MCP656U datasheet(3/46 Pages) MICROCHIP

Part #	MCP656U

Description	1.8V Low-Power Open-Drain Output Comparator

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Manufacturer	MICROCHIP [Microchip Technology]

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 2011 Microchip Technology Inc.

DS22143C-page 3

MCP6566/6R/6U/7/9

1.0

ELECTRICAL

CHARACTERISTICS

1.1

Maximum Ratings*

VDD - VSS ....................................................................... 6.5V

Open-Drain Output.............................................VSS + 10.5V

All other inputs and outputs...........VSS – 0.3V to VDD + 0.3V

Difference Input voltage ......................................|VDD - VSS|

Output Short Circuit Current .................................... ±25 mA

Current at Input Pins .................................................. ±2 mA

Current at Output and Supply Pins .......................... ±50 mA

Storage temperature ................................... -65°C to +150°C

Ambient temp. with power applied .............. -40°C to +125°C

Junction temp............................................................ +150°C

ESD protection on all pins (HBM/MM)

4 kV/300V

*Notice: Stresses above those listed under “Maximum

Ratings” may cause permanent damage to the device. This is

a stress rating only and functional operation of the device at

those or any other conditions above those indicated in the

operational listings of this specification is not implied. Expo-

sure to maximum rating conditions for extended periods may

affect device reliability.

DC CHARACTERISTICS

Electrical Characteristics: Unless otherwise indicated: V

DD = +1.8V to +5.5V, VSS = GND, TA = +25°C, VIN+ = VDD/2, VIN- = VSS,

and RPull-Up = 20 k to VPU = VDD (see Figure 1-1).

Parameters

Symbol

Min

Typ

Max

Units

Conditions

Power Supply

Supply Voltage

VDD

1.8

—

5.5

V

Quiescent Current per comparator

IQ

60

100

130

µA

IOUT = 0

Power Supply Rejection Ratio

PSRR

63

70

—

dB

VCM = VSS

Input

Input Offset Voltage

VOS

-10

3+10

mV

VCM = VSS (Note 1)

Input Offset Drift

V

OS/T—

2—

µV/°C

VCM = VSS

Input Offset Current

IOS

—

1—

pA

VCM = VSS

Input Bias Current

IB

—1

—

pA

TA = +25°C, VIN- = VDD/2

—60

—

pA

TA = +85°C, VIN- = VDD/2

—

1500

5000

pA

TA = +125°C, VIN- = VDD/2

Input Hysteresis Voltage

VHYST

1.0

—

5.0

mV

VCM = VSS (Notes 1, 2)

Input Hysteresis Linear Temp. Co.

TC1

—10

—

µV/°C

Input Hysteresis Quadratic Temp. Co.

TC2

—0.3

—

µV/°C2

Common-Mode Input Voltage Range

VCMR

VSS0.2

—

VDD+0.2

V

VDD = 1.8V

VSS0.3

—

VDD+0.3

V

VDD = 5.5V

Common-Mode Rejection Ratio

CMRR

54

66

—

dB

VCM= -0.3V to VDD+0.3V, VDD = 5.5V

50

63

—

dB

VCM= VDD/2 to VDD+0.3V, VDD = 5.5V

54

65

—

dB

VCM= -0.3V to VDD/2, VDD = 5.5V

Common Mode Input Impedance

ZCM

—1013||4

—

||pF

Differential Input Impedance

ZDIFF

—1013||2

—

||pF

Note 1:

The input offset voltage is the center of the input-referred trip points. The input hysteresis is the difference between the

input-referred trip points.

2:

VHYST at different temperatures is estimated using VHYST (TA) = VHYST @ +25°C + (TA - 25°C) TC1 + (TA - 25°C)

2 TC

2.

3:

Limit the output current to Absolute Maximum Rating of 50 mA.

4:

The pull-up voltage for the open drain output VPULL_UP can be as high as the absolute maximum rating of 10.5V. In this

case, IOH_leak can be higher than 1 µA (see Figure 2-30).

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