Abstract: Shenzhen Mingjiada Electronics Co., Ltd. (hereinafter referred to as “Mingjiada”) offers Texas Instruments’ genuine OPA657N/250 in stock. This 1.6 GHz low-noise FET-input operational amplifier, housed in an SOT-23-5 package, features ultra-low bias current and high slew rate, making it an ideal choice for high-speed photodiode amplification, ADC driving, and test and measurement applications. Mingjiada offers a one-stop BOM fulfillment service with genuine, in-stock products and same-day shipping.
Product Overview: Combining High Speed and Precision
In high-speed signal acquisition and precision optoelectronic conversion applications, selecting an operational amplifier that combines high bandwidth with low noise is critical. The OPA657N/250 is precisely the high-performance solution Texas Instruments has introduced to address this challenge.
The OPA657N/250 seamlessly combines a high gain-bandwidth product with a JFET input stage, resolving the common issues of excessive noise or insufficient bandwidth in traditional amplifiers for broadband applications. As a professional electronic component distributor, Mingjiada Electronics maintains a long-term, large-volume supply of this model, providing stable, in-stock support for engineers and procurement professionals.
OPA657N/250 Key Electrical Specifications
Gain-Bandwidth Product: 1.6 GHz
Bandwidth at G=10: 275 MHz, -3 dB bandwidth: 350 MHz
Slew Rate: 700 V/μs (G=10, 1 V step)
Input Configuration: JFET input
Input Offset Voltage: ±250μV
Input Bias Current: 2pA (ultra-low leakage)
Input Voltage Noise: 4.8nV/√Hz
Maximum Output Current: 70mA
Operating Temperature: -40°C to +85°C (industrial grade)
Supply Voltage: Single supply 8–12V / Dual supply ±4–±6V
Package: SOT-23-5 (N marking)
Packaging: Reel, 250 pieces per reel (suffix /250)
Environmental Standards: RoHS, REACH compliant; ECCN EAR99, no export restrictions
Product Features and Benefits
1. Extremely Wide Gain-Bandwidth Product
The OPA657N/250 features a gain-bandwidth product of 1.6 GHz, enabling it to maintain a signal path bandwidth of 275 MHz even at high gain settings (e.g., G=10). This decompensated design allows it to handle high-speed signals with ease.
2. Ultra-Low Noise Performance
Thanks to its FET input structure, this chip not only features an ultra-low input bias current of 2 pA but also maintains a low voltage noise of 4.8 nV/√Hz. When amplifying photodiode transimpedance, it delivers an excellent signal-to-noise ratio (SNR), with total equivalent input noise current as low as 1.8 pA/√Hz (at a 10 MHz bandwidth).
3. High-Speed Response and Accuracy
A slew rate of 700 V/µs ensures that the OPA657N/250 achieves extremely short settling times (approximately 11 ns) during large-signal step responses, making it ideal for driving high-speed analog-to-digital converters (ADCs) or for use in optical time-domain reflectometers (OTDRs).
Typical Applications
With its unique performance characteristics, the OPA657N/250 finds widespread application in the following fields:
Broadband photodetector/photodiode amplifiers: such as front-end transimpedance amplification in medical imaging and fiber-optic communications.
ADC drivers: as input driver stages for high-precision, high-speed ADCs to ensure signal integrity.
Test and measurement equipment: such as oscilloscope front ends, spectrum analyzers, and wafer scanning equipment.
Professional audio and radar systems: requiring front-end signal conditioning with a wide dynamic range.
Packaging and Ordering Information
Part Number: OPA657N/250
Package: SOT-23-5
Packaging: Tape and Reel (TR), 250 pieces per reel
MSL Rating: Level-2-260C-1 YEAR
Buy Now
Shenzhen Mingjiada Electronics Co., Ltd. is currently offering the OPA657N/250 at a great price. Whether you need samples for R&D or long-term supply for mass production, Mingjiada offers highly competitive pricing.
Get a quote or place an order:
Visit the Mingjiada website: https://www.integrated-ic.com/
Contact Sales: [sales@hkmjd.com]
Phone: 86-13410018555 (also on WeChat)
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