BU2630F-E2

Overview

The BU2630F-E2 is a CMOS LSI dual PLL frequency synthesizer manufactured by ROHM Semiconductor. It features independent control of VCOs for transmission and reception, with separate programmable reference frequency and main counter settings. The device supports operation up to 80MHz at VDD = 2.5V. Key electrical characteristics include low current dissipation: 2.2mA (typ) in dual-system operation, 1.2mA (typ) in single-system operation, and 0.2mA (typ) in the non-operating state, all measured at VDD = 3V. It integrates a 16-bit main counter and an internal 14-bit reference frequency counter.

Feature Summary

• Dual PLL synthesizer with independent TX/RX VCO control
• Low power consumption: 2.2mA (dual), 1.2mA (single), 0.2mA (standby)
• 16-bit main counter and 14-bit reference frequency counter
• Unlock detection capability
• Four open-drain output ports
• 3-wire serial input control

Applications

• Cordless telephones
• Amateur short wave radios
• Industrial transceivers
• VHF/UHF frequency generators

Procurement Notes

Verify the specific suffix '-E2' against the official ROHM datasheet to confirm environmental compliance or packaging details, as the provided source text primarily references the standard BU2630F/BU2630FV variants. Ensure the component meets the intended application's reliability requirements, noting that high-reliability uses require direct consultation with the manufacturer.

Selection Notes

Select this component for designs requiring independent dual-channel frequency synthesis with low power constraints. The 3-wire serial interface simplifies control logic integration. Verify that the required operating frequency does not exceed 80MHz at the specified supply voltage. Consider the open-drain output configuration when designing external pull-up circuits for the four output ports.

Part Context

The BU2630F belongs to ROHM's communication IC family, specifically designed as a dual PLL frequency synthesizer. It is part of a series including variants like BU2611A and BU2614, which are typically used in tuner applications. The BU2630F distinguishes itself with dual-system operation capabilities suitable for more complex communication equipment.

Replacement Considerations

Direct substitutes may include other dual PLL synthesizers from manufacturers such as Sanyo Semicon Device (e.g., LM7006) or Toshiba Semiconductor (e.g., TB31206FN). Verify pin compatibility, current consumption, and counter bit-depth before substitution.