EVAL-CED1Z View Datasheet(PDF) - Analog Devices
Part Name
Description
MFG CO.
EVAL-CED1Z
Analog Devices
'EVAL-CED1Z' PDF : 29 Pages View PDF
AD7264
–90
–88
–86
–84
–82
–80
–78
–76
AVCC = 5V
–74
VDRIVE = 5V
fS = 1MSPS
–72
INTERNAL REFERENCE
fRIPPLE = 50kHz
–70
1 2 3 4 6 8 12 16 24 32 48 64 96 128
GAIN
Figure 17. Common-Mode Rejection vs. Gain
–80
–79
–78
–77
–76
–75
–74
–73
–72
–71
–70
0
AVCC = 5V
VDRIVE = 5V
fS = 1MSPS
VRIPPLE = 700mV p-p
GAIN = 2
INTERNAL REFERENCE
20 40 60 80 100 120 140 160 180 200
RIPPLE FREQUENCY (kHz)
Figure 18. Common-Mode Rejection vs. Common-Mode Ripple Frequency
–10
AVCC = 5V
–20
VDRIVE = 5V
fS = 1MSPS
–30
fIN = 100kHz
INTERNAL REFERENCE
–40
–50
G=1
G=2
G=3
G=4
–60
G=6
–70
G = 16
–80
G ≥ 32
G = 24
–90
G = 12
–100
G=8
1.3 1.5 1.7 1.9 2.1 2.3 2.5 2.7 2.9 3.1 3.3 3.5 3.7
VCM RANGE (V)
Figure 19. THD vs. Common-Mode Voltage Range for Various
PGA Gain Settings
10
AVCC = 5V
9
VDRIVE = 3.3V
TA = 25°C
8
H TO L, CA_CBVCC = 3.6V
7
H TO L, CA_CBVCC = 4.5V
6
H TO L, CA_CBVCC = 2.7V
H TO L, CA_CBVCC = 5V
5
L TO H, CA_CBVCC = 2.7V
L TO H, CA_CBVCC = 3.6V
4
L TO H, CA_CBVCC = 4.5V
3
L TO H, CA_CBVCC = 5V
2
1
0
0 10 20 30 40 50 60 70 80 90 100
OVERDRIVE VOLTAGE (mV)
Figure 20. Propagation Delay for Comparator A and Comparator B
vs. Overdrive Voltage for Various Supply Voltages
2.0
AVCC = 5V
1.8
VDRIVE = 3.3V
TA = 25°C
1.6
1.4
L TO H, CC_CDVCC = 2.7V
1.2
L TO H, CC_CDVCC = 3.6V
L TO H, CC_CDVCC = 4.5V
1.0
L TO H, CC_CDVCC = 5V
H TO L, CC_CDVCC = 2.7V
0.8
H TO L, CC_CDVCC = 3.6V
0.6
H TO L, CC_CDVCC = 5V
H TO L, CC_CDVCC = 4.5V
0.4
0.2
0
0 10 20 30 40 50 60 70 80 90 100
OVERDRIVE VOLTAGE (mV)
Figure 21. Propagation Delay for Comparator C and Comparator D
vs. Overdrive Voltage for Various Supply Voltages
–70
VDRIVE = 5V
–75 GAIN = 2
TA = 25°C
–80 INTERNAL REFERENCE
100mV p-p SINE WAVE ON AVCC
–85 AVCC DECOUPLED WITH
10µF AND 100nF CAPACITORS
–90
–95
–100
–105
–110
–115
–120
0
200
400
600
800
SUPPLY RIPPLE FREQUENCY (kHz)
Figure 22. Power Supply Rejection Ratio
1000
Rev. A | Page 12 of 32
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