AD7722ASZ Analog Devices Inc, AD7722ASZ Datasheet - Page 6

• 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
Figure 4. Serial Mode Timing for Frame Sync Input, Frame Sync Output, Serial Clock Output,
and Serial Data Output (CFMT = Logic Low, TSI = DOE)
SFMT = LOGIC
SFMT = LOGIC
Figure 3. Serial Mode Timing for Clock Input, Frame Sync Input, and Serial Clock Output
(CFMT = 0)
(SFMT = 1)
(CFMT = 0)
(SFMT = 0)
HIGH(1)
CLKIN
LOW(0)
Figure 2a. Generalized Serial Mode Timing (FSI = Logic Low or High, TSI = DOE)
Figure 2b. Generalized Serial Mode Timing (FSI = Logic Low or High, TSI = DOE)
SCO
CLKIN
CLKIN
FSI
SCO
SCO
SCO
FSO
SCO
FSO
CLKIN
SCO
FSO
SDO
SCO
FSO
SDO
FSI
2.3V
LOW FOR
D15–D0
t
9
t
5
t
14
t
t
1
t
1
t
6
0.8V
12
D15
t
13
VALID DATA FOR 16 SCO CYCLES
VALID DATA FOR 16 SCO CYCLES
t
11
LOW FOR 16 SCO CYCLES
t
13
t
9
D14
t
10
t
t
D15
4
12
64 CKLIN CYCLES
32 SCO CYCLES
64 CKLIN CYCLES
32 SCO CYCLES
t
D13
10
–6–
D14
t
7
t
8
D13
ZERO FOR LAST 16 SCO CYCLES
ZERO FOR LAST 16 SCO CYCLES
HIGH FOR LAST 16 SCO CYCLES
D1
t
3
D0
t
11
t
2
D1
D0
VALID
VALID
REV. B