AD7722ASZ Analog Devices Inc, AD7722ASZ Datasheet - Page 12

• Manufacturer Part Number: AD7722ASZ
• Description: ADC Single Delta-Sigma 195KSPS 16-Bit Parallel/Serial 44-Pin MQFP
• Manufacturer: Analog Devices Inc

Specifications of AD7722ASZ

• Package: 44MQFP
• Resolution: 16 Bit
• Sampling Rate: 195 KSPS
• Architecture: Delta-Sigma
• Number Of Analog Inputs: 1
• Digital Interface Type: Parallel|Serial (3-Wire)
• Input Type: Voltage
• Polarity Of Input Voltage: Unipolar|Bipolar
• Number Of Bits: 16
• Sampling Rate (per Second): 220k
• Data Interface: Serial, Parallel
• Number Of Converters: 1
• Power Dissipation (max): 375mW
• Voltage Supply Source: Analog and Digital
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 44-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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