DAC8420 datasheet(8/16 Pages) AD

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DAC8420

REV. 0

–8–

Table III. Analog Output Code

DAC Data Word (HEX)

VOUT

Note

FFF

VREFLO

(VREFHI – VREFLO )

4096

× 4095

Full-Scale Output

801

VREFLO

(VREFHI – VREFLO )

4096

× 2049

Midscale + 1

800

VREFLO

(VREFHI – VREFLO )

4096

× 2048

Midscale

7FF

VREFLO

(VREFHI – VREFLO )

4096

× 2047

Midscale – 1

000

VREFLO

(VREFHI – VREFLO )

4096

× 0

Zero Scale

Typical Performance Characteristics

0.3

–0.3

–0.2

–4

–0.1

–6

0.2

0.1

–2

VVREFHI – V

TA = +25°C

VDD = +15V, VSS = –15V

VVREFLO = –10V

Figure 4. INL vs. VREFHI (

±15 V)

0.3

–0.3

–0.2

–4

–0.1

–6

0.2

0.1

–2

VVREFHI – V

TA = +25°C

VDD = +15V, VSS = –15V

VVREFLO = –10V

Figure 2. Differential Linearity vs.

VREFHI (

±15 V)

0.10

–0.30

–0.20

–0.25

1.5

–0.10

–0.15

–0.05

0.05

3.5

3.0

2.5

2.0

VREFHI

– V

= +25°C

= +5V, V

= 0V

VREFLO

= 0V

Figure 3. Differential Linearity vs.

VREFHI (+5 V)

0.4

–0.4

–0.2

–0.3

1.5

–0.1

0.1

0.2

0.3

3.5

3.0

2.5

2.0

VVREFHI – V

TA = +25°C

VDD = +5V, VSS = 0V

VVREFLO = 0V

Figure 5. INL vs. VREFHI (+5 V)

0.7

–0.5

1000

0.1

–0.3

200

–0.1

0.5

0.3

800

600

400

T = HOURS OF OPERATION AT +125

°C

x + 3

x – 3

CURVES NOT NORMALIZED

VDD = +15V, VSS = –15V

VVREFHI = +10V

VVREFLO = –10V

Figure 6. Full-Scale Error vs.

Time Accelerated by Burn-In

1.2

1000

0.6

0.2

200

0.4

1.0

0.8

800

600

400

T = HOURS OF OPERATION AT +125

°C

x + 3

x – 3

CURVES NOT NORMALIZED

VDD = +15V, VSS = –15V

VVREFHI = +10V

VVREFLO = –10V

Figure 7. Zero-Scale Error vs.

Time Accelerated by Burn-In

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