LTC2309
FUNCTIONAL BLOCK DIAGRAM
AV
DV
DD
DD
LTC2309
CH0
CH1
CH2
CH3
CH4
CH5
CH6
CH7
COM
AD1
AD0
ANALOG
INPUT
MUX
SCL
SDA
+
–
2
12-BIT
SAR ADC
I C
PORT
V
REF
8k
INTERNAL
2.5V REF
GAIN = 1.6384x
REFCOMP
2308 BD
GND
TIMING DIAGRAM
2
Definition of Timing for Fast/Standard Mode Devices on the I C Bus
SDA
SCL
t
t
SU(DAT)
t
t
BUF
r
LOW
HD(SDA)
t
f
t
t
SP
t
t
f
r
t
t
t
SU(STO)
HD(SDA)
SU(STA)
t
t
HIGH
S
Sr
P
S
HD(DAT)
2309 TD
S = START, Sr = REPEATED START, P = STOP
2309f
8