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STVVGLNA bảng dữ liệu(PDF) 1 Page - STMicroelectronics |
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1 / 4 page Data brief For further information contact your local STMicroelectronics sales office. June 2011 Doc ID 018892 Rev 1 1/4 4 STVVGLNA General-purpose, variable-gain, low-noise, RF amplifier for broadcast receiver applications Features ■ 75- Ω single-ended input impedance ■ 75- Ω single-ended or 150-Ω differential output impedance ■ Dual differential or single-ended outputs ■ Single 3.3-V DC supply ■ Input frequency range 50 to 2150 MHz ■ Fully integrated RF AGC with power monitoring ■ Low external component count ■ Low power consumption (145 mW typical) ■ Temperature range -35 °C to 85 °C ■ Compatible with 5-V and 3.3-V I2C bus ■ I2C bus control (option) ■ Four selectable I2C addresses C8,CA,CC,CE Applications ■ Satellite set-top boxes ■ SMATV RF accessories ■ LNBs ■ DVB-T active indoor antennas Package ■ VFQFPN-16L 3x3x0.85 mm3 with exposed pad down (EPD) ■ Environmentally friendly packaging, RoHS (2002/95/EC) compliant. Description The STVVGLNA is a general-purpose, low-noise amplifier with a gain range of -17 dB to +15 dB. Its gain is regulated either autonomously by an integrated AGC loop or by software control. It can be used, for example, as an input amplifier for a satellite set-top box. Figure 1. STVVGLNA block diagram STVVGLNA SCL SDA VAGCI VAGCO AGC loop I2C TV1 tuner DVR tuner F www.st.com |
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