MC34001, B MC34002, B MC34004, B
Representative Circuit Schematic
(Each Amplifier)
Bias Circuitry
Common to All
Amplifiers
Output
V
CC
Q2
Q4
Q5
Q1
Q3
Q6
–
Inputs
+
J1
J2
2.0 k
Q17
Q20
Q22
J3
Q15
Q19
Q23
Q24
10 pF
24
Q14
Q10
Q21
Q12
Q13
Q16
Q8
Q25
Q9
Q11
Q7
Q18
1.5 k
Offset
Null
1.5 k
(MC34001 only)
V
EE
Figure 12. Output Current to Voltage Transformation
for a D–to–A Converter
V
CC
Settling time to within 1/2 LSB is approximately 4.0
from the time all bits are switched (C = 68 pF).
µs
R1
R2
MSB A1
A2
V
ref
The value of C may be selected to minimize overshoot
and ringing.
A3
A4
V
= 15 V
Theoretical V
O
CC
D–to–A
V
A1
2
A2
4
A3
8
A4
16
A5
32
A6
64
A7
128 256
A8
A5
A6
ref
1
V
=
(R
)
+
+
+
+
+
+
+
O
O
R1
+
–
A7
V
O
I
o
LSB A8
MC34001
15 pF
V
= –15 V
C
EE
V
EE
R
O
6
MOTOROLA ANALOG IC DEVICE DATA
ONSEMI [ ONSEMI ]
