Rainbow-electronics MAX5547 Manual de usuario descargar pdf (Pagina 3)

MAX5547

Dual, 10-Bit, Current-Sink Output DAC

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (continued)

= +2.7 to +5.25V, GND = 0, external reference = +2.5V, output voltage = +2.0V, T

= -40°C to +85°C. Typical values are at

= +3.0V, and T

= +25°C.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN TYP MAX

UNITS

External-Reference Input

Impedance

REF

90 kΩ

DAC OUTPUTS

Code = 030h 50

1.2mA low-current

range

Code = 3FFh

1170 1200 1230

Code = 030h 150

Output Current (Note 4) I

OUT

3.6mA high-current

range

Code = 3FFh

3400 3600 3800

µA

1.2mA full-scale current

1.17

LSB Size

3.6mA full-scale current

3.52

µA

Current-Source Compliance

Voltage Range

OUT

_ = full-scale (Note 5) 0.8

OUT

_ = 1.2mA 800

Output Impedance at Full-Scale

Current

OUT

_ = 3.6mA 180

kΩ

DYNAMIC PERFORMANCE

Settling Time t

To 1% (Note 6) 10 µs

f = 0.1Hz to 10Hz

0.05

Output Noise I

RMS

f = 10Hz to 10kHz

0.35

LSB

RMS

Supply Feedthrough 100mV, 1kHz signal added to V

0.85

LSB/V

Digital Feedthrough R

LOAD

= 500Ω, C

LOAD

= 100pF 2

pA·s

Digital-to-Analog Glitch Impulse R

LOAD

= 500Ω, C

LOAD

= 100pF 16

pA·s

DAC-to-DAC Full-Scale Current

Matching

POWER SUPPLIES

Supply Voltage V

+2.70 +5.25

Internal reference

mode

1.1 2

Supply Current I

= +5.25V, no load,

SCLK not switching

External reference

mode

0.75

1.5

LOGIC AND CONTROL INPUTS

Input High Voltage V

(Note 7)

0.7 x

Input Low Voltage V

(Note 7) 0.8 V

Input Hysteresis V

HYS

0.05 x

Input Capacitance C

10 pF

Input Leakage Current I

±1 µA

1 2 3 4 5 6 7 8 ... 11 12

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Rainbow-electronics MAX5547 Manual de usuario Pagina 3

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