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SI5347_16 Datasheet, PDF (26/55 Pages) Silicon Laboratories – Dual/Quad DSPLL Any-Frequency, Any-Output Jitter Attenuators
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Si5347/46 Rev D Data Sheet
Electrical Specifications
Parameter
Symbol
Test Condition
Notes:
1. Voltage swing is specified as single-ended mVpp.
Min
Typ
Max
Unit
OUTx
OUTxb
Vcm
Vcm
Vpp_se
Vpp_se
Vpp_diff = 2*Vpp_se
2. Imposed for jitter performance.
3. Rise and fall times can be estimated using the following simplified equation: tr/tf80-20 = ((0.8 - 0.2) x VIN_Vpp_se) / SR.
4. Pulsed CMOS mode is intended primarily for single-ended LVCMOS input clocks < 1 MHz, which must be dc-coupled because
they have a duty cycle significantly less than 50%. A typical application example is a low frequency video frame sync pulse. Since
the input thresholds (VIL, VIH) of this buffer are non-standard (0.4 and 0.8 V, respectively), refer to the input attenuator circuit for
DC-coupled Pulsed LVCMOS in the Si5347-46 Family Reference Manual. Otherwise, for standard LVCMOS input clocks, use the
Standard AC-coupled, Single-ended input mode.
Table 5.4. Serial and Control Input Pin Specifications
(VDD = 1.8 V ±5%, VDDA = 3.3 V ±5%, VDDS = 3.3 V ±5%, 1.8 V ±5%, TA = –40 to 85 °C)
Parameter
Symbol
Test Condition
Min
Typ
Max
Si5347 Serial and Control Input Pins (I2C_SEL, RSTb, OE0b, A1/SDO, SCLK, A0/CSb, FINC, A0/CSb, SDA/SDIO,
DSPLL_SEL[1:0])
Input Voltage
VIL
—
—
0.3 x VDDIO1
VIH
0.7 x VDDIO1
—
—
Input Capacitance
CIN
—
2
—
Input Resistance
RL
—
20
—
Minimum Pulse Width
PW
RSTb, FINC
100
—
—
Update Rate
FUR
FINC
—
—
1
Si5347 Control Input Pins (FDEC, OE1b)
Input Voltage
VIL
—
—
0.3 x VDDS
VIH
0.7 x VDDS
—
—
Input Capacitance
CIN
—
2
—
Minimum Pulse Width
PW
FDEC
100
—
—
Update Rate
FUR
FDEC
—
—
1
Si5346 Serial and Control Input Pins (I2C_SEL, RSTb, OE0b, OE1b, A1/SDO, SCLK, A0/CSb, SDA/SDIO)
Input Voltage
VIL
—
—
0.3 x VDDIO1
VIH
0.7 x VDDIO1
—
—
Input Capacitance
CIN
—
2
—
Input Resistance
RL
—
20
—
Minimum Pulse Width
PW
RSTb
100
—
—
Note:
1. VDDIO is determined by the IO_VDD_SEL bit. It is selectable as VDDA or VDD.
Unit
V
V
pF
kΩ
ns
MHz
V
V
pF
ns
MHz
V
V
pF
kΩ
ns
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