LTC6652 datasheet(8/50 Pages) LINER

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LTC2373-18

237318f

For more information www.linear.com/LTC2373-18

Typical perForMance characTerisTics

SNR, SINAD vs Input Level,

fIN = 1kHz

Differential Nonlinearity

vs Output Code

DC Histogram (Near Full-Scale)

32k Point FFT fSMPL = 1Msps,

fIN = 1kHz

32k Point FFT fSMPL = 1Msps,

fIN = 1kHz, REFBUF = 5V

SNR, SINAD vs REFBUF, fIN = 1kHz

THD, Harmonics vs REFBUF,

fIN = 1kHz

Integral Nonlinearity

vs Output Code

DC Histogram (Zero-Scale)

TA = 25°C, VDD = 5V, OVDD = 2.5V, REFIN = 2.048V,

Fully Differential Range, VCM = 2.048V, fSMPL = 1Msps, unless otherwise noted.

OUTPUT CODE

–2.0

1.5

1.0

–1.5

–1.0

–0.5

0.5

2.0

237318 G01

65536

131072

196608

262144

OUTPUT CODE

–1.0

0.8

0.6

–0.8

–0.6

–0.4

–0.2

0.4

0.2

1.0

237318 G02

65536

131072

196608

262144

CODE

100000

60000

20000

40000

80000

140000

120000

σ = 0.85

237318 G03

–4

–3

–2

–1

CODE

100000

60000

20000

40000

80000

120000

σ = 1.00

237318 G04

131052

131060

131054

131058

131056

FREQUENCY (kHz)

–20

237318 G05

–180

–100

–140

–160

–120

–80

–60

–40

100

200

300

400

500

SNR = 100.7dB

THD = –114dB

SINAD = 100.5dB

SFDR = 115.3dB

FREQUENCY (kHz)

–20

237318 G06

–180

–100

–140

–160

–120

–80

–60

–40

100

200

300

400

500

SNR = 102.3dB

THD = –111.5dB

SINAD = 101.8dB

SFDR = 111.9dB

REFBUF VOLTAGE (V)

2.5

100

101

102

3.5

237318 G07

4.5

103

SINAD

SNR

REFBUF VOLTAGE (V)

2.5

–125

–130

–115

–110

3.5

237318 G08

–120

4.5

–105

3RD

2ND

THD

INPUT LEVEL (dB)

–40

99.0

–30

237318 G09

100.5

100.0

99.5

–20

–10

101.0

SNR

SINAD

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