MAX1106 datasheet(9/16 Pages) MAXIM

9 / 16 page

Single-Supply, Low-Power,

Serial 8-Bit ADCs

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0.5

-0.5

300

INTEGRAL NONLINEARITY

vs. DIGITAL CODE

-0.1

-0.3

-0.4

-0.2

0.4

0.3

DIGITAL CODE

100

150

200

250

0.1

0.2

-100

014

FFT PLOT

-60

-80

FREQUENCY (kHz)

-20

-40

fIN+ = 10.34kHz, 2Vp-p

fSAMPLE = 25088Hz

21.5

18.5

CONVERSION TIME vs. SUPPLY VOLTAGE

19.5

19.0

21.0

SUPPLY VOLTAGE (V)

20.5

20.0

Typical Operating Characteristics (continued)

(VDD = +3.0V (MAX1106), VDD = +5.0V (MAX1107); fSCLK = 2MHz; 25ksps conversion rate; external reference; 1µF at REFOUT;

TA = +25°C; unless otherwise noted.)

Pin Description

Positive Analog Input. Sampled. Input range from GND to VDD.

IN+

Ground.

GND

Negative Analog Input. Input range from GND to VDD.

IN-

Reference Voltage Input. Reference voltage for analog-to-digital conversion. Connect REFOUT to REFIN

for internal reference. Input range from 1V to VDD.

REFIN

Active-Low Shutdown. Connect to VDD for normal operation.

SHDN

Conversion Start Input. Toggle CONVST high for 1µs minimum and then low to start internal conversion.

Data is not clocked out unless CONVST is low.

CONVST

Internal Reference Output. Bypass with 1µF to ground. 2.048V for MAX1106, 4.096V for MAX1107.

REFOUT

Serial Data Output. Data is clocked out on the falling edge of SCLK. DOUT is high impedance in shutdown

or after all data is clocked out.

DOUT

Positive Supply Voltage

VDD

FUNCTION

NAME

-40

100

CONVERSION TIME vs. TEMPERATURE

TEMPERATURE (°C)

-20

VDD = 3V

VDD = 5V

1.0010

0.9980

-40

100

NORMALIZED REFERENCE VOLTAGE

vs. TEMPERATURE

0.9990

0.9985

1.0005

TEMPERATURE (°C)

-20

1.0000

0.9995

Serial Clock Input. Clocks data out of serial interface.

SCLK

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