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PRL-350 Series Comparators Specifications
|
(0° C
≤ TA
≤ 35° C)*
|
| Unless otherwise specified, dynamic measurements are made with all outputs
terminated into 50 Ω/VTT, where VTT
= -2 V for ECL outputs and 0 V for TTL outputs.
|
|
Symbol
|
Parameter
|
PRL-350ECL |
PRL-350TTL |
Unit
|
|
Min |
Typ |
Max |
Min |
Typ |
Max |
|
RIN |
Input Resistance |
49.5 |
50 |
50.5 |
49.5 |
50 |
50.5 |
Ω |
|
ROUT |
Output Resistance |
NPN emitter |
49.5 |
50 |
50.5 |
Ω |
|
VTH+ |
Preset positive threshold voltage |
45 |
50 |
55 |
45 |
50 |
55 |
mV |
|
VTH- |
Preset negative threshold voltage |
-55 |
-50 |
-45 |
-55 |
-50 |
-45 |
mV |
|
VTH0 |
Preset zero threshold voltage(1) |
-2 |
0 |
2 |
-2 |
0 |
2 |
mV |
|
VOL |
Output Low Level |
-2 |
-1.6 |
-1.5 |
-0.5 |
0 |
0.5 |
V |
|
VOH |
Output High Level |
-1 |
-0.8 |
-0.6 |
2 |
2.2 |
2.4 |
V |
|
IDC |
DC Input Current |
|
36/
-136 |
45/
-145 |
|
300/
-285 |
325/
-300 |
mA |
|
VDC |
DC Input Voltage |
±7.5 |
±8.5 |
±12 |
±7.5 |
±8.5 |
±12 |
V |
|
VAC |
AC/DC Adapter Input Voltage |
103 |
115 |
127 |
103 |
115 |
127 |
V |
|
tPLH |
Propagation Delay to output↑ |
|
1.5 |
|
|
2 |
|
ns |
|
tPHL |
Propagation Delay to output↓ |
|
1.5 |
|
|
2 |
|
ns |
|
tr/tf |
Rise/Fall Times(2) |
|
750 |
850 |
|
1100 |
1250 |
ps |
|
tSKEW |
Skew between any 2 outputs |
|
100 |
300 |
|
200 |
400 |
ps |
|
Vin I |
Minimum Input Voltage @ 150 MHz(3) |
20 |
10 |
|
20 |
10 |
|
mV
p-p |
|
Vin II |
Minimum Input Voltage @ 250 MHz(3) |
20 |
10 |
|
40 |
20 |
|
mV
p-p |
|
Vin III |
Minimum Input Voltage @ 1 GHz |
250 |
100 |
|
|
NA |
|
mV
p-p |
|
VCM |
Input Common Mode Range |
|
-2.0/+3.0 |
|
|
-2.0/+3.0 |
|
V |
|
fmax |
Max. Clock Frequency(4) |
1000 |
2000 |
|
250 |
300 |
|
MHz |
| |
Size |
1.3 x 2.9 x 3.9 |
1.3 x 2.9 x 3.9 |
in. |
| |
Weight |
7 |
7 |
Oz |
|
(1)
If the switch is set to the center position (0 V threshold) a non-driven channel will oscillate and induce jitter in the driven channel. Connect any output to any input to stop the oscillation.
(2) 20%-80% for ECL, 10%-90% for TTL. For the PRL-350ECL, an unused complementary output must be either terminated into 50 Ω/VTT or AC coupled into a 50 Ω load; otherwise, output waveform distortion and rise time degradation will occur. Use the PRL-ACT-50 Dual Channel AC-Coupled 50 Ω Termination for terminating unused complementary outputs. Use the PRL-550NQ/PQ4X, four channel NECL/PECL Terminators, respectively, for the 50 Ω/VTT termination and for connection of NECL/PECL signals to
50 Ω input oscilloscopes. If preservation of DC levels is not required, then the
PRL-SC-104, 0.1
µf DC block or the PRL-ACX-12dB 12 dB AC-coupled attenuator may be used to connect the NECL/PECL outputs to 50 Ω input instruments.
For the PRL-350TTL, very slight output waveform distortion and rise time degradation will occur when an unused complementary output is not terminated. For optimum performance, however, all outputs should be terminated.
(3) In order to reduce jitter near fMAX, terminate the non-driven input into 50 Ω when the input voltage is less than 20
mVP-P.
(4) Although the PRL-350ECL typically operates up to 2 GHz, the internal device is specified at 1 GHz by the device manufacturer; therefore the guaranteed
fMAX is 1 GHz.
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