ADS61B29 datasheet(7/61 Pages) TI

Part #	ADS61B29

Description	14-/12-Bit, 250-MSPS ADCs With Integrated Analog Buffer

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Manufacturer	TI [Texas Instruments]

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ELECTRICAL CHARACTERISTICS – ADS61B49 and ADS61B29

ADS61B29

ADS61B49

www.ti.com ......................................................................................................................................... SLWS214A – OCTOBER 2008 – REVISED DECEMBER 2008

Typical values are at 25°C, AVDD = 3.3 V, DRVDD = 1.8 V, 50% clock duty cycle, –1 dBFS differential analog input, internal

reference mode unless otherwise noted.

Min and max values are across the full temperature range TMIN = –40°C to TMAX = 85°C, AVDD = 3.3 V, DRVDD = 1.8 V

ADS61B49

ADS61B29

250 MSPS

PARAMETER

UNIT

MIN

TYP

MAX

MIN

TYP

MAX

Fin = 20 MHz

72.3

70.1

Fin = 80 MHz

72

69.8

SNR

Fin = 100 MHz

71.6

69.6

dBFS

Signal-to-noise ratio, LVDS

Fin = 170 MHz

68.5

70.7

66.5

69

Fin = 300 MHz

69

67.8

Fin = 20 MHz

72.5

70.3

Fin = 80 MHz

71.8

69.7

SINAD

Fin = 100 MHz

71.6

69.5

dBFS

Signal-to-noise and distortion ratio, LVDS

Fin = 170 MHz

67.5

70

65.7

68.4

Fin = 300 MHz

67.1

66.3

ENOB

Fin = 170 MHz (using SINAD in dBFS)

11.3

11.1

LSB

Effective number of bits

DNL

-0.95

±0.4

1

-0.5

±0.2

1

LSB

Differential non-linearity

INL

-5

±2

5

-2.5

±1

2.5

LSB

Integrated non-linearity

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