Patent ID: 7679124

Claim:
An analog capacitor comprising: a TiN lower electrode which is formed on a substrate; a multi-layered dielectric layer which is formed on the TiN lower electrode and has a stack structure selected from the group consisting of TaO x N y —HfO 2 —Ta 2 O 5 , Ta 2 O 5 —HfO x N y —Ta 2 O 5 , Ta 2 O 5 —HfO 2 —TaO x N y , Ta 2 O 5 —HfO x N y —TaO x N y , TaO x N y —HfO 2 —TaO x N y , TaO x N y —HfO x N y —Ta 2 O 5 , HfO x N y —Ta 2 O 5 —HfO 2 , HfO 2 —TaO x N y —HfO 2 , HfO 2 —Ta 2 O 5 —HfO x N y , HfO 2 —TaO x N y —HfO x N y , HfO x N y —Ta 2 O 5 —HfO x N y and HfO x N y —TaO x N y —HfO 2 , wherein x and y are greater than zero; and a TiN upper electrode which is formed on the multi-layered dielectric layer.