ADS7842

SBAS103C

5

www.ti.com

TYPICAL CHARACTERISTICS: +5V

At TA = +25°C, +VCC = +5V, VREF = +5V, fSAMPLE = 200kHz, and fCLK = 16 • fSAMPLE = 3.2MHz, unless otherwise noted.

0

–20

–40

–60

–80

–100

–120

FREQUENCY SPECTRUM

(4096 Point FFT; f

IN = 1,123Hz, –0.2dB)

0

100

25

75

50

Frequency (kHz)

0

–20

–40

–60

–80

–100

–120

FREQUENCY SPECTRUM

(4096 Point FFT; f

IN = 10.3kHz, –0.2dB)

0

100

25

75

50

Frequency (kHz)

SIGNAL-TO-NOISE RATIO AND SIGNAL-TO-

(NOISE + DISTORTION) vs INPUT FREQUENCY

10

1

100

Input Frequency (kHz)

74

73

72

71

70

69

68

SINAD

SNR

SPURIOUS-FREE DYNAMIC RANGE AND TOTAL

HARMONIC DISTORTION vs INPUT FREQUENCY

10

1100

Input Frequency (kHz)

85

80

75

70

65

–85

–80

–75

–70

–65

THD

SFDR

12.0

11.8

11.6

11.4

11.2

11.0

EFFECTIVE NUMBER OF BITS

vs INPUT FREQUENCY

10

1

100

Input Frequency (kHz)

CHANGE IN SIGNAL-TO-(NOISE + DISTORTION)

vs TEMPERATURE

–20

–40

100

Temperature (

°C)

0.4

0.2

0.0

–0.2

–0.4

–0.6

0.6

0

20

40

60

80

f

IN = 10kHz, –0.2dB