TL431 Datasheet, PDF (9/16 Pages) Motorola, Inc – PROGRAMMABLE PRECISION REFERENCES

TL431, A, B Series
Figure 26. Voltage Monitor
V+
l
Vout
R1
R3
Figure 27. Single–Supply Comparator with
Temperature–Compensated Threshold
V+
R2
R4
L.E.D. indicator is ‘on’ when V+ is between the
upper and lower limits.
+ ǒ ) Ǔ Lower Limit 1
+ ǒ ) Ǔ Upper Limit 1
R1
R2
Vref
R3
R4
Vref
Vin
Vth = Vref
Vout
Vin
< Vref
> Vref
Vout
V+
≈ 2.0 V
Figure 28. Linear Ohmmeter
25 V
1N5305
2.0 mA
5.0 k 50 k
1% 1%
10 kΩ
V
1.0 kΩ
V
500 k 5.0 M
1% 1%
100 kΩ
V 1.0 MΩ
V
Range
10 k
Calibrate
25 V
–
LM11
+
Vout
RX
–5.0 V
+ ^W Rx Vout D _V Range
Figure 29. Simple 400 mW Phono Amplifier
Tl = 330 to 8.0 Ω
TI
8.0 Ω
*
* Thermalloy
* THM 6024
* Heatsink on
* LP Package
38 V
330
360 k
56 k
+
470 µF
1.0 µF
Volume
0.05 µF _{47 k}
Tone
10 k
25 k
MOTOROLA ANALOG IC DEVICE DATA
9