AS8221-ASST Просмотр технического описания (PDF) - austriamicrosystems AG
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AS8221-ASST Datasheet PDF : 43 Pages
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AS8221
Data Sheet - Electrical Characteristics
Table 3. Electrical Characteristics
Symbol
Parameter
Conditions
Min Typ Max Units
ΔVBUS_COM
Matching between Data0 and
Data1 common mode voltage
VBUS_COM_D0 - VBUS_COM_D1
40 ≤ RL ≤ 55Ω
-200
0
200
mV
VBUS_DIFF_Idle
Absolute differential bus voltage
in bus idle mode
Load on BM/BM: 40Ω || 100pF
0
30
mV
IBPBMShortMax
IBMBPShortMax
IBPGNDShortMax
Absolute max current when BP is
shorted to BM
Absolute max current when BP is
shorted to GND
VBP=VBM
VBP= 0V
35
+100
mA
48
+100
mA
IBMGNDShortMax
Absolute max current when BM is
shorted to GND
VBM= 0V
48
+100
mA
IBP-5VShortMax
Absolute max current when BP is
shorted to -5 V
VBP= -5V
48
+100
mA
IBM-5VShortMax
Absolute max current when BM is
shorted to -5 V
VBM= -5V
48
+100
mA
IBP27VShortMax
Absolute max current when BP is
shorted to 27 V
VBP= 27V
71
+100
mA
IBM27VShortMax
Absolute max current when BM is
shorted to 27 V
VBM= 27V
71
+100
mA
IBP48VShortMax
Absolute max current when BP is
shorted to 48 V
VBP= 48V
72
+100
mA
IBM48VShortMax
Absolute max current when BM is
shorted to 48 V
VBM= 48V
72
+100
mA
tTxD_BUS01
Delay time from TxD to BUS
positive edge
tTxD_RISE = 5ns
22
50
ns
tTxD_BUS10
Delay time from TxD to BUS
negative edge
tTxD_FALL = 5ns
22
50
ns
tTxD_MISMATCH
Delay time from TxD to BUS
mismatch
tTxD_BUS10 - tTxD_BUS01
-4
0
4
ns
tBUS10
Fall time differential bus voltage
80% - 20% of VBUS
3.75
12 18.75
ns
tBUS01
tTxEN_BUS_Idle_Active
Rise time differential bus voltage
Delay time from TxEN to bus
active
20% - 80% of VBUS
3.75
12 18.75
ns
14
50
ns
tTxEN_BUS_Active_Idle
tTxEN_MISMATCH
tBGE_BUS_Idle_Active
Delay time from TxEN to bus idle
Delay time from TxEN to bus
mismatch
Delay time from BGE to bus
active
|tTxEN_BUS_Idle_Active -
tTxEN_BUS_Active_Idle|
10
50
ns
4
50
ns
15
50
ns
tBGE_BUS_Active_Idle
tBUS_Idle_Active
Delay time from BGE to bus idle
Differential bus voltage transition
time: idle to active
11
50
ns
5
30
ns
tBUS_Active_Idle
Differential bus voltage transition
time: active to idle
2
30
ns
tTxEN_timeout
TxEN timeout
1.5
4.9
15
ms
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