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