SNAS605 AP – MARCH 2013 – REVISED JUNE 2013
Electrical Characteristics
(continued)
(3.15 V < V
CC
< 3.45 V, -40 °C < T
A
< 85 °C. Typical values at V
CC
= 3.3 V, T
A
= 25 °C, at the Recommended Operating
Conditions and are
not
assured.)
Symbol
Parameter
Conditions
Offset = 1 kHz
Offset = 10 kHz
Offset = 100 kHz
L(f)
CLKout
LMK04828
VCO0
SSB Phase Noise
Offset = 1 MHz
(2)
Min
Typ
(1)
Max
Units
CLKout Closed Loop Phase Noise Specifications a Commercial Quality VCXO (continued)
-124.3
-134.7
-136.5
-148.4
LVDS
-156.4
-159.1
-160.8
-124.2
-134.4
-135.2
-151.5
LVDS
-159.9
-155.8
-158.1
dBc/Hz
dBc/Hz
Offset = 10 MHz
HSDS 8 mA
LVPECL16 /w
240
Ω
Offset = 1 kHz
Offset = 10 kHz
Offset = 100 kHz
L(f)
CLKout
LMK04828
VCO1
SSB Phase Noise
Offset = 1 MHz
(2)
Offset = 10 MHz
HSDS 8 mA
LVPECL16 /w
240
Ω
(1)
(2)
VCXO used is a 122.88 MHz Crystek CVHD-950-122.880.
Data collected using ADT2-1T+ balun. Loop filter is C1 = 47 pF, C2 = 3.9 nF, R2 = 620
Ω,
C3 = 10 pF, R3 = 200
Ω,
C4 = 10 pF, R4 =
200
Ω,
PLL1_CP = 450 µA, PLL2_CP = 3.2 mA.. VCO0 loop filter bandwidth = 344 kHz, phase margin = 73 degrees. VCO1 Loop filter
loop bandwidth = 233 kHz, phase margin = 70 degrees. CLKoutX_Y_IDL = 1, CLKoutX_Y_ODL = 0.
Copyright © 2013, Texas Instruments Incorporated
ELECTRICAL SPECIFICATIONS
Product Folder Links :LMK04826B,
17
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