Si8900/1/2
I
SOLA TED
M
ONITORING
ADC
Features
ADC
3
input channels
10-bit resolution
2 µs conversion time
Isolated serial I/O port
UART
I
(Si8900)
C/SMbus (Si8901)
2.5 MHz SPI port (Si8902)
2
Transient immunity:
45 kV/µs (typ)
Temperature range:
–40 to +85 °C
>60-year life at rated working
voltage
CSA component notice 5A
approval
IEC 60950, 61010, 60601
VDE/IEC 60747-5-2
UL1577 recognized
Up
to 5 kVrms for 1 minute
Ordering Information:
See page 25.
Applications
Isolated data acquisition
AC mains monitor
Solar inverters
Isolated temp/humidity sensing
Switch mode power systems
Telemetry
Pin Assignments
VDDA
VREF
AIN0
AIN1
VDDB
NC
NC
Rx
Tx
NC
VDDB
GNDB
VDDB
NC
NC
SCL
SDA
NC
VDDB
GNDB
Description
The Si8900/1/2 series of isolated monitoring ADCs are useful as linear
signal galvanic isolators, level shifters, and/or ground loop eliminators in
many applications including power-delivery systems and solar inverters.
These devices integrate a 10-bit SAR ADC subsystem, supervisory state
machine and isolated UART (Si8900), I
2
C/SMbus port (Si8901), or SPI
Port (Si8902) in a single package. Based on Silicon Labs’ proprietary
CMOS isolation technology, ordering options include a choice of 2.5 or
5 kV isolation ratings. All products are safety certified by UL, CSA, and
VDE (pending). The Si8900/1/2 devices offer a typical common-mode
transient immunity performance of 45 kV/µs for robust performance in
noisy and high-voltage environments. Devices in this family are available
in 16-pin SOIC wide-body packages.
AIN2
NC
RST
GNDA
VDDA
VREF
AIN0
AIN1
AIN2
RST
RSDA
Si8900
Si8901
Safety Approval (Pending)
GNDA
UL 1577 recognized
to 5
Up
kVrms for 1 minute
VDE certification conformity
IED 60747-5-2 (VDE 0884 Part 2)
VDDA
RST
NC
VREF
AIN0
AIN1
AIN2
GNDA
VDDB
NC
SDO
SCLK
SDI
EN
VDDB
GNDB
CSA component notice 5A
approval
IEC
60950, 61010, 60601
Si8902
Rev. 1.0 6/12
Copyright © 2012 by Silicon Laboratories
Si8900/1/2
This information applies to a product under development. Its characteristics and specifications are subject to change without notice.
SILABS [ SILICON LABORATORIES ]
