Datasheet

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SBAS253E − MAY 2003 − REVISED JULY 2006
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9
1.8 BASIC CIRCUIT CONFIGURATION
ADS7869
A1p/n
IUp/n
AGND
AXp/n
AV
DD
AN3p/n
AN2p/n
SGND
AN1p/n
IWp/n
AV
DD
BXp/n
AGND
IVp/n
B1p/n
Data Bus
Read
Write
Chip Select
Address Bus
System Clock
Data Available
DATA
RD
WR
CS
ADDR
A2p/n
AV
DD
REFIN
REFOUT
AGND
A1
CNTA1
A2
CNTB1
HOLD1 HOLD2
AV
DD
DAV
AGND
M0 M1
RST
BV
DD
CLK
BGND
B2p/n AV
DD
DAOUT DAIN U_Cp/n V_Cp/n W_Cp/n AGND B1 CNTA2 B2 CNTB2 U_COMP V_COMP W_COMP U_ILIM V_ILIM W_ILIM BV
DD
INT BGND
Encoder
Counter2
Inputs
Interrupt
Comparator Outputs
0.1
µ
F
10
µ
F
+5V Analog Supply
Encoder
Counter1
Inputs
Convert Start Asynchronous Hold +5V Analog Supply Mode Select Asynchronous Reset
+2.7V to +5.5V
Digital Supply
0.1
µ
F
0.1
µ
F
0.1
µ
F
+
10
µ
F
0.1
µ
F
0.1
µ
F
10
µ
F
+2.7V to +5.5V
Digital Supply
+5V
Analog Supply
3 Differential
Inputs to
Comparators
+
+
+5V
Analog Supply
0.1
µ
F
+5V
Analog Supply
0.1
µ
F
0.1
µ
F