MAX1021 datasheet(39/40 Pages) MAXIM

39 / 40 page

10-Bit, Multichannel ADCs/DACs with FIFO,

Temperature Sensing, and GPIO Ports

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Small-Signal Bandwidth

A small -20dBFS analog input signal is applied to an

ADC so the signal’s slew rate does not limit the ADC’s

performance. The input frequency is then swept up to

the point where the amplitude of the digitized conver-

sion result has decreased by -3dB. Note that the T/H

performance is usually the limiting factor for the small-

signal input bandwidth.

Full-Power Bandwidth

A large -0.5dBFS analog input signal is applied to an

ADC, and the input frequency is swept up to the point

where the amplitude of the digitized conversion result

has decreased by -3dB. This point is defined as full-

power input bandwidth frequency.

DAC Digital Feedthrough

DAC digital feedthrough is the amount of noise that

appears on the DAC output when the DAC digital con-

trol lines are toggled.

ADC Power-Supply Rejection

ADC power-supply rejection (PSR) is defined as the

shift in offset error when the power supply is moved

from the minimum operating voltage to the maximum

operating voltage.

DAC Power-Supply Rejection

DAC PSR is the amount of change in the converter’s

value at full-scale as the power-supply voltage changes

from its nominal value. PSR assumes the converter’s lin-

earity is unaffected by changes in the power-

supply voltage.

Chip Information

TRANSISTOR COUNT: 58,141

PROCESS: BiCMOS

Pin Configurations

AIN0

REF1

GPIOC0

N.C.

LDAC

OUT7

RES_SEL

GPIOC1

EOC

DVDD

DGND

SCLK

DIN

OUT0

GPIOA0

THIN QFN

MAX1021

TOP VIEW

DOUT

GPIOA1

GPIOA0

GPIOA1

DVDD 4

DGND

DOUT

SCLK

DIN

OUT0

EOC

AIN0

REF1

GPIOC0

N.C.

RES_SEL

D.C.

GPIOC1

10 11 12 13 14 15 16 17 18

36 35 34 33 32 31 30 29 28

LDAC

MAX1043

TOP VIEW

THIN QFN

(6mm x 6mm x 0.8mm)

Package Information

For the latest package outline information, go to

www.maxim-ic.com/packages.

PACKAGE TYPE

PACKAGE CODE

DOCUMENT NO.

36 TQFN

T3666-3

21-0141

MAX1021 Datasheet(PDF) 39 Page - Maxim Integrated Products

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