datasheet for PC5 by US Digital

datasheet for PC5 by US Digital
PC5
HP Compatible Incremental Encoder Cable Driver
Page 1 of 4
Description
The TTL outputs of some incremental encoders can sink (pull down) less than
4mA and source (pull up) less than 200uA. The PC5 is a small, plug-in RS-422
cable driver board that drives long cables up to 1000 feet using differential
signalling to provide improved noise immunity. The PC5 can be used with the
E2, E3, H1, H3, S1 and S2 encoders. Each board has a 5-pin socket designed to
plug into the 5 pins of the encoder. An on-board 0.1uF bypass capacitor across
the power pins on each of these boards compensates for inductance and noise
which can be expected at the end of a long cable.
The output side of the PC5 is a 10 pin finger-latching connector with an Avago /
Agilent / HP compatible pinout (HEDL series). An optional terminating resistor
with a value as low as 270
may be placed across each pair on the receiver
side of the cable to match the cable's characteristic impedance. When
calculating the power requirements of the encoder side of the cable, include the
current consumed by the module, the driver IC and any terminating resistors. Be
sure to supply sufficient voltage to compensate for the voltage drop across the
power and ground wires (round trip). The typical cable resistance for 28 AWG
wire is 65 ohms per 1000 feet. If an RS-422 receiver chip, such as 26C32, is
used on the receiver side of the cable, we recommend a 0.1uF ceramic
monolithic bypass capacitor across +5V and ground located within 1 inch of the
receiver chip.
Features
Avago / HP HEDL compatible output
Mechanical Drawing
Rev. 120925081256
PC5
HP Compatible Incremental Encoder Cable Driver
Page 2 of 4
Mechanical
The cable drivers shown below are compatible only with the E2, E3, H1, H3, S1 and S2.
PC5 Differential cable driver board. (shown mounted on an S1 encoder).
Electrical Characteristics
Parameter
Min.
Typ.
Max.
Units
Notes
Supply Voltage (PWR)
4.5
-
5.5
Volts
-
Supply Current (26C31)
-
1
2
mA
-
Output High Voltage
2.5
-
-
Volts
IOH = 20 mA
Output Low Voltage
-
-
0.8
Volts
IOL = 20 mA
Propagation Time
-
-
15
ns
-
Absolute Maximum Ratings
Parameter
Min.
Max.
Units
Storage Temperature
-40
100
C
Operating Temperature
-40
100
C
Connectors
Product
Driver Header
Connector Mates With
PC5-H10
AMP# 103309-1
CON-C10*
* US Digital part number. For more information see the Cables / Connectors page.
Rev. 120925081256
PC5
HP Compatible Incremental Encoder Cable Driver
Page 3 of 4
Pin-outs
PC5-H10 Avago / Agilent / HP Compatible Output
Pin
Description
1
No connection
2
+5VDC power
3
Ground
4
No connection
5
A- channel
6
A+ channel
7
B- channel
8
B+ channel
9
Index-
10
Index+
Note:For implementations with long cables the supply voltage at the host should be appropriately higher to compensate for voltage
losses in the wires. Consider the power requirement of the encoder, the PC5 module and the optional termination resistors.
Rev. 120925081256
PC5
HP Compatible Incremental Encoder Cable Driver
Page 4 of 4
Ordering Information
PC5 Notes
Connector
Cables and connectors are not included and
must be ordered separately.
US Digital warrants its products against defects
in materials and workmanship for two years.
See complete warranty for details.
H10 =
Base Pricing
Quantity
Price
1
$15.70
10
$14.19
For volume discounts, please contact us at [email protected] or 800.736.0194.
Rev. 120925081256
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