S1T8515A - Samsung semiconductor

S1T8515A FM IF RECEIVER FOR FLEX PAGER

Pin No 1 2 3 4 5 6 7 8 9 10 11 12 Symbol OSCI OSCO MO VCC LI LD FSKR1 QD C1 C2 C3 FIL VAR Description Oscillator input (Base). The oscillator is an internally biased colpitts type. Oscillator output (Emitter). Mixer output (Output impedance ≈ 1.5kΩ) Connect a 455kHz filter between this pin and the LI. Power supply voltage. IF limiter amplifier input (Input i.

Features

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• 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: 1.5mA 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 1 S1T8515A 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.