THS4532_15 Datasheet, PDF (38/58 Pages) Texas Instruments – THS4532 Ultra Low Power, Rail-to-Rail Output, Fully-Differential Amplifier

THS4532
SLOS829A – FEBRUARY 2013 – REVISED JULY 2015
Typical Applications (continued)
9.2.1.3 Application Curve
0
−10
−20
−30
−40
−50
−60
−70
−80
−90
−100
−110
−120
−130
−140
0
V_S = 5 V
G = 1 V/V
R_F = 2 kΩ
V_OUT = −0.5 dBFS
10k
20k
30k
40k
50k
Frequency (Hz)
G078
Figure 88. THS5432 + ADS8321 1-kHz FFT
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CONFIGURATION
THS5432 + ADS8321
ADS8321 Data Sheet (typical)
Table 6. 10-kHz FFT Analysis Summary
TONE
10 kHz
10 kHz
SIGNAL
–0.5 dBFS
–0.5 dBFS
SNR
87 dBc
87 dBc
THD
–96 dBc
–86 dBc
SINAD
87 dBc
84 dBc
9.2.2 Audio ADC Driver Performance: THS5432 and PCM4204 Combined Performance
2 k
SFDR
100 dBc
86 dBc
V_IN±
2 k
From Analyzer
V_IN+
0.22 F
2 k
1 nF
40.2
5V
+
V_OCM
±
1 nF
V_OUT±
THS4532
V_OUT+
40.2
2 k
100 pF
2.7 nF
To Analyzer
PCM4204
100 pF
Figure 89. THS5432 and PCM4204 Test Circuit
38
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