AD8842AR Просмотр технического описания (PDF) - Analog Devices
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AD8842AR Datasheet PDF : 13 Pages
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AD8842–Typical Performance Characteristics
+1/2
0
–1/2
+1/2
0
–1/2
DACs A, B, C, D SUPERIMPOSED
TA = +25°C
VDD = +5V
VSS = – 5V
VINX = +3V
DACs E, F, G, H SUPERIMPOSED
0
64
128
192
256
DIGITAL INPUT CODE – Decimal
Figure 4. Linearity Error vs.
Digital Code
0.4
0.3
TA = +125 °C
0.2
TA = +25 °C
0.1
0
–0.1
–0.2
–0.3
–0.4
0
TA = –55 °C
DAC A
VDD = +5V
VSS = –5V
VINX = +3V
64
128
192
256
DIGITAL INPUT CODE – Decimal
Figure 5. Linearity Error vs.
Digital Code vs. Temperature
8
6
VINX = +3V
4
2
0
–2
VINX = –3V
–4
–8
VDD = +4.75V
–10 VSS = –4.75V
–75 –50 –25 0 25 50 75 100 125
TEMPERATURE – °C
Figure 6. VOUT Half Scale (80H)
vs. Temperature
21
VIN = +3V
20
AVG +2σ
19
AVG
18
AVG –2σ
17
VDD = +4.75V
VSS = –4.75V
16
–75 –50 –25 0 25 50 75 100 125
TEMPERATURE – °C
Figure 7. Input Resistance (VIN)
vs. Temperature
100
VIN = +4Vp-p
fLPF = 80kHz
10 CODE = FFH
1
0.1
0.01
RL = 2kΩ
0.001
10
100
1k
10k
FREQUENCY – Hz
100k
Figure 8. Total Harmonic Distortion
vs. Frequency
4
VDD = +4.75V
VSS = –4.75V
3
∆VIN = ±3V
2
SR+
SR–
1
0
–75 –50 –25 0 25 50 75 100 125
TEMPERATURE – °C
Figure 9. VOUT Slew Rate
vs. Temperature
0
–45
–90
–135
–180
–225
–270
–315
–360
GAIN
PHASE
CODE = ALL ONES
–FS 0
–10
+FS
–20
–30
–40
PHASE
CODE = ALL ZEROS
VIN = ± 100mV
TA = +25°C
10k
100k
1M
10M
FREQUENCY – Hz
Figure 10. Gain and Phase vs.
Frequency (Code = 00H or FFH)
0
INPUT A dB
OUTPUT B
15
30
VIN A = 100mVpp
VIN B = 0V
TA = +25°C
45
60
75
90
105
120
135
1k
10k
100k
1M
10M
FREQUENCY – Hz
Figure 11. DAC Crosstalk
vs. Frequency
1
TA = +25°C
VIN = 0V
0.8
0.6
0.4
0.2
0
10
100
1k
10k
100k
FREQUENCY – Hz
Figure 12. Voltage Noise Density
vs. Frequency
–6–
REV. A
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