BL3701 Low Noise Operational Amplifier, 6.5nV/√Hz, Rail-to-Rail, SOT23-5

The BL3701 is a single-channel low-noise operational amplifier optimized for precision and low-level signal amplification. With an ultra-low input noise density of 6.5nV/√Hz at 1kHz, it is ideal for sensor interfaces, audio circuits, and measurement systems.
Operating from a 2.1V to 5.5V supply, the BL3701 provides a 12MHz gain bandwidth, 11V/µs slew rate, and rail-to-rail input and output, ensuring excellent dynamic performance in low-voltage designs. Housed in a compact SOT23-5 package, it is well suited for space-constrained applications.

Key Specifications

• Channels: 1

• Noise Density: 6.5nV/√Hz @1kHz

• Supply Voltage: 2.1V – 5.5V

• Gain Bandwidth (GBW): 12MHz

• Slew Rate: 11V/µs

• Quiescent Current: 1100µA / Channel

• Input Bias Current: 1pA

• Typical Offset Voltage: 0.25mV

• Rail-to-Rail Input/Output: Yes

• Package: SOT23-5

Applications

• Precision sensor amplification

• Audio signal processing

• Data acquisition systems

• Portable measurement equipment

Features

• Ultra-low noise performance

• High-speed operation

• Rail-to-rail I/O

• Compact SOT23-5 package