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U2761B

器件名称: U2761B
功能描述: DECT RF / IF IC
文件大小: 426.53KB    共12页
生产厂商: TEMIC
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简  介:U2761B DECT RF / IF IC Description The U2761B is an integrated circuit manufactured in TEMIC’s UHF5S technology, designed for DECT application. It contains rejection mixer, IF amplifier, FM demodulator, baseband filter, RSSI, TX preamplifier and power-ramping generator for power amplifier. Features D Supply-voltage range 2.7 to 5.5 V D Low current consumption D Few external components D On-chip baseband filter D LO switch and TX preamplifier D Ramp-signal generator for power amplifier Block Diagram QUAD_TANK2 IF_TANK1 IF_TANK2 QUAD_TANK1 DEMOD_OUT VS1 VS2 IF_IN1 IF_IN2 IF amp 1 IF amp 2 Demodulator Bandgap MIXER_IN1 MIXER_IN2 IR mixer T/R switch TX driver TX_RF_OUT Ramp generator Control logic + – OpAmp OP_OUT MIXER_OUT1 RAMP_SET TX_ON MIXER_OUT2 RAMP_OUT LO_IN2 RX_ON OP_N LO_IN1 OP_P 14657 Figure 1. Block diagram Ordering Information Extended Type Number U2761B Package SSO28 Remarks TEMIC Semiconductor Rev. A4, 10-Mar-98 1 (11) Preliminary Information U2761B Pin Description RSSI PU 1 2 28 OP_OUT 27 OP_P 26 OP_N IF_TANK1 3 IF_TANK2 4 GND1 5 25 DEMOD_OUT 24 QUAD_TANK2 23 QUAD_TANK1 22 GND3 21 LO_IN2 MIXER_IN1 6 MIXER_IN2 7 GND2 8 TX_RF_OUT 9 VS1 10 IF_IN1 11 IF_IN2 12 RAMP_OUT 13 RAMP_SET 14 14808 20 LO_IN1 19 VS2 18 MIXER_OUT2 17 MIXER_OUT1 16 TX_ON 15 RX_ON Figure 2. Pinning Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 2……
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器件名 功能描述 生产厂商
U2761B DECT RF / IF IC TEMIC
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