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TDA5360UK Folha de dados(PDF) 11 Page - NXP Semiconductors |
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TDA5360UK Folha de dados(HTML) 11 Page - NXP Semiconductors |
11 / 34 page 1998 July 30 Philips Semiconductors Objective Specification, Revision 2.2 Pre-Amplifier for Hard Disk Drive with MR-Read / Inductive Write Heads TDA5360 11 9.5 SLEEP mode The sleep mode is selected by programming bits MODE0 and MODE1. (see Reg.09) In Sleep Mode, the IC is accessible via the Serial Interface. All circuits, other than those of the CMOS Serial Interface and the circuit which forces the data registers to their default values at power up and which fixes the DC level of RDp- RDn (required when operating with more than one amplifier), are inactive. Typical static current consumption is less than one mA, depending on the state of the logic pins where internal pull-up or pull-down resistors are connected. Dynamic current consumption during operation of the Serial Interface in the Sleep mode and owing to external activity at the inputs to the Serial Interface is not included. In all Modes including the Sleep mode, data registers can be programmed. Sleep is the default Mode at power-up. Switching to other modes takes less than 0.1 ms. The CMM of RDP and RDN is the same as in Standby or Active mode. (see Note) Internal fault detectors are powered off. Note 1 : At power-up, as long as DRN pin is LOW, a reset of the Serial Interface registers occurs. Before any register programmation, the user should first force DRN pin to HIGH in order to exit the reset mode and enable a register programmation. See description of DRN function in (10.6). Note 2 : As a goal, the CMM of RDP and RDN is identical in all operating modes. The term “high-impedance” here means at least 10 to 20 kOhm from RDP or RDN to an internal CMM voltage reference. |
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