AFE7950 datasheet(32/126 Pages) TI2

32 / 126 page

4.12.1 TX Typical Characteristics 800MHz (continued)

Typical values at TA = +25°C with nominal supplies. Default conditions: TX input data rate = 491.52MSPS, fDAC =

11796.48MSPS (24x interpolation), interleave mode, 1st Nyquist zone output, PLL clock mode with fREF = 491.52MHz, AOUT =

–1dBFS, DSA = 0dB, Sin(x)/x enabled, DSA calibrated

DSA (dB)

-0.02

-0.01

0.01

0.02

-40qC

25qC

105qC

fDAC = 5898.24MSPS, interleave mode, matching at 0.8GHz,

channel with the median variation over DSA setting at 25°C

Differential Phase Error = PhaseOUT(DSA Setting – 1) –

PhaseOUT(DSA Setting) + 1

Figure 4-17. TX Calibrated Differential Phase Error vs DSA

Setting and Temperature at 0.85GHz

DSA (dB)

-0.02

0.02

0.04

0.06

0.08

0.1

0.12

0.14

0.16

0.18

0.2

-40qC

25qC

105qC

fDAC = 5898.24MSPS, interleave mode, matching at 0.8GHz

Integrated Phase Error = PhaseOUT(DSA Setting) –

PhaseOUT(DSA Setting = 0)

Figure 4-18. TX Uncalibrated Integrated Phase Error vs DSA

Setting and Temperature at 0.85GHz

DSA (dB)

-0.3

-0.25

-0.2

-0.15

-0.1

-0.05

-40qC

25qC

105qC

fDAC = 5898.24MSPS, interleave mode, matching at 0.8GHz

Integrated Phase Error = PhaseOUT(DSA Setting) –

PhaseOUT(DSA Setting = 0)

Figure 4-19. TX Calibrated Integrated Phase Error vs DSA

Setting and Temperature at 0.85GHz

DSA (dB)

-159

-154

-149

-144

-139

-134

1TX

2TX

3TX

4TX

fDAC = 5898.24MSPS, interleave mode, matching at 0.8GHz,

POUT = –13 dBFS

Figure 4-20. TX Output Noise vs Channel and Attenuation at

0.85GHz

AFE7950-SP

SBASAG7A – MARCH 2024 – REVISED AUGUST 2024

www.ti.com

Submit Document Feedback

Product Folder Links: AFE7950-SP

AFE7950 Datasheet(PDF) 32 Page - Texas Instruments

AFE7950 Datasheet(HTML) 32 Page - Texas Instruments

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL