AFE7950-SP datasheet(35/126 Pages) TI2

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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

Pout (dBFS)

-32

-30

-28

-26

-24

-22

-20

-18

-16

-14

-12

-70

-68

-66

-64

-62

-60

-58

-56

-54

-52

1TX

2TX

3TX

4TX

Matching at 0.8GHz, single carrier 20MHz BW TM1.1 LTE

Figure 4-33. TX 20-MHz LTE ACPR vs Digital Level at 0.85GHz

Pout(dBFS)

-32

-30

-28

-26

-24

-22

-20

-18

-16

-14

-12

-70

-68

-66

-64

-62

-60

-58

-56

-54

-52

1TX

2TX

3TX

4TX

Matching at 0.8GHz, single carrier 20MHz BW TM1.1 LTE

Figure 4-34. TX 20MHz LTE alt-ACPR vs Digital Level at 0.85GHz

DSA (dB)

-70

-67

-64

-61

-58

-55

-52

1TX

2TX

3TX

4TX

Matching at 0.8GHz, single carrier 20MHz BW TM1.1 LTE

Figure 4-35. TX 20MHz LTE ACPR vs DSA at 0.85GHz

DSA (dB)

-72

-69

-66

-63

-60

-57

-54

-51

1TX

2TX

3TX

4TX

Matching at 0.8GHz, single carrier 20MHz BW TM1.1 LTE

Figure 4-36. TX 20-MHz LTE alt-ACPR vs DSA at 0.85GHz

Output Frequency (MHz)

600

750

900

1050

1200

1350

1500

-105

-100

-95

-90

-85

-80

-75

-70

-65

-60

-55

1TX, -12dBFS

1TX, -6dBFS

2TX, -12dBFS

2TX, -6dBFS

3TX, -12dBFS

3TX, -6dBFS

4TX, -12dBFS

4TX, -6dBFS

Matching at 0.8GHz, fDAC = 5898.2 GSPS, straight mode

Figure 4-37. TX HD2 vs Digital Amplitude and Output Frequency

at 0.85GHz

Output Frequency (MHz)

600

750

900

1050

1200

1350

1500

-105

-100

-95

-90

-85

-80

-75

-70

-65

-60

-55

1TX, -12dBFS

1TX, -6dBFS

2TX, -12dBFS

2TX, -6dBFS

3TX, -12dBFS

3TX, -6dBFS

4TX, -12dBFS

4TX, -6dBFS

Matching at 0.8GHz, fDAC = 8847.36GSPS, straight mode

Figure 4-38. TX HD2 vs Digital Amplitude and Output Frequency

at 0.85GHz

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AFE7950-SP

SBASAG7A – MARCH 2024 – REVISED AUGUST 2024

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