AFE7901IALK datasheet(79/160 Pages) TI

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7.12.8 TX Typical Characteristics at 30 MHz and 400 MHz (continued)

Typical values at TA = +25°C with nominal supplies. Default conditions: TX input data rate = 125 MSPS, fDAC = 6000

MSPS (48x interpolation), interleave mode, 1st Nyquist zone output, PLL clock mode with fREF = 500 MHz. Additional default

conditions for all plots, AOUT = –1 dBFS, DSA = 0 dB, Sin(x)/x enabled, DSA calibrated, TX Clock Dither Enabled

DSA Setting (dB)

-0.5

-0.4

-0.3

-0.2

-0.1

0.1

0.2

0.3

0.4

0.5

Temp = -40C

Temp = -25C

Temp = 105C

Integrated Gain Error = POUT(DSA Setting) –

POUT(DSASetting = 0) + (DSA Setting)

Figure 7-239. Uncalibrated TX Integrated Gain Error (INL) at 30

MHz

DSA Setting (dB)

-0.5

-0.4

-0.3

-0.2

-0.1

0.1

0.2

0.3

0.4

0.5

Temp = -40C

Temp = -25C

Temp = 105C

Integrated Gain Error = POUT(DSA Setting) –

POUT(DSASetting = 0) + (DSA Setting)

Figure 7-240. Calibrated TX Integrated Gain Error (INL) at 30

MHz

DSA Setting (dB)

-0.1

-0.08

-0.06

-0.04

-0.02

0.02

0.04

0.06

0.08

0.1

Temp = -40C

Temp = -25C

Temp = 105C

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

PhaseOUT(DSA Setting)

Figure 7-241. Uncalibrated TX Differential Phase Error (DNL) at

30 MHz

DSA Setting (dB)

-1

-0.8

-0.6

-0.4

-0.2

0.2

0.4

0.6

0.8

Temp = -40C

Temp = -25C

Temp = 105C

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

PhaseOUT(DSA Setting)

Figure 7-242. Calibrated TX Differential Phase Error (DNL) at 30

MHz

DSA Setting (dB)

-1

-0.8

-0.6

-0.4

-0.2

0.2

0.4

0.6

0.8

Temp = -40C

Temp = -25C

Temp = 105C

Integrated Phase Error = PhaseOUT(DSA Setting) –

PhaseOUT(DSASetting = 0)

Figure 7-243. Uncalibrated TX Integrated Phase Error (INL) at 30

MHz

DSA Setting (dB)

-1

-0.8

-0.6

-0.4

-0.2

0.2

0.4

0.6

0.8

Temp = -40C

Temp = -25C

Temp = 105C

Integrated Phase Error = PhaseOUT(DSA Setting) –

PhaseOUT(DSASetting = 0)

Figure 7-244. Calibrated TX Integrated Phase Error (INL) at 30

MHz

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AFE7901

SBASAO5 – APRIL 2023

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