MAX1106 datasheet(7/16 Pages) MAXIM

7 / 16 page

Single-Supply, Low-Power,

Serial 8-Bit ADCs

_______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS—MAX1107 (continued)

(VDD = +4.5V to +5.5V; IN- = GND; fSCLK = 2MHz; 25ksps conversion rate; 1µF capacitor at REFOUT; external +4.096V reference at

REFIN; TA = TMIN to TMAX; unless otherwise noted. Typical values are at TA = +25°C.)

CONDITIONS

External reference

Figure 2, CLOAD = 100pF

Internal reference (Note 9)

µs

240

tSHDN

SHDN Fall to Output Disable

tWAKE

Wake-Up Time

Figure 2, CLOAD = 100pF

240

tTR

SCLK Low to Output Disable

200

tCL

SCLK Pulse Width Low

100

tSCC

SCLK Low to CONVST Rise

UNITS

MIN

TYP

MAX

SYMBOL

PARAMETER

Note 1: Relative accuracy is the deviation of the analog value at any code from its theoretical value after the full-scale range has

been calibrated.

Note 2: See

Typical Operating Characteristics.

Note 3: VREFOUT = +2.048V (MAX1106), VREFOUT = +4.096V (MAX1107), offset nulled.

Note 4: Common-mode range (IN+, IN-) GND to VDD.

Note 5: REFOUT supplies typically 2.5mA under normal operating conditions.

Note 6: External load should not change during the conversion for specified accuracy.

Note 7: Power consumption with CMOS levels.

Note 8: Measured as

 VFS(2.7V) - VFS(3.6V) for MAX1106, and measured as  VFS(4.5V) - VFS(5.5V) for MAX1107.

Note 9: 1µF at REFOUT, internal reference settling to 0.5LSB.

Typical Operating Characteristics

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

TA = +25°C; unless otherwise noted.)

200

2.5

5.5

SUPPLY CURRENT vs. SUPPLY VOLTAGE

175

SUPPLY VOLTAGE (V)

3.0

3.5

4.0

4.5

5.0

150

125

100

CLOAD = 10pF

DOUT = 10101010

CLOAD = 10pF

DOUT = 11111111

CLOAD = 47pF

DOUT = 10101010

MAX1106 (VDD = 2.7V TO 5.5V)

MAX1107 (VDD = 4.5V TO 5.5V)

INTERNAL REFERENCE

200

-40

100

SUPPLY CURRENT vs. TEMPERATURE

175

TEMPERATURE (°C)

-20

406080

150

125

100

DOUT = 10101010

CLOAD = 10pF

INTERNAL REFERENCE

MAX1107, VDD = 5.0V

MAX1106, VDD = 3.0V

0.50

2.5

5.5

SHUTDOWN SUPPLY CURRENT

vs. SUPPLY VOLTAGE

0.10

0.05

0.45

0.40

SUPPLY VOLTAGE (V)

3.0

3.5

4.0

4.5

5.0

0.35

0.30

0.25

0.20

0.15

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