The design of an operational transconductance amplifier (OTA)
Operational amplifiers are commonly used in analog circuit designing, especially operational transconductance amplifier (OTA)which is used to convert input voltage signal into an output current. However, OTA could only drive capacitive load, therefore an extra output stage is needed. The OTA is desi...
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| Format: | Final Year Project (FYP) |
| Language: | English |
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2017
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| Online Access: | http://hdl.handle.net/10356/70770 |
| _version_ | 1811681877416738816 |
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| author | Yap, Deep |
| author2 | Siek Liter |
| author_facet | Siek Liter Yap, Deep |
| author_sort | Yap, Deep |
| collection | NTU |
| description | Operational amplifiers are commonly used in analog circuit designing, especially operational transconductance amplifier (OTA)which is used to convert input voltage signal into an output current. However, OTA could only drive capacitive load, therefore an extra output stage is needed. The OTA is designed using the nested- current mirror technique, which is able to deliver a DC gain of 70dB, phase margin more than 60 degrees and with slew rate of 8mV/μs for a capacitive load of 0.5nF. The output stage is designed in a class AB configuration, which would able to sink and source 1mA current to a 1kΩ resistive load while maintaining output swing with one overdrive voltage less than the supply voltage. The CMOS technology used is 0.18μm. |
| first_indexed | 2024-10-01T03:47:55Z |
| format | Final Year Project (FYP) |
| id | ntu-10356/70770 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:47:55Z |
| publishDate | 2017 |
| record_format | dspace |
| spelling | ntu-10356/707702023-07-07T15:58:54Z The design of an operational transconductance amplifier (OTA) Yap, Deep Siek Liter School of Electrical and Electronic Engineering DRNTU::Engineering::Electrical and electronic engineering Operational amplifiers are commonly used in analog circuit designing, especially operational transconductance amplifier (OTA)which is used to convert input voltage signal into an output current. However, OTA could only drive capacitive load, therefore an extra output stage is needed. The OTA is designed using the nested- current mirror technique, which is able to deliver a DC gain of 70dB, phase margin more than 60 degrees and with slew rate of 8mV/μs for a capacitive load of 0.5nF. The output stage is designed in a class AB configuration, which would able to sink and source 1mA current to a 1kΩ resistive load while maintaining output swing with one overdrive voltage less than the supply voltage. The CMOS technology used is 0.18μm. Bachelor of Engineering 2017-05-11T05:05:20Z 2017-05-11T05:05:20Z 2017 Final Year Project (FYP) http://hdl.handle.net/10356/70770 en Nanyang Technological University 60 p. application/pdf |
| spellingShingle | DRNTU::Engineering::Electrical and electronic engineering Yap, Deep The design of an operational transconductance amplifier (OTA) |
| title | The design of an operational transconductance amplifier (OTA) |
| title_full | The design of an operational transconductance amplifier (OTA) |
| title_fullStr | The design of an operational transconductance amplifier (OTA) |
| title_full_unstemmed | The design of an operational transconductance amplifier (OTA) |
| title_short | The design of an operational transconductance amplifier (OTA) |
| title_sort | design of an operational transconductance amplifier ota |
| topic | DRNTU::Engineering::Electrical and electronic engineering |
| url | http://hdl.handle.net/10356/70770 |
| work_keys_str_mv | AT yapdeep thedesignofanoperationaltransconductanceamplifierota AT yapdeep designofanoperationaltransconductanceamplifierota |