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CXA3238TN/CXA3239TN
6/4-channel Read/Write Amplifier for GMR-Ind Head Hard Disk Drive
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Description The CXA3238TN/CXA3239TN is a Read/Write amplifier for GMR-Ind (Giant Magneto ResistiveInductive) heads used in hard disk drives, and is capable of supporting up to six channels. Features • +5 V and –3 V power supply. • Current bias voltage sense type. • Drives up to six heads (CXA3238TN) • Drives up to four heads (CXA3239TN) • Low power 180 mW at Read • Differential read amplifier gain ; ×140/190 (RMR=50 Ω) • Input noise of 0.77 nV/ √ Hz (typ.), RMR=50 Ω, IB=6.0 mA. • • • • • Recovery time write to read ; 300 nsec. (typ.) Write data is triggered by differential P-ECL signal. Servo bank write.