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