MAX125CEAX 参数 Datasheet PDF下载

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

Serial 10-Bit ADCs in QSOP-16

MAX1248/MAX1249

ELECTRICAL CHARACTERISTICS (continued)

(V

DD

= +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

A

= T

MIN

to T

MAX

,

unless otherwise noted.)

PARAMETER

SHDN

Voltage, Floating

SHDN

Maximum Allowed

Leakage, Mid Input

DIGITAL OUTPUTS

(DOUT, SSTRB)

Output Voltage Low

Output Voltage High

Three-State Leakage Current

Three-State Output Capacitance

POWER REQUIREMENTS

Positive Supply Voltage

V

OL

V

OH

I

L

C

OUT

V

DD

Operating mode,

full-scale input (Note 11)

Positive Supply Current

I

DD

Full power-down

I

DD

Supply Rejection (Note 12)

PSR

V

DD

= 5.25V

V

DD

= 3.6V

V

DD

= 5.25V

V

DD

= 3.6V

I

SINK

= 5mA

I

SINK

= 16mA

I

SOURCE

= 0.5mA

CS

= V

DD

CS

= V

DD

(Note 10)

2.70

1.6

1.2

3.5

1.2

30

±0.3

V

DD

- 0.5

±0.01

±10

15

5.25

3.0

2.0

15

10

70

mV

µA

0.4

0.8

V

V

µA

pF

V

mA

SYMBOL

V

FLT

SHDN

= FLOAT

SHDN

= FLOAT

CONDITIONS

MIN

TYP

V

DD

/ 2

±100

MAX

UNITS

V

nA

Fast power-down (MAX1248) V

DD

= 5.25V

V

DD

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

external reference = 2.500V

4

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