CA3304A Intersil Corporation, CA3304A Datasheet - Page 5

• Manufacturer Part Number: CA3304A
• Description: 4-Bit / 25 MSPS / Flash A/D Converters
• Manufacturer: Intersil Corporation

Functional Diagram
†
NOTE: CE1 and CE2 inputs and data outputs have standard CMOS protection networks to V
standard CMOS protection networks to V
Timing Diagrams
CLOCK
V
V
Cascaded Auto Balance (CAB)
V
REF
REF
11
12
13
15
IN
+
-
1
1
/
/
2
2
B1 - B4, DC & OF
R
R
50k
BITS 1-4
R
R
R
R
DC, OF
CE1
CE2
CLOCK
2
OUTPUT REGISTERS
DATA SHIFTED INTO
1
1
0
1
0
†
CAB COMPARATOR #1
1 (AUTO BALANCE)
2 (SAMPLE UNKNOWN)
1
†
†
CAB #16
CAB #8
BALANCE
AUTO
AA
t
1
+ and V
HO
FIGURE 2. OUTPUT ENABLE/DISABLE TIMING
1
t
1
DIS
AA
SAMPLE 1
FIGURE 1. TIMING DIAGRAM
-.
t
LATCH
LATCH
LATCH
D
D
D
CA3304, CA3304A
D
16
8
0
2
IMPEDANCE
Q
Q
Q
COUNT
COUNT
COUNT
HIGH
16
8
1
V
DATA VALID 0
AA
10
BALANCE
4-11
+
AUTO
ENCODER
t
EN
ARRAY
LOGIC
V
V
14
AA
16
DD
COMPARATOR DATA
LATCHED
-
V
SAMPLE 2
8
SS
2
REGISTER
OUTPUT
D Q
CLK
D Q
CLK
D Q
CLK
D Q
CLK
D Q
CLK
D Q
CLK
DATA VALID 1
DD
BALANCE
AUTO
t
DIS
and V
SS
IMPEDANCE
IMPEDANCE
. Analog inputs and clock have
SAMPLE 3
HIGH
HIGH
THREE-STATE
DRIVERS
t
EN
DATA VALID 2
5
6
4
3
2
1
9
7
DATA
CHANGE
OVERFLOW
BIT 4
BIT 3
BIT 2
BIT 1 (LSB)
CE1
CE2