MC34071,2,4,A MC33071,2,4,A
Figure 43. Low Voltage Fast D/A Converter
CF
2.0 V
Vin
VO
VCC
1.0 V
Bit
Switches
(R–2R) Ladder Network
Settling Time
1.0
µs
(8–Bits, 1/2 LSB)
0.1
Delay
1.0
µs
t
+
MC34071
Figure 44. High Speed Low Voltage Comparator
Vin
RF
5.0 k
5.0 k
5.0 k
–
MC34071
VO
t
VO
4.0 V
13 V/µs
0.2
µs
Delay
25 V/µs
2.0 k
RL
–
10 k
10 k
10 k
+
Figure 45. LED Driver
VCC
“ON”
Vin < Vref
Figure 46. Transistor Driver
VCC
VCC
RL
Vin
Vref
+
MC34071
+
MC34071
+
MC34071
–
–
RL
“ON”
Vin > Vref
(A) PNP
–
(B) NPN
Figure 47. AC/DC Ground Current Monitor
Figure 48. Photovoltaic Cell Amplifier
ILoad
RF
+
MC34071
ICell
VO
–
MC34071
VO
–
Ground Current
Sense Resistor
RS
R1
R2
VO = ILoad RS
+
1+
R1
R2
VCell = 0 V
For VO > 0.1V
BW ( –3.0 dB) = GBW
R2
R1+R2
VO = ICell RF
VO > 0.1 V
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