MIC281 datasheet(3/12 Pages) MICREL

3 / 12 page

November 2004

MIC281

Micrel

Absolute Maximum Ratings (Note 1)

Power Supply Voltage, VDD.....................................................3.8V

Voltage on T1 ........................................–0.3V to VDD+0.3V

Voltage on CLK, DATA....................................–0.3V to 6.0V

Current Into Any Pin ................................................. ±10mA

Power Dissipation, TA = 125°C................................109mW

Junction Temperature................................................ 150°C

Storage Temperature................................ –65°C to +150°C

ESD Ratings,

Note 7

Human Body Model ................................................ 1.5kV

Machine Model ........................................................ 200V

Soldering (SOT23-6 Package)

Vapor Phase (60s).........................................220 +5/–0°C

Infrared (15s) .................................................235 +5/–0°C

Operating Ratings (Note 2)

Power Supply Voltage, VDD......................... +3.0V to +3.6V

Ambient Temperature Range (TA) .............. –40°C to +85°C

Package Thermal Resistance (θJA)

SOT-23-6 ...........................................................230°C/W

Electrical Characteristics

For typical values, TA=25°C, VDD=3.3V unless otherwise noted. Bold values are for TMIN≤TA≤TMAX unless otherwise noted. Note 2

Symbol

Parameter

Condition

Min

Typ

Max

Units

Power Supply

IDD

Supply Current

T1 open; CLK=DATA=High; Normal Mode

0.23

0.4

Shutdown mode; T1 open; CLK = 100kHz;

µA

Note 5

Shutdown Mode; T1 open; CLK=DATA=High

µA

tPOR

Power-on reset time,

Note 5

VDD > VPOR

200

µs

VPOR

Power-on reset voltage

All registers reset to default values; A/D

2.65

2.95

conversions initiated

VHYST

Power-on reset hysteresis voltage

300

Note 5

Temperature-to-Digital Converter Characteristics

Accuracy,

Notes 3, 5, 6

0°C ≤ TD ≤ 100°C; 0°C ≤ TA ≤ 85°C;

°C

3.15V ≤ VDD ≤ 3.45V

–40°C ≤ TD ≤ 125°C; 0°C ≤ TA ≤ 85°C;

°C

3.15V ≤ VDD ≤ 3.45V

tCONV

Conversion time,

Note 5

200

240

Remote Temperature Input, T1

Current into External Diode

T1 forced to 1.0V, high level

192

400

µA

Note 5

Low level

µA

Serial Data I/O Pin, DATA

VOL

Low Output Voltage,

Note 4

IOL = 3mA

0.3

IOL = 6mA

0.5

VIL

Low Input Voltage

3.0V ≤ VDD ≤ 5.5V

0.8

VIH

High Input Voltage

3.0V ≤ VDD ≤ 5.5V

2.1

5.5

CIN

Input Capacitance,

Note 5

ILEAK

Input Current

µA

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