7
CLOCK
8 DATA BITS
+5V
15
16
14
8
1-7, 9
LE
D0 - D7
VDD
COMP
VSS
CA3338
VOUT
VREF+
VEE
12
13
11
10
+5V
+2.5V
-2.5V
R1
R2
PROBE TIP
REMOTE
VOUT
R3
VREF-
OR BNC
CONNECTOR
DIGITAL
GROUND
ANALOG
GROUND
+
FIGURE 5. CA3338 DYNAMIC TEST CIRCUIT
FUNCTION
CONNECTOR
R1
R2
R3
VOUT (P-P)
Oscilloscope Display
Probe Tip
82
62
N/C
1V
Match 93
Cable
BNC
75
160
93
1V
Match 75
Cable
BNC
18
130
75
1V
Match 50
Cable
BNC
Short
75
50
0 79V
NOTES:
3. VOUT(P-P) is approximate, and will vary as ROUT of D/A varies.
4. All drawn capacitors are 0.1
F multilayer ceramic/4.7F tantalum.
5. Dashed connections are for unipolar operation. Solid connection are for bipolar operation.
NOTES:
1. Both VREF+ pin and 392 resistor should be
bypassed within 1/4 inch.
2. Keep nodal capacitance at CA3450 pin 3 as
low as possible.
3. VOUT Range = ±3V at CA3450.
CLOCK
8 DATA
+5V
15
16
14
8
1-7, 9
LE
D0 - D7
VDD
COMP
VSS
CA3338
VOUT
VREF+
VEE
12
13
11
10
R
VREF-
R
11
UP TO 5 OUTPUT LINES
FOR R = 75
, 3 LINES
FOR R = 50
VOUT1
VOUTN
+3.00V AT 25mA
4.7
F
TAN
4.
7
F
T
A
N
4.7
F TAN
4.7
F
TAN
0.
1
F
CER
.
0.1
F
CER.
0.1
F
CER.
0.1
F CER.
14
+6V
-6V
392
392
1%
10k
1k
3
4, 5, 12, 13
R
+
VOUT = ±1.5VPEAK
6
7, 8
9
+
-
CA3450
ADJUST
OFFSET
5pF
BITS
1%
FIGURE 6. CA3338 AND CA3450 FOR DRIVING MULTIPLE COAXIAL LINES
CA3338, CA3338A