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High CMRR Instrumentation Amplifier (Schematic and Layout) design for biomedical applications

Instrumentation amplifiers are intended to be used whenever acquisition of a useful signal is difficult. IA’s must have extremely high input impedances because source impedances may be high and/or unbalanced. bias and offset currents are low and relatively stable so that the source impedance need not be constant. Balanced differential inputs are provided so that the signal source may be referenced to any reasonable level independent of the IA output load reference. Common mode rejection, a measure of input balance, is very high so that noise pickup and ground drops, characteristic of remote sensor applications, are minimized.Care is taken to provide high, well characterized stability of critical parameters under varying conditions, such as changing temperatures and supply voltages. Finally, all components that are critical to the performance of the IA are internal to the device. The precision of an IA is provided at the expense of flexibility. By committing to the one specific task of

ipad 3 launced in india



recently ipad 3 was launced in india on 27 april with a price tag on a higher side than its previous version ipad 2 .

its rates on indian markets are as follows:

 

Pricing of the new iPad:
wi-fi models
16GB – Rs 30,500
32GB – Rs 36,500
64GB – Rs 42,500
wi-fi 4G models
16GB – Rs 38,900
32GB – Rs 44,900
64GB - Rs 50,900


this time there was less craze seen in the indian markets,the reason is still unknown,some say it is due to price hike aand some believe that its just an upgradation to previous ipad with 4g,isight camera and retina display.
so the people who alreadyowns a ipad are not so enthusiastic to buy a new one.

    here are the Weight and Dimensions of the ipad 2 and 3 for you to compare before buying one for you.

Particulars
New iPad
iPad 2
Weight and Dimensions
Wi-Fi
  • Height: 9.50 inches (241.2 mm)
  • Width: 7.31 inches (185.7 mm)
  • Depth: 0.37 inch (9.4 mm)
  • Weight: 1.44 pounds (652 g)
Wi-Fi + 4G
  • Height: 9.50 inches (241.2 mm)
  • Width: 7.31 inches (185.7 mm)
  • Depth: 0.37 inch (9.4 mm)
  • Weight: 1.46 pounds (662 g)
Wi-Fi
  • Height: 9.50 inches (241.2 mm)
  • Width: 7.31 inches (185.7 mm)
  • Depth: 0.34 inch (8.8 mm)
  • Weight: 1.33 pounds (601 g)
Wi-Fi + 3G
  • Height: 9.50 inches (241.2 mm)
  • Width: 7.31 inches (185.7 mm)
  • Depth: 0.34 inch (8.8 mm)
  • Weight: 1.35 pounds (613 g)

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