AD8561ARUZ

Current - Input Bias (Max):	6µA @ 5V
Base Part Number:	AD8561
Supplier Device Package:	8-TSSOP
Mounting Type:	Surface Mount
Package / Case:	8-TSSOP (0.173", 4.40mm Width)
Operating Temperature:	-40°C ~ 85°C
Hysteresis:	--
Propagation Delay (Max):	9.8ns
CMRR, PSRR (Typ):	85dB CMRR, 65dB PSRR
Current - Quiescent (Max):	6mA, 3.3mA, 5.5mA
Current - Output (Typ):	--
Series:	--
Voltage - Input Offset (Max):	7mV @ 5V
Voltage - Supply, Single/Dual (±):	3 V ~ 10 V, ±1.5 V ~ 5 V
Output Type:	CMOS, Complementary, TTL
Number of Elements:	1
Type:	General Purpose
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tube

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The AD8561ARUZ is a high speed, low power, rail-to-rail input/output voltage comparator from Analog Devices. It is designed to operate from a single +3V to +5.5V supply and can be used in a wide range of applications where a fast response time, high accuracy, and low power consumption are required. This device features an internal voltage reference, so it is well suited for applications that involve resistive or capacitive sensors or low level analog signals. It is also an ideal choice for active overvoltage protection in communications systems and motor control applications. In terms of its linear-comparator applications, the AD8561ARUZ is ideal for amplifying, filtering, and monitoring high-speed analog signals. The comparator has a rail-to-rail input voltage range of 0 V to VDD, with the input stage optimized for fast response time and low power consumption. It also has a rail-to-rail output voltage swing, which enables rail-to-rail monitoring of small signals without a resistor. Additionally, the 10 µm fabrication process of the integrated circuit makes it ideal for high-speed analog applications, such as video and data communications, as well as any other specialized comparator applications. The operating principle of the AD8561ARUZ is based on a set of operational amplifiers, comparators, and logic gates. The operational amplifier is responsible for the rail-to-rail input voltage range and provides high accuracy. Its bandwidth is optimized for the maximum voltage swing of the input voltage range, and its high-speed single-cycle settling time of 800 ns allows it to achieve a response time of only 5 µs in a typical application. Additionally, the low-power architecture of the device enables it to operate at a very low supply current, of only 9 mA. Comparators and logic gates are used for comparison and data output. The device has two inputs, INA and INB, which are compared and their corresponding output, OUTA and OUTB, are set and reset respectively. The logic gates are used to determine the state of the input signals, according to the following logic table:

INA	INB	OUTA	OUTB
0	1	0	1
0	0	1	0
1	0	0	0
1	1	0	0

This device includes an on-chip voltage reference and is capable of driving high currents. The outputs are open drain and can be driven to any potential up to the device’s supply voltage, VDD. Additionally, the device can be operated in either single-ended or differential modes, allowing for a wider range of applications. The AD8561ARUZ is a versatile, high-performance, and power-efficient linear comparator specifically designed for amplifying, filtering, and monitoring low level analog signals. Its rail-to-rail input and output voltage swings, along with its low power consumption and fast response time, make it well suited for a wide range of applications. This device is well suited for use in a variety of communications and motor control systems, as well as in any application that requires high accuracy and fast response times.

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