XL331 – Voltage-to-Frequency / Frequency-to-Voltage Converter – Xinluda

The Xinluda XL331 is a precision voltage-to-frequency (V/F) and frequency-to-voltage (F/V) converter in an SOP-8 package, operating from 4V to 40V with a full-scale frequency range up to 100 kHz and 0.03% maximum linearity.

The XL331 from Xinluda (Shenzhen Xinluda Information Technology Co., Ltd.) is a precision voltage-to-frequency (V/F) and frequency-to-voltage (F/V) converter supplied in a compact SOP-8 package. Functionally compatible with the industry-standard LM331 architecture, the XL331 converts an analog input voltage into a proportional pulse-train output frequency, and can also be configured for frequency-to-voltage conversion, making it a versatile building block for data acquisition, isolated signal transmission, and analog-to-digital interfacing.

The XL331 supports split or single-supply operation and can run from a single 5V rail or supplies up to 40V. Its pulse output is compatible with all common logic forms and is short-circuit-proof against VCC, simplifying interfacing to microcontrollers, optocouplers, and counters.

Key Features

• Voltage-to-frequency (V/F) and frequency-to-voltage (F/V) conversion in one device
• Supply voltage range: 4V to 40V; operates on a single 5V supply
• Wide full-scale frequency range: 1 Hz to 100 kHz
• Ensured linearity: 0.03% maximum
• Wide dynamic range: 100 dB minimum at 10 kHz
• Low power consumption: 15 mW typical at 5V
• Temperature coefficient: 50 ppm/°C
• Split or single-supply operation
• Pulse output compatible with all logic forms; high-voltage output capability up to 40V
• Output short-circuit-proof against VCC
• Operating temperature range: 0°C to +70°C
• SOP-8 package

Applications

• Analog-to-digital conversion and data acquisition front ends
• Isolated and long-distance analog signal transmission (frequency telemetry)
• Voltage-to-frequency and frequency-to-voltage signal processing
• Tachometers and motor speed sensing (F/V mode)
• Frequency-based instrumentation
• Low-cost sensor signal conditioning

Why Source XL331 from Pacific Component Xchange

The XL331 is a specialty Xinluda converter IC with limited authorized-distributor coverage, which can make it difficult to procure through mainstream channels. Pacific Component Xchange specializes in sourcing hard-to-find, allocated, and obsolete power-management and signal-conversion components like the XL331. We support open-market and end-of-life sourcing, authenticity verification, and global shipping to keep your production lines and service operations running.

Because the XL331 is offered on a Request-For-Quote basis, pricing and lead time are confirmed at the time of inquiry based on current availability. Submit an RFQ today and our sourcing team will respond with verified stock, pricing, and delivery options for the quantities you need.