ML2035IP

Programmable Timers And Oscillators Overview

The ML2035IP is a monolithic serial input programmable sine wave generator designed for telecommunications and modem applications. It generates precise test, call progress, and signaling tones from DC to 25kHz without external components. The output frequency is programmed via a 16-bit serial data word using an SPI-compatible interface. The device features an onboard crystal oscillator supporting 3MHz to 12MHz inputs or direct clock signals. It operates within the industrial temperature range of -40°C to 85°C in an 8-pin PDIP package.

Programmable Timers And Oscillators Feature Summary

• Programmable output frequency from DC to 25kHz with 1.5Hz resolution at 12MHz clock
• Fully integrated solution requiring no external components
• Onboard 3MHz to 12MHz crystal oscillator or direct digital clock input capability
• 3-wire SPI compatible serial microprocessor interface with double buffered data latch

Programmable Timers And Oscillators Applications

• Telecommunications tone generation
• Modem test tone synthesis
• Call progress tone generation
• Signaling tone generation

Programmable Timers And Oscillators Procurement Notes

Verify the suffix IP indicates the industrial temperature range (-40°C to 85°C) compared to the CP variant (0°C to 70°C). Confirm the 8-pin PDIP package type matches the design requirements. Ensure power supply bypassing capacitors are placed physically close to VCC/GND and VSS/GND pins as recommended.

Programmable Timers And Oscillators Selection Notes

Select the ML2035IP when operation below 0°C is required. The device requires dual supplies: VCC (+4.5V to +5.5V) and VSS (-4.5V to -5.5V). Output amplitude is ratiometric to ±VCC/2. For frequencies above 25kHz, slew rate limitations restrict the peak-to-peak voltage; ensure load impedance does not exceed 1kΩ and 100pF.

Programmable Timers And Oscillators Part Context

Originally manufactured by Fairchild Semiconductor, this component is part of a family including ML2031, ML2032, and ML2004. The ML2035IP serves as the tone generator counterpart to tone detectors and logarithmic gain/attenuators in 4-wire termination equipment architectures.

Programmable Timers And Oscillators Replacement Considerations

The ML2035CP is functionally identical but rated for commercial temperature range (0°C to 70°C). Cross-reference with other manufacturers' numeric controlled oscillators if pin compatibility is not strictly required.