SI5350A-B Datasheet, PDF (5/29 Pages) Silicon Laboratories – FACTORY-PROGRAMMABLE ANY-FREQUENCY CMOS CLOCK GENERATOR

Si5350A-B
Table 4. AC Characteristics
(V_DD = 1.8 V ±5%, 2.5 V ±10%, or 3.3 V ±10%, T_A = –40 to 85 °C)
Parameter
Powerup Time
Powerup Time, PLL Bypass Mode
Output Enable Time
Output Frequency Transition Time
Spread Spectrum Frequency
Deviation
Symbol
Test Condition
T_RDY
T_BYP
T_OE
From V_DD = V_DDmin to valid output
clock, C_L = 5 pF, f_CLKn > 1 MHz
From V_DD = V_DDmin to valid output
clock, C_L = 5 pF, f_CLKn > 1 MHz
From OEB assertion to valid clock
output, C_L = 5 pF, f_CLKn > 1 MHz
T_FREQ
f_CLKn > 1 MHz
SS_DEV
Down spread.
Selectable in 0.1% steps.
Spread Spectrum Modulation Rate SS_MOD
Min
—
—
—
—
–0.1
30
Typ
2
0.5
—
—
—
31.5
Max
10
1
10
10
–2.5
33
Unit
ms
ms
µs
µs
%
kHz
Table 5. Input Characteristics
(V_DD = 1.8 V ±5%, 2.5 V ±10%, or 3.3 V ±10%, T_A = –40 to 85 °C)
Parameter
Symbol
Test Condition
Min
Typ
Max
Unit
Crystal Frequency
f_XTAL
25
—
27
MHz
P0-P4 Input Low Voltage V_{IL_P0-4}
–0.1
—
0.3 x V_DD
V
P0-P4 Input High Voltage
V_{IH_P0-4}
V_DD = 2.5 V or 3.3 V 0.7 x V_DD
V_DD = 1.8 V
0.8 x V_DD
—
—
3.60
3.60
V
V
Table 6. Output Characteristics
(V_DD = 1.8 V ±5%, 2.5 V ±10%, or 3.3 V ±10%, T_A = –40 to 85 °C)
Parameter
Symbol
Test Condition
Min
Typ Max Unit
Frequency Range¹
F_CLK
0.0025 — 200 MHz
Load Capacitance
C_L
F_CLK < 100 MHz
—
—
15
pF
Duty Cycle
DC
F_CLK < 160 MHz, Measured at V_DD/2
45
F_CLK > 160 MHz, Measured at V_DD/2
40
50
55
%
50
60
%
Rise/Fall Time
t_r/t_f
20%–80%, C_L = 5 pF
—
1
1.5 ns
Output High Voltage
V_OH
V_DD – 0.6 —
—
V
Output Low Voltage
V_OL
—
— 0.6
V
Notes:
1. Only two unique frequencies above 112.5 MHz can be simultaneously output.
2. Measured over 10k cycles. Jitter is only specified at the default high drive strength (50  output impedance).
3. Jitter is highly dependent on device frequency configuration. Specifications represent a “worst case, real world”
frequency plan; actual performance may be substantially better. Three-output 10MSOP package measured with clock
outputs of 74.25, 24.576, and 48 MHz. Eight-output 20QFN package measured with clock outputs of 33.33, 74.25, 27,
24.576, 22.5792, 28.322, 125, and 48 MHz.
Rev. 1.0
5