AD9251-40 查看數據表（PDF） - Analog Devices

零件编号

产品描述 (功能)

比赛名单

AD9251-40

14-Bit, 20 MSPS/40 MSPS/65 MSPS/80 MSPS, 1.8 V Dual Analog-to-Digital Converter

Analog Devices 

Data Sheet

AD9251

AC SPECIFICATIONS

AVDD = 1.8 V; DRVDD = 1.8 V, maximum sample rate, 2 V p-p differential input, 1.0 V internal reference; AIN = −1.0 dBFS,

DCS disabled, unless otherwise noted.

Table 2.

Parameter1

SIGNAL-TO-NOISE RATIO (SNR)

fIN = 9.7 MHz

fIN = 30.5 MHz

fIN = 70 MHz

fIN = 200 MHz

SIGNAL-TO-NOISE-AND-DISTORTION (SINAD)

fIN = 9.7 MHz

fIN = 30.5 MHz

fIN = 70 MHz

fIN = 200 MHz

EFFECTIVE NUMBER OF BITS (ENOB)

fIN = 9.7 MHz

fIN = 30.5 MHz

fIN = 70 MHz

fIN = 200 MHz

WORST SECOND OR THIRD HARMONIC

fIN = 9.7 MHz

fIN = 30.5 MHz

fIN = 70 MHz

fIN = 200 MHz

SPURIOUS-FREE DYNAMIC RANGE (SFDR)

fIN = 9.7 MHz

fIN = 30.5 MHz

fIN = 70 MHz

fIN = 200 MHz

WORST OTHER (HARMONIC OR SPUR)

fIN = 9.7 MHz

fIN = 30.5 MHz

fIN = 70 MHz

fIN = 200 MHz

TWO-TONE SFDR

fIN = 30.5 MHz (−7 dBFS), 32.5 MHz (−7 dBFS)

CROSSTALK2

ANALOG INPUT BANDWIDTH

AD9251-20/AD9251-40

AD9251-65

AD9251-80

Temp Min Typ

Max Min Typ Max Min Typ Max Unit

25°C

74.7

25°C

74.4

Full 73.6

25°C

73.7

Full

25°C

71.5

74.5

74.3

73.6

73.7

71.5

74.3

74.1

73.6

72.5

71.5

dBFS

dBFS

dBFS

dBFS

dBFS

dBFS

25°C

74.6

25°C

74.3

Full 73.4

25°C

73.6

Full

25°C

70.0

74.4

74.2

73.4

73.6

70.0

74.1

74.0

73.5

72.4

70.0

dBFS

dBFS

dBFS

dBFS

dBFS

dBFS

25°C

12.0

25°C

12.0

25°C

11.9

25°C

11.3

12.0

12.0

Bits

12.0

12.0

Bits

11.9

11.9

Bits

11.3

11.3

Bits

25°C

−95

−95

−93

dBc

25°C

−95

−95

−93

dBc

Full

−81

−81

dBc

25°C

−94

−94

−92

dBc

Full

−81 dBc

25°C

−80

−80

−80

dBc

25°C

95

25°C

94

Full 81

25°C

93

Full

25°C

80

95

93

dBc

94

93

dBc

81

dBc

93

92

dBc

81

dBc

80

80

dBc

25°C

−98

−98

−97

dBc

25°C

−98

−98

−97

dBc

Full

−90

−90

dBc

25°C

−98

−98

−96

dBc

Full

−89 dBc

25°C

−95

−95

−95

dBc

25°C

90

Full

−110

25°C

700

90

−110

700

90

dBc

−110

dBc

700

MHz

1 See the AN-835 Application Note, Understanding High Speed ADC Testing and Evaluation, for a complete set of definitions.

2 Crosstalk is measured at 100 MHz with −1.0 dBFS on one channel and no input on the alternate channel.

Rev. B | Page 5 of 36

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