AD9260(2000) Ver la hoja de datos (PDF) - Analog Devices

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AD9260
(Rev.:2000)

High-Speed Oversampling CMOS ADC with 16-Bit Resolution at a 2.5 MHz Output Word Rate

Analog Devices 

AD9260

DIGITAL FILTER CHARACTERISTICS

Parameter

AD9260

Units

8× DECIMATION (N = 8)

Passband Ripple

Stopband Attenuation

Passband

Stopband

Passband/Transition Band Frequency

(–0.1 dB Point)

(–3.0 dB Point)

Absolute Group Delay1

Group Delay Variation

Settling Time (to ± 0.0007%)1

0.00125

82.5

0

0.605 × (fCLOCK/20 MHz)

1.870 × (fCLOCK/20 MHz)

18.130 × (fCLOCK/20 MHz)

0.807 × (fCLOCK/20 MHz)

1.136 × (fCLOCK/20 MHz)

13.55 × (20 MHz/fCLOCK)

0

24.2 × (20 MHz/fCLOCK)

dB max

dB min

MHz min

MHz max

MHz min

MHz max

MHz max

MHz max

µs max

µs max

µs max

4× DECIMATION (N = 4)

Passband Ripple

Stopband Attenuation

Passband

Stopband

Passband/Transition Band Frequency

(–0.1 dB Point)

(–3.0 dB Point)

Absolute Group Delay1

Group Delay Variation

Settling Time (to ± 0.0007%)1

0.001

82.5

0

1.24 × (fCLOCK/20 MHz)

3.75 × (fCLOCK/20 MHz)

16.25 × (fCLOCK/20 MHz)

1.61 × (fCLOCK/20 MHz)

2.272 × (fCLOCK/20 MHz)

2.90 × (20 MHz/fCLOCK)

0

5.05 × (20 MHz/fCLOCK)

dB max

dB min

MHz min

MHz max

MHz min

MHz max

MHz max

MHz max

µs max

µs max

µs max

2× DECIMATION (N = 2)

Passband Ripple

Stopband Attenuation

Passband

Stopband

Passband/Transition Band Frequency

(–0.1 dB Point)

(–3.0 dB Point)

Absolute Group Delay1

Group Delay Variation

Settling Time (to ± 0.0007%)1

0.0005

85.5

0

2.491 × (fCLOCK/20 MHz)

7.519 × (fCLOCK/20 MHz)

12.481 × (fCLOCK/20 MHz)

3.231 × (fCLOCK/20 MHz)

4.535 × (fCLOCK/20 MHz)

0.80 × (20 MHz/fCLOCK)

0

1.40 × (20 MHz/fCLOCK)

dB max

dB min

MHz min

MHz max

MHz min

MHz max

MHz max

MHz max

µs max

µs max

µs max

1× DECIMATION (N = 1)

Propagation Delay: tPROP

Absolute Group Delay

13

(225 × (20 MHz/fCLOCK)) + tPROP

ns max

ns max

NOTES

1To determine “overall” Absolute Group Delay and/or Settling Time inclusive of delay from the sigma-delta modulator, add Absolute Group Delay and/or Settling

Time pertaining to specific decimation mode to the Absolute Group Delay specified in 1 × decimation.

Specifications subject to change without notice.

REV. B

–5–

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