Rainbow-electronics MAX5100 Manual do Utilizador descarregar pdf (Página 5)

MAX5100

+2.7V to +5.5V, Low-Power, Quad, Parallel

8-Bit DAC with Rail-to-Rail Voltage Outputs

_______________________________________________________________________________________ 5

-80

-60

-70

-50

-20

-10

-30

-40

1 10 100

TOTAL HARMONIC DISTORTION PLUS NOISE

AT DAC OUTPUT vs. REFERENCE FREQUENCY

MAX5100 toc07

FREQUENCY (kHz)

THD + NOISE (dB)

= +3V

DAC CODE = FF HEX

REF

= SINE WAVE CENTERED AT 1.5V

1kHz FREQUENCY

500kHz FILTER

REF = 1V

p-p

REF = 2V

p-p

REF = 0.5V

p-p

-90

0.01 1010.1

REFERENCE INPUT

FREQUENCY RESPONSE

-60

-80

-20

-40

-50

-70

-10

-30

MAX5100 toc08

FREQUENCY (MHz)

OUTPUT AMPLITUDE (dB)

CODE = FF HEX, REF IS 1V

p-p

SIGNAL

REF

= 1.5V

WORST-CASE 1LSB DIGITAL STEP CHANGE

(NEGATIVE)

MAX55100 toc09

1µs/div

CH1 = LDAC, 2V/div

CH2 = V

OUTA

, 50mV/div,

AC-COUPLED

DAC CODE FROM

80 TO 7F HEX

WORST-CASE 1LSB DIGITAL STEP CHANGE

(POSITIVE)

MAX55100 toc10

1µs/div

CH1 = LDAC, 2V/div

CH2 = V

OUTA

, 50mV/div,

AC-COUPLED

DAC CODE FROM

7F TO 80 HEX

DIGITAL FEEDTHROUGH GLITCH IMPULSE

(0 TO 1 DIGITAL TRANSITION)

MAX55100 toc11

20ns/div

CH1 = D7, 2V/div

CH2 = V

OUTA

, 2mV/div,

AC-COUPLED

0 TO 1 DIGITAL TRANSITION ON

ALL DATA BITS (WITH WR HIGH,

LDAC LOW)

DIGITAL FEEDTHROUGH GLITCH IMPULSE

(1 TO 0 DIGITAL TRANSITION)

MAX55100 toc12

20ns/div

CH1 = D7, 2V/div

CH2 = V

OUTA

, 2mV/div,

AC-COUPLED

1 TO 0 DIGITAL TRANSITION ON

ALL DATA BITS (WITH WR HIGH,

LDAC LOW)

POSITIVE SETTLING TIME

MAX55100 toc13

1µs/div

CH1 = WR, 2V/div

CH2 = V

OUTA

, 2V/div

DAC CODE FROM

10 TO F0 HEX

NEGATIVE SETTLING TIME

MAX55100 toc14

1µs/div

CH1 = WR, 2V/div

CH2 = V

OUTA

, 2V/div

DAC CODE FROM

10 TO F0 HEX

0.5

0.4

0.3

0.2

0.1

-0.1

-0.2

-0.3

-0.4

-0.5

0 32 64 96 128 160 192 224 256

INTEGRAL AND DIFFERENTIAL NONLINEARITY

vs. DIGITAL CODE

MAX5100 toc15

DIGITAL CODE

INL/DNL (LSB)

= ∞

DNL

INL

Typical Operating Characteristics (continued)

= V

REF

= +3V, R

= 10kΩ, C

= 100pF, code = FF hex, T

= +25°C, unless otherwise noted.)

1 2 3 4 5 6 7 8

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