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Texas Instruments OPA4377AQPWRQ1
- Part No.:
- OPA4377AQPWRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
OPA4377AQPWRQ1.pdf
- Description:
- IC CMOS 4 CIRCUIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,883
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Product details
Overview
OPA4377AQPWRQ1 from Texas Instruments is a quad-channel, automotive-grade precision operational amplifier optimized for low-noise, low-quiescent-current signal conditioning in battery-powered systems. It delivers 7.5 nV/√Hz input voltage noise at 1 kHz, 250 µV typical offset voltage, 5.5 MHz gain-bandwidth product, rail-to-rail input/output swing, and operates from 2.2 V to 5.5 V single supply - enabling high-fidelity sensor front-ends in active cruise control and tire pressure monitoring.
For engineers reviewing the OPA4377AQPWRQ1 datasheet, OPA4377AQPWRQ1 pinout, OPA4377AQPWRQ1 application, or OPA4377AQPWRQ1 equivalent, this page provides verified technical context, exact pin functions per TSSOP-14 package, real-world automotive use cases, and two validated alternative parts with documented functional and application-level differences.
Technical Context
The OPA4377AQPWRQ1 employs a precision CMOS input stage delivering ultra-low input bias current (±0.2 pA typical) and exceptional dc accuracy (0.32 µV/°C offset drift), while maintaining ac performance via 5.5 MHz GBW and 2 V/µs slew rate. Its internal EMI-rejecting input filter (–3 dB at ~75 MHz) suppresses rectified interference without external components.
It supports true rail-to-rail operation across –40°C to +125°C ambient, with common-mode input range extending 100 mV beyond rails and output swing within 20 mV of rails (at 25°C, RL = 10 kΩ). PSRR exceeds 90 dB up to 100 Hz and remains >60 dB at 100 kHz, ensuring robustness against battery ripple in unregulated automotive supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 5.5 MHz - enables stable unity-gain buffer or closed-loop gain ≥2 configurations up to ~2.75 MHz signal bandwidth |
| Input Voltage Noise | 7.5 nV/√Hz at 1 kHz - preserves SNR in microvolt-level sensor signals (e.g., bridge transducers, thermopiles) |
| Quiescent Current | 760 µA per amplifier - allows four-channel precision amplification within <3.1 mA total, critical for always-on vehicle modules |
| Input Offset Voltage | 250 µV typical - reduces calibration burden in factory-trimmed systems like park assist ultrasonic receivers |
| Supply Voltage Range | 2.2 V to 5.5 V - directly interfaces with 3.3 V or 5 V microcontrollers and operates down to depleted Li-ion (≈2.5 V) |
| Common-Mode Range | (V−) − 0.1 V to (V+) + 0.1 V - accepts inputs beyond rails, simplifying level-shifting in mixed-supply domains |
| Output Swing | Within 20 mV of rails (25°C) - maximizes dynamic range for ADCs with 0–3.3 V or 0–5 V full-scale inputs |
Pinout & Package
TSSOP-14 package (5.00 mm × 4.40 mm body size), thermally enhanced for automotive under-hood environments; 14-pin surface-mount with exposed thermal pad (not electrically connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT A) | Amplifier A output | Drives downstream circuitry (e.g., ADC input, filter stage); rail-to-rail capable, 20 mV headroom |
| 2 (–IN A) | Inverting input, channel A | Accepts feedback network or inverted signal path; matched to +IN A for precision differential gain |
| 3 (+IN A) | Noninverting input, channel A | High-impedance node (0.2 pA bias); used for reference-based sensing or noninverting buffer configuration |
| 4 (V+) | Positive supply rail | Connects to main system rail (2.2–5.5 V); requires local 0.1 µF ceramic bypass to ground |
| 5 (+IN B) | Noninverting input, channel B | Independent high-Z input for second sensor channel; electrically isolated from channel A |
| 6 (–IN B) | Inverting input, channel B | Supports dual-sensor differential pair without cross-talk; same electrical specs as channel A |
| 7 (OUT B) | Amplifier B output | Independent output; no internal connection to OUT A - enables parallel signal paths |
| 8 (OUT C) | Amplifier C output | Third independent output; shares V+ and V− with all channels but has dedicated I/O pins |
| 9 (–IN C) | Inverting input, channel C | Enables three-channel simultaneous acquisition (e.g., 3-axis inertial measurement) |
| 10 (+IN C) | Noninverting input, channel C | Provides third high-precision input node; matches channel A/B offset and noise specs |
| 11 (V−) | Negative supply rail | Ground reference for single-supply operation; must be low-impedance return path |
| 12 (+IN D) | Noninverting input, channel D | Fourth independent input; supports quad-sensor systems (e.g., 4-wheel TPMS analog front-end) |
| 13 (–IN D) | Inverting input, channel D | Completes fourth channel; fully specified over –40°C to +125°C with same dc/ac performance |
| 14 (OUT D) | Amplifier D output | Final independent output; enables full quad-channel signal chain without multiplexing latency |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation, meeting automotive reliability and ESD requirements (HBM ±4 kV, CDM ±1 kV) |
| EMI-hardened input filter | Integrated 75-MHz low-pass filter rejects RF interference from infotainment, cellular, and radar bands without external components |
| Rail-to-rail I/O | Maximizes usable ADC input range in 3.3 V systems; eliminates need for level-shifting or supply boosting |
| Low 0.1–10 Hz noise | 0.8 µVPP enables stable DC-coupled amplification of slow-varying signals (e.g., cabin temperature, brake fluid pressure) |
| Capacitive load drive | Stable with up to 250 pF in unity-gain configuration - supports direct connection to long PCB traces or ADC input capacitance |
Applications
| Active Cruise Control Radar Front-End | Park Assist Ultrasonic Receiver |
|---|---|
Use Scenario: Amplifies weak Doppler-shifted IF signals from 77-GHz radar mixers before digitization. IC Role / Device Role / Timing Role: Quad-channel baseband amplifier providing simultaneous gain, filtering, and DC offset correction for multiple antenna channels. Use Value: 7.5 nV/√Hz noise floor preserves small-signal integrity; 5.5 MHz GBW supports >2 MHz IF bandwidth without phase distortion. |
Use Scenario: Conditions echo-return signals from piezoelectric transducers in rear bumper modules. IC Role / Device Role / Timing Role: Low-drift, low-noise preamplifier with rail-to-rail output driving 12-bit SAR ADCs sampling at 1 MSPS. Use Value: 250 µV offset ensures <±1 cm distance resolution after calibration; 760 µA/channel minimizes heat buildup in sealed enclosures. |
| Tire Pressure Monitoring System (TPMS) | Infotainment Audio Line Driver |
Use Scenario: Amplifies millivolt-level outputs from MEMS pressure sensors inside rotating wheels. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end (configured as difference amp) rejecting common-mode noise on rotating harness. Use Value: 90 dB CMRR maintains accuracy despite 100-mV supply ripple; 2.2 V min supply enables operation during cold cranking. |
Use Scenario: Buffers DAC outputs to analog audio jacks in head units, driving 10-kΩ loads with minimal THD+N. IC Role / Device Role / Timing Role: Unity-gain line driver with 0.00027% THD+N at 1 kHz, preserving audio fidelity across temperature. Use Value: Rail-to-rail output delivers full 0–3.3 V swing into capacitive loads; 2 V/µs slew rate prevents slew-induced distortion on transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA4187AQPWRQ1 | Zero-drift architecture (0.005 µV/°C offset drift vs. 0.32 µV/°C); higher IQ (1.3 mA/channel); same TSSOP-14 package | Better for µV-level DC stability over temperature (e.g., strain gauge bridges), but higher power limits use in always-on modules | Select OPA4187AQPWRQ1 when sub-µV drift dominates over quiescent current; retain OPA4377AQPWRQ1 for balanced noise/power/accuracy |
| LMV881QDGKRQ1 | Lower GBW (1.5 MHz), higher noise (15 nV/√Hz), smaller SOT-23-6 package (single-channel only) | Suitable for cost-sensitive, lower-bandwidth applications (e.g., basic cabin sensor buffering) where quad integration isn't required | Choose LMV881QDGKRQ1 only for single-channel needs with relaxed ac specs; OPA4377AQPWRQ1 remains optimal for multi-channel, high-fidelity signal chains |
Compared with OPA4187AQPWRQ1 and LMV881QDGKRQ1, the OPA4377AQPWRQ1 uniquely balances 5.5-MHz bandwidth, 7.5-nV/√Hz noise, and 760-µA quiescent current in a quad TSSOP-14 package - making it the preferred choice for automotive sensor fusion requiring simultaneous high-speed, low-noise, and low-power amplification.
Availability
OPA4377AQPWRQ1 is available at Aetrix Electronics and suitable for active cruise control, park assist, tire pressure monitoring, and infotainment audio subsystems requiring stable component supply across automotive production lifecycles.
Supply support for OPA4377AQPWRQ1 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 deep expertise in automotive-grade IC design and AEC-Q100 qualification processes.
The OPAx377-Q1 product line was engineered specifically for precision signal conditioning in automotive safety and comfort systems - emphasizing low noise, rail-to-rail operation, and extended temperature reliability without sacrificing power efficiency.
FAQ
What is the operating temperature range for the OPA4377AQPWRQ1?
The OPA4377AQPWRQ1 is qualified per AEC-Q100 Grade 1, with a guaranteed operating ambient temperature range of –40°C to +125°C. All electrical specifications - including offset voltage, noise, and gain-bandwidth - are fully characterized across this range, making OPA4377AQPWRQ1 suitable for engine bay, transmission, and chassis-mounted automotive applications where thermal stress is extreme.
Does the OPA4377AQPWRQ1 support single-supply operation?
Yes, the OPA4377AQPWRQ1 is explicitly designed for single-supply operation from 2.2 V to 5.5 V. Its rail-to-rail input and output stages allow full-swing signal handling even when V− is connected to ground - a key requirement for battery-powered automotive modules that omit negative supplies to reduce cost and complexity. The OPA4377AQPWRQ1 maintains specified performance down to 2.2 V, supporting operation during cold-cranking events.
What is the maximum capacitive load the OPA4377AQPWRQ1 can drive stably in unity-gain configuration?
In unity-gain (G = +1) configuration, the OPA4377AQPWRQ1 remains stable driving up to 250 pF of pure capacitive load, as confirmed in TI's SBOS797A datasheet Figure 15. For loads exceeding this value - such as long PCB traces or ADC input capacitance combined with stray capacitance - a 10–20 Ω series resistor inserted between the output pin and the load restores phase margin without degrading dc accuracy, provided the parallel resistive load is sufficiently high (>10 kΩ).
How does the EMI rejection feature of the OPA4377AQPWRQ1 work?
The OPA4377AQPWRQ1 integrates an on-die low-pass input filter with a –3 dB cutoff near 75 MHz, providing both common-mode and differential-mode EMI suppression. This filter attenuates high-frequency interference from sources like Bluetooth, LTE, and radar systems before it reaches the input stage, preventing rectification-induced dc offset shifts. Unlike external RC filters, this built-in solution requires no additional board space or component count while maintaining full signal bandwidth below 10 MHz.
Is the OPA4377AQPWRQ1 pin-compatible with other devices in the OPAx377-Q1 family?
No - the OPA4377AQPWRQ1 (TSSOP-14) is not pin-compatible with the OPA377-Q1 (SOT-23-5) or OPA2377-Q1 (VSSOP-8). Each variant uses a different pin count and layout optimized for its channel count: the quad OPA4377AQPWRQ1 dedicates individual pins for all four channels' inputs and outputs, plus shared V+ and V−, resulting in a 14-pin footprint distinct from the 5- and 8-pin packages. Board redesign is required when upgrading from single/dual to quad channel count.
OPA4377AQPWRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- CMOS
- Number of Circuits:
- 4
- 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 (x4 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:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP
OPA4377AQPWRQ1 FAQ
1.How can I place an order for OPA4377AQPWRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA4377AQPWRQ1 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 OPA4377AQPWRQ1 reliable?
The price and inventory of OPA4377AQPWRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA4377AQPWRQ1 is usually 5 days.
3.What payment methods are accepted for OPA4377AQPWRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA4377AQPWRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA4377AQPWRQ1?
OPA4377AQPWRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA4377AQPWRQ1 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 OPA4377AQPWRQ1?
For technical support, including OPA4377AQPWRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA4377AQPWRQ1 requirements.
6.How does Aetrix verify that OPA4377AQPWRQ1 is sourced from the original manufacturer or authorized distributors?
All OPA4377AQPWRQ1 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 OPA4377AQPWRQ1 meets industry standards.
7.What is the process for return or replacement of OPA4377AQPWRQ1?
All OPA4377AQPWRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with OPA4377AQPWRQ1, 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 OPA4377AQPWRQ1 part is unused and in its original packaging.
Return procedure for OPA4377AQPWRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA4377AQPWRQ1 Tags
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