AFE7901 datasheet(42/160 Pages) TI

tên linh kiện	AFE7901

Giải thích chi tiết về linh kiện	AFE7901 4T4R RF Sampling AFE with 12 GSPS DACs and 3 GSPS ADCs

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7.12.1 RX Typical Characteristics 30 MHz and 400 MHz (continued)

Typical values at TA = +25°C. Default conditions at 30MHz: ADC Sampling Rate = 1500 MSPS, output sample rate = 62.5

MSPS (decimate by 24x), PLL clock mode with fREF = 500 MHz, AIN = –3 dBFS, DSA setting = 3 dB. Default conditions at

400 MHz: ADC Sampling Rate = 1500 MSPS, output sample rate = 125 MSPS (decimate by 12x), PLL clock mode with fREF

= 500 MHz, AIN = –3 dBFS, DSA setting = 3 dB.

Integrated Phase Error = Phase(DSA Setting) – Phase(DSA

Setting = 0)

Figure 7-37. RX Calibrated Integrated Phase Error vs DSA

Setting at 400 MHz

fNCO = 400 MHz

Figure 7-38. RX Output FFT at 405 MHz and -3 dBFS

fNCO = 400 MHz

Figure 7-39. RX Output FFT at 405 MHz and -6 dBFS

fNCO = 400 MHz

Figure 7-40. RX Output FFT at 405 MHz and -12 dBFS

fNCO = 400 MHz

Figure 7-41. RX Output FFT at 405 MHz and -30 dBFS

fNCO = 400 MHz

Figure 7-42. RX Output FFT at 405 MHz and -60 dBFS

AFE7901

SBASAO5 – APRIL 2023

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