SI8430AB-D-IS1 Silicon Laboratories Inc, SI8430AB-D-IS1 Datasheet - Page 17
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SI8430AB-D-IS1
Manufacturer Part Number
SI8430AB-D-IS1
Description
IC ISOLATOR 3CH 5.5V 16-SOIC
Manufacturer
Silicon Laboratories Inc
Series
ISOpror
Datasheet
1.SI8431AB-D-IS.pdf
(36 pages)
Specifications of SI8430AB-D-IS1
Number Of Channels
3
Package / Case
16-SOIC (0.300", 7.5mm Width)
Inputs - Side 1/side 2
3/0
Isolation Rating
2500Vrms
Voltage - Supply
2.7 V ~ 5.5 V
Data Rate
1Mbps
Propagation Delay
35ns
Output Type
Tri-State
Operating Temperature
-40°C ~ 125°C
Mounting Style
SMD/SMT
Propagation Delay Time
35 ns
Supply Voltage (max)
5.5 V
Supply Voltage (min)
2.7 V
Supply Current
6 mA
Maximum Operating Temperature
+ 125 C
Minimum Operating Temperature
- 40 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
Other names
336-1757-5
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
SI8430AB-D-IS1R
Manufacturer:
PHILIPS
Quantity:
1 156
2. Functional Description
2.1. Theory of Operation
The operation of an Si843x channel is analogous to that of an opto coupler, except an RF carrier is modulated
instead of light. This simple architecture provides a robust isolated data path and requires no special
considerations or initialization at start-up. A simplified block diagram for a single Si843x channel is shown in
Figure 5.
A channel consists of an RF Transmitter and RF Receiver separated by a semiconductor-based isolation barrier.
Referring to the Transmitter, input A modulates the carrier provided by an RF oscillator using on/off keying. The
Receiver contains a demodulator that decodes the input state according to its RF energy content and applies the
result to output B via the output driver. This RF on/off keying scheme is superior to pulse code schemes as it
provides best-in-class noise immunity, low power consumption, and better immunity to magnetic fields. See
Figure 6 for more details.
A
Transmitter
OSCILLATOR
MODULATOR
Figure 5. Simplified Channel Diagram
RF
Figure 6. Modulation Scheme
Semiconductor-
Based Isolation
Rev. 1.3
Barrier
DEMODULATOR
Modulation Signal
Output Signal
Input Signal
Receiver
Si8430/31/35
B
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