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AFE7901 数据表(PDF) 69 Page - Texas Instruments

部件名 AFE7901
功能描述  AFE7901 4T4R RF Sampling AFE with 12 GSPS DACs and 3 GSPS ADCs
PDF  160 Pages
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制造商  TI [Texas Instruments]
网页  http://www.ti.com
标志 TI - Texas Instruments

AFE7901 数据表(HTML) 69 Page - Texas Instruments

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7.12.6 RX Typical Characteristics 4.9 GHz (continued)
Typical values at TA = +25°C, ADC Sampling Rate = 2949.12 GHz. Default conditions: output sample rate = 491.52 MSPS
(decimate by 6), PLL clock mode with fREF = 491.52 MHz, AIN = –3 dBFS, DSA setting = 4 dB.
Temperature (qC)
-40
-25
-10
5
20
35
50
65
80
95
110
-156
-155.8
-155.6
-155.4
-155.2
-155
-154.8
DSA = 4dB
DSA = 12dB
With 4.9 GHz matching, 12.5-MHz offset from tone
Figure 7-185. RX Noise Spectral Density vs Temperature at 4.9
GHz
Input Amplitude (dBFS)
-30
-25
-20
-15
-10
-5
0
-157
-156
-155
-154
-153
-152
-151
-150
-149
-148
-147
-146
-145
-40 qC, DSA = 4dB
-40 qC, DSA = 12dB
25 qC, DSA = 4dB
25 qC, DSA = 12dB
110 qC, DSA = 4dB
110 qC, DSA = 12dB
With 4.9 GHz matching, DSA Setting = 12 dB, 12.5-MHz offset
from tone
Figure 7-186. RX Noise Spectral Density vs Input Amplitude and
Temperature at 4.9 GHz
Input Amplitude (dBFS)
-30
-25
-20
-15
-10
-5
0
-157
-156
-155
-154
-153
-152
-151
-150
-149
-148
-147
-146
-145
1RX, DSA = 4dB
1RX, DSA = 12dB
2RX, DSA = 4dB
2RX, DSA = 12dB
3RX, DSA = 4dB
3RX, DSA = 12dB
4RX, DSA = 4dB
4RX, DSA = 12dB
With 4.9 GHz matching, 12.5-MHz offset from tone
Figure 7-187. RX Noise Spectral Density vs Input Amplitude and
Channel at 4.9 GHz
DSA (dB)
0
2
4
6
8
10
12
14
16
18
20
-94
-89
-84
-79
-74
-69
-64
-40 qC
25 qC
110qC
With 4.9 GHz matching, each tone –7 dBFS, tone spacing =
20 MHz
Figure 7-188. RX IMD3 vs DSA Setting and Temperature at 4.9
GHz
Input Amplitude (dBFS)
-36
-33
-30
-27
-24
-21
-18
-15
-12
-9
-6
-130
-125
-120
-115
-110
-105
-100
-95
-90
-85
-80
-40 qC
25 qC
110qC
With 4.9 GHz matching, tone spacing = 20 MHz, DSA = 4 dB
Figure 7-189. RX IMD3 vs Input Level and Temperature at 4.9
GHz
Input Amplitude (dBFS)
-36
-33
-30
-27
-24
-21
-18
-15
-12
-9
-6
-125
-120
-115
-110
-105
-100
-95
-90
-85
-80
-75
-40 qC
25 qC
110qC
With 4.9 GHz matching, tone spacing = 20 MHz, DSA = 12 dB
Figure 7-190. RX IMD3 vs Input Level and Temperature at 4.9
GHz
www.ti.com
AFE7901
SBASAO5 – APRIL 2023
Copyright © 2023 Texas Instruments Incorporated
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