AD7262 查看數據表（PDF） - Analog Devices
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AD7262 Datasheet PDF : 33 Pages
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Data Sheet
+5V
ANALOG
SUPPLY
10µF1 100nF
100nF
100nF
100nF
100nF
100nF
100nF
10µF1
COMPARATOR
SUPPLY 3V TO 5V2
17 44 5 6 8 19 42 28 2 7 11 20 41 12 1 33
100nF
AD7262
3.125V
VA– AND VA+
CONNECT
DIRECTLY
TO SENSOR
OUTPUTS
2.500V
1.875V
3.125V
2.500V
1.875V
GAIN 2
GAIN 2
THIS REFERENCE SIGNAL
MUST BE BUFFERED
BEFORE IT CAN BE
USED ELSEWHERE IN
THE CIRCUIT
3.125V
VB– AND VB+
CONNECT
DIRECTLY
TO SENSOR
OUTPUTS
2.500V
1.875V
3.125V
2.500V
1.875V
GAIN 2
GAIN 2
3 VA–
4 VA+
43 VREFA
1µF
18
VREFB
1µF
9
VB+
10 VB–
13 14 15 16
AD7262
VDRIVE 27
40
G0
G1 39
G2 38
G3 37
VDRIVE
VDRIVE
GAIN 2
SETUP
100nF
3V OR 5V
SUPPLY
10µF1
34
SCLK
35
CS
DOUTA 32
DOUTB 31
REFSEL 24
CAL 36
SERIAL
INTERFACE
VDRIVE
MICROPROCESSOR/
MICROCONTROLLER
23
PD0/DIN
PD1 22
PD2 21
VDRIVE
VDRIVE
BOTH
COMPARATORS
AND ADCs
POWERED ON
45 46 47 48 25 26 29 30
FAST PROPAGATION DELAY
LOW POWER
COMPARATOR INPUTS COMPARATOR INPUTS
1THESE CAPACITORS ARE PLACED AT THE SUPPLY SOURCE AND MAY NOT BE REQUIRED IN ALL SYSTEMS.
2THIS SUPPLY CAN BE CONNECTED TO THE ANALOG 5V SUPPLY IF REQUIRED.
Figure 27. Typical Connection Diagram for the AD7262/AD7262-5 in Pin-Driven Mode with Gain of 2 and Both ADCs and Comparators Fully Powered On
Rev. B | Page 19 of 32
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