DAC7678SPW datasheet(4/52 Pages) TI

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DAC7678

SBAS493A – FEBRUARY 2010 – REVISED AUGUST 2010

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ELECTRICAL CHARACTERISTICS (continued)

At AVDD = 2.7V to 5.5V, External Reference Used, and over –40°C to +125°C, unless otherwise noted.

DAC7678

PARAMETER

TEST CONDITIONS

UNIT

MIN

TYP

MAX

INTERNAL REFERENCE

Output voltage

TA = +25°C

2.495

2.5

2.505

Initial accuracy

TA = +25°C

–5

±0.1

Output voltage temperature drift(4)

ppm/°C

Output voltage noise

TA = +25°C, f = 0.1Hz to 10Hz

mVPP

TA = +25°C, f = 1kHz, CL = 0mF

250

Output voltage noise density

nV/

√Hz

(high-frequency noise)

TA = +25°C, f = 1MHz, CL = 0mF

Sourcing, TA = +25°C

500

mV/mA

Load regulation(5)

Sinking, TA = +25°C

200

mV/mA

Output current load capability(4)

±20

Line regulation

TA = +25°C

mV/V

Long-term stability/drift (aging)(5)

TA = +25°C, time = 0 to 2160 hours

100

ppm

First cycle

200

ppm

Thermal hysteresis(5)

Additional cycles

ppm

AVDD = 5.5V

420

Internal reference current consumption

AVDD = 3.6V

400

External VREF = 2.5V (when internal reference is disabled), all

External reference current

eight channels active

VREFIN/VREFOUT pin reference input range

AVDD

Reference input impedance

Reference disabled

Ω

LOGIC INPUTS(4)

Input current

±1

VINL

Logic input LOW voltage

2.7V

≤ AVDD ≤ 5.5V

GND–0.3

0.3×AVDD

VINH

Logic input HIGH voltage

2.7V

≤ AVDD ≤ 5.5V

0.7×AVDD

AVDD+0.3

Pin capacitance

1.5

POWER REQUIREMENTS

AVDD

2.7

5.5

AVDD = 3.6V to 5.5V, VINH = AVDD and VINL = GND

1.02

1.4

Normal mode, internal

reference switched off

AVDD = 2.7V to 3.6V, VINH = AVDD and VINL = GND

0.86

1.3

AVDD = 3.6V to 5.5V, VINH = AVDD and VINL = GND

1.49

2.2

Normal mode, internal

IDD

(6)

reference switched on

AVDD = 2.7V to 3.6V, VINH = AVDD and VINL = GND

1.32

AVDD = 3.6V to 5.5V, VINH = AVDD and VINL = GND

0.42

All power-down modes

AVDD = 2.7V to 3.6V, VINH = AVDD and VINL = GND

0.25

4.7

AVDD = 3.6V to 5.5V, VINH = AVDD and VINL = GND

3.67

7.7

Normal mode, internal

reference switched off

AVDD = 2.7V to 3.6V, VINH = AVDD and VINL = GND

2.32

4.68

AVDD = 3.6V to 5.5V, VINH = AVDD and VINL = GND

5.36

12.1

Power

Normal mode, internal

dissipation(6)

reference switched on

AVDD = 2.7V to 3.6V, VINH = AVDD and VINL = GND

3.56

7.2

AVDD = 3.6V to 5.5V, VINH = AVDD and VINL = GND

1.51

All power-down modes

AVDD = 2.7V to 3.6V, VINH = AVDD and VINL = GND

0.68

16.92

TEMPERATURE RANGE

Specified performance

–40

+125

°C

(4)

Specified by design or characterization; not production tested.

(5)

Explained in more detail in the Application Information section of this data sheet.

(6)

Input code = midscale, no load.

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