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SI88622BD-IS Fiches technique(PDF) 6 Page - Silicon Laboratories

No de pièce SI88622BD-IS
Description  DUAL DIGITAL ISOLATORS WITH DC-DC CONVERTER
Download  45 Pages
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Fabricant  SILABS [Silicon Laboratories]
Site Internet  http://www.silabs.com
Logo SILABS - Silicon Laboratories

SI88622BD-IS Fiches technique(HTML) 6 Page - Silicon Laboratories

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Si88x2x
6
Rev. 0.5
Negative-Going Input
Threshold
VT–
All inputs falling
1.23
V
Input Hysteresis
VHYS
0.44
V
High Level Input Volt-
age
VIH
2.0
V
Low Level Input Volt-
age
VIL
——
0.8
V
High Level Output
Voltage
VOH
lOH =–4mA
VDDA,
VDDB
0.4
——
V
Low Level Output
Voltage
VOL
lOL =4mA
0.4
V
Input Leakage Cur-
rent
IL
——
±10
µA
Output Impedance
ZO
—50—
Supply Current, CLOAD =15pF
DC, VDDB = 3.3 V ± 10%
Si88x20
VDDA
VDDB
VDDA
VDDB
All inputs = 0
All inputs = 0
All inputs = 1
All inputs = 1
8.9
5.2
5.6
5.1
mA
Si88x21
VDDA
VDDB
VDDA
VDDB
All inputs = 0
All inputs = 0
All inputs = 1
All inputs = 1
7.9
4.9
5.9
3.0
mA
Table 2. Electrical Characteristics1 (Continued)
VIN =24 V; VDDA =VDDP = 3.0 to 5.5 V (see Figure 2) for all Si8822x/32x; VDDA = 4.3 V (see Figure 3) for all Si8842x/62x;
TA = –40 to 125 °C unless otherwise noted.
Parameter
Symbol
Test Condition
Min
Typ
Max
Unit
Notes:
1. Over recommended operating conditions as noted in Table 1.
2. VOUT = VSNS x (1 + R1/R2) + R1 x Ioffset
3. VDDP current needed for dc-dc circuits.
4. VDDA current needed for dc-dc circuits.
5. The nominal output impedance of an isolator driver channel is approximately 50
, ±40%, which is a combination of
the value of the on-chip series termination resistor and channel resistance of the output driver FET. When driving loads
where transmission line effects will be a factor, output pins should be appropriately terminated with controlled
impedance PCB traces.
6. tPSK(P-P) is the magnitude of the difference in propagation delay times measured between different units operating at
the same supply voltages, load, and ambient temperature.
7. Start-up time is the time period from when the UVLO threshold is exceeded to valid data at the output.


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