OPA4374AIDR - Quad 6.5MHz RRIO Op Amp | Texas Instruments
Teilenummer: OPA4374AIDR ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $1.85 | $1,85 |
| 10 | $1.65 | $16,50 |
| 100 | $1.42 | $142,00 |
| 500 | $1.2 | $600,00 |
| 1.000 | $1.02 | $1.020,00 |
| 2.500 | $0.85 | $2.125,00 |
OPA4374AIDR Übersicht
An operational amplifier (op amp) is a high-gain differential DC-coupled amplifier that uses external feedback to set gain, bandwidth, and transfer characteristics; it is the foundational building block of analog signal chains. Quad op amps integrate four independent amplifiers into a single package, reducing board area and channel-to-channel matching error in multi-channel systems such as sensor arrays, audio front-ends, and active filters. The OPA4374 extends this topology into the CMOS process node, achieving rail-to-rail input and output swing on a single supply up to 5.5V, which maximizes dynamic range in low-voltage designs.
Key specifications include a maximum input offset voltage of 5 mV, a low input bias current of 10 pA maximum, 6.5 MHz unity-gain bandwidth, 5 V/us slew rate, 585 uA per-channel quiescent current, and a CMOS input stage that extends 200 mV beyond both supply rails. The output swings to within 25 mV of either rail at moderate load, and the device operates from a single 2.7V to 5.5V supply, or +/-1.35V to +/-2.75V from split rails. The OPA4374AIDR is specified across the -40C to +125C industrial temperature range and is offered in a 14-pin SOIC (D) package with RoHS-compliant lead-free (Pb-free) matte-tin plating.
Architecturally, the OPA4374 uses a CMOS input differential pair followed by a class-AB output stage that delivers ~30 mA of short-circuit output current and supports capacitive loads up to ~1 nF in unity-gain configurations. The RRIO topology uses complementary N- and P-channel input stages that combine in a summing node to extend the common-mode range beyond the rails, while the output stage uses charge-pump-free rail-sensing to maintain output swing close to both rails. EMI rejection is enhanced by the small input-stage capacitance and the wide GBW relative to typical industrial noise frequencies.
Typical applications include multi-channel sensor signal conditioning, battery-powered instrumentation, active filters, transimpedance amplifiers for photodiodes, and low-side or high-side current sensing. Designers often choose the OPA4374 when four channels, low power, and rail-to-rail swing must coexist in a small industrial footprint. When designing with this device, verify that the input common-mode voltage stays within the specified 200 mV beyond-rail range and ensure the output stage sees a load no smaller than ~2 kOhm to preserve linearity, especially at the top end of the supply.
Drop-in-Alternativen für OPA4374AIDR – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
OPA4374AID
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
OPA4374AIDRG4
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
OPA4354AIDR
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
OPA4348AIDR
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
TSV914AIDT
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
MCP6004-I/SL
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
OPA4374AIDR Grenzwerte & elektrische Eigenschaften
| Number of Channels | 4 (Quad) |
| Amplifier Type | CMOS, Rail-to-Rail Input and Output (RRIO) |
| Gain Bandwidth Product (GBW) | 6.5 MHz |
| Slew Rate | 5 V/us |
| Quiescent Current (per channel) | 585 uA (typ) |
| Supply Voltage Range (single supply) | 2.7 V to 5.5 V |
| Supply Voltage Range (dual supply) | +/-1.35 V to +/-2.75 V |
| Input Offset Voltage (max) | 5 mV |
| Input Bias Current (max) | 10 pA |
| Input Common-Mode Range | 200 mV beyond both rails |
| Output Swing to Rails | Within 25 mV of rails |
| Betriebstemperaturbereich | -40 C to +125 C |
| Gehäuse | 14-pin SOIC (D) |
| Montageart | Surface Mount |
| MSL-Level | 1 (unlimited) |
| Lead Finish | Matte tin (Pb-free) |
| RoHS-Status | Compliant |
OPA4374AIDR Pin-Konfiguration
| Pin 1 | OUT1 — Channel 1 output |
| Pin 2 | IN1- — Channel 1 inverting input |
| Pin 3 | IN1+ — Channel 1 non-inverting input |
| Pin 4 | V+ — Positive supply voltage |
| Pin 5 | IN2+ — Channel 2 non-inverting input |
| Pin 6 | IN2- — Channel 2 inverting input |
| Pin 7 | OUT2 — Channel 2 output |
| Pin 8 | OUT3 — Channel 3 output |
| Pin 9 | IN3- — Channel 3 inverting input |
| Pin 10 | IN3+ — Channel 3 non-inverting input |
| Pin 11 | V- — Negative supply voltage or ground |
| Pin 12 | IN4+ — Channel 4 non-inverting input |
| Pin 13 | IN4- — Channel 4 inverting input |
| Pin 14 | OUT4 — Channel 4 output |
Typische Anwendungen
OPA4374AIDR ist geeignet für 6 Anwendungs: Multi-Channel Sensor Signal Conditioning, Battery-Powered Instrumentation, Active Audio Filters and Crossovers, Transimpedance Amplifiers for Photodiodes, Low-Side Current Sensing in Motor Control, Industrial Process Control Analog Front-Ends.
Multi-Channel Sensor Signal Conditioning
The OPA4374AIDR's quad-channel RRIO architecture makes it ideal for conditioning multiple bridge sensors, thermocouples, or strain gauges simultaneously. Each amplifier delivers 6.5 MHz GBW and 5 V/us slew rate, sufficient for filtering sensor signals up to several hundred kHz while maintaining 0.01% linearity. The 5 mV max input offset voltage and 10 pA bias current preserve low-amplitude sensor accuracy, and rail-to-rail output maximizes dynamic range from a 3.3V or 5V rail. Placing one OPA4374AIDR per PCB quadrant reduces routing complexity in dense multi-sensor industrial modules.
Empfohlen
Battery-Powered Instrumentation
The OPA4374AIDR draws only 585 uA per channel from a 2.7V to 5.5V supply, making it well suited to battery-powered instruments such as handheld multimeters, portable data loggers, and field measurement tools. The wide GBW-to-power ratio (6.5 MHz at 585 uA) outperforms most competing CMOS quad op amps, and the rail-to-rail swing maximizes usable supply range as battery voltage decays. Designers can run all four channels continuously on a single 3.6V LiSOCl2 cell for over a year in low-duty-cycle measurement applications.
Empfohlen
Active Audio Filters and Crossovers
The 6.5 MHz GBW and 5 V/us slew rate of the OPA4374AIDR comfortably support active audio filter designs up to 100 kHz, including Sallen-Key low-pass and multiple-feedback high-pass stages. Four channels per package enable two-way active crossovers or stereo bi-amp filters with a single IC, saving board area in compact speaker designs. The low output impedance drives 600-ohm line inputs directly, while the 25 mV-from-rail output swing preserves headroom in 5V audio paths.
Empfohlen
Transimpedance Amplifiers for Photodiodes
The OPA4374AIDR's 10 pA maximum input bias current and CMOS input stage make it suitable for transimpedance amplification of silicon photodiodes in pulse oximeters, smoke detectors, and optical encoders. With a 1 MOhm feedback resistor, the GBW of 6.5 MHz supports photodiode bandwidths up to ~6.5 kHz, and the low input capacitance minimizes phase margin loss. Four channels per IC support quadrature optical encoder readouts or multi-wavelength absorbance measurements in a compact footprint.
Empfohlen
Low-Side Current Sensing in Motor Control
The OPA4374AIDR's rail-to-rail input range extending 200 mV beyond the negative rail enables accurate low-side current sensing in brushed DC and stepper motor drives where the sense resistor sits near ground. The 6.5 MHz bandwidth amplifies PWM-edge transients with minimal distortion, and four channels support full H-bridge current monitoring in a single IC. Designers achieve sub-1% current-loop accuracy across the 0-5V supply range with proper gain resistor selection.
Empfohlen
Industrial Process Control Analog Front-Ends
The OPA4374AIDR operates reliably from -40C to +125C and integrates four channels for industrial process control front-ends, where it can buffer 4-20 mA current loops, condition thermocouple signals, and drive analog input modules. Its RRIO topology accepts bipolar signals on a single 5V supply with proper biasing, and the 5 mV offset accommodates the 12-bit to 14-bit ADC resolution typical in PLC analog input cards. Single-rail operation simplifies isolated loop power design.
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Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für OPA4374AIDR – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | OPA4374AID | OPA4374AIDRG4 | OPA4354AIDR | OPA4348AIDR | TSV914AIDT | MCP6004-I/SL |
|---|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | STMicroelectronics | Microchip Technology |
| Package | 14-pin SOIC (D) | 14-pin SOIC (D) - same | 14-pin SOIC (D) - same | 14-pin SOIC (D) - same | 14-pin SOIC (D) - same | 14-pin SOIC - same | 14-pin SOIC - same |
| Channels | 4 (Quad) | 4 (Quad) | 4 (Quad) | 4 (Quad) | 4 (Quad) | 4 (Quad) | 4 (Quad) |
| Gain Bandwidth Product | 6.5 MHz | 6.5 MHz | 6.5 MHz | 2.5 MHz | 1 MHz | 8 MHz | 1 MHz |
| Slew Rate | 5 V/us | 5 V/us | 5 V/us | 2 V/us | 0.5 V/us | 4.5 V/us | 0.6 V/us |
| Quiescent Current (per channel) | 585 uA | 585 uA | 585 uA | 150 uA | 45 uA | 1.1 mA max | 100 uA |
| Input Offset Voltage (max) | 5 mV | 5 mV | 5 mV | 8 mV | 5 mV | 4.5 mV | 4.5 mV |
| Supply Voltage Range | 2.7V to 5.5V | 2.7V to 5.5V | 2.7V to 5.5V | 2.5V to 5.5V | 2.1V to 5.5V | 2.5V to 5.5V | 1.8V to 6.0V |
| Rail-to-Rail I/O | Yes (RRIO) | Yes (RRIO) | Yes (RRIO) | Yes (RRIO) | Yes (RRIO) | Yes (RRIO) | Yes (RRIO) |
Wichtigste Unterscheidungsmerkmale
- Higher GBW-to-power ratio than OPA4354AIDR (vs. OPA4354AIDR)
- Lower quiescent current than TSV914AIDT (vs. TSV914AIDT)
- Higher slew rate than MCP6004-I/SL (vs. MCP6004-I/SL)
Designhinweise
Place 0.1 uF ceramic bypass capacitors directly between each supply pin (V+ at pin 4, V- at pin 11) and ground, within 2 mm of the IC. Add a 10 uF bulk tantalum or ceramic capacitor on the supply rail near the device. For multi-channel designs where all four amplifiers switch simultaneously, additional supply decoupling may be required to prevent channel-to-channel coupling through the shared supply pin.
Do not apply input voltages more than 200 mV beyond either supply rail; the CMOS input stage uses ESD clamps that will forward-bias and draw excessive current if the input range is exceeded. Also, the output stage does not include short-circuit protection to ground or supply, so adding a series resistor (50-100 Ohm) at the output can limit fault current in harsh industrial environments. Verify load capacitance is below ~1 nF in unity-gain configurations to maintain phase margin.
Keep input traces short and route them away from switching nodes or digital clocks to minimize coupled noise. Use a ground plane beneath the IC and avoid running input traces parallel to output traces of high-gain stages. For instrumentation designs, place the feedback network resistors close to the inverting input pin and keep the non-inverting input ground return path short to avoid ground-loop-induced offset.
Compliance-Informationen
RoHS-compliant per TI product page; lead-free matte-tin finish. Industrial temperature grade -40C to +125C. Not AEC-Q100 qualified; not recommended for automotive safety-critical applications without further qualification.
