LSI Design and Integration Corp. 
Part Number : LD-PA-1000-050
Overview :
The LD-PA-1000-050-x is a BiCMOS device that supports a 2, 4-channel GMR Preamplifier designed for use with 4-terminal magneto-resistive recording heads. It provides 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.
Features : - Current Bias/Current Sense Architecture
- +5V and +8V Supply
- 3.3V CMOS compatible Logic Interface
- Power Management
- Internal Current Set Resistor
- Single Ended Input to Reader with One Side Grounded Externally
- Differential Read Output
- GMR Resistor Range: 25W to 65W
- Programmable 5 bit GMR Head Bias Current: Ib = 2mA-9.75mA
- Programmable Gain Control: 170V/V & 225V/V @ Rmr = 40W , Ib = 6mA
- Wide Bandwidth:
- BW = 244MHz at -1dB @ Rmr = 40W
- BW = 385 MHz at -3dB @ Rmr = 40W
- Programmable Booster for Wide Bandwidth
- Equivalent Input Noise: Vn = 0.50nV/ÖHz
- @ Rmr = 40W
- PSRR: -68dB at 10KHz to 162MHz;
Categories :
Portability :
Type : Soft

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