841N4830 Datasheet, PDF (6/28 Pages) Integrated Device Technology – Fourth generation FemtoClock

841N4830 DATA SHEET
AC Electrical Characteristics
Table 6A. LVCMOS AC Characteristics, V_DD = 3.0V to 3.6V, V_{DDO_QA3} = V_{DDO_QB} = 2.7V to 3.6V, T_A = -40°C to 85°C
Symbol Parameter
Test Conditions
Minimum
Typical
Maximum Units
QB
PLL mode
50
MHz
f_OUT
Output Frequency QA3
PLL mode
PLL Bypass
100
20
MHz
MHz
tjit(Ø)
RMS Phase Jitter (Random); NOTE
1
100MHz, Integration Range:
12kHz – 20MHz
0.34
ps
t_R / t_F
odc
Output Rise/Fall Time
Output Duty Cycle
200
600
ps
47
53
%
V_OH
Output High Voltage;
NOTE 2
QA3, QB
2.2
V
V_OL
Output Low Voltage;
NOTE 2
QA3, QB
ƒ 100MHz
0.9
V
NOTE: Electrical parameters are guaranteed over the specified ambient operating temperature range, which is established when the device is
mounted in a test socket with maintained transverse airflow greater than 500 lfpm. The device will meet specifications after thermal equilibrium
has been reached under these conditions.
Using a 25MHz, 12pF quartz crystal.
NOTE 1: Refer to the Phase Noise plot.
NOTE 2: Outputs are terminated with 50 to V_{DDO_X}/2. See Parameter Measurement Information, Output Load Test Circuit diagram.
Table 6B. LVPECL AC Characteristics, V_DD = 3.0V to 3.6V, V_{DDO_REF} = 2.7V to 3.6V, V_EE = 0V, T_A = -40°C to 85°C
Symbol Parameter
Test Conditions
Minimum
Typical
Maximum Units
f_OUT
Output Frequency
REF_OUT,
nREF_OUT
25
MHz
t_R / t_F
Output
Rise/Fall Time
REF_OUT,
nREF_OUT
20% to 80%
100
600
ps
odc
Output Duty Cycle
REF_OUT,
nREF_OUT
49
51
%
NOTE: Electrical parameters are guaranteed over the specified ambient operating temperature range, which is established when the device is
mounted in a test socket with maintained transverse airflow greater than 500 lfpm. The device will meet specifications after thermal equilibrium
has been reached under these conditions.
FEMTOCLOCK® NG CRYSTAL-TO-HCSL FREQUENCY SYNTHESIZER
6
Rev E 7/1/15