ADS8324

4

SBAS172A

www.ti.com

TYPICAL CHARACTERISTICS

At TA = +25°C, VCC = 1.8V, VREF = 0.9V, fSAMPLE = 50kHz, fCLK = 24 • fSAMPLE, unless otherwise specified.

FREQUENCY SPECTRUM

(4096 point FFT, fIN = 0.989kHz, –0.2dB)

0

–20

–40

–60

–80

–100

–120

–140

025

20

15

10

5

Frequency (kHz)

FREQUENCY SPECTRUM

(4096 point FFT, fIN = 9.998kHz, –0.2dB)

0

–20

–40

–60

–80

–100

–120

–140

025

20

15

10

5

Frequency (kHz)

FREQUENCY SPECTRUM

(4096 point FFT, fIN = 20.001kHz, –0.2dB)

0

–20

–40

–60

–80

–100

–120

–140

025

20

15

10

5

Frequency (kHz)

SIGNAL-TO-NOISE RATIO AND

SIGNAL-TO-(NOISE + DISTORTION)

vs INPUT FREQUENCY

90

85

80

75

70

65

60

1100

10

SNR

SINAD

Frequency (kHz)

SIGNAL-TO-NOISE RATIO AND

TOTAL HARMONIC DISTORTION

vs INPUT FREQUENCY

100

95

90

85

80

75

70

65

60

–100

–95

–90

–85

–80

–75

–70

–65

–60

1100

10

Frequency (kHz)

SFDR

THD(1)

NOTE: (1) First nine harmonics

of the input frequency.

COMMON-MODE REJECTION vs FREQUENCY

80

75

70

65

60

55

50

45

40

100

1M

10k

100k

1k

Frequency (kHz)

VCM = 400mVp-p sinewave centered around VREF