STA027 datasheet(10/44 Pages) STMICROELECTRONICS

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3 Electrical Specification

STA027

10/44

CD00066274

Table 6.

DC electrical characteristics

Note: 1 Takes into account 200mV voltage drop in both supply lines.

2 X is the source/sink current under worst case conditions and is reflected in the name of the I/O

cell according to the drive capability.

Table 7.

Note: 1 Min. condition: VDD = 2.7V, 125°C Min process Max. condition: VDD = 3.6V, -20°C Max.

Table 8.

Power Dissipation

Note:

power measurements refer to encoder mode.

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Unit

Note

VIL

Low Level Input Voltage

0.2*VCC

VIH

High Level Input Voltage

0.8*VCC

Vol

Low Level Output Voltage

Iol = Xma

0.4V

1, 2

Voh

High Level Output Voltage

0.85*VCC

V1, 2

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Unit

Note

Ipu

Pull-up current

Vi = 0V; pin numbers 7, 24

and 26

-25

-66

-125

µA1

Rpu

Equivalent Pull-up

Resistance

Ω

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Unit

Note

Power Dissipation@ VDD =

2.4V

Sampling_freq

≤24 kHz

165

Sampling_freq

≤32 kHz

170

Sampling_freq

≤48 kHz

185

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