 |
データシートサーチシステム |
|
|
データシートサーチシステム |
|
CY8C53 データシート(PDF) 50 Page - Cypress Semiconductor |
|
|
|||||||||||||||||||||||||||||
CY8C53 データシート(HTML) 50 Page - Cypress Semiconductor |
|
|
50 / 106 page  PRELIMINARY PSoC® 5: CY8C53 Family Datasheet Document Number: 001-66237 Rev. *A Page 50 of 106 8.4 Opamps The CY8C53 family of devices contain two general purpose opamps. Figure 8-5. Opamp The opamp is uncommitted and can be configured as a gain stage or voltage follower on external or internal signals. See Figure 8-6. In any configuration, the input and output signals can all be connected to the internal global signals and monitored with an ADC, or comparator. The configurations are implemented with switches between the signals and GPIO pins. Figure 8-6. Opamp Configurations The opamp has three speed modes, slow, medium, and fast. The slow mode consumes the least amount of quiescent power and the fast mode consumes the most power. The inputs are able to swing rail-to-rail. The output swing is capable of rail-to-rail operation at low current output, within 50 mV of the rails. When driving high current loads (about 25 mA) the output voltage may only get within 500 mV of the rails. 8.5 Programmable SC/CT Blocks The CY8C53 family of devices contains two switched capacitor/continuous time (SC/CT) blocks in a device. Each switched capacitor/continuous time block is built around a single rail-to-rail high bandwidth opamp. Switched capacitor is a circuit design technique that uses capacitors plus switches instead of resistors to create analog functions. These circuits work by moving charge between capacitors by opening and closing different switches. Nonoverlapping in phase clock signals control the switches, so that not all switches are ON simultaneously. The PSoC Creator tool offers a user friendly interface, which allows you to easily program the SC/CT blocks. Switch control and clock phase control configuration is done by PSoC Creator so users only need to determine the application use parameters such as gain, amplifier polarity, VREF connection, and so on. The same opamps and block interfaces are also connectable to an array of resistors which allows the construction of a variety of continuous time functions. The opamp and resistor array is programmable to perform various analog functions including Naked Operational Amplifier - Continuous Mode Unity-Gain Buffer - Continuous Mode Programmable Gain Amplifier (PGA) - Continuous Mode Transimpedance Amplifier (TIA) - Continuous Mode Up/Down Mixer - Continuous Mode Sample and Hold Mixer (NRZ S/H) - Switched Cap Mode First Order Analog to Digital Modulator - Switched Cap Mode 8.5.1 Naked Opamp The Naked Opamp presents both inputs and the output for connection to internal or external signals. The opamp has a unity gain bandwidth greater than 6.0 MHz and output drive current up to 650 µA. This is sufficient for buffering internal signals (such as DAC outputs) and driving external loads greater than 7.5 kohms. 8.5.2 Unity Gain The Unity Gain buffer is a Naked Opamp with the output directly connected to the inverting input for a gain of 1.00. It has a -3 dB bandwidth greater than 6.0 MHz. Opamp VREF GPIO GPIO = Analog Switch GPIO Analog Global Bus Analog Internal Bus Analog Global Bus Opamp Vout to Pin Vin Vout to GPIO Vp to GPIO b) External Uncommitted Opamp a) Voltage Follower Vout to Pin Vp Vn To Internal Signals c) Internal Uncommitted Opamp Vn to GPIO GPIO Pin Opamp Opamp [+] Feedback |
|
リンク URL |
| ALLDATASHEETはお客様のビジネスに役立ちますか？ [ DONATE ] |
Alldatasheetは | 広告 | お問い合わせ | プライバシーポリシー | データシートへのリンク | リンク交換 | メーカーリスト All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
Japanese ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
