Datasheet

PGA870
SBOS436A –DECEMBER 2009–REVISED FEBRUARY 2011 www.ti.com
Figure 52. FFT Plot of PGA870 (G = 20 dB) + First-Order Bandpass Filter and ADS58C48 with
Single-Tone Input at 170 MHz
Figure 53. FFT Plot of PGA870 (G = –4 dB) + First-Order Bandpass Filter and ADS58C48 with
Single-Tone Input at 170 MHz
Table 5. Analysis of FFT for PGA870 (G = 20 dB) + First-Order Bandpass Filter
and ADS58C48 at 170 MHz vs Typical ADC Specifications
CONFIGURATION ADC INPUT SNR HD
2
HD
3
PGA870 +
First-order
–1 dBFS 63.7 dBFS –83.8 dBc –81.7 dBc
Bandpass Filter
and ADS58C48
ADS58C48 Only
–1 dBFS 66.1 dBFS –82 dBc –80 dBc
(typ)
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