S1T8515A Datasheet | Samsung Semiconductor

FM IF RECEIVER FOR FLEX PAGER INTRODUCTION The S1T8515A is a designed for FM detection on the FLEX pager set. It consists of an Oscillator, Mixer, Limiting IF Amp. Quadrature Detector, Regulator, RSSI (Received Signal Strength Indicator), Bit Rate Filter, and a 2-level / 4-level FSK parator. It has a 24-SSOP (0.65mm)Surface Mount Package. 24- SSOP- BD209 Features - - - - - - - Internal A/D converter for 4 level FSK (2-bit ADC) High transmission rate: 6400bps (Max.) Operating voltage range: VCC1 = 1.1 ~ 4.0V Typical supply current: 1.5m A at 1.4V Low battery detection circuit (alarm function): 1.05V Mixer operating frequency: 10 ~ 50MHz Package type: 24-SSOP (0.65mm) ORDERING INFORMATION Device S1T8515A01-U0B0 Package 24- SSOP- BD209 Operating Temperature - 20°C ~ +70°C FM IF RECEIVER FOR FLEX PAGER BLOCK DIAGRAM MI 24 2nd MIX GND 23 REGO REGC 22 21 AO 20 FSKO1 FSKO2 19 18 BSC 17 QC1 16 QC2 FSKR2 15 14 RSSI 13 1.0V Regulator Alarm FSK parator Quick Charge X-tal Osc. 1 OSCI 2 OSCO 3 MO 4 Vcc Limiting IF Amplifier 5 LI 6 LD 7 Quad Detector 8 QD 9...