Avago Technologies ACPL-7210-00RE - Manual

EVBD-ACSL-7210 PROFIBUS / SPI Evaluation Board
ACSL-7210 Dual-Channel (Bidirectional) 25 MBd
CMOS Buffered Input Digital Optocoupler
User Guide
Product Description
Avago’s ACSL-7210 optocoupler utilizes the latest CMOS
IC technology to achieve outstanding speed and low
power performance of minimum 25 MBd data rate.
Available in SO-8 package, the basic building blocks of
each channel in ACSL-7210 are a CMOS LED driver IC, a
high speed LED and a CMOS detector IC. A CMOS logic
input signal controls the LED driver IC, which supplies cur-
rent to the LED. The detector IC incorporates an integrated
photodiode, a high speed trans-impedance amplifier, and
a voltage comparator with an output driver.
Functional Diagram
Features
• Dual-Channel (Opposite direction orientation)
• 3.3 V and 5 V CMOS Compatibility
• High Speed: DC to 25 MBd
• CMOS output and buffer input
• Operating temperature: –40°C to +105°C
• Safety and Regulatory Approvals:
- UL 1577 – 3750 Vrms for 1 minute
- IEC/EN/DIN EN 60747-5-5
About the Evaluation Board
The ACSL-7210 PROFIBUS / SPI evaluation board is con-
figurable for either PROFIBUS (RS-485) or SPI communica-
tion. The board will accept both 3.3V and 5V power sup-
plies.
When configured for PROFIBUS communication, the
ACSL-7210 bi-directional optocoupler provides isolation
for both the transmitting and receiving channels. Isolation
for the Tx Enable signal is provided by the ACPL-M61L, ul-
tra low power 10MBd CMOS digital optocoupler. A stan-
dard RS-485 transceiver (max. data rate of 20Mbps) is in-
cluded on the board.
For SPI interface, the ACSL-7210 is used for serial data in/
out isolation. Isolation for the clock signal is provided by
ACPL-077L, low power 25MBd CMOS digital optocoupler.
Figures 1 and 2 shows the jumper settings for PROFIBUS
and SPI operation. Figure 3 shows the schematic diagram
of the evaluation board.
ACSL-7210
8
5
6
VO
A
VDD
2
GND
2
VO
B
Shield
1 VDD
1
GND
1
4
7 VI
A
VI
B
3
2
TRUTH TABLE (POSITIVE LOGIC)
Input side
V
DD
state
Output side
V
DD
state V
I
LED V
O
Power
Supplied
Power
Supplied
HIGH OFF HIGH
LOW ON LOW
No Power Power
Supplied
X OFF HIGH