Rainbow-electronics MAX1249 Bedienungsanleitung PDF herunterladen (Seite 4)

= 5.25V

MAX1248/MAX1249

+2.7V to +5.25V, Low-Power, 4-Channel,

Serial 10-Bit ADCs in QSOP-16

4 _______________________________________________________________________________________

1.2 2.0

3.5 15

Operating mode,

full-scale input (Note 11)

30 70Fast power-down (MAX1248)

nA±100

SHDN Maximum Allowed

Leakage, Mid Input

/ 2V

FLT

SHDN Voltage, Floating

SHDN = FLOAT

UNITSMIN TYP MAXSYMBOLPARAMETER

µA

1.2 10

CONDITIONS

Positive Supply Current

1.6 3.0

µA±0.01 ±10I

Three-State Leakage Current

- 0.5V

Output Voltage High

0.8

Output Voltage Low

0.4

V2.70 5.25V

Positive Supply Voltage

pF15C

OUT

Three-State Output Capacitance

Full power-down

CS = V

(Note 10)

CS = V

SOURCE

= 0.5mA

SINK

= 16mA

SINK

= 5mA

ELECTRICAL CHARACTERISTICS (continued)

= +2.7V to +5.25V; COM = 0V; f

SCLK

= 2.0MHz, external clock (50% duty cycle); 15 clocks/conversion cycle (133ksps);

MAX1248—4.7µF capacitor at VREF pin; MAX1249—external reference; VREF = 2.500V applied to VREF pin, T

= T

MIN

to T

MAX

unless otherwise noted.)

mV±0.3PSRSupply Rejection (Note 12)

= 2.7V to 5.25V, full-scale input,

external reference = 2.500V

DIGITAL OUTPUTS (DOUT, SSTRB)

POWER REQUIREMENTS

= 5.25V

= 3.6V

= 5.25V

= 3.6V

1 2 3 4 5 6 7 8 9 ... 23 24

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