ROHM BU2880 Series Data Sheet
Summary
The BU2880 series is a high-density digital servo controller IC engineered for building advanced Video Cassette Recorder (VCR) servo systems using a single chip solution. It integrates all essential VCR functions, including digital filtering for DRUM and CAPSTAN mechanisms, supporting wide-aspect operation, and compatibility with multiple head standards. This technical manual provides comprehensive documentation covering electrical specifications, pin descriptions, functional block diagrams, and detailed measurement circuits, making it an invaluable resource for electronics engineers developing or maintaining professional video recording hardware.
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Digital servo controller for VCRs BU2880 series The BU2880 series are linear digital-servo controllers that allow construction of a VCR servo system using one IC. The DRUM and CAPSTAN systems have digital filters, and the IC is compatible with VISS / VASS overwriting and wide-aspect operation.
•Applications Video cassette recorders
•Features
1) All VCR servo functions on a single chip. 5) DRUM f H compensation calculation function from
2) Digital filters in the DRUM and CAPSTAN speed and speed detect function. phase systems. 6) 6.5H discrimination. 3) Built-in CTL amplifier with serial gain setting. 7) Compatible with 19µm heads.
4) VISS / VASS overwriting and INDEX detection func- tions for wide-aspect operation.
•Absolute maximum ratings (Ta = 25°C) Parameter Symbol Limits Unit Power supply voltage VDD 7.0 Power dissipation Pd 500∗ m W Operating temperature Topr – 15 ~ + 70 °C Storage temperature Tstg – 55 ~ + 125 °C ∗ Reduced by 5m W for each increase in Ta of 1°C over 25°C.
•Recommended operating conditions (Ta = 25°C) Parameter Symbol Min. Typ. Max. Unit
4.5 5.0 5.5Power supply voltage VVDD
Page Summary Contents For ROHM BU2880 Series Data Sheet
Manual Details
| Brand | ROHM |
|---|---|
| Pages | 7 |
| File Size | 82.50 KB |
| Published | July 16, 2026 |
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Frequently Asked Questions
What technical functions does the BU2880 series controller manage?
It handles all VCR servo functions on a single chip, including built-in CTL amplifier, digital filters for DRUM and CAPSTAN systems, and 6.5H discrimination.
How is wide-aspect operation achieved with this IC?
The BU2880 supports wide-aspect operation through dedicated functions for VISS / VASS overwriting and INDEX/DET detection.
What are the recommended operating conditions for the device?
At 25°C, the operating supply voltage (VDD) should be between 4.5V and 5.5V, with an appropriate power dissipation of about 500mW.