ADC0802 Intersil Corporation, ADC0802 Datasheet - Page 2

• Manufacturer Part Number: ADC0802
• Description: 8-Bit, Microprocessor-Compatible, A/D Converters
• Manufacturer: Intersil Corporation

Functional Diagram
V
V
(V
AGND
V
REF
IN
IN
REF
WR
RD
CS
(+)
V+
(-)
/2
)
CLK R
CLK IN
DGND
2
1
3
19
4
10
20
9
8
6
7
V+
CLK OSC
+
V
DAC
∑
OUT
-
2
CLK
GEN CLKS
CLK A
+
-
DECODER
LADDER
COMP
AND
MSB
G1
11
RESET
DIGITAL OUTPUTS
OUTPUT LATCHES
ADC0803, ADC0804
12
SET
THREE-STATE
START F/F
13
THREE-STATE CONTROL
“1” = OUTPUT ENABLE
14
15
16
Q
17
18
INPUT
“0” = BUSY AND RESET STATE
FOR ALL LOGIC INPUTS
“1” = RESET SHIFT REGISTER
LSB
INPUT PROTECTION
SUCCESSIVE
AND LATCH
REGISTER
APPROX.
BV = 30V
XFER
TO INTERNAL
CIRCUITS
CLK B
CLK A
G2
MSB
LSB
REGISTER
DFF2
SHIFT
8-BIT
Q
D
Q
CLK
CONV. COMPL.
DFF1
D
SET
R
Q
8 X 1/f
D
RESET
RESET
READ
CONVERSION
INTR F/F
IF RESET = “0”
START
Q
5
INTR