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AM7808 датащи(PDF) 12 Page - List of Unclassifed Manufacturers |
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AM7808 датащи(HTML) 12 Page - List of Unclassifed Manufacturers |
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12 / 20 page ![]() Rev C Preliminary Amalfi Confidential Page 12 475 Alberto Way, Ste 200, Los Gatos, CA 95032 • Tel: 408-399-5360 • Fax: 408-399-5362 • www.amalfi.com Preliminary Device Specification AM7808 Pin-Out Information Pin Name Description Details 1, 2, 4, 5, 8, 9, 13, 16, 17, 18, 19, 20, 21, 23, 28, 29, 30, 31, 32 GND Ground 3 VBAT2 Secondary Power Supply This should be connected directly to the battery 6 RFIN_HB RF Input – DCS1800/PCS1900 50 Ω input, DC blocked 7 RFIN_LB RF Input – GSM850/900 50 Ω input, DC blocked 10 TX_EN Enable power core for output power Logic ‘Low’=Disabled or RX mode Logic ‘High’=Enable Output Power This pin is a high impedance CMOS input with no pull-up or pull-down resistors. 11 VRAMP Analog Power Control Signal Input 350kHz Low-Pass filter is integrated into the device. No external filtering is required. 12 SW1 Control signal selecting band of operation Logic ‘Low’=Low-band Logic ‘High’=High-band This pin is a high impedance CMOS input with no pull-up or pull-down resistors. 14 ENABLE Standby control Logic ‘Low’=Standby Mode Logic ‘High’=TX or RX mode This pin is a high impedance CMOS input with no pull-up or pull-down resistors. 15 VBAT1 Primary Power Supply This should be connected directly to the battery 22 ANT Antenna port 50 Ω input/output 24, 27 NC No Connect Do not connect these pins 25 RX1 RX Port. RX1 interchangeable with RX2 50 Ω input/output 26 RX2 RX Port. RX2 interchangeable with RX1 50 Ω input/output |
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