mc33004b ON Semiconductor, mc33004b Datasheet - Page 7

• Manufacturer Part Number: mc33004b
• Description: Jfet Input Operational Amplifiers
• Manufacturer: ON Semiconductor

Run
MOTOROLA ANALOG IC DEVICE DATA
V R
Time (t) = R4 Cn (V R /V R –V I ), R 3 = R 4 , R 5 = 0.1 R 6
Design Example: 100 Second Timer
V R = 10 V
R6 = 20 k
If R1 = R2: t = 0.693 R4C
Figure 14. Long Interval RC Timer
R4
Clear
R1
R5 = 2.0 k
C = l.0 F
V1
R2
R1 = R2 = 1.0 k
V in
Reset
R3 = R4 = 144 M
C*
R5
R3
2
3
Power BW: f max =
Parasitic input capacitance (C1
interacts with feedback elements and creates undesirable high–frequency pole.
To compensate add C2 such that: R2C2
–
+
–15 V
*Polycarbonate or
7
Polystyrene Capacitor
2
3
MC34001, B MC34002, B MC34004, B
V in
4
+15 V
MC34001
MC34002
–
+
8
4
1/2
6
Network
or Relay
R1
Reset
V CC
V EE
Figure 13. Positive Peak Detector
C1
R6
Figure 16. Wide BW, Low Noise,
2 Vp
S r
1N914
D1
^
Low Drift Amplifier
2
^
240 kHz
3
7
3.0 pF plus any additional layout capacitance)
C2
R2
V CC
*
1 F
8
^
4
V EE
R1C1.
MC34001
6
+2.0 V
–2.0 V
f max
10 V
–10 V
*Polycarbonate capacitor
D1 = Hi–speed, low–reverse leakage diode
0
Figure 15. Isolating Large Capacitive Loads
^
Overshoot
t s = 10 s
When driving large C L , the V O slew rate is determined by C L
and I O(max) :
240 kHz
6
5
V O
t
MC34002
–
+
=
1/2
R1 5.1 k 2
t
MC34001
C L
I O
10%
=
7
0.02
0.5
3
+
–
V/ s = 0.04 V/ s (with C L shown)
V EE
V CC
7
4
V O
6
R L 5.1 k
R3 10
C C
R2 5.1 k
20 pF
I O
C L 0.5 F
V O
7