R34DS0012EU0504 Rev.5.04

Page 18

Sep 18, 2025

ISL73141SEH Datasheet

Figure 36. 32k FFT - 105.3kHz

Figure 37. 32k FFT - 455.3kHz

Figure 38. SNR and SINAD vs AVCC

Figure 39. ENOB vs AVCC

Figure 40. THD and SFDR vs AVCC

Figure 41. SNR and SINAD vs Frequency

Unless otherwise noted, AVCC = 3.3V; DVCC = 2.5V; fIN = 105.3kHz; fSAMP = 750ksps; TA = +25°C (Cont.)

-160

-140

-120

-100

-80

-60

-40

-20

0

0

75

150

225

300

375

Frequency (Hz)

AIN = -1dBFS

SNR = 80.3.dBFS

SINAD = 80.1dBFS

SFDR = 108dBFS

THD = 92dBFS

-160

-140

-120

-100

-80

-60

-40

-20

0

0

75

150

225

300

375

Frequency (Hz)

AIN = -1dBFS

SNR = 80.1.dBFS

SINAD = 79.3dBFS

SFDR = 99dBFS

THD = 87dBFS

79.0

79.5

80.0

80.5

81.0

3.0

3.1

3.2

3.3

3.4

3.5

3.6

AVCC (V)

SNR

SINAD

12.5

12.6

12.7

12.8

12.9

13.0

3.0

3.2

3.4

3.6

AVCC (V)

85

90

95

100

105

110

115

3.0

3.1

3.2

3.3

3.4

3.5

3.6

AVCC (V)

THD

SFDR