![](http://datasheet.mmic.net.cn/Exar-Corporation/XRD9818ACGTR_datasheet_102207/XRD9818ACGTR_8.png)
XRD9818
xr
3-CHANNEL 16-BIT LINEAR CCD/CIS SENSOR SIGNAL PROCESSOR
REV. 1.0.1
8
ELECTRICAL CHARACTERISTICS (CONTINUED) - XRD9818
AVDD=DVDD=3.3V, ADCLK=12MHZ, PGA GAIN=MIN, PIXEL RATE=4MHZ, TA=25C UNLESS OTHERWISE SPECIFIED
Parameter
Symbol
Min
Typ
Max
Unit
Conditions
SERIAL PORT WRITE TIMING SPECIFICATIONS
Data Setup Time
Tds
10
ns
Data Hold Time
Tdh
10
ns
Load Setup Time
Tls
10
∞
ns
Load Hold Time
Tlh
10
ns
SCLK Period
Tsclk
125
ns
Load Pulse High Period
Tlpw
125
ns
1 SCLK period
Parameter
Symbol
Min
Typ
Max
Unit
Conditions
TIMING SPECIFICATIONS
ADCLK Duty Cycle
daclk
50
%
ADCLK Period
tcp3b
tcp3n
tcp2b
tcp2n
tcp1b
tcp1n
83.3
41.7
83.3
41.7
125
62.5
ns
3-CH, 8bit (byte) output
3-CH, 4bit (nibble) output
2-CH, 8bit (byte) output
2-CH, 4bit (nibble) output
1-CH, 8bit (byte) output
1-CH, 4bit (nibble) output
Conversion Period
tcr3
tcr2
tcr1
250
167
125
ns
3-Channel Mode
2-Channel Mode
1-Channel Mode
BSAMP Pulse Width
tpwb
15
30
ns
VSAMP Pulse Width
tpwv
15
30
ns
VSAMP
↓ edge delay
from rising ADCLK
tvfcr
12
ns
Settling time
tstl
15
ns
Aperture Delay
tap
3
ns
Output Delay
todv
12
ns
Latency
lat
9
18
ADCLK
cycles
B/N=0 (byte mode)
B/N=1 (nibble mode)