Cypress CY8C24994, CY8C24094, CY8C24894 manual Typical Agnd Noise with P24 Bypass

Page 33

CY8C24094, CY8C24794

CY8C24894, CY8C24994

When bypassed by a capacitor on P2[4], the noise of the analog ground signal distributed to each block is reduced by a factor of up to 5 (14 dB). This is at frequencies above the corner frequency defined by the on-chip 8.1k resistance and the external capacitor.

Figure 10-4. Typical AGND Noise with P2[4] Bypass

dBV/rtHz
10000						0
						0
						0.01
						0.1
						1.0
						10
1000
100
0.001	0.01	0.1	Freq (kHz)	1	10	100

At low frequencies, the opamp noise is proportional to 1/f, power independent, and determined by device geometry. At high frequencies, increased power level reduces the noise spectrum level.

Figure 10-5. Typical Opamp Noise

nV/rtHz
10000						PH_BH
						PH_BH
						PH_BL
						PM_BL
						PL_BL
1000
100
10
0.001	0.01	0.1	Freq (kHz)	1	10	100

Document Number: 38-12018 Rev. *M

Page 33 of 47

[+] Feedback

Image 33

Contents Logic Block Diagram FeaturesCypress Semiconductor Corporation 198 Champion Court O C C O R EPSoC Functional Overview Digital SystemPSoC Core Analog Multiplexer System Analog SystemPSoC Device Characteristics CyPros Consultants Solutions Library Technical SupportGetting Started Additional System ResourcesDevelopment Tools PSoC Designer Software SubsystemsIn-Circuit Emulator Designing with PSoC Designer Configure ComponentsOrganize and Connect Select ComponentsAcronyms Used Document ConventionsUnits of Measure Numeric Naming56-Pin Part Pinout Pin Information56-Pin Part Pinout with Xres Pin Part Pinout QFN2Pin Type Name Pin Type Name Description Digital Analog 68-Pin Part PinoutPin Part Pinout QFN 68-Pin Part Pinout On-Chip DebugBall Part Pinout Vfbga 100-Ball Vfbga Part PinoutPin Name Description PinCY8C24094 OCD Not for Production 100-Ball Vfbga Part Pinout On-Chip DebugVss Ground connection D10 100-Pin Part Pinout On-Chip Debug Pin Part Pinout TqfpPin Digital Analog Name Description Tqfp Register Conventions Register ReferenceRegister Mapping Tables Convention DescriptionRegister Map Bank 0 Table User Space Name Addr 0,Hex AccessRegister Map Bank 1 Table Configuration Space Access NameAccess Name Addr 1,Hex Units of Measure Symbol Unit of Measure Electrical SpecificationsAbsolute Maximum Ratings Symbol Description Min Typ Units Operating TemperatureOperating Temperature Symbol Description Min Typ Max Units Absolute Maximum RatingsDC Electrical Characteristics DC Chip Level SpecificationsDC General Purpose I/O Specifications DC Operational Amplifier Specifications DC Full-Speed USB SpecificationsPsrroa DC Low Power Comparator SpecificationsDC Analog Output Buffer Specifications TcvosoPsrrob DC Analog Reference Specifications Capacitor Unit Value Switched Capacitor DC Analog PSoC Block SpecificationsVM20 = 111b DC POR and LVD SpecificationsDC Programming Specifications AC Chip-Level Specifications AC Electrical CharacteristicsAC Full-Speed USB Specifications AC General Purpose I/O SpecificationsBwoa AC Operational Amplifier SpecificationsTypical Agnd Noise with P24 Bypass AC Digital Block Specifications AC Low Power Comparator SpecificationsAC Analog Output Buffer Specifications AC External Clock SpecificationsAC Programming Specifications Definition for Timing for Fast/Standard Mode on the I2C Bus AC I2C SpecificationsPin 8x8 mm QFN Packaging DimensionsImportant Note Pin 8x8 mm x 0.89 mm QFNBall 6x6 mm Vfbga Thermal Impedance Solder Reflow Peak TemperatureThermal Impedance for the Package Typical θJA VfbgaDevelopment Tool Selection SoftwareEvaluation Tools Emulation and Programming Accessories Accessories Emulation and ProgrammingDevice Programmers Pin Package Flex-Pod Kit18 Foot Kit19 Adapter20VFBGA21 Ordering InformationOrdering Code Definitions Document History Sales, Solutions, and Legal Information Worldwide Sales and Design Support Products PSoC SolutionsUSB

CY8C24094, CY8C24894, CY8C24994 specifications

The Cypress CY8C24994, CY8C24894, and CY8C24094 are part of the PSoC (Cypress Semiconductor's Programmable System-on-Chip) family, designed to integrate numerous functions onto a single chip for efficient performance and flexibility in various applications.

One of the key features of these devices is their combination of analog and digital components, allowing designers to create a customized system without the need for extensive external circuitry. Each of these chips incorporates an Arm Cortex-M3 processor core, which provides a powerful 32-bit architecture, enabling efficient execution of 32-bit operations while maintaining low power consumption.

The CY8C24994 is the most advanced in this series, supporting up to 128 GPIO (General Purpose Input/Output) pins, which enhances connectivity options. It features multiple programmable analog blocks, including op-amps, comparators, and DACs (Digital-to-Analog Converters), making it suitable for a variety of sensor interfacing and signal processing applications. Additionally, it supports USB communication, providing further versatility for applications requiring data exchange with a host device.

The CY8C24894 presents a slightly more cost-effective solution with slightly fewer GPIO pins and integrated features. It maintains many of the same core attributes as its counterpart, delivering excellent analog performance and several programmable digital blocks. It is suitable for applications requiring moderate computational capabilities along with flexibility in terms of peripherals and interfaces.

The CY8C24094, while positioned as a more basic option within this lineup, still provides essential functionalities for simpler tasks. With fewer pins and capabilities, it is ideal for applications where size and cost are more critical than extensive processing power.

All three devices utilize Cypress's proprietary CapSense technology, enabling touch-sensing capabilities without the need for mechanical buttons. This feature not only enhances user interaction but also contributes to the overall design's robustness and longevity.

In summary, the CY8C24994, CY8C24894, and CY8C24094 PSoC chips offer ample design flexibility with integrated analog and digital functionality, making them an excellent choice for developers aiming to create innovative embedded solutions across a wide range of applications, from consumer electronics to industrial control systems.