AFE7901 datasheet(90/160 Pages) TI

90 / 160 page

7.12.9 TX Typical Characteristics at 800 MHz

Typical values at TA = +25°C with nominal supplies. Unless otherwise noted, TX input data rate = 491.52 MSPS, fDAC =

11796.48 MSPS, interleave mode, AOUT = –1 dBFS, 1st Nyquist zone output, Internal PLL, fREF = 491.52 MSPS, 24x

Interpolation, DSA = 0 dB, Sin(x)/x enabled, DSA calibrated, TX Clock Dither Enabled

Output Frequency (MHz)

600

750

900

1050

1200

1350

1500

3.5

4.5

5.5

6.5

1TX

2TX

3TX

4TX

Including PCB and cable losses, Aout = -0.5dFBS, DSA = 0,

0.8 GHz matching

Figure 7-303. TX Full Scale vs RF Frequency and Channel at

5898.24 MSPS, Straight Mode

Output Frequency (MHz)

600

750

900

1050

1200

1350

1500

2.5

3.5

4.5

5.5

1TX

2TX

3TX

4TX

Including PCB and cable losses, Aout = -0.5 dFBS, DSA = 0,

0.8 GHz matching

Figure 7-304. TX Full Scale vs RF Frequency and Channel at

8847.36 MSPS, Straight Mode

Output Frequency (MHz)

600

750

900

1050

1200

1350

1500

2.5

3.5

4.5

5.5

6.5

1TX

2TX

3TX

4TX

Including PCB and cable losses, Aout = -0.5 dFBS, DSA = 0,

0.8 GHz matching

Figure 7-305. TX Full Scale vs RF Frequency and Channel at

5898.24 MSPS, Interleave Mode

Output Frequency (MHz)

600

750

900

1050

1200

1350

1500

2.5

3.5

4.5

5.5

6.5

1TX

2TX

3TX

4TX

Including PCB and cable losses, Aout = -0.5 dFBS, DSA = 0,

0.8 GHz matching

Figure 7-306. TX Full Scale vs RF Frequency and Channel at

8847.36 MSPS, Interleave Mode

Output Frequency (MHz)

600

750

900

1050

1200

1350

1500

2.5

3.5

4.5

5.5

6.5

1TX

2TX

3TX

4TX

Including PCB and cable losses, Aout = -0.5 dFBS, DSA = 0,

0.8 GHz matching

Figure 7-307. TX Full Scale vs RF Frequency and Channel at

11796.48 MSPS, Interleave Mode

Output Frequency (MHz)

600

750

900

1050

1200

1350

1500

-2

-1

fDAC=5898.24MSPS, straight mode

fDAC=5898.24MSPS, interleave mode

fDAC=8847.36MSPS, straight mode

fDAC=8847.36MSPS, interleave mode

fDAC=11796.48MSPS, straight mode

fDAC=11796.48MSPS, interleave mode

including PCB and cable losses, Aout = -0.5 dFBS, DSA = 0,

0.8 GHz matching

Figure 7-308. TX Output Fullscale vs Output Frequency

AFE7901

SBASAO5 – APRIL 2023

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