EVAL-AD7723CBZ Analog Devices Inc, EVAL-AD7723CBZ Datasheet - Page 16

• Manufacturer Part Number: EVAL-AD7723CBZ
• Description: BOARD EVALUATION FOR AD7723
• Manufacturer: Analog Devices Inc

Specifications of EVAL-AD7723CBZ

• Number Of Adc's: 1
• Number Of Bits: 16
• Sampling Rate (per Second): 1.2M
• Data Interface: Serial, Parallel
• Inputs Per Adc: 1 Differential
• Input Range: ±VREF
• Power (typ) @ Conditions: 475mW @ 1.2MSPS
• Voltage Supply Source: Analog and Digital
• Operating Temperature: -40°C ~ 85°C
• Utilized Ic / Part: AD7723
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

AD7723
Figure 20. Differential Nonlinearity (Output Data Rate = 1.2 MHz)
2000
1800
1600
1400
1200
1000
5000
4500
4000
3500
3000
2500
2000
1500
1000
800
600
400
200
500
–0.2
–0.4
–0.6
–0.8
–1.0
32700
32703
1.0
0.8
0.6
0.4
0.2
0
0
0
0
Figure 18. Histogram of Output Codes with DC Input
Figure 19. Histogram of Output Codes with DC Input
V
8192 SAMPLES TAKEN
V
8192 SAMPLES TAKEN
IN
IN
67108864 SAMPLES TAKEN
DIFFERENTIAL MODE
(+) = V
(+) = V
32702
32704
IN
IN
(–)
(–)
(Output Data Rate = 1.2 MHz)
(Output Data Rate = 600 kHz)
16384
32704
32705
32706
32706
CODE
CODE
CODE
32768
32708
32707
32710
32708
49152
32709
32712
32710
65535
32713
Rev. C | Page 16 of 32
GAIN = 2 × R
R
R
BALANCE1
REF2
= R
Figure 21. Differential Nonlinearity (Output Data Rate = 600 kHz)
Figure 23. Integral Nonlinearity (Output Data Rate = 600 kHz)
Figure 22. Integral Nonlinearity (Output Data Rate =1.2 MHz)
–0.2
–0.4
–0.6
–0.8
–1.0
–0.2
–0.4
–0.6
–0.8
–1.0
REF1
1.0
0.8
0.6
0.4
0.2
1.0
0.8
0.6
0.4
0.2
= R
AIN = ±2V
GROUND
FB
0
0
BIASED
ABOUT
0
0
/(R
BALANCE2
× (R
67108864 SAMPLES TAKEN
DIFFERENTIAL MODE
67108864 SAMPLES TAKEN
DIFFERENTIAL MODE
IN
IN
+ R
+ R
SOURCE
SOURCE
× (R
R
R
10kΩ
SOURCE
REF1
IN
50Ω
16384
16384
R
R
20kΩ
BALANCE1
)
REF2
+ R
)/R
220Ω
SOURCE
FB
390Ω
R
IN
R
)/(2 × R
R
BALANCE2
BALANCE2
A2
220Ω
220Ω
A1
220Ω
CODE
AD8047
32768
32768
CODE
R
AD8047
FB
FB
220nF
)
27Ω
27Ω
10nF
1µF
220pF
49152
49152
20
19
23
21
VIN(+)
VIN(–)
REF2
REF1
AD7723
65535
65535