User's Manual

SIM800H Document
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2. Detail Block Diagram
Figure 3: Block diagram of SIM800H
3. Electrical and Reliability Characteristics
3.1. Absolute Maximum Ratings
The absolute maximum ratings stated in following table are stress ratings under non-operating conditions. Stresses
beyond any of these limits will cause permanent damage to SIM800H.
Table 1: Absolute maximum ratings
Symbol Parameter Min Typ Max Unit
VBAT Power supply voltage - - 4.5 V
VBUS - - 30 V VBUS
I
I
*
Input current - - 8 mA
GSM 850: 824–849 MHz (TX), 869–894 MHz (RX)
PCS 1900: 1850–1910 MHz (TX), 1930–1990 MHz (RX)