
LTC2492
12
2492fd
FUNCTIONAL BLOCK DIAGRAM
TEST CIRCUITS
AUTOCALIBRATION
AND CONTROL
DIFFERENTIAL
3RD ORDER
Δ∑ MODULATOR
DECIMATING FIR
ADDRESS
INTERNAL
OSCILLATOR
SERIAL
INTERFACE
GND
VCC
CH0
CH1
CH2
CH3
COM
MUX
IN+
IN–
SDO
SCK
REF+
REF–
CS
SDI
fO
(INT/EXT)
2492 BD
+
–
TEMP
SENSOR
1.69k
SDO
2492 TC01
Hi-Z TO VOH
VOL TO VOH
VOH TO Hi-Z
CLOAD = 20pF
1.69k
SDO
2492 TC02
Hi-Z TO VOL
VOH TO VOL
VOL TO Hi-Z
CLOAD = 20pF
VCC
Figure 1. Functional Block Diagram