Features: * Full duplex serial transmission over single/twin fiber.
* Link lengths up to 25km.
* Supports asynchronous data rates from DC to 162kbps.
* Full diagnostic modes - Remote and Local loopback.
* Ultra low power consumption, typically 2-3mA, which could be extracted from the RS-232 port for self powered applications.
* Uses a single Ping Pong LED or Laser Duplex Device for single fiber applications, low cost LED/PIN or Laser/PIN combinations for twin fiber applications.
* Additional operating mode to support PIN with integrated TIA.
* Bit Error Rate (BER) < 10-9
* Available in 44 pin TQFP (part no: ACS102A-TQ) and 44 pin PLCC (part no: ACS102A-PL) packages.
SpecificationsThe "Absolute Maximum Ratings" are stress ratings only, and functional operation of the device at conditions other than those indicated in the "Operating Conditions" sections of this specification are not implied. Exposure to the absolute maximum ratings for an extended period may reduce the reliability or useful lifetime of the product.
|
Parameter |
Symbol |
Min |
Max |
Units |
Power supply VD+ and VA+
(VDD = VD+ or VA+) |
VDD |
-0.3 |
6.0 |
V |
| Input voltage (non-supply pins) |
Vin |
GND-0.3 |
VDD+0.3 |
V |
Input current
(except LAN,LAP,PINN,PINP,CNT) |
Iin |
- |
10.0 |
mA |
| Input current ( LAN,LAP,PINN,PINP,CNT) |
Iin |
- |
1.0 |
mA |
| Storage Temperature |
Tstor |
-50 |
+160 |
|
DescriptionThe ACS102A is a complete controller, driver and receiver IC, supporting fullduplex asynchronous transmission from DC to 162kbps over a single serial link.Although primarily designed for single optical fibre applications, any other simple serial media may be used. The ACS102A is optimised for very low power consumption, consuming only 2 - 3mA at RS-232 data rates including power provided to the LED and 'heartbeat' monitor. In applications where the power is
extracted from the RS232 data lines, this leaves a generous amount of power left for any power extraction and RS-232 level shifting circuitry.
The ACS102A employs data compression and time compression techniques,affording high launch power in short bursts, leading to a low average power consumption. The advantage of this approach is that high link budgets can be
achieved with inexpensive optical components.
For example, the recommended set-up for RS-232 applications (19.2kbps +handshake signals) assumes that the LED is driven with a peak current of approximately 15.4mA for 6 % of the time. The machine cycle of ACS102A is short enough to facilitate power supply smoothing with a small external capacitor in the region of 100F.
ACS102A Data Sheet
