IC-NE Datasheet, PDF (6/9 Pages) IC-Haus GmbH – LIGHT-GRID PULSE RECEIVER

iC-NE
LIGHT-GRID PULSE RECEIVER
Rev E1, Page 6/9
I(PD)
I(PD)pk
2
I(PD)pk
tr
I(SP)
−I(SN)
Ipnpk
t
t whi
t wpk
tf
Offset (= IO*ISUM)
t
may be positive or negative
Figure 3: Differential output current
pulse at SP and SN versus
input current pulse at PD
CLK
DIN
Q1
Q2
Q3
DOUT
EN1
INH= Q1
I(PD)
V(SP)
V(SN)
1st
2nd
t en
t inh
t p ^{( )} IDCon
t wlo
t whi
t p ^{( )} IDCoff
Figure 4: Timing characteristics (analogue section), outputs SP and
SN with resistors to VDD
VDD
5V
RA
100kΩ
CA
10uF
1 DIN
2 VDD
INH EN
I(PD)dc
PD
8
RGen
uA
adjust VS for I(PD)dc= −15uA
GND ⁷
500kΩ
mA ISUM
VRR
4V+RL*ISUM/2
VS
approx. −6V
adjust until ISUM stops rising
3
6
CLK
DOUT
RL
RL
Differential
4 SP
SN 5
1kΩ 1kΩ
Amplifier
−
R1
C2
iC−NE
+
Gain=10
BW= 10MHz
110Ω
330pF
C1
1.2nF
R2
10kΩ
V RMS−
Voltmeter
Figure 5: Noise measurement circuit
OPERATING REQUIREMENTS: Logic
Operating Conditions: VDD = 5 V ±10%, Ta = 0...70 °C, CL() = 50 pF,
input levels lo = 0...0.45 V, hi = VDD − 0.45 V...VDD, see Fig. 1 for reference levels and waveforms
Item Symbol Parameter
No.
Conditions
I001 ten
Activation Time:
DIN lo → hi to CLK lo → hi
Standby to amplifier operation (see Fig. 4)
I002 tinh
Output Activation Time:
1^st CLK lo → hi until output ready to
report
Sufficient decay of transient differential output
current: |I(SN) − I(SP) − IO ∗ ISUM| ≤ 20 µA
(see Fig. 4)
I003 tset
Setup time:
DIN stable before CLK lo → hi
(see Fig. 2)
I004 thold
Hold time:
DIN stable after CLK lo → hi
(see Fig. 2)
I005 fo
Permissible Frequency at CLK
Min.
10
5
50
50
Unit
Max.
µs
µs
ns
ns
10
MHz