MAX5547_09 datasheet(4/12 Pages) MAXIM

Part #	MAX5547

Description	Dual, 10-Bit, Current-Sink Output DAC

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Manufacturer	MAXIM [Maxim Integrated Products]

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Dual, 10-Bit, Current-Sink Output DAC

4

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ELECTRICAL CHARACTERISTICS (continued)

(VDD = +2.7 to +5.25V, VGND = 0V, external reference = +2.5V, output voltage = +2.0V, TA = -40°C to +85°C. Typical values are at

VDD = +3.0V, and TA = +25°C.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

SPI TIMING CHARACTERISTICS (see Figure 1)

SCLK Clock Period

tCP

100

ns

SCLK Pulse-Width High

tCH

40

ns

SCLK Pulse-Width Low

tCL

40

ns

CS Fall to SCLK Fall Setup Time

tCSS

25

ns

SCLK Fall to

CS Rise Hold Time

tCSH

50

ns

DIN to SCLK Fall Setup Time

tDS

40

ns

DIN to SCLK Fall Hold Time

tDH

0ns

CS Pulse-Width High

tCSW

100

ns

Note 1: Devices are 100% production tested at TA = +25°C. Limits over temperature are guaranteed by design.

Note 2: INL linearity is from code 48 to code 1023.

Note 3: Specification based on characterization data. Not production tested.

Note 4: Guaranteed by design. Not production tested.

Note 5: The DACs continue to operate at currents lower than 50µA on the 1.2mA range and 150µA on the 3.6mA range. However,

performance is not guaranteed at these low currents. A code of all zeros has a nominal output current of 0µA.

Note 6: Compliance voltage range is defined as the range where the output current is -2 LSB of its value at VOUT = +1V.

Note 7: Settling time is measured from 0.25 x full scale to 0.75 x full scale.

Note 8: The device draws higher supply current when the digital inputs are driven with voltages between (VDD - 0.5V) and (GND +

0.5V). See Supply Current vs. Digital Input Voltage in the

Typical Operating Characteristics.

Typical Operating Characteristics

(VDD = +3.0V, VGND = 0V, external reference = +2.5V, TA = +25°C, unless otherwise noted.)

INTEGRAL NONLINEARITY

vs. DIGITAL INPUT CODE (1.2mA SETTING)

DIGITAL INPUT CODE

768

512

256

-3

-2

-1

0

1

2

3

4

-4

0

1024

-4

-3

-2

-1

0

1

2

3

4

0

256

512

768

1024

INTEGRAL NONLINEARITY

vs. DIGITAL INPUT CODE (3.6mA SETTING)

DIGITAL INPUT CODE

-1.00

-0.75

-0.50

-0.25

0

0.25

0.50

0.75

1.00

0

256

512

768

1024

DIFFERENTIAL NONLINEARITY

vs. DIGITAL INPUT CODE (1.2mA SETTING)

DIGITAL INPUT CODE

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