EPC130 EPC [Espros Photonics corp], EPC130 Datasheet - Page 5

• Manufacturer Part Number: EPC130
• Description: Photo-receiver Amplifier
• Manufacturer: EPC [Espros Photonics corp]

Functional Description
Power-up Sequence
If V
light on the photo diode flows into the pin PD. After the time tINIT, the device is ready to receive AC light pulses.
Power-down Sequence
When VDD goes down, the device is turned off when V
Light Pulse Reception
A light pulse on the photo diode generates a current puls into the pin PD of the device. This current pulse is transformed to a voltage pulse
and amplified. The signal form is dependent on the input pulse width, its slew rate and its strength. The value of the undershoot is als heavily
dependent on the input signal. If the input signal is too strong, the output signal becomes saturated close to V
After a waiting time given by t
© 2011 ESPROS Photonics Corporation
Characteristics subject to change without notice
DD
reaches V
IR LED Pulse
POR
Out Signal
PD Signal
, the startup sequence is initiated. After the time t
Startup
REC
Period
PD bias
, the next light pulse can be sent. If the waiting time is too short, the output signal of the next pulse is biased.
Out
V
V
V
DD
V
PK
OF
DD
T
T
IR LED
PD
t
OFF
V
POR
V
POR -
DD
is below V
V
Power-down sequence
IPOR
Light pulse reception
Power-up sequence
POR
t
REC
DEL
minus V
t
, the photo diode bias circuit is enabled. Thus, a current generated by
5
INIT
IPOR
.
undefined output signal
Ready
DD
Datasheet epc13x analog - V2.1
, or VSS respectively.
epc130/epc131
www.espros.ch