SI8900-1 Datasheet, PDF (1/30 Pages) Silicon Laboratories – ISOLATED MONITORING ADC

Si8900/1/2
ISOLATED MONITORING ADC
Features
 ADC
3 input channels
10-bit resolution
2 µs conversion time
 Isolated serial I/O port
UART (Si8900)
I²C/SMbus (Si8901)
2.5 MHz SPI port (Si8902)
 Transient immunity:
45 kV/µs (typ)
Applications
 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
 Isolated data acquisition
 AC mains monitor
 Solar inverters
Description
 Isolated temp/humidity sensing
 Switch mode power systems
 Telemetry
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), I²C/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.
Safety Approval (Pending)
 UL 1577 recognized
Upto5 kVrmsfor1minute
 CSA component notice 5A
approval
IEC 60950, 61010, 60601
 VDE certification conformity
 IED 60747-5-2 (VDE 0884 Part 2)
Ordering Information:
See page 25.
Pin Assignments
VDDA
VREF
AIN0
AIN1
AIN2
NC
RST
GNDA
Si8900
VDDB
NC
NC
Rx
Tx
NC
VDDB
GNDB
VDDA
VREF
AIN0
AIN1
AIN2
RST
RSDA
GNDA
Si8901
VDDB
NC
NC
SCL
SDA
NC
VDDB
GNDB
VDDA
RST
NC
VREF
AIN0
AIN1
AIN2
GNDA
Si8902
VDDB
NC
SDO
SCLK
SDI
EN
VDDB
GNDB
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.