SAP51C-A-G1-R ZMDI, SAP51C-A-G1-R Datasheet - Page 30

• Manufacturer Part Number: SAP51C-A-G1-R
• Description: Interface - Specialized ASI
• Manufacturer: ZMDI

Specifications of SAP51C-A-G1-R

• Rohs: yes
• Product Type: Actuator Sensor Interface IC
• Operating Supply Voltage: 16 V to 34 V
• Supply Current: 6 mA
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: SOP-20
• Minimum Operating Temperature: - 25 C

4.1.2.
Table 13: AS-i Bus Load Properties
1
2
Table 14: CDC pin parameters
Note: A decoupling capacitor defines internal low-pass filter time constant; lower values decrease the
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
Data Sheet
October 20, 2011
Symbol Parameter
R
L
C
R
L
C
C
Symbol
V
C
Symbol Parameter
T
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.
the triple R
Complete Specification.
Subtracting the maximum parasitic capacitance of the external over voltage protection diode (20pF) either
IN1
IN2
CutOff
SAP5S / SAP51
Universal Actuator-Sensor Interface IC
CDC_IN
IN1
IN1
IN2
IN2
Zener
CDC
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 I
increase when the voltage allows the analog circuitry to fully operate.
Input Impedance (AS-i bus load)
Equivalent resistor of the IC
Equivalent inductor of the IC
Equivalent capacitor of the IC
Equivalent resistor of the IC
Equivalent inductor of the IC
Equivalent capacitor of the IC
Parasitic capacitance of the external
over-voltage protection diode (Zener
diode)
Chip temperature for over temperature cut off
Parameter
Input voltage range
External decoupling capacitor
IN1
, L
© 2011 Zentrum Mikroelektronik Dresden AG — Rev. 3.0
All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without
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changes without notice.
IN1
and C
IN1
or the triple R
IN2
, L
IN2
and C
13,5
13,5
13,5
Min
12
IN2
has to be reached by the IC to fulfill the AS-i
-0.3
Min
15 + (L-12mH)*10pF/mH
Typ
100
13,5
Max
30
20
UOUT
Min
125
V
Max
U5R
. The impedance will
Max
160
Unit
nF
V
Unit
30 of 63
Unit
°C
mH
mH
k
k
pF
pF
pF
Note
Note
Note
1,2
1,2
1,2
1,2
1,2
1,2
1