Rainbow-electronics MAX5231 Manual do Utilizador descarregar pdf (Página 2)

MAX5230/MAX5231

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

with Internal Reference

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS—MAX5231

= +4.5V to +5.5V, OS_ = AGND = DGND = 0, R

= 5kΩ, C

= 100pF, T

= T

MIN

to T

MAX

, unless otherwise noted. Typical values

are at T

= +25°C.)

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional

operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to

absolute maximum rating conditions for extended periods may affect device reliability.

to AGND, DGND...............................................-0.3V to +6V

AGND to DGND.....................................................-0.3V to +0.3V

Digital Inputs to DGND.............................................-0.3V to +6V

Digital Output (DOUT) to DGND...................-0.3V to V

+ 0.3V

OUT_ to AGND .............................................-0.3V to V

+ 0.3V

OS_ to AGND...................................................-4V to V

+ 0.3V

Maximum Current into Any Pin............................................50mA

Continuous Power Dissipation (T

= +70°C)

16-Pin QSOP (derate 8.3mW/°C above +70°C)...........667mW

Operating Temperature Range ...........................-40°C to +85°C

Storage Temperature Range .............................-65°C to +150°C

Lead Temperature (soldering, 10s) .................................+300°C

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

STATIC PERFORMANCE

Resolution N 12 Bits

MAX5231A ±0.5

Integral Nonlinearity (Note 1) INL

MAX5231B ±1

LSB

Differential Nonlinearity DNL ±1 LSB

Offset Error (Note 2) V

±3mV

Offset-Temperature Coefficient (Note 3) TCV

8 µV/°C

Full-Scale Voltage V

Code = FFF hex, T

= +25°C 4.070 4.095 4.120 V

MAX5231A 3 10

Full-Scale Temperature Coefficient

(Note 3)

TCV

MAX5231B (Note 6) 10 30

ppm/°C

Power-Supply Rejection PSR 4.5V ≤ V

≤ 5.5V 30 200 µV

DC Crosstalk (Note 4) 100 µV

REFERENCE

Output Voltage V

REF

2.465 V

MAX5231A 3

Output-Voltage Temperature

Coefficient (Note 3)

TCV

REF

MAX5231B 10

ppm/°C

Reference External Load Regulation V

OUT

0 ≤ I

OUT

≤ 100µA (sourcing) 0.1 2 µV/µA

Reference Short-Circuit Current 4mA

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 4.25 V

Output Low Voltage V

SINK

= 2mA 0.2 V

DYNAMIC PERFORMANCE

Voltage-Output Slew Rate SR 0.6 V/µs

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

MAX5230/MAX5231 1

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