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供应商	LDIC
型号	2-4 Channel Pre-Amp, 240 MHz, 5 or 3V
类型	Hard IP
到期日	Available on request
源网址	View more
特征	Current Bias/Current Sense Architecture +3.3 or +5V Supply 3.3V CMOS compatible Logic Interface Power Management Integrated reference resistor Single ended input to reader with one side grounded externally Differential read output GMR resistor range: 25 to 65 Ohms Programmable 5 bit GMR head bias current: Ib = 2mA-9.75mA Programmable gain control: 130V/V & 200V/V@Rmr = 35 Ohms, Ib = 6mA
详情页	View more
附件名称	www.ldic.com\LD-PA-1000-049.htm
附件链接	View more

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详情

The LD-PA-1000-049-1, LD-PA-1000-049-2 are BiCMOS devices that support a 2-channel (4-channel) GMR Preamplifier. They are designed for use with 4-terminal magneto-resistive recording heads, providing a low noise GMR head amplifier, GMR bias current control, thin film write driver, write current control, thermal asperity detection and correction. Fast recovery mode can be also programmed to put the chip faster in read mode from any other existing modes. The device is programmable for read gain, GMR resistance measurement, and thermal asperity threshold level. The device allows multiple channel write functions for servo writing. Half or all of the heads can be simultaneously selected in the servo write mode. Features and thresholds are controlled through a serial port interface. This product requires +3.3V or +5V supply voltage. Available in flip-chip or TSSOP packages.

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