ADS6445 datasheet(40/75 Pages) STMICROELECTRONICS

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0.5

1.0

1.5

2.0

2.5

3.0

Input Clock Amplitude − VPP

G049

SNR

SFDR

fIN = 50.1 MHz

Input Clock Duty Cycle − %

G050

SNR

SFDR

fIN = 20.1 MHz

fS − Sampling Frequency − MSPS

0.0

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1.8

2.0

G051

LVDD

AVDD

Output Code

8180 8181 8182 8183 8184 8185 8186 8187 8188 8189

G052

RMS LSB = 1.016

VVCM − VCM Voltage − V

1.30

1.35

1.40

1.45

1.50

1.55

1.60

1.65

1.70

fIN = 50.1 MHz

External Reference Mode

G053

SNR

SFDR

f − Frequency − MHz

−100

−90

−80

−70

−60

−50

−40

−30

−20

−10

100

150

200

250

300

G018

ADS6445, ADS6444

ADS6443, ADS6442

SLAS531 – MAY 2007

ADS6443 (F

srated = 80 MSPS) (continued)

PERFORMANCE vs CLOCK AMPLITUDE (differential)

PERFORMANCE vs CLOCK DUTY CYCLE

Figure 54.

Figure 55.

OUTPUT NOISE HISTOGRAM WITH

POWER DISSIPATION vs SAMPLING FREQUENCY

INPUTS TIED TO COMMON-MODE

Figure 56.

Figure 57.

PERFORMANCE IN EXTERNAL REFERENCE MODE

CMRR vs FREQUENCY

Figure 58.

Figure 59.

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