Data Sheet ADuM120N/ADuM121N
Rev. B | Page 9 of 19
ELECTRICAL CHARACTERISTICS—1.8 V OPERATION
All typical specifications are at T
A
= 25°C, V
DD1
= V
DD2
= 1.8 V. Minimum/maximum specifications apply over the entire recommended operation range: 1.7 V ≤ V
DD1
≤ 1.9
V, 1.7 V ≤ V
DD2
≤ 1.9 V, and −40°C ≤ T
A
≤ +125°C, unless otherwise noted. Switching specifications are tested with C
L
= 15 pF and CMOS signal levels, unless otherwise
noted. Supply currents are specified with 50% duty cycle signals.
Table 7.
Parameter Symbol Min Typ Max Unit Test Conditions/Comments
SWITCHING SPECIFICATIONS
Pulse Width PW 6.6 ns Within PWD limit
Data Rate 150 Mbps Within PWD limit
Propagation Delay t
PHL
, t
PLH
5.8 8.7 15 ns 50% input to 50% output
Pulse Width Distortion PWD 0.7 3 ns |t
PLH
− t
PHL
|
Change vs. Temperature 1.5 ps/°C
Propagation Delay Skew t
PSK
7.0 ns Between any two units at the same
temperature, voltage, and load
Channel Matching
Codirectional t
PSKCD
0.7 3.0 ns
Opposing Direction t
PSKOD
0.7 3.0 ns
Jitter 630 ps p-p See the Jitter Measurement section
190 ps rms See the Jitter Measurement section
DC SPECIFICATIONS
Input Threshold Voltage
Logic High V
IH
0.7 × V
DDx
V
Logic Low V
IL
0.3 × V
DDx
V
Logic High V
OH
V
DDx
− 0.1 V
DDx
V I
Ox
1
= −20 µA, V
Ix
= V
IxH
2
V
DDx
− 0.4 V
DDx
− 0.2 V I
Ox
1
= −2 mA, V
Ix
= V
IxH
2
Logic Low V
OL
0.0 0.1 V I
Ox
1
= 20 µA, V
Ix
= V
IxL
3
0.2 0.4 V I
Ox
1
= 2 mA, V
Ix
= V
IxL
3
Input Current per Channel I
I
−10 +0.01 +10 µA 0 V ≤ V
Ix
≤ V
DDx
Quiescent Supply Current
ADuM120N I
DD1 (Q)
0.7 1.2 mA V
I
4
= 0 (N0), 1 (N1)
5
I
DD2 (Q)
1.2 1.8 mA V
I
4
= 0 (N0), 1 (N1)
5
I
DD1 (Q)
6.2 9.6 mA V
I
4
= 1 (N0), 0 (N1)
5
I
DD2 (Q)
1.3 1.8 mA V
I
4
= 1 (N0), 0 (N1)
5
ADuM121N I
DD1 (Q)
1.0 1.5 mA V
I
4
= 0 (N0), 1 (N1)
5
I
DD2 (Q)
1.0 1.4 mA V
I
4
= 0 (N0), 1 (N1)
5
I
DD1 (Q)
3.8 5.8 mA V
I
4
= 1 (N0), 0 (N1)
5
I
DD2 (Q)
4.7 6.4 mA V
I
4
= 1 (N0), 0 (N1)
5
Dynamic Supply Current
Dynamic Input I
DDI (D)
0.01 mA/Mbps Inputs switching, 50% duty cycle
DDO (D)
Inputs switching, 50% duty cycle
Undervoltage Lockout UVLO
Positive V
DDx
Threshold V
DDxUV+
1.6 V
Negative V
DDx
Threshold V
DDxUV−
1.5 V
V
DDx
Hysteresis V
DDxUVH
0.1 V