Rainbow-electronics MAX5550 Manual do Utilizador descarregar pdf (Página 3)

MAX5550

Dual, 10-Bit, Programmable, 30mA

High-Output-Current DAC

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (continued)

= +2.7V to +5.25V, GND = 0, V

REFIN

= +1.25V, internal reference, R

FSADJ_

= 20kΩ; compliance voltage = (V

- 0.6V),

SCLK/SCL

= 0, T

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

= +3.0V and T

= +25°C.) (Note 1)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Digital-to-Analog Glitch Impulse 40 nVs

DAC-to-DAC Current Matching 2%

= +3V 400

Wake-Up Time

= +5V 10

µs

POWER SUPPLIES

Supply Voltage V

+2.70 +5.25 V

Supply Current I

= +5.25V, no load 3 6 mA

Shutdown Current 1.2 µA

LOGIC AND CONTROL INPUTS

+2.7V ≤ V

≤ +3.4V

0.7 x

Input High Voltage (Note 5) V

+3.4V < V

≤ +5.25V 2.4

Input Low Voltage V

(Note 5) 0.8 V

Input Hysteresis V

HYS

0.1 x

Input Capacitance C

10 pF

Input Leakage Current I

±1 µA

Output Low Voltage V

SINK

= 3mA 0.6 V

Output High Voltage V

SOURCE

= 2mA

0.5

C TIMING CHARACTERISTICS (Figure 2)

SCL Clock Frequency f

SCL

400 kHz

Setup Time for START Condition t

SU:STA

600 ns

Hold Time for START Condition t

HD:STA

600 ns

SCL Pulse-Width Low t

LOW

130 ns

SCL Pulse-Width High t

HIGH

600 ns

Data Setup Time t

SU:DAT

100 ns

Data Hold Time t

HD:DAT

070ns

SCL Rise Time t

RCL

20 + 0.1

x C

300 ns

SCL Fall Time t

FCL

20 + 0.1

x C

300 ns

SDA Rise Time t

RDA

20 + 0.1

x C

300 ns

SDA Fall Time t

FDA

20 + 0.1

x C

300 ns

1 2 3 4 5 6 7 8 ... 14 15

High-Output-Current DAC 1

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