TC77 datasheet(2/22 Pages) MICROCHIP

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TC77

DS20092A-page 2

 2002 Microchip Technology Inc.

1.0

ELECTRICAL

CHARACTERISTICS

1.1

Absolute Maximum Ratings †

VDD........................................................................6.0V

All inputs and outputs w.r.t. VSS ..... -0.3V to VDD +0.3V

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

Ambient temp. with power applied .....-55°C to +125°C

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

ESD protection on all pins:

Human Body Model (HBM)..............................>4 kV

Machine Model (MM) ......................................>200V

† 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

operation listings of this specification is not implied. Exposure

to maximum rating conditions for extended periods may affect

device reliability.

PIN FUNCTION TABLE

Name

Function

SI/O

Serial Data Pin

SCK

Serial Clock

VSS

Ground

Chip Select (Active-Low)

No Connection

VDD

Power Supply

DC CHARACTERISTICS

Electrical Specifications: Unless otherwise noted, all parameters apply at VDD = 2.7V to 5.5V and

TA = -55°C to +125°C.

Parameters

Sym

Min

Typ

Max

Units

Conditions

Power Supply

Operating Voltage Range

VDD

2.7

—

5.5

Note 1

Operating Current

IDD

—

250

400

µA

Continuous Temperature

Conversion Mode

Power-On Reset Threshold

VPOR

1.2

1.6

2.2

DD falling or rising edge

Standby Supply Current

IDD-

STANDBY

—

0.1

1.0

µA

Shutdown Mode

Temperature to Bits Converter

Resolution

—

Bits

ADC LSb = 0.0625°C/bit

(Note 4)

Temperature Conversion Time

tCT

—

300

400

Temperature Accuracy

(Note 1)

TERR

-1.0

-2.0

-3.0

—

+1.0

+2.0

+3.0

°C

+25°C < TA < +65°C

-40°C < TA < +85°C

-55°C < TA < +125°C

TC77-3.3MXX: VDD = 3.3V

TC77-5.0MXX: VDD = 5.0V

Note 1: The TC77-3.3MXX and TC77-5.0MXX will operate from a supply voltage of 2.7V to 5.5V. However, the tem-

perature accuracy of the TC77-3.3MXX and TC77-5.0MXX is specified at the nominal operating voltages of

3.3V and 5.0V, respectively. As VDD varies from the nominal operating value, the accuracy may be

degraded (Refer to Figures 2-6 and 2-7).

2: All time measurements are measured with respect to the 50% point of the signal.

3: Load Capacitance, CL = 80 pF, is used for AC timing measurements of output signals.

4: Resolution = Temperature Range/No. of Bits = (+255°C – -256°C) / (213)

Resolution = 512/8192 = 0.0625°C/Bit

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