ADC14X250 datasheet(10/69 Pages) TI1

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ADC14X250

SLASE49 – DECEMBER 2015

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(1)

Power values indicate consumption during normal conversion assuming an established JESD204 link.

(2)

The power limit applies to an ambient temperature and board thermal pad temperature of 25°C.

6.7 Electrical Characteristics: Power Supply

Unless otherwise noted, these specifications apply for VA3.0 = 3 V; VA1.8 = 1.8 V; VA1.2 = 1.2 V; FCLKIN = FS = 250 MSPS.

Typical values are at TA = 25°C, unless otherwise noted. Limit values specified for the temperature range TA-MIN = –40°C to TP-

MAX = 105°C.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

VA3.0

3.0V analog voltage supply

2.85

3.0

3.45

VA1.8

1.8V analog voltage supply

1.7

1.8

1.9

VA1.2

1.2V analog voltage supply

1.15

1.2

1.25

IA3.0

VA3.0 supply current consumption

IA1.8

VA1.8 supply current consumption

112

IA1.2

VA1.2 supply current consumption

Total power

consumption of the

VA3.0 , VA1.8 , VA1.2

supplies(1)

Normal operation(2)

584

600

Power consumption during power-down state, external clock

active

Power consumption during sleep state, external clock active

VBP2.5

BP2.5 bias voltage

Do not load the BP2.5 pin

2.65

Supply sensitivity to noise

Power of spectral spur resulting from a 100-mV sinusoidal signal modulating a supply

at 500 kHz. Analog input is a –3 dBFS 150-MHz single tone. In all cases, the spur

appears as part of a pair symmetric about the fundamental that scales proportionally

with the fundamental amplitude.

dBFS

VA3.0

–72.5

VA1.8

–58.0

VA1.2

–37.7

(1)

This parameter is verified by design.

6.8 Electrical Characteristics: Analog Interface

Unless otherwise noted, these specifications apply for VA3.0 = 3 V; VA1.8 = 1.8 V; VA1.2 = 1.2 V; FCLKIN = FS = 250 MSPS;

external differential resistive termination at ADC input is 66

Ω. Typical values are at TA = 25°C. Limit values specified for the

temperature range TA-MIN = –40°C to TP-MAX = 105°C.

PARAMETER

TEST CONDIONS

MIN

TYP

MAX

UNIT

VCM

Input common mode voltage reference voltage at the VCM pin

Varies with temperature

1.6

IVCM

Input common mode voltage reference current sourcing or sinking on VCMA or

VCMB pins.(1)

VCM-OFF

Input common mode voltage offset range

Allowable difference between the common mode applied to the analog input and

the bias voltage at the VCM bias pin.

RIN

Input termination resistance

Differential

200

CIN

Input capacitance, differential

3.7

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