AD7722ASZ Analog Devices Inc, AD7722ASZ Datasheet - Page 13

• 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

REV. B
–100
–120
–140
–154
–154
–100
–120
–140
–20
–40
–60
–80
–20
–40
–60
–80
0
0
0
0
–0.4
–0.6
–0.8
–1.0
–0.2
1.0
0.8
0.6
0.4
0.2
0
0
10
TPC 10. Integral Nonlinearity Error
20
20
TPC 11. 16K Point FFT
TPC 12. 16K Point FFT
20000
30
FREQUENCY (kHz)
FREQUENCY (kHz)
40
40
CODE
50
40000
60
60
70
XTAL = 12.288MHz
SNR = 89.0dB
S/(N+D) = 87.8dB
SFDR = –94.3dB
THD = –93.8dB
2ND = –94.3dB
3RD = –108.5dB
4TH = –105.7dB
CLKIN = 12.5MHz
SNR = 90.1dB
S/(N+D) = 89.2dB
SFDR = –99.5dB
THD = –96.6dB
2ND = –100.9dB
3RD = –106.0dB
4TH = –99.5dB
80
80
65535
96
98
–13–
–100
–120
–140
–100
–120
–140
–154
–154
–20
–40
–60
–80
–20
–40
–60
–80
TPC 13. Power Consumption vs. CLKIN Frequency
0
0
0
0
200
180
160
140
120
100
80
60
40
20
0
0
AIN = 90kHz
XTAL = 12.288MHz
SNR = 88.1dB
S/(N+D) = 88.1dB
SFDR = –103.7dB
AIN = 90kHz
CLKIN = 12.5 MHz
SNR = 89.6dB
S/(N+D) = 89.6dB
SFDR = –108.0dB
2.5
20
20
TPC 14. 16K Point FFT
TPC 15. 16K Point FFT
CLKIN FREQUENCY (MHz)
5.0
FREQUENCY (kHz)
FREQUENCY (kHz)
40
40
7.5
DI
DD
AI
DD
10.0
60
60
AD7722
12.5
80
80
15.0
96
98