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HomeProductsIntegrated Circuits (ICs)Linear - Amplifiers - Instrumentation, OP Amps, Buffer AmpsOPA657N/250
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OPA657N/250 - Texas Instruments

Manufacturer Part Number
OPA657N/250
Manufacturer
Texas Instruments
Allelco Part Number
32D-OPA657N/250
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
3,326 pcs available, New & Original
Parts Description
IC OPAMP VFB 1 CIRCUIT SOT23-5
Package
SOT-23-5
Data sheet
-
RoHs Status
ROHS3 Compliant
Compare
Our certification
In stock: 3326
  • Unit Price: $7.706
  • Subtotal: $0.00

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Add to Cart and Submit RFQ now, we'll contact you immediately.

Quantity Unit Price Ext. Price
1+ $7.706 $7.71
10+ $7.388 $73.88
30+ $6.835 $205.05
100+ $6.353 $635.30
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

OPA657N/250 Tech Specifications
Texas Instruments - OPA657N/250 technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments - OPA657N/250

Product Attribute Attribute Value
Manufacturer Texas Instruments
Voltage - Supply Span (Min) 8 V
Voltage - Supply Span (Max) 12 V
Voltage - Input Offset 250 µV
Supplier Device Package SOT-23-5
Slew Rate 700V/µs
Series -
Package / Case SC-74A, SOT-753
Package Tape & Reel (TR)
Output Type -
Product Attribute Attribute Value
Operating Temperature -40°C ~ 85°C
Number of Circuits 1
Mounting Type Surface Mount
Gain Bandwidth Product 1.6 GHz
Current - Supply 14mA
Current - Output / Channel 70 mA
Current - Input Bias 2 pA
Base Product Number OPA657
Amplifier Type Voltage Feedback
-3db Bandwidth 350 MHz

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 2 (1 Year)
REACH Status REACH Unaffected
ECCN EAR99

Parts Introduction

OPA657N/250 Image
OPA657N/250 (1)

Manufacturer Part Number

OPA657N/250

Manufacturer

Texas Instruments

Introduction

The OPA657N/250 is a high-speed, low-noise, low-distortion operational amplifier (op-amp) designed for a wide range of applications, including instrumentation, video, and communication systems.

Product Features and Performance

Gain Bandwidth Product: 1.6 GHz

Voltage Supply Span (Min): 8 V

Current Supply: 14 mA

Slew Rate: 700 V/s

Voltage Input Offset: 250 μV

Amplifier Type: Voltage Feedback

Voltage Supply Span (Max): 12 V

Current Output / Channel: 70 mA

Current Input Bias: 2 pA

-3 dB Bandwidth: 350 MHz

Product Advantages

High-speed operation

Low noise and distortion

Wide supply voltage range

High output current capability

Key Technical Parameters

Manufacturer Part Number: OPA657N/250

Package / Case: SC-74A, SOT-753

Mounting Type: Surface Mount

Operating Temperature: -40°C to 85°C

Quality and Safety Features

RoHS3 Compliant

Compatibility

Suitable for a wide range of instrumentation, video, and communication system applications

Application Areas

Instrumentation

Video systems

Communication systems

Product Lifecycle

The OPA657 is an active product and is not nearing discontinuation. Replacement or upgrade options are available.

Several Key Reasons to Choose This Product

High-speed operation with 1.6 GHz gain bandwidth product

Low noise and distortion performance

Wide supply voltage range from 8 V to 12 V

High output current capability of 70 mA

Suitable for a variety of instrumentation, video, and communication system applications

RoHS3 compliant for environmental considerations

Frequently Asked Questions(FAQ)

What are the key performance trade-offs when using the OPA657N/250 voltage feedback amplifier in a high-speed signal chain, particularly concerning slew rate, bandwidth, and power consumption?
The OPA657N/250 offers a high slew rate of 700V/µs and a gain bandwidth product of 1.6 GHz, making it suitable for fast transient response and wideband applications. However, these characteristics come with a supply current of 14mA, which may impact power efficiency in battery-operated systems. Designers must balance this high dynamic performance against thermal and power budget constraints, especially when driving capacitive loads or operating near full-scale output swings. In precision analog stages where speed is secondary, a lower-power alternative may offer better overall system efficiency without significant performance penalty.
How does the input bias current of 2 pA in the OPA657N/250 affect circuit design in high-impedance sensor interface applications, and what layout considerations are necessary to maintain accuracy?
With an input bias current of just 2 pA, the OPA657N/250 minimizes loading effects on high-resistance sources such as photodiodes or resistive sensors. This enables accurate signal acquisition without significant voltage drop across source impedances. Nevertheless, even tiny leakage currents can introduce errors if the PCB traces or routing exhibit excessive parasitic capacitance or humidity exposure. Proper guard ring techniques around high-impedance nodes and use of low-leakage dielectrics in the surrounding area are essential to preserve measurement integrity. Surface mount assembly also reduces lead inductance and improves isolation.
Can the OPA657N/250 reliably drive capacitive loads above 100 pF without additional compensation, and what stability risks should be considered in compact layouts?
The OPA657N/250 can drive moderate capacitive loads but may become unstable when loaded with more than approximately 100 pF without series resistance. Exceeding this threshold introduces phase lag that degrades phase margin and can result in ringing or oscillation, particularly in unity-gain configurations. To ensure stability, a small series resistor (typically 2Ω to 10Ω) should be placed at the output node before the capacitor. Layout parasitics, such as long traces or unshielded vias, exacerbate instability by adding effective capacitance or inductive coupling. Maintaining short, direct connections and minimizing loop areas is critical for reliable operation at full bandwidth.
How does the OPA657N/250 compare to the MAX4104EUK+T in terms of noise performance, power consumption, and suitability for precision data acquisition systems?
While both the OPA657N/250 and MAX4104EUK+T are general-purpose op-amps, they differ significantly in key parameters. The OPA657N/250 features a much higher gain bandwidth (1.6 GHz vs. typically < 10 MHz) and faster slew rate (700V/µs vs. ~50V/µs), making it better suited for high-speed signals. However, the MAX4104EUK+T consumes significantly less power, often under 1mA, compared to 14mA for the OPA657N/250. For precision data acquisition requiring low offset drift and minimal noise over time, the MAX4104EUK+T may offer superior DC accuracy and lower flicker noise. The choice depends on whether speed or power efficiency dominates the application requirement.
What is the impact of the OPA657N/250’s 250 µV input offset voltage on closed-loop gain accuracy in a 100x non-inverting amplifier configuration, and how does this compare to tighter-tolerance alternatives?
In a 100x gain configuration, a 250 µV input offset results in an output error of 25 mV due to gain multiplication. This represents a 0.25% error at full scale, which may be unacceptable in systems requiring better than 0.1% linearity. While the OPA657N/250 excels in speed, its offset specification reflects a trade-off between bandwidth and precision. For applications demanding lower offset, amplifiers like the OPA847 or ADA4898 offer microvolt-level offsets at the cost of reduced bandwidth or increased complexity. Designers must evaluate whether the OPA657N/250’s dynamic performance justifies its modest precision margins.
Is the OPA657N/250 suitable for single-supply operation within its specified supply range, and what biasing considerations apply when interfacing with digital logic levels?
The OPA657N/250 supports single-supply operation from 8V to 12V, making it compatible with standard logic rail voltages such as 10V or 12V systems. However, unlike some rail-to-rail input/output parts, it requires input signals to stay within 1V of either supply rail to avoid distortion. When interfacing with digital logic outputs (e.g., 3.3V TTL), proper level shifting or attenuation may be needed unless the reference voltage is elevated. Output swing approaches the rails only under light load conditions; driving heavy capacitive loads can reduce output headroom. Careful attention to signal conditioning ensures clean transitions and avoids saturation.
How does the moisture sensitivity level (MSL) rating of MSL 2 for the OPA657N/250 influence storage and handling procedures during manufacturing, and what is the recommended shelf life under typical conditions?
As an MSL 2 component, the OPA657N/250 has a maximum floor life of one year from the date of manufacture under standard ambient conditions (e.g., 25°C, 60% RH). After opening the moisture barrier bag, the device must be soldered within eight hours to prevent condensation-induced popcorning during reflow. Storage in dry cabinets with desiccant and humidity indicators is advised for long-term inventory. These precautions are especially important for high-volume production environments where traceability and process control directly affect yield and reliability.
What are the implications of selecting the OPA657N/250 instead of a dedicated instrumentation amplifier for low-level signal conditioning tasks, such as strain gauge measurements?
While the OPA657N/250 can serve as a building block in a discrete instrumentation amplifier stage, it lacks matched internal resistors, laser-trimmed gains, and specialized CMRR optimization found in integrated solutions. Strain gauges often produce millivolt-level signals with high source impedance, requiring excellent common-mode rejection and low offset drift over temperature. Using the OPA657N/250 in such roles increases design complexity and reduces system accuracy unless carefully calibrated. Its strengths lie in broadband amplification rather than precision differential sensing, so alternative architectures may deliver better long-term stability at the expense of board space and component count.
How does the package type SOT-23-5 of the OPA657N/250 affect thermal performance and solder joint reliability in high-frequency printed circuit board designs?
The small SOT-23-5 package limits the OPA657N/250’s ability to dissipate heat due to its small thermal pad and footprint. At full output current (70 mA) and high slew rates, junction temperatures can rise significantly if not properly heatsunk, potentially triggering thermal shutdown or accelerating aging. Additionally, fine-pitch soldering under automated pick-and-place equipment demands precise stencil alignment and reflow profiles to avoid bridging or insufficient wetting. High-density routing around the device increases electromagnetic coupling risks, necessitating careful grounding and shielding practices to maintain signal integrity at 350 MHz bandwidth.
In what scenarios would substituting the OPA657N/250 with an integrated RF amplifier provide measurable benefits, and how do their respective noise figures compare?
The OPA657N/250 delivers respectable bandwidth for analog front ends but is not optimized for RF signal chains. Integrated RF amplifiers typically feature lower noise figures (< 2 dB) and better gain flatness across frequency, making them preferable in receiver front ends or IF stages. The OPA657N/250’s noise performance, while acceptable for baseband processing, may degrade SNR in weak-signal detection. Substitution is viable only if post-amplification filtering compensates for spectral imbalances. Otherwise, dedicated RF components ensure consistent performance across varying modulation schemes and interference environments.
How does the RoHS3 compliance status of the OPA657N/250 influence procurement strategy in regulated industries such as medical or aerospace, and what documentation is typically required?
RoHS3 compliance confirms the absence of restricted substances including Pb, Cd, Hg, Cr6+, PBB, and PBDE, aligning the OPA657N/250 with global environmental regulations. In medical device certification (e.g., FDA submissions) or aerospace qualification (e.g., AS9100), suppliers must provide Certificates of Compliance (CoC) and material declarations. Although RoHS3 itself does not guarantee functional safety, its inclusion supports broader regulatory alignment. Procurement teams should verify not only compliance but also supply chain continuity, as non-compliant substitutions could delay approvals despite similar electrical performance.
What design precautions are necessary when cascading multiple stages using the OPA657N/250 to achieve total gain exceeding 1000, and how does bandwidth roll-off affect signal fidelity?
Cascading multiple OPA657N/250 stages introduces cumulative phase shift and reduces usable bandwidth. For example, a three-stage cascade with 10x gain per stage yields a total gain of 1000 but limits the -3dB bandwidth to roughly 350 MHz divided by the square root of 3, resulting in approximately 200 MHz. This roll-off distorts fast edges and reduces settling accuracy. Anti-aliasing filters or gain staging with intermediate buffering may mitigate distortion. Alternatively, using higher-bandwidth amplifiers per stage or reducing gain per stage improves stability and preserves transient response, though at the cost of increased component count and power.

Parts with Similar Specifications

The three parts on the right have similar specifications to Texas Instruments OPA657N/250

Product Attribute OPA657N/250G4 OPA657NB/250G4 OPA657NB/250 OPA656U/2K5G4
Part Number OPA657N/250G4 OPA657NB/250G4 OPA657NB/250 OPA656U/2K5G4
Manufacturer Texas Instruments Texas Instruments Texas Instruments Luminary Micro / Texas Instruments
Gain Bandwidth Product - - - -
Slew Rate - - - -
Voltage - Input Offset - - - -
Voltage - Supply Span (Max) - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Current - Output / Channel - - - -
Series - - - -
Current - Supply - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Base Product Number - DAC34H84 MAX500 ADS62P42
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Number of Circuits - - - -
Current - Input Bias - - - -
Mounting Type - Surface Mount Through Hole Surface Mount
Output Type - Current - Unbuffered Voltage - Buffered -
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
-3db Bandwidth - - - -
Voltage - Supply Span (Min) - - - -
Amplifier Type - - - -

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Customer Reviews

Evaluation: 10 Articles

  • Nath***rooks
    Jun 11, 2026

    Installed this power component in a converter board. Output remained stable under different load conditions and thermal performance was better than expected.

  • 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.

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America United States 5
Brazil 7
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New Zealand 5
Asia India 4
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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
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OPA657N/250 Image

OPA657N/250

Texas Instruments
32D-OPA657N/250

Want a better price? Add to Cart and Submit RFQ now, we'll contact you immediately.

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