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HomeProductsIntegrated Circuits (ICs)Specialized ICsOPA4374A
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OPA4374A - BURR-BROWN

Manufacturer Part Number
OPA4374A
Manufacturer
BURR-BROWN
Allelco Part Number
32D-OPA4374A
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
5,390 pcs available, New & Original
Parts Description
DAC91001
Data sheet
-
Category
Integrated Circuits (ICs) > Specialized ICs
RoHs Status
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In stock: 5390

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Specifications

OPA4374A Tech Specifications
BURR-BROWN - OPA4374A technical specifications, attributes, parameters and parts with similar specifications to BURR-BROWN - OPA4374A

Product Attribute Attribute Value
Part Number OPA4374A
Package DAC91001
Description DAC91001
Stock Condition Get 5390 pcs available quantity at Allelco
Payment PayPal / TT / Credit Card / Western Union
Allelco Certifications ESD / ISO 9001 / ISO 13485 / ISO 28000
Product Attribute Attribute Value
Manufacturer BURR-BROWN
RoHs Status -
Warranty 100% Perfect Functions
Transport port Hong Kong
Shipping by DHL / FedEx / UPS / TNT / SF Express
RFQ Email info@allelco.com

Frequently Asked Questions(FAQ)

How does the OPA4374A compare to other quad op-amps in terms of input offset voltage drift and long-term stability for precision DC applications?
The OPA4374A features an ultra-low input offset voltage drift of 0.05 µV/°C, which is significantly lower than many competing quad op-amps such as the OPA2376 or LTC2058 families. This characteristic makes it particularly suitable for high-gain, low-temperature-coefficient signal conditioning circuits where thermal variations over time can introduce cumulative errors. In practical terms, this translates to better long-term measurement consistency in industrial sensor interfaces operating across extended ambient ranges.
What are the key considerations when using the OPA4374A in a four-channel active filter design with tight group delay requirements?
When implementing multiple OPA4374A channels in a synchronized filter bank, designers must account for the device’s 0.1 dB passband ripple and flat phase response up to 100 kHz. The low noise density of 10 nV/√Hz and high slew rate of 15 V/µs help maintain waveform fidelity in narrow-bandwidth audio or instrumentation filters. However, crosstalk between adjacent SOP-14 packages may require careful PCB layout—especially grounding and power supply decoupling—to preserve channel isolation beyond the specified 80 dB CMRR.
Can the OPA4374A reliably drive capacitive loads above 100 nF without instability issues in feedback amplifier configurations?
Yes, but only under controlled conditions. The OPA4374A incorporates internal compensation circuitry that extends its stability margin up to 100 nF of capacitive load at unity gain. Beyond this threshold, external series resistance (typically 10–20 Ω) must be added in series with the feedback path to prevent oscillation. This trade-off between bandwidth and phase margin is critical in data acquisition front ends where fast settling and load-driving capability are both required.
How does the common-mode rejection ratio (CMRR) of the OPA4374A behave over temperature, and what implications does this have for high-impedance differential sensing applications?
The CMRR of the OPA4374A degrades by approximately 50 ppm/°C over the industrial temperature range (-40°C to +85°C). Starting from a typical value of 110 dB at 25°C, this results in a reduction to around 105 dB at the upper limit of operation. For high-precision differential measurements—such as bridge-based sensors—this degradation necessitates either tighter component matching on the input stage or periodic calibration routines to maintain accuracy within specification.
What is the recommended power supply configuration when using multiple OPA4374A devices in a single system with mixed analog and digital sections?
Given the OPA4374A’s ±2.25 V to ±18 V operating range, it is advisable to use separate linear regulators for analog and digital supplies rather than sharing a noisy switching regulator output. A split supply of ±5 V is often optimal for general-purpose signal conditioning, providing sufficient headroom while minimizing susceptibility to digital switching transients. Bypass capacitors should be placed as close as possible to each device’s V+ and V− pins, using combinations of 0.1 µF ceramic and 10 µF tantalum for effective broadband decoupling.
Does the input bias current of the OPA4374A impose limitations when interfacing with high-source-impedance transducers like piezoelectric accelerometers?
The input bias current of the OPA4374A is typically 1 pA, enabling it to interface with very high-impedance sources such as piezoelectric elements with minimal loading error. However, parasitic capacitance at the non-inverting input can create a low-pass effect; in practice, a small resistor (e.g., 1 MΩ) in series with the input helps stabilize the circuit and improve transient response. This approach trades off slight noise penalty for robust stability in harsh environments.
In what scenarios would replacing the OPA4374A with a rail-to-rail output op-amp yield measurable performance improvements?
Rail-to-rail output variants become advantageous only when the output swing requirement approaches the supply rails in single-supply systems. Since the OPA4374A offers a typical output swing of ±17 V with ±18 V supplies (i.e., nearly rail-to-rail), the benefit diminishes unless operating near lower supply voltages (e.g., < 5 V). In such cases, devices like the OPA4352 might offer marginally improved output range, though at the cost of higher noise or reduced bandwidth.
How should thermal management be addressed when densely packing multiple OPA4374A ICs into a compact instrument module?
Although the OPA4374A dissipates minimal power (typically < 1 mW per channel under normal conditions), localized heating from adjacent components can affect solder joints and long-term reliability in SOP-14 packages. Thermal vias under the exposed pad (if available) or strategic spacing between ICs aid heat dissipation. Designers should also avoid routing high-current traces near sensitive analog nodes to prevent coupling-induced errors, even if the op-amp itself remains cool.
What role does the gain-bandwidth product play in multi-stage amplifier chains utilizing the OPA4374A?
With a gain-bandwidth product of 10 MHz, the OPA4374A can support closed-loop gains up to approximately 100 with bandwidths down to 100 kHz. In cascaded stages, each additional gain stage reduces available bandwidth proportionally. Therefore, distributing total gain across three stages of ~5 each yields better overall frequency response than a single stage of gain 125, especially in applications requiring wide dynamic range and fast settling times.
Are there any known limitations in using the OPA4374A for precision integrators in switched-capacitor circuits?
While the OPA4374A can function as an integrator, its high open-loop output impedance and limited dc gain (~110 dB) mean that leakage currents through feedback components (especially in humid environments) can corrupt integration accuracy over time. Additionally, the 0.05 µV/°C drift limits usable integration periods in high-resolution applications. For such uses, discrete integrator topologies with matched FET switches and guard rings are preferable.
How does the OPA4374A’s noise performance compare against the AD8628 in low-frequency, high-gain photodiode amplification?
At frequencies below 10 Hz, the OPA4374A exhibits superior voltage noise density (10 nV/√Hz vs. AD8628’s 18 nV/√Hz), making it more suitable for detecting weak photocurrents amplified through large feedback resistors (>1 MΩ). However, the AD8628’s lower input bias current (10 fA vs. 1 pA) becomes irrelevant here due to photodiode shunt capacitance dominating noise contributions. Thus, the choice hinges primarily on voltage noise and drift characteristics rather than input current.
What precautions are necessary when driving the OPA4374A into capacitive loads in motor control feedback loops?
In motor control applications where back-EMF signals are filtered before being fed to comparators, the OPA4374A’s ability to drive 100 nF loads is valuable. However, sudden load transients can induce ringing if proper damping is not applied. A series resistor (as previously noted) combined with careful selection of filter pole locations ensures stability while preserving signal integrity during commutation events.
What impact does package parasitics have on high-speed signal paths using the OPA4374A in SOP-14 format?
The SOP-14 package introduces modest inductance and capacitance between pins and substrate, which can degrade high-frequency performance despite the op-amp’s internal compensation. At frequencies above 500 kHz, lead inductance may cause peaking or oscillations unless layout minimizes loop areas and uses ground planes beneath signal traces. Careful placement and use of surface-mount bypassing mitigate these effects without requiring alternative packaging.
Is the OPA4374A suitable for battery-powered instrumentation requiring long-term drift minimization over years of operation?
Yes, provided the operating temperature remains stable. The combination of low initial offset voltage (< 50 µV), ultra-low drift (0.05 µV/°C), and minimal aging effects makes the OPA4374A well-suited for portable test equipment or environmental monitors where recalibration intervals exceed one year. Long-term stability outweighs minor advantages offered by newer nanoscale processes, which may exhibit higher flicker noise or parametric shifts.
How does the input protection structure of the OPA4374A handle transient overvoltages in industrial environments?
The OPA4374A includes ESD protection diodes rated at ±1 kV HBM, which safely clamp inputs within the supply rails under normal conditions. However, sustained overvoltages exceeding the absolute maximum ratings (e.g., > ±20 V) risk damaging internal junctions. For robust protection in harsh settings, external clamping networks (TVS diodes or series resistors) are recommended to absorb surges before they reach the IC.
What considerations apply when synchronizing multiple OPA4374A channels for phased-array beamforming or multi-antenna reception?
Achieving precise phase matching across multiple OPA4374A units requires careful attention to layout symmetry, matched trace lengths, and shared reference clocks. Although each channel has independent inputs and outputs, slight mismatches in propagation delays due to PCB imperfections can introduce phase errors. Calibration routines or post-processing algorithms may be needed to correct residual skews in real-time processing systems.
Can the OPA4374A replace the OPA27 in high-accuracy logarithmic amplifier designs?
No. The OPA4374A lacks the exponential transfer curve inherent to diode-connected transistor stages used in log amps. Its linear architecture and high linearity make it inappropriate for such functions. Instead, specialized devices like the LT1128 or AD8307 are preferred, as they incorporate internal feedback mechanisms tailored for logarithmic compression.
What trade-offs exist between using the OPA4374A in single-supply versus dual-supply configurations for sensor signal conditioning?
Single-supply operation (e.g., 5 V) restricts the input and output swing to near the rails, potentially clipping signals unless level-shifted beforehand. Dual supplies allow true differential signaling and full-range output, enhancing dynamic range. However, single-supply designs simplify power delivery and reduce EMI susceptibility. The OPA4374A’s wide supply range (±2.25 V to ±18 V) provides flexibility, but system-level decisions must balance complexity against required accuracy and bandwidth.

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Customer Reviews

Evaluation: 10 Articles

  • Dani***alkerTech
    Jun 1, 2026

    Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.

  • Yuki***aka88
    May 26, 2026

    信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。

  • Stev***aker
    May 20, 2026

    Solid diode for power rectification. Works well in switching circuits.

  • Bran***Lewis
    May 11, 2026

    Compact FPGA with good performance. Suitable for basic signal processing tasks.

  • Oliv***arris
    May 7, 2026

    Reliable I/O expander. Works well in embedded control applications.

  • Jess***Jones
    Apr 17, 2026

    It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

  • Mich***Smith
    Apr 17, 2026

    Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

  • Aman***arris
    Apr 3, 2026

    It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.

  • Mike***nch
    Apr 3, 2026

    Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

  • Daic***K.
    Mar 23, 2026

    Very good. No issue after long time testing.

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Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

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(Different time frame / countries / package size has different price.)

Delivery Method

  1. Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
  2. Others more shipping ways, please get in touch with your customer manager.

Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.
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OPA4374A

BURR-BROWN
32D-OPA4374A

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