Rainbow-electronics MAX5295 Bedienungsanleitung PDF herunterladen (Seite 3)

MAX5290–MAX5295

Buffered, Fast-Settling, Dual, 12-/10-/8-Bit,

Voltage-Output DACs

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (continued)

(AV

= 2.7V to 3.6V, DV

= 1.8V to AV

, AGND = 0, DGND = 0, V

REF

= 2.5V, R

= 10kΩ, C

= 100pF, T

= T

MIN

to T

MAX

, unless

otherwise noted. Typical values are at T

= +25°C.) (Note 1)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Power-Supply Rejection

Ratio

PSRR Full-scale output, AV

= 2.7V to 3.6V 200 µV/V

REFERENCE INPUT

Reference Input Range V

REF

0.25 AV

Reference Input

Resistance

REF

Normal operation (no code dependence) 145 200 kΩ

Reference Leakage

Current

REF

Shutdown mode 0.5 1 µA

DAC OUTPUT CHARACTERISTICS

Unity gain 85

SLOW mode,

full scale

Force sense 67

Unity gain 140

Output Voltage Noise

FAST mode,

full scale

Force sense 110

µV

RMS

Unity-gain output 0 AV

Output Voltage Range

(Note 4)

Force-sense output 0 AV

/ 2

DC Output Impedance 38 Ω

Short-Circuit Current AV

= 3V, OUT_ to AGND, full scale, FAST mode 45 mA

Power-Up Time From DV

applied, interface is functional 30 60 µs

Wake-Up Time Coming out of shutdown, outputs settled 40 µs

Output OUT_ and FB_

Open-Circuit Leakage

Current

Programmed in shutdown mode, force-sense

outputs only

0.01 µA

DIGITAL OUTPUTS (UPIO_)

Output High Voltage V

SOURCE

= 2mA

0.5

Output Low Voltage V

SINK

= 2mA 0.4 V

DIGITAL INPUTS (SCLK, CS, DIN, DSP, UPIO_)

2.7V ≤ DV

≤ 3.6V 2.4

Input High Voltage V

< 2.7V

0.7 x

2.7V ≤ DV

≤ 3.6V 0.6

Input Low Voltage V

< 2.7V 0.2

Input Leakage Current I

±0.1 ±1 µA

Input Capacitance C

10 pF

1 2 3 4 5 6 7 8 ... 32 33

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