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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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HT9015 датащи(PDF) 1 Page - Holtek Semiconductor Inc |
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HT9015 датащи(HTML) 1 Page - Holtek Semiconductor Inc |
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1 / 23 page  HT9015 RF Single Chip for Cordless Phone 1 April 10, 2000 Features · Operating voltage: 2.7V~6V · Extremely low power consumption current - ICC=0mA (typ.) in battery-saving mode - ICC= 8.5mA (typ.) in standby mode - ICC= 13.5mA (typ.) for communication · Built-in IF decoder, compander and PLL · IF decoder - 1st/2nd Mixers, RX VCO - RSSI quadrature detector, IF AMP - Noise detector · Compander - Expander, Compressor, Limiter - Receive AMP, MIC AMP, PRE AMP · PLL - RX PLL, TX PLL - Local oscillator - Data latch control - Unlock detector · Four threshold variable battery alarms General Description The HT9015 is an RF single chip for cordless phone systems. Internally these are three major parts, a PLL, an IF decoder and a compander. The PLL provides radio channel selection for either the transmitter or receiver. Frequency locking status of the selected channel can be monitored by a control register. The IF decoder provides two frequency down converters that let high frequency signals pass through a mixer and local oscillator to be low- ered for frequency even base band signals. It also provides an RSSI (receiver signal strength indicator) function to detect the IF output sig- nal strength and built-in noise detector for S/N quality. The compander provides better S/N ratio for audio signal processing. The HT9015 has a wide-range applications in FM/FSK, Transmitting/Receiving of VHF bandwidth including cordless phone, narrow band voice and data transceiver systems. The most significant advantage of the HT9015 is in the reduction of many external compo- nents making it well suited for cordless phone baseset, handset radio section. Preliminary |
Аналогичный номер детали - HT9015 |
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Аналогичное описание - HT9015 |
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