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AD7722 Datasheet(PDF) 12 Page - Analog Devices

Part # AD7722
Description  16-Bit, 195 kSPS CMOS,-ADC
PDF  24 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD7722 Datasheet(HTML) 12 Page - Analog Devices

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REV. B
–12–
AD7722–Typical Performance Characteristics
(AVDD = DVDD = 5.0 V, TA = 25 C; CLKIN = 12.5 MHz, AIN = 20 kHz, Bipolar Mode; VIN(+) = 0 V to 2.5 V, VIN(–) = 1.25 V, unless otherwise noted.)
INPUT LEVEL (dB)
110
100
50
–40
–30
0
–20
–10
90
80
70
60
SFDR
S/ (N+D)
TPC 1. S/(N+D) and SFDR vs.
Analog Input Level
INPUT FREQUENCY (kHz)
–85
–90
–115
020
100
40
60
80
–95
–100
–105
–110
THD
SNR
SFDR
VIN (+) = V IN(–) = 1.25V p-p
VCM = 2.5V
TPC 4. SNR, THD, and SFDR
vs. Input Frequency
TEMPERATURE ( C)
–94
–116
–50
–25
100
025
50
75
–96
–108
–110
–112
–114
–100
–102
–106
–104
–98
THD
3RD
4TH
2ND
TPC 7. THD vs. Temperature
OUTPUT DATA RATE (kSPS)
84
92
85
88
89
90
91
86
87
050
300
100
150
200
250
AIN = 1/5
BW
TPC 2. S/(N+D) vs. Output
Sample Rate
OUTPUT DATA RATE (kSPS)
84
92
85
88
89
90
91
86
87
050
300
100
150
200
250
AIN = 1/5
BW
VIN (+) = V IN (–) = 1.25V p-p
VCM = 2.5V
TPC 5. S/(N+D) vs. Output
Sample Rate
CODES
5000
0
n–3
n–2
n+3
n–1
n
n+1
n+2
4500
2000
1500
1000
500
4000
3500
2500
3000
VIN(+) = V IN(–)
CLKIN = 12.5MHz
8k SAMPLES
TPC 8. Histogram of Output
Codes with DC Input
INPUT FREQUENCY (kHz)
–85
–90
–115
020
100
40
60
80
–95
–100
–105
–110
SNR
SFDR
THD
TPC 3. SNR, THD, and SFDR
vs. Input Frequency
TEMPERATURE ( C)
92.0
91.5
88.0
–50
0
100
50
90.0
89.5
88.5
89.0
91.0
90.5
TPC 6. SNR vs. Temperature
CODE
1.0
0.8
–1.0
0
20000
65535
40000
–0.4
–0.8
–0.6
0
–0.2
0.6
0.2
0.4
TPC 9. Differential Nonlinearity



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