LTC2281IUP-PBF datasheet(7/24 Pages) LINER

Part #	LTC2281IUP-PBF

Description	Dual 10-Bit, 125Msps Low Power 3V ADC

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Manufacturer	LINER [Linear Technology]

Direct Link	http://www.linear.com

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LTC2281

7

2281fb

TYPICAL PERFORMANCE CHARACTERISTICS

SNR vs Input Frequency,

–1dB, 2V Range, 125Msps

SFDR vs Input Frequency,

–1dB, 2V Range, 125Msps

SNR and SFDR vs Sample Rate,

2V Range, fIN = 5MHz, –1dB

SNR vs Input Level,

fIN = 70MHz, 2V Range, 125Msps

SFDR vs Input Level,

fIN = 70MHz, 2V Range, 125Msps

IVDD vs Sample Rate,

5MHz Sine Wave Input, –1dB

IOVDD vs Sample Rate, 5MHz Sine

Wave Input, –1dB, 0VDD = 1.8V

SNR vs SENSE, fIN = 5MHz, –1dB

INPUT FREQUENCY (MHz)

0

55

56

58

59

60

65

62

100

200

250

2281 G10

57

63

64

61

50

150

300

350

INPUT FREQUENCY (MHz)

0

85

90

95

150

250

2281 G11

80

75

50

100

200

300

350

70

65

SAMPLE RATE (Msps)

0

50

60

70

80

90

20

40

60

80

2281 G12

100 120 140 160

SFDR

SNR

INPUT LEVEL (dBFS)

–50

30

40

50

–20

0

2281 G13

20

10

0

–40

–30

dBFS

dBc

–10

60

70

80

INPUT LEVEL (dBFS)

–50

60

80

100

–10

2281 G14

40

20

50

70

90

30

10

0

–40

–30

–20

0

dBFS

dBc

SAMPLE RATE (Msps)

0

260

280

80

2281 G15

240

220

250

270

290

230

210

200

190

20

40

60

100

120

140

2V RANGE

1V RANGE

SAMPLE RATE (Msps)

0

14

60

2281 G16

8

4

20

40

80

2

0

16

12

10

6

100

120

140

SENSE PIN (V)

0.4

61.6

0.7

2281 G17

61.0

60.6

0.5

0.6

0.8

60.4

60.2

61.8

61.4

61.2

60.8

0.9

1

1.1

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