Philips pm2521 - Page 124

132
OQ0064 V-l
CONVERTOR
(ADC)
Specification
of inputs and outputs
Pin
no.
1
Name
PROT
n.c.
D1
Description
Protection input,
no connection
Drain input for
device 1
.
Range a conversion resistor
(input sensitivity
0,1V).
Source input for device
1
.
Range b conversion
resistor (input
sensitivity IV).
Current
output.
Current output
Range b conversion
resistor (input
sensitivity IV).
Source
input
for device 2.
Range
a
conversion
resistor (input
sensitivity
0,1V).
Drain
input for
device
2.
Negative
supply voltage.
Current input.
Current setting
resistor.
Adjustmen
Current reference
output.
Tc setting resistor.
Rp
determ
no connection
no
connection
Positive
supply voltage,
no connection.
Supply Zero
^
Range selecting input
(a or b).
Sin
So
Range selecting
reference input.
0 1
Adjustment reference
current.
Rp
determines
temperature
coefficient.
Sin
So Ra
Rb Sensitivity ADC
0 1
X
0,1V
1 1
X IV