TC3402 Datasheet, PDF (2/16 Pages) Microchip Technology – +1.8 Low Power, Quad Input, 16-Bit Sigma-Delta A/D Converter

TC3402
Typical Application
+
_
IN1+ ^VDD
IN1-
+
_
IN2+
IN2-
SDAT
SCLK
+
IN3+
A0
IN3-
A1
+
_
IN4+
IN4-
TC3402
V_BATT
I/01 ^VCC
I/02
I/03
I/04
µ
Controller
C1
0.1µF
REF_IN
REF_OUT
R3
390
Functional Block Diagram
V_DD
IN1+
IN1-
IN2+
IN2-
IN3+
IN3-
IN4+
IN4-
A0
+
1.193V
–
x2
+
–
1 of 4
AMux
+
–
Σ–∆
Modulator
Data
Shift
Reg.
+
–
SET
DQ
CLR
Start
Conv.
Clock Generator
and Control
Circuitry
SET
A1
DQ
CLR
TC3402
GND
REF_OUT
REFIN
SDAT
SCLK
DS21411B-page 2
© 2002 Microchip Technology Inc.