AD9218 datasheet(17/29 Pages) AD

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AD9218

Rev. C | Page 16 of 28

ENCODE POSITIVE PULSEWIDTH (ns)

SFDR

SINAD

ENCODE POSITIVE PULSEWIDTH (ns)

SFDR

SINAD

Figure 32. SINAD and SFDR vs. Encode Pulse Width High, AIN = –0.5 dBFS

Single-Ended, 1 V p-p Analog Input Range 105 MSPS

Figure 35. SINAD and SFDR vs. Encode Pulse Width High, AIN = –0.5 dBFS

Single-Ended, 1 V p-p Analog Input Range 65 MSPS

100

120

140

160

180

200

100

120

140

ENCODE CLOCK RATE (MSPS)

IVD – 105

IVD – 65

–65/–105 IVDD

2.0

2.5

3.0

3.5

4.0

4.5

020

–40

–20

TEMPERATURE (°C)

GAIN –105

GAIN –65

Figure 36. Gain Error vs. Temperature, A

Figure 33. IVD and IVDD vs. Encode Rate (AIN = 10.3 MHz, @ –0.5 dBFS),

–65 MSPS/–105 MSPS Grade CI = 5 pF

= 10.3 MHz, –65 MSPS Grade,

–105 MSPS Grade, 1 V p-p

020

–40

–20

TEMPERATURE (°C)

SFDR –65

SFDR –105

SNR –65

SNR –105

SINAD –65

SINAD –105

1.119

1.121

1.123

1.125

1.127

1.129

1.131

020

–40

–20

TEMPERATURE (°C)

Figure 37. SNR, SINAD, SFDR vs. Temperature, A

Figure 34. VREF Output Voltage vs. Temperature (ILOAD = 300 μA)

= 10.3 MHz,

–65 MSPS Grade, –105 MSPS Grade, 1 V p-p

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