| US 7,616,056 B2 | ||
| Nauta operational transconductance amplifier | ||
| Jung Woo Park, Daejeon (Korea, Republic of); and Cheon Soo Kim, Daejeon (Korea, Republic of) | ||
| Assigned to Electronics and Telecommunications Research Institute, Daejeon (Korea, Republic of) | ||
| Filed on Nov. 20, 2007, as Appl. No. 11/942,935. | ||
| Claims priority of application No. 10-2006-0122182 (KR), filed on Dec. 05, 2006; and application No. 10-2007-0058789 (KR), filed on Jun. 15, 2007. | ||
| Prior Publication US 2009/0115516 A1, May 07, 2009 | ||
| Int. Cl. H03F 3/45 (2006.01) | ||
| U.S. Cl. 330—69 [330/253] | 10 Claims |
| 1. An operational transconductance amplifier (OTA) for receiving the first and the second input voltages and outputting the
first and the second output currents proportional to a voltage difference between the first and the second input voltages,
the amplifier comprising:
the first parallel converting cell having a positive input terminal for receiving the first input voltage and a negative input
terminal for receiving the second input voltage;
the second parallel converting cell having a positive input terminal for receiving the second input voltage and a negative
input terminal for receiving the first input voltage;
the first cross feedback converting cell having a positive input terminal connected to an output terminal of the second parallel
converting cell, a negative input terminal connected to a ground voltage terminal, and an output terminal connected to an
output terminal of the first parallel converting cell; and
the second cross feedback converting cell having a positive input terminal connected to the output terminal of the first parallel
converting cell, a negative input terminal connected to the ground voltage terminal, and an output terminal connected to the
output terminal of the second parallel converting cell.
|