Datasheet

LTC2486
12
2486fd
CS
SDO
SCK
SDI
t
1
t
3
t
7
t
8
SLEEP
t
KQMAX
CONVERSIONDATA IN/OUT
t
KQMIN
t
2
2486 TD01
Hi-ZHi-Z
CS
SDO
SCK
SDI
t
1
t
5
t
4
t
7
t
8
SLEEP
t
KQMAX
CONVERSIONDATA IN/OUT
t
KQMIN
t
2
2486 TD02
Hi-ZHi-Z
Timing Diagram Using Internal SCK (SCK HIGH with CS↓)
Timing Diagram Using External SCK (SCK LOW with CS↓)
FUNCTIONAL BLOCK DIAGRAM
TEST CIRCUITS
Figure 1. Functional Block Diagram
AUTOCALIBRATION
AND CONTROL
DIFFERENTIAL
3RD ORDER
Δ3 MODULATOR
DECIMATING FIR
ADDRESS
INTERNAL
OSCILLATOR
SERIAL
INTERFACE
GND
V
CC
CH0
CH1
CH2
CH3
COM
MUX
IN
+
IN
–
SDO
SCK
REF
+
REF
–
CS
SDI
f
O
(INT/EXT)
2486 F01
+
–
TEMP
SENSOR
1.69k
SDO
2486 TC01
Hi-Z TO V
OH
V
OL
TO V
OH
V
OH
TO Hi-Z
C
LOAD
= 20pF
1.69k
SDO
2486 TC02
Hi-Z TO V
OL
V
OH
TO V
OL
V
OL
TO Hi-Z
C
LOAD
= 20pF
V
CC
TIMING DIAGRAMS