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S1T8515A - FM IF RECEIVER FOR FLEX PAGER

General Description

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).

Key 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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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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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.