Rainbow-electronics MAX1301 Manual do Utilizador descarregar pdf (Página 5)

MAX1300/MAX1301

8-/4-Channel, ±12V Multirange Inputs,

Serial 16-Bit ADCs

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PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Preamplifier Supply Voltage AV

DD2

4.75 5.25

Digital I/O Supply Voltage DV

DDO

2.70 5.25

Internal reference 3 3.5

DD1

Supply Current I

AVDD1

External clock mode,

external acquisition

mode, or internal

clock mode

External reference 2.5 3

Supply Current I

DVDD

External clock mode, external acquisition

mode, or internal clock mode

0.9 2 mA

DD2

Supply Current I

AVDD2

External clock mode, external acquisition

mode, or internal clock mode

17.5

25 mA

DDO

Supply Current

DVDDO

External clock mode, external acquisition

mode, or internal clock mode

0.2 1 mA

Partial power-down mode 1.3 mA

Total Supply Current

Full power-down mode 1 µA

Power-Supply Rejection Ratio PSRR All analog input ranges

±0.5

LSB

TIMING CHARACTERISTICS (Figures 15 and 16)

External clock mode

272

External acquisition mode

228

SCLK Period t

Internal clock mode

100

µs

External clock mode

109

External acquisition mode 92

SCLK High Pulse Width (Note 6)

Internal clock mode 40

External clock mode

109

External acquisition mode 92

SCLK Low Pulse Width (Note 6) t

Internal clock mode 40

DIN to SCLK Setup t

40 ns

DIN to SCLK Hold t

0ns

SCLK Fall to DOUT Valid t

40 ns

CS Fall to DOUT Enable t

40 ns

ELECTRICAL CHARACTERISTICS (continued)

(AV

DD1

= AV

DD2

= DV

DDO

= 5V, AGND1 = DGND = DGNDO = AGND2 = AGND3 = 0, f

CLK

= 3.5MHz (50% duty cycle),

external clock mode, V

REF

= 4.096V (external reference operation), REFCAP = AV

DD1

, maximum single-ended bipolar input range

(±12V), C

DOUT

= 50pF, C

SSTRB

= 50pF, T

= -40°C to +85°C, unless otherwise noted. Typical values are at T

= +25°C.)

1 2 3 4 5 6 7 8 9 10 ... 30 31

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