Rainbow-electronics MAX5231 Instrukcja Użytkownika Pobierz pdf (Strona 4)

MAX5230/MAX5231

3V/5V, 12-Bit, Serial Voltage-Output Dual DACs

with Internal Reference

4 _______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS—MAX5230 (continued)

= +2.7V to +3.6V, OS_ = AGND = DGND = 0, R

= 5kΩ, C

= 100pF, T

= T

MIN

to T

MAX

, unless otherwise noted. Typical values

are at T

= +25°C.)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Reference External Load Regulation V

OUT

0 ≤ I

OUT

≤ 100µA (sourcing) 0.1 2 µV/µA

Reference Short-Circuit Current 4 mA

DIGITAL INPUTS

Input High Voltage V

0.7 x V

Input Low Voltage V

0.3 x V

Input Hysteresis V

HYS

200 mV

Input Leakage Current I

Digital inputs = 0 or V

±1µA

Input Capacitance C

8pF

DIGITAL OUTPUTS

Output High Voltage V

SOURCE

= 2mA 2.3 V

Output Low Voltage V

SINK

= 2mA 0.25 V

DYNAMIC PERFORMANCE

Voltage-Output Slew Rate SR 0.6 V/µs

Voltage-Output Settling Time

To ±0.5 LSB, V

STEP

= ±2V

- 0.25V) ≥ V

OUT

≥ 0.25V

10 µs

Output-Voltage Swing (Note 5) 0 to V

OS_ Input Resistance R

83 121 kΩ

Time Required for Output to Settle After

Turning on V

(Note 6)

95 400 µs

Time Required for Output to Settle After

Exiting Full Power-Down (Note 6)

95 400 µs

Time Required for Output to Settle After

Exiting DAC Power-Down (Note 6)

12 160 µs

Digital Feedthrough

CS =V

, f

SCLK

= 100kHz,

SCLK

= 3V

P-P

5 nV-s

Major-Carry Glitch Energy 90 nV-s

1 2 3 4 5 6 7 8 9 ... 17 18

MAX5230/MAX5231 1

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