CAT8900A204TBGT3

Noise - 0.1Hz to 10Hz:	50µVp-p
Base Part Number:	CAT8900
Supplier Device Package:	SOT-23-3
Package / Case:	TO-236-3, SC-59, SOT-23-3
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Current - Supply:	800nA
Voltage - Input:	2.7 V ~ 5.5 V
Noise - 10Hz to 10kHz:	--
Series:	--
Temperature Coefficient:	50ppm/°C
Tolerance:	±0.024%
Current - Output:	10mA
Voltage - Output (Min/Fixed):	2.048V
Output Type:	Fixed
Reference Type:	Series
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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Introduction

The CAT8900A204TBGT3 (CAT8900) is a precision Programmable Voltage Reference (PVR) from Power Integrations, an industry leader in integrated power management and advanced power amplification solutions. PVRs are precision voltage references that play a critical role in power supply and system performance. The CAT8900 is an especially versatile and sophisticated PVR that offers multiple operating modes to suit various application needs. It combines the accuracy, low impedance, and excellent line and load regulation of a PVR with additional power supply monitoring and system protection features. This comprehensive flexibility makes it suitable for a multitude of application fields and has helped make the CAT8900 the choice for a variety of applications. This article will discuss its application in detail as well as the underlying operating principles.

Application Field & Working Principle of CAT8900

The CAT8900 is designed to complement the broad range of PVRs and PMICs available from Power Integrations with robust features and excellent performance. Its application field is wide, ranging from communications and industrial control systems to mobile computing and automotive applications. In these applications the CAT8900 can be used in a variety of roles, such as voltage regulator, voltage reference, system monitoring, and protection.The CAT8900 is an integrated programmable reference that can be set to one of five different voltage reference settings, ranging from 0.95V to 4.20V. This programmable range provides designers with the flexibility needed to efficiently respond to various system requirements. Additionally, the CAT8900 provides a proprietary Enhanced Accuracy mode that allows for even tighter voltage control, helping ensure greater system reliability.The CAT8900 also features a programmable Low Line Disable setting. This low line disable setting allows designers to specify a predetermined threshold below which the CAT8900 automatically shuts down. This feature can be used to protect sensitive system components by preventing power supply voltages from dropping too low.Moreover, the CAT8900 includes a programmable Operating Voltage Monitor (OVM) that monitors the supply voltage and protects against undervoltage conditions. The OVM can be programmed to a predetermined threshold where it will send an interrupt signal to the system if the supply voltage drops below this threshold. This feature can be used to improve system reliability and ensure that the supply voltage remains above the critical level.In addition to its integrated protection features, the CAT8900 can be configured as dual or quad outputs making it suitable for applications that require multiple voltage references. Due to its unique combination of programmability, accuracy, and integrated monitoring, the CAT8900 is well suited for automotive, industrial, and communications applications.At the heart of the CAT8900\' s performance is a sophisticated circuitry that provides its excellent line and load regulations, exceptional accuracy, and low noise. This circuitry employs a precision voltage reference section that provides the foundation of the CAT8900\'s performance. This reference section contains a Bandgap reference, current mirror, and precision voltage divider which together form a stable and accurate voltage reference that sets the CAT8900\'s precise output voltages.The CAT8900 also features a CMOS-compatible, high-precision programmable control network which serves as the basis for the device\'s adjustable voltage references and protection features. This control network consists of two DACs (Digital to Analog Converters) and an ADC (Analog to Digital Converter) which together enable the CAT8900 to accurately measure, monitor, and adjust its output voltages in response to changing system requirements.All these features, combined with the voltage reference section, provide designers with a powerful and flexible tool to monitor and protect sensitive system components. The CAT8900 has also been designed to meet a wide range of environmental and operating conditions, making it suitable for a variety of applications.

Conclusion

In conclusion, the CAT8900A204TBGT3 is a precision Programmable Voltage Reference (PVR) developed by Power Integrations which is well suited for a variety of applications. The CAT8900 incorporates a variety of features, such as multiple operating modes, low line disable setting, operating voltage monitor and dual or quad output configuration, all of which make it suitable for use in automotive, industrial and communications applications. At the heart of the CAT8900 lies a sophisticated circuitry that blends precision voltage reference section, with CMOS-compatible programmable control network, providing excellent line and load regulations, accuracy and low noise. Thus, the CAT8900 provides a powerful and flexible tool to accurately monitor and protect sensitive system components.

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