LTC1749 datasheet(5/20 Pages) LINER

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LTC1749

1749f

Note 1: Absolute Maximum Ratings are those values beyond which the life

of a device may be impaired.

Note 2: All voltage values are with respect to GND (unless otherwise

noted).

Note 3: When these pin voltages are taken below GND or above VDD, they

will be clamped by internal diodes. This product can handle input currents

of greater than 100mA below GND or above VDD without latchup.

Note 4: When these pin voltages are taken below GND, they will be

clamped by internal diodes. This product can handle input currents of

>100mA below GND without latchup. These pins are not clamped to VDD.

Note 5: VDD = 5V, fSAMPLE = 80MHz, differential ENC/ENC = 2VP-P 80MHz

sine wave, input range =

±1.125V differential, unless otherwise specified.

Note 6: Integral nonlinearity is defined as the deviation of a code from a

straight line passing through the actual endpoints of the transfer curve.

The deviation is measured from the center of the quantization band.

Note 7: Bipolar offset is the offset voltage measured from – 0.5 LSB

when the output code flickers between 0000 0000 0000 and

1111 1111 1111.

Note 8: Guaranteed by design, not subject to test.

Note 9: Recommended operating conditions.

ELECTRICAL CHARACTERISTICS

TYPICAL PERFOR A CE CHARACTERISTICS

INL

OUTPUT CODE

–1.0

–0.8

–0.4

–0.2

1.0

0.4

1024

2048

1749 G01

–0.6

0.6

0.8

0.2

3072

4096

OUTPUT CODE

–1.0

–0.8

–0.4

–0.2

1.0

0.4

1024

2048

1749 G02

–0.6

0.6

0.8

0.2

3072

4096

FREQUENCY (MHz)

–60

–30

–20

1749 G03

–70

–80

–120

–100

–10

–40

–50

–90

–110

DNL

8192 Point FFT, fIN = 15MHz,

–1dB, PGA = 0

8192 Point FFT, fIN = 30.2MHz,

–1dB, PGA = 0

8192 Point FFT, fIN = 15MHz,

–20dB, PGA = 0

8192 Point FFT, fIN = 15MHz,

–10dB, PGA = 0

FREQUENCY (MHz)

–60

–30

–20

1749 G04

–70

–80

–120

–100

–10

–40

–50

–90

–110

FREQUENCY (MHz)

–60

–30

–20

1749 G05

–70

–80

–120

–100

–10

–40

–50

–90

–110

FREQUENCY (MHz)

–60

–30

–20

1749 G06

–70

–80

–120

–100

–10

–40

–50

–90

–110

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