SI8462BB-A-IS1R Silicon Laboratories Inc, SI8462BB-A-IS1R Datasheet - Page 20
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SI8462BB-A-IS1R
Manufacturer Part Number
SI8462BB-A-IS1R
Description
IC ISOLATOR DGTL 6CH 16SOIC
Manufacturer
Silicon Laboratories Inc
Series
ISOpror
Datasheet
1.SI8462AB-A-IS1.pdf
(36 pages)
Specifications of SI8462BB-A-IS1R
Inputs - Side 1/side 2
4/2
Number Of Channels
6
Isolation Rating
2500Vrms
Voltage - Supply
2.7 V ~ 5.5 V
Data Rate
150Mbps
Propagation Delay
6ns
Output Type
Logic
Package / Case
16-SOIC (3.9mm Width)
Operating Temperature
-40°C ~ 125°C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Si8460/61/62/63
2. Functional Description
2.1. Theory of Operation
The operation of an Si846x 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 Si846x channel is shown in
Figure 3.
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 4 for more details.
20
A
Transmitter
OSCILLATOR
MODULATOR
Figure 3. Simplified Channel Diagram
RF
Figure 4. Modulation Scheme
Semiconductor-
Based Isolation
Rev. 1.3
Barrier
DEMODULATOR
Modulation Signal
Output Signal
Input Signal
Receiver
B