SAP5SD-B-G1-R datasheet(29/63 Pages) ETC2

29 / 63 page

SAP5S / SAP51

Universal Actuator-Sensor Interface IC

Data Sheet

July 17, 2012

the prior written consent of the copyright owner. The information furnished in this publication is PRELIMINARY and subject to

changes without notice.

29 of 62

4.1.2.

Input Impedance (AS-i bus load)

Table 13: AS-i Bus Load Properties

Symbol

Parameter

Min

Max

Unit

Note

RIN1

Equivalent resistor of the IC

13,5



1,2

LIN1

Equivalent inductor of the IC

13,5

1,2

CIN1

Equivalent capacitor of the IC

1,2

RIN2

Equivalent resistor of the IC

13,5



1,2

LIN2

Equivalent inductor of the IC

13,5

1,2

CIN2

Equivalent capacitor of the IC

15 + (L-12mH)*10pF/mH

1,2

CZener

Parasitic capacitance of the external

over-voltage protection diode (Zener

diode)

1 The equivalent circuit of a slave, which is calculated from the impedance of the IC and the paralleled external

over-voltage protection diode (Zener diode), has to satisfy the requirements of the AS-i Complete

Specification for Extended Address Mode slaves.

2 Subtracting the maximum parasitic capacitance of the external over voltage protection diode (20pF) either

the triple RIN1, LIN1 and CIN1 or the triple RIN2, LIN2 and CIN2 has to be reached by the IC to fulfill the AS-i

Complete Specification.

Table 14: CDC pin parameters

Symbol

Parameter

Min

Typ

Max

Unit

Note

VCDC_IN

Input voltage range

-0.3

VU5R

CCDC

External decoupling capacitor

100

Note: A decoupling capacitor defines internal low-pass filter time constant; lower values decrease the

impedance but improve the turn-on time. Higher values do not improve the impedance but do increase

the turn-on time. The turn-on time also depends on the load capacitor at UOUT. After connecting the

slave to the power the capacitor is charged with the maximum current IUOUT. The impedance will

increase when the voltage allows the analog circuitry to fully operate.

4.2.

Thermal Protection

The IC continuously observes its silicon die temperature. If the temperature rises above around 140°C for

more than 2 seconds the IC will cut off the UOUT output from the internal voltage reference. Thus the current

consumption of the IC will drop down to its operating current (refer to Table 2). In order to prevent an

undesired drawing of transmit current the transmitter is also disabled in case the over temperature cut off

condition is true.

After over temperature cut off, the output voltage at UOUT will be restored and the IC performs an initialization

if the die temperature has cooled down by 10 … 20°C with an additional time delay of 1s.

Table 15: Cut Off Temperature

Symbol Parameter

Min

Max

Unit

Note

TCutOff

Chip temperature for over temperature cut off

125

160

°C

SAP5SD-B-G1-R 数据表(PDF) 29 Page - List of Unclassifed Manufacturers

SAP5SD-B-G1-R 数据表(HTML) 29 Page - List of Unclassifed Manufacturers

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63

数据表下载

链接网址

SAP5SD-B-G1-R 数据表(PDF) 29 Page - List of Unclassifed Manufacturers

SAP5SD-B-G1-R 数据表(HTML) 29 Page - List of Unclassifed Manufacturers

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63

数据表 下载

链接网址

数据表下载