LTC2159_15 datasheet(11/32 Pages) LINER

Part #	LTC2159

Description	16-Bit, 20Msps Low Power ADC

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Manufacturer	LINER [Linear Technology]

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LTC2159

11

2159f

Typical perForMance characTerisTics

SNR vs Input Frequency, –1dBFS,

20Msps, 2V Range

2nd, 3rd Harmonic vs Input

Frequency, –1dBFS, 20Msps,

2V Range

2nd, 3rd Harmonic vs Input

Frequency, –1dBFS, 20Msps,

1V Range

SFDR vs Input Level,

fIN = 70MHz, 20Msps, 2V Range

IVDD vs Sample Rate, 5MHz,

–1dBFS Wine Wave Input

IOVDD vs Sample Rate, 5MHz,

–1dBFS Sine Wave Input

SNR vs SENSE,

fIN = 5MHz, –1dBFS

INPUT FREQUENCY (MHz)

0

72

71

70

78

77

76

75

74

73

50

100

150

200

250

300

2159 G04

SINGLE-ENDED

ENCODE

DIFFERENTIAL

ENCODE

0

50

100

150

200

250

300

INPUT FREQUENCY (MHz)

90

85

80

75

70

65

100

95

2159 G05

2ND

3RD

0

50

100

150

200

250

300

INPUT FREQUENCY (MHz)

90

85

80

75

70

65

100

95

2159 G06

2ND

3RD

INPUT LEVEL (dBFS)

–80

60

50

40

30

20

80

70

90

100

130

120

110

–70 –60 –50 –40 –30 –20 –10

0

2159 G07

dBFS

dBc

SAMPLE RATE (Msps)

0

21

17

25

29

4

8

12

16

20

2159 G08

CMOS OUTPUTS

3.5mA LVDS

OUTPUTS

SAMPLE RATE (Msps)

0

10

0

20

30

40

50

4

8

12

16

20

2159 G09

1.8V CMOS

1.75mA LVDS

3.5mA LVDS

1.2V CMOS

SENSE PIN (V)

0.6

71

70

72

73

78

77

76

75

74

0.7

0.8

0.9

1.1

1.2

1.3

1

2159 G10

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