FM IF RECEIVER FOR FLEX PAGER
S1T8515A
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 comparator.
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.
5mA at 1.
4V Low battery detection circuit (alarm function): 1.
05V Mixer operating frequency: 10 ~ 50MHz Package type: 24-SSOP (0.
65mm)
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