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Número de pieza | TCA965 | |
Descripción | Window Discriminator | |
Fabricantes | Siemens Semiconductor | |
Logotipo | ||
Hay una vista previa y un enlace de descarga de TCA965 (archivo pdf) en la parte inferior de esta página. Total 17 Páginas | ||
No Preview Available ! Window Discriminator
Preliminary
Features
q Two window settings
– direct setting of lower and upper edge
voltage (window edges)
– indirect setting by window center
voltage and half window width
q Adjustable hysteresis
q Digital outputs with open collectors
for currents up to 50 mA
q Adjustable reference voltage VStab
TCA 965 B
Bipolar IC
P-DIP-14-1
Type
s TCA 965 B
s Not for new design
Ordering Code
Q67000-A8338
Package
P-DIP-14-1
The window discriminator compares an input voltage to a defined voltage window. The
digital outputs show whether the input voltage is below, within or above this window.
The TCA 965 B window discriminator is especially suitable as a tracking or
compensating controller with a dead band in control engineering and for the selection of
DC voltages within a certain tolerance of the required setpoint value in measurement
engineering. When it is used as a Schmitt trigger, switching frequencies up to a typical
value of 50 kHz are possible.
Semiconductor Group
1
1998-02-10
1 page TCA 965 B
Characteristics
VS = 10 V; TA = 25 °C
Parameter
Symbol
Limit Values Unit Test
Test
min. typ. max.
Condition Circuit
Current consumption
Input current
(pins 6, 7, 8)
Input current, pin 9
IS
II
– II
– 5 7 mA
– 20 50 nA
– 400 3000 nA
Input offset voltage in
direct setting of window VIO
Input offset voltage in
indirect setting of window VIO
Input-voltage range on
pins 6, 7, 8
Input-voltage range on
VI
pin 9
Differential input voltage
VI
V6 – (V8 – V9)
(V8 + V9) – V7
– 20
– 50
1.5
50
20 mV
50 mV
VS – 1 V
VS/2 mV
13 V
13 V
V2, V13 = VQH 1
1
1
1
2
∆VI < 13 V 1
2
Reference voltage
Stabilized voltage on
pin 10
TC of reference voltage
Sensitivity of reference
voltage to supply-voltage
variation
V5
V10
αV5
∆V5/∆VS
2.8 3 3.2
5.5 6 6.5
0.4
V IREF = 0
V VS > 7.9 V
mV/K
2 mV/V
Output reverse current IQH
Output saturation voltage VQL
Hysteresis of window
edges
Inhibit threshold
Inhibit current
Switching frequency
VU – VL
V4, 12
I4, 12
fdir
find
– – 10 µA –
–
100 200 mV IQ = 10 mA 1
500 800 mV IQ = 50 mA
18 22 35 mV
1 1.8 V
– – 100 –
µA –
–
– 20 –
– 50 –
kHz –
kHz –
1
2
Semiconductor Group
5
1998-02-10
5 Page TCA 965 B
V8
Upper V6
Edge
Lower V7
Edge
tL
tU t
A
B
C
Pin 4 on GND
A
B
C
D
Pin 12 on GND
A
B
C
D
Inhibit A
1.8 V < Pin 4 < 7 V
1
0A
B
C
D
Inhibit B
1.8 V < Pin 12 < 7 V
A
1
0B
C
D
tL
D
tU tL
Application Circuit 1
Direct Setting of Lower and Upper Edge Voltages
Semiconductor Group
11
1
0
1
0
1
0
1
0
1
0
1
0
IES00295
tU
1998-02-10
11 Page |
Páginas | Total 17 Páginas | |
PDF Descargar | [ Datasheet TCA965.PDF ] |
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