4.6V/µs
- Gain Bandwidth Product:
- 10 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 3 pA
- Voltage - Input Offset:
- 150 µV
- Current - Supply:
- 990µA (x2 Channels)
- Current - Output / Channel:
- 68 mA
- Voltage - Supply Span (Min):
- 1.7 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-VSSOP
OPA2375IDGKR FAQ
1.How can I place an order for OPA2375IDGKR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2375IDGKR 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 OPA2375IDGKR reliable?
The price and inventory of OPA2375IDGKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2375IDGKR is usually 5 days.
3.What payment methods are accepted for OPA2375IDGKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2375IDGKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2375IDGKR?
OPA2375IDGKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2375IDGKR 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 OPA2375IDGKR?
For technical support, including OPA2375IDGKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2375IDGKR requirements.
6.How does Aetrix verify that OPA2375IDGKR is sourced from the original manufacturer or authorized distributors?
All OPA2375IDGKR 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 OPA2375IDGKR meets industry standards.
7.What is the process for return or replacement of OPA2375IDGKR?
All OPA2375IDGKR units undergo pre-shipment inspection (PSI). If there is an issue with OPA2375IDGKR, 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 OPA2375IDGKR part is unused and in its original packaging.
Return procedure for OPA2375IDGKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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