ADUM7703 datasheet(11/22 Pages) AD

11 / 22 page

Data Sheet

ADuM7703

Rev. 0 | Page 11 of 22

TYPICAL PERFORMANCE CHARACTERISTICS

TA = 25°C, VDD1 = 5 V, VDD2 = 5 V, VIN+ = −250 mV to +250 mV, VIN− = 0 V, and fMCLKIN = 20 MHz, using a sinc3 filter with a

256 oversampling ratio (OSR), unless otherwise noted.

–140

–120

–100

–80

–60

–40

–20

200

400

600

800

1000

SUPPLY RIPPLE FREQUENCY (kHz)

Figure 7. Power Supply Rejection Ratio (PSRR) vs. Supply Ripple Frequency

–140

–120

–100

–80

–60

–40

–20

0.1

100

1000

COMMON-MODE RIPPLE FREQUENCY (kHz)

SHORTED VIN± INPUTS

200mV p-p SINE WAVE ON INPUTS

MCLKIN = 10MHz, SINC3 OSR = 256

MCLKIN = 20MHz, SINC3 OSR = 256

Figure 8. Common-Mode Rejection Ratio (CMRR) vs. Common-Mode

Ripple Frequency

0.1

ANALOG INPUT FREQUENCY (KHz)

SINAD 10 MHz MCLKIN

SINAD 20 MHz MCLKIN

Figure 9. SINAD vs. Analog Input Frequency

–160

–140

–120

–100

–80

–60

–40

–20

FREQUENCY (kHz)

fIN = 1kHz

SNR = 86.6dB

SINAD = 86.2dB

THD = –96.5dB

Figure 10. Typical Fast Fourier Transform (FFT) (fIN is the Input Frequency)

–1.0

–0.8

–0.6

–0.4

0.4

–0.2

0.2

0.6

0.8

1.0

405060

CODE (In Thousands)

Figure 11. Typical DNL Error

–2.0

–1.5

–1.0

–0.5

1.0

0.5

1.5

2.0

3040

5060

CODE (In Thousands)

Figure 12. Typical INL Error

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