DAC8420 Datasheet, PDF (8/16 Pages) Analog Devices – Quad 12-Bit Serial Voltage Output DAC

DAC8420
Table III. Analog Output Code
DAC Data Word (HEX)
V_OUT
FFF
VREFLO + ^{(VREFHI – VREFLO )} × 4095
4096
801
VREFLO
+
(VREFHI –VREFLO
4096
)
×
2049
800
VREFLO + ^{(VREFHI – VREFLO )} × 2048
4096
7FF
VREFLO + ^{(VREFHI – VREFLO )} × 2047
4096
000
VREFLO + ^{(VREFHI – VREFLO )} × 0
4096
Typical Performance Characteristics
0.3
T_A = +25°C
0.2
V_DD = +15V, V_SS = –15V
V_VREFLO = –10V
0.1
0
–0.1
–0.2
–0.3
–6 –4 –2
0 24 68
V_VREFHI – V
10 12 14
Figure 2. Differential Linearity vs.
VREFHI (±15 V)
0.10
0.05
0
–0.05
T_A = +25°C
V_DD = +5V, V_SS = 0V
V_VREFLO = 0V
–0.10
–0.15
–0.20
–0.25
–0.30
1.5 2.0 2.5 3.0 3.5
V_VREFHI – V
Figure 3. Differential Linearity vs.
VREFHI (+5 V)
0.4
0.3
T_A = +25°C
V_DD = +5V, V_SS = 0V
0.2
V_VREFLO = 0V
0.1
0
–0.1
–0.2
–0.3
–0.4
1.5 2.0 2.5 3.0 3.5
V_VREFHI – V
Figure 5. INL vs. VREFHI (+5 V)
0.7
x + 3σ
0.5
V_DD = +15V, V_SS = –15V
0.3
V_VREFHI = +10V
V_VREFLO = –10V
0.1
x
–0.1
–0.3
x – 3σ
–0.5
0
200 400 600 800 1000
T = HOURS OF OPERATION AT +125°C
CURVES NOT NORMALIZED
Figure 6. Full-Scale Error vs.
Time Accelerated by Burn-In
Note
Full-Scale Output
Midscale + 1
Midscale
Midscale – 1
Zero Scale
0.3
0.2
0.1
0
–0.1
–0.2
T_A = +25°C
V_DD = +15V, V_SS = –15V
V_VREFLO = –10V
–0.3
–6 –4 –2
0 24 68
V_VREFHI – V
10 12 14
Figure 4. INL vs. VREFHI (±15 V)
1.2
x + 3σ
1.0
0.8
V_DD = +15V, V_SS = –15V
V_VREFHI = +10V
V_VREFLO = –10V
0.6
x
0.4
0.2
x – 3σ
0
0
200 400 600 800 1000
T = HOURS OF OPERATION AT +125°C
CURVES NOT NORMALIZED
Figure 7. Zero-Scale Error vs.
Time Accelerated by Burn-In
–8–
REV. 0