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STCD2400 Datasheet, PDF (29/39 Pages) STMicroelectronics – Multichannel clock distribution circuit
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STCD22x0, STCD23x0, STCD24x0
DC and AC parameters
Table 10. DC and AC characteristics (continued)
Sym.
Parameter
Condition(1)
Min
Typ
Max
Unit
VCC = 2.5 V to 5.1 V,
Fripple = 217 Hz,
60
ILOAD = 20 mA
VCC = 2.5 V to 5.1 V,
Fripple = 1 kHz,
40
PSRR Power supply rejection ratio(3)(4)
ILOAD = 20 mA
VCC = 2.5 V to 5.1 V,
Fripple = 1 MHz,
40
ILOAD = 20 mA
VCC = 2.5 V to 5.1 V,
Fripple = 3.25 MHz,
40
ILOAD = 20 mA
eN
Output noise voltage(3)
ILOAD = 5 mA, 10 Hz to
100 kHz
tST
Startup time(3)
VTCXO > 90%,
ILOAD = 10 µA to 20 mA
tF
Output voltage falling time(3)
VTCXO < 10%,
ILOAD = 0
Clock distribution
67
60
dB
45
µVrms
150
400
µs
120
400
µs
fMCLK
Master clock (from external clock
source)
fCLK duty cycle
VIN
Input clock voltage level(5)
VOH
Output high
VOL
Output low
Tr/f
Rise/fall time(6)
Quiescent current(7)
IQC
(including LDO)
ICC
Active current(8)
Standby current
ISB
(including LDO)
RIN
Input impedance
Square wave / sine
wave
Square wave
Sine wave
CL = 20 pF
CL = 20 pF
CL =10 pF~ 40 pF
1 channel enabled
2 channels enabled
3 channels enabled
4 channels enabled
1 channel enabled
2 channels enabled
3 channels enabled
4 channels enabled
All buffers off
10
26
52
MHz
40
50
60
%
0.8
1.8 VTCXO + 0.2 Vpp
0.8
1 VTCXO + 0.2 Vpp
VTCXO – 0.05 VTCXO
V
0.05
V
1
2
5
ns
80
200
80
200
µA
80
200
80
200
1.9
3.0
mA
4.1
5.2
0.2
1
µA
> 100
kΩ
Doc ID 15400 Rev 2
29/39
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