User's Manual

Smart Machine Smart Decision

SIM5320A_Hardware Design_V1.01 2011-2-29

Note: The input signal voltage value in ADC must not be higher than 2.2V.

3.13.4 LDO

SIM5320A has a LDO power output, namely VREG_AUX. The LDO is available and output voltage is

2.85v by default, rated for 250mA. User can switch the LDO on or off by the AT command

“AT+CVAUXS” and configure its output voltage by the AT command “AT+CVAUXV”.

Table 34: Electronic characteristic

Symbol Description Min Typ Max Unit

VREG_AUX Output voltage 1.5 2.85 3.05 V

Output current - - 250 mA

4 RF Specification

4.1 RF Specification

Table 35: Conducted transmission power

Frequency Max Min

GSM850 33dBm ±2dB 5dBm ± 5dB

E-GSM900 33dBm ±2dB 5dBm ± 5dB

DCS1800 30dBm ±2dB 0dBm ± 5dB

PCS1900 30dBm ±2dB 0dBm ± 5dB

GSM850 (8-PSK) 27dBm ±3dB 5dBm ± 5dB

E-GSM900 (8-PSK) 27dBm ±3dB 5dBm ± 5dB

DCS1800 (8-PSK) 26dBm +3/-4dB 0dBm ±5dB

PCS1900(8-PSK) 26dBm +3/-4dB 0dBm ±5dB

WCDMA 2100 24dBm +1/-3dB -56dBm ±5dB

WCDMA 1900 24dBm +1/-3dB -56dBm ±5dB

WCDMA 850 24dBm +1/-3dB -56dBm ±5dB

WCDMA 900 24dBm + 1/-3dB -56dBm ±5dB