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ML2751DT Arkusz danych(PDF) 1 Page - Micro Linear Corporation |
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ML2751DT Arkusz danych(HTML) 1 Page - Micro Linear Corporation |
1 / 10 page January, 2000 DATASHEET n Fully integrated Power Amplifier, Low Noise Amplifier, and PIN diode drivers n 100mW Power Amplifier n Single supply, 2.7V to 4.5V operating range n PA output: +21 dBm at 3.0V, 35dB gain, 35% efficiency at 3.3V after harmonic filter; integrated PA ramp control n LNA: noise figure of 2.5dB, –15dBm 3rd-order intercept point, and –25dBm GENERAL DESCRIPTION ML2751 Power Amplifier and LNA FEATURES The 2751 is a 900 MHz ISM band radio front-end intended for use in half duplex radio applications such as cordless phones and FCC Part 15 compliant devices. It integrates a power amplifier (PA), a Low Noise Amplifier (LNA), Pin Diode drivers for an external transmit/receive switch, and control circuits. The 100mW power amplifier has output power control with a >20dB range. The ML2751 can be used to increase battery life and offers output power ramp control in TDMA applications. An internal LNA eliminates the need for a discrete design. PIN diode drivers control the transmit/receive switch directly. Internal logic individually enables the LNA, PA, and PIN diode drivers. A power down mode to minimize current consumption is included. n 900 MHz FCC Part 15 Radios n 900 MHz Cordless Telephones n TDD / TDMA Radios APPLICATIONS SIMPLIFIED BLOCK DIAGRAM PRELIMINARY PIN DIODE DRIVERS RLNI RAMP GEN. CONT. BLOCK TRFI TPS, PAON, FEEN LNA PINB PIN TRFO RRFO PA POWER CONTROL AMP ML2751 RF PIN DIODE SWITCH ML2721 BATTERY Memory LOOP FILTER Keypad Display Mic. Speaker Ringer Watch Osc. Xtal Baseband IC (MODEM CODEC Protocol MMI Control) |
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Podobny opis - ML2751DT |
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