AD9937KCP Analog Devices Inc, AD9937KCP Datasheet - Page 41

• Manufacturer Part Number: AD9937KCP
• Manufacturer: Analog Devices Inc

Specifications of AD9937KCP

• Analog Front End Type: CCD
• Analog Front End Category: Video
• Interface Type: Serial (3-Wire)
• Input Voltage Range: 0.5V
• Operating Supply Voltage (min): 2.7V
• Operating Supply Voltage (typ): 3V
• Operating Supply Voltage (max): 3.6V
• Resolution: 10b
• Number Of Adc's: 1
• Power Supply Type: Analog/Digital
• Operating Temp Range: -25C to 85C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 56
• Package Type: LFCSP EP
• Number Of Channels: 1
• Lead Free Status / RoHS Status: Not Compliant

POWER-DOWN SEQUENCE
The following sequence is recommended when AD9937 is being
powered down. (Refer to Figure 39 for each step.)
1. Write a 0 to the OUTCONT_REG register (addr 0x01).
REV. 0
OUTPUT
SIGNAL
VCKM
DATA
(INTERNAL)
(REGISTER)
(REGISTER)
CCD
SHD
SHP
AFE_STBY
OUTCONT
DIG_STBY
(OUTPUT)
(OUTPUT)
OUTPUTS
DIGITAL
WRITES
(INPUT)
SERIAL
VCKM
VCLK
t
NOTES
1. RECOMMENDED PLACEMENT FOR VCKM RISING EDGE IS BETWEEN THE SHD RISING EDGE AND NEXT SHP FALLING EDGE.
2. CCD SIGNAL IS SAMPLED AT SHP AND SHD RISING EDGES.
3. OUTPUT DATA LATENCY IS NINE VCKM CYCLES.
t
S1
ID
VDD
HD
VD
N – 10
t
OD
N
CYCLE 1
t
ID
ODD FIELD
N – 9
t
S2
N + 1
CYCLE 2
N – 8
t
CP
N + 2
Figure 39. Recommended Power-Down Sequence
CYCLE 3
N – 7
N + 3
EVEN FIELD
CYCLE 4
Figure 40. Pipeline Latency
N – 6
N + 4
CYCLE 5
N – 5
–41–
N + 5
2. Write a 0 to the DIG_STBY and AFE_STBY registers
3. Stop VCKM clock.
4. Turn off power supplies to AD9937.
CYCLE 6
(addr 0x02). This will put the digital and analog circuits into
the standby operating mode.
N – 4
ODD FIELD
N + 6
CYCLE 7
N – 3
N + 7
CYCLE 8
V1A/B, V2, V3A/B, V4, TG1A, TG1B, TG3A, TG3B,
OFD, H1(A, B, C, D)
RS, H2(A, B), LM
N – 2
N + 8
CYCLE 9
N – 1
N + 9
N
AD9937
N + 10
3
4
N + 11