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ADL6332ACCZA-R7 bảng dữ liệu(PDF) 26 Page - Analog Devices |
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ADL6332ACCZA-R7 bảng dữ liệu(HTML) 26 Page - Analog Devices |
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26 / 55 page ![]() Data Sheet ADL6332 THEORY OF OPERATION analog.com Rev. A | 26 of 55 The ADL6332 integrates two amplifiers with fixed gain (AMP1 ≈ 12 dB and AMP2 ≈ 10 dB) and a DSA, which is adjustable from 0 dB to 24 dB in 1 dB step. The AMP1 and AMP2 have a bypass attenuation mode, which allows to disable these amplifiers individu- ally and route the RF signals through the fixed 12 dB attenuators. When an amplifier is configured in the bypass attenuation mode, the gain drops by approximately 24 dB for AMP1 and 22 dB for AMP2 (delta gain from AMP enabled to bypass attenuation mode); therefore, enabling an overall gain control range of 70 dB in 1 dB step when used with the 24 dB DSA. Additionally, in the bypass attenuation mode, the amplifiers’ current drops to almost zero. All circuit blocks of the ADL6332, as shown in Figure 93, are programmable through the SPI. RF INPUT AND OUTPUT The ADL6332 input impedance is 50 Ω single-ended, and the output impedance is 50 Ω differential, which provides an interface from a 50 Ω single-ended LNA to RF-ADCs with 50 Ω differential input impedance in a signal chain without any matching networks. |
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