MAX1124 datasheet(2/21 Pages) MAXIM

2 / 21 page

1.8V, Low-Power, 12-Bit, 250Msps

ADC for Broadband Applications

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ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(AVCC = OVCC = 1.8V, AGND = OGND = 0, fSAMPLE = 250MHz, differential clock input drive, 0.1µF capacitor on REFIO, internal ref-

erence, digital output pins differential RL = 100Ω. Limits are for TA = -40°C to +85°C, unless otherwise noted. Typical values are at

TA = +25°C.) (Note 1)

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional

operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to

absolute maximum rating conditions for extended periods may affect device reliability.

AVCC to AGND ......................................................-0.3V to +2.1V

OVCC to OGND .....................................................-0.3V to +2.1V

AVCC to OVCC .......................................................-0.3V to +2.1V

AGND to OGND ....................................................-0.3V to +0.3V

Analog Inputs to AGND ...........................-0.3V to (AVCC + 0.3V)

All Digital Inputs to AGND........................-0.3V to (AVCC + 0.3V)

REFIO, REFADJ to AGND ........................-0.3V to (AVCC + 0.3V)

All Digital Outputs to OGND ....................-0.3V to (OVCC + 0.3V)

ESD on All Pins (Human Body Model).............................±2000V

Current into Any Pin..........................................................±50mA

Continuous Power Dissipation (TA = +70°C, multilayer board)

68-Pin QFN-EP (derate 41.7mW/°C above +70°C)....3333mW

Operating Temperature Range ...........................-40°C to +85°C

Junction Temperature .....................................................+150°C

Storage Temperature Range ............................-60°C to +150°C

Lead Temperature (soldering,10s) ..................................+300°C

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

DC ACCURACY

Resolution

Bits

Integral Nonlinearity (Note 2)

INL

fIN = 10MHz

-3

±0.8

LSB

Differential Nonlinearity (Note 2)

DNL

No missing codes

-1.0

±0.4

+1.3

LSB

Transfer Curve Offset

VOS

(Note 2)

-3.5

+3.5

Offset Temperature Drift

±20

µV/

°C

ANALOG INPUTS (INP, INN)

Full-Scale Input Voltage Range

VFS

1250

1385

mVP-P

Full-Scale Range Temperature

Drift

±60

ppm/

°C

Common-Mode Input Voltage

VCM

Internally self-biased

0.7

Differential Input Capacitance

CIN

2.5

Differential Input Resistance

RIN

1.8

Ω

Full-Power Analog Bandwidth

FPBW

700

MHz

REFERENCE (REFIO, REFADJ)

Reference Output Voltage

VREFIO

REFADJ = AGND

1.18

1.25

1.30

Reference Temperature Drift

ppm/

°C

REFADJ Input High Voltage

VREFADJ

Used to disable the internal reference

AVCC - 0.3

SAMPLING CHARACTERISTICS

Maximum Sampling Rate

fSAMPLE

250

MHz

Minimum Sampling Rate

fSAMPLE

MHz

Clock Duty Cycle

Set by clock-management circuit

40 to 60

Aperture Delay

tAD

Figures 5, 11

620

Aperture Jitter

tAJ

Figure 11

0.15

psRMS

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