Rainbow-electronics MAX1338 Manual do Utilizador descarregar pdf (Página 4)

MAX1338

14-Bit, 4-Channel, Software-Programmable,

Multiranging, Simultaneous-Sampling ADC

4 _______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

(AV

= DV

= +5.0V, DRV

= +3.0V, AGND = DGND = DRGND = 0, INTCLK/EXTCLK = AGND, f

CLK

= 5MHz, input range =

±10V, REFP2 = REFP1, REFN2 = REFN1, COM1 = COM2, 1.0nF from REFADC to AGND, 1.0µF and 0.1µF from COM1 to AGND,

0.1µF from REFP1 to AGND, 0.1µF from REFN1 to AGND, 1.0µF from REFP1 to REFN1. Typical values are at T

= +25°C. T

= T

MIN

to T

MAX

, unless otherwise noted.)

PARAMETER

SYMBOL

CONDITIONS

MIN TYP MAX

UNITS

Input Current I

= 0 or DRV

±1 µA

DIGITAL INTERFACE AND CONTROL OUTPUTS (EOC, EOLC)

Output-Voltage High V

Sourcing 0.8mA

DRV

- 0.6

Output-Voltage Low V

Sinking 1.6mA 0.4 V

PARALLEL DIGITAL I/O (D0–D7)

Output-Voltage High V

Sourcing 0.8mA

DRV

0.6

Output-Voltage Low V

Sinking 1.6mA 0.4 V

Leakage Current 1µA

Tristate Output Capacitance RD = 1 or CS = 1 15 pF

Input-Voltage High V

0.7 x

DRV

Input-Voltage Low V

0.3 x

DRV

Input Hysteresis 50 mV

Input Capacitance C

15 pF

Input Current I

= 0 or DRV

±1 µA

PARALLEL DIGITAL OUTPUTS (D8–D13)

Output-Voltage High V

Sourcing 0.8mA

DRV

0.6

Output-Voltage Low V

Sinking 1.6mA 0.4 V

Leakage Current 1µA

Tristate Output Capacitance 15 pF

POWER SUPPLIES

Analog Supply Voltage AV

4.75

5.25

Digital Supply Voltage DV

4.75

5.25

Parallel Digital I/O Supply Voltage

DRV

2.70 5.25

41 60

SHDN = 1

0.005

0.1Analog Supply Current AI

STANDBY = 1, SHDN = 0 4.2 5

SHDN = 1

0.001 0.05

Digital Supply Current DI

STANDBY = 1, SHDN = 0

0.001 0.05

SHDN = 1 0

0.05

Digital Driver Supply Current DRI

STANDBY = 1, SHDN = 0 0

0.05

Analog Power-Supply Rejection

4.75V to 5.25V (Note 1) 75 dB

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

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