IDT ICS810001-22

FemtoClock™ Dual VCXO Video PLL
ICS810001-22
DATA SHEET
General Description
Features
The ICS810001-22 is a member of the HiperClockS™
family of high performance clock solutions from IDT.
HiPerClockS™
The ICS810001-22 is a PLL based synchronous clock
generator that is optimized for digital video clock jitter
attenuation and frequency translation. The device
contains two internal frequency multiplication stages that are
cascaded in series. The first stage is a VCXO PLL that is optimized
to provide reference clock jitter attenuation, and to support the
complex PLL multiplication ratios needed for video rate conversion.
•
•
Jitter attenuation and frequency translation of video clock signals
•
Support of High-Definition (HD) and Standard-Definition (SD)
pixel rates
•
Dual VCXO-PLL supports both 60 and 59.94Hz base frame rates
in one device
•
Dual PLL mode for high-frequency clock generation (32.967MHz
to 162MHz)
The second stage is a FemtoClock™ frequency multiplier that
provides the low jitter, high frequency video output clock.
•
VCXO-PLL mode for low-frequency clock generation (27MHz and
26.973MHz)
Preset multiplication ratios are selected from internal lookup tables
using device input selection pins. The multiplication ratios are
optimized to support common video rates used in professional video
system applications. The VCXO requires the use of an external,
inexpensive pullable crystal. Two crystal connections are provided
(pin selectable) so that both 60 and 59.94Hz base frame rates can
be supported. The VCXO requires external passive loop filter
components which are used to set the PLL loop bandwidth and
damping characteristics.
•
•
•
•
One LVCMOS/LVTTL PLL clock output
•
•
•
3.3V supply voltage
Supported Input Frequencies
Supported Output Frequencies
ICS
Supports SMTPE 292M, ITU-R Rec. 601/656 and
MPEG-transport clocks
Two selectable LVCMOS/LVTTL input clocks
LVCMOS/LVTTL compatible control signals
RMS phase jitter @148.5MHz, using a 27MHz crystal
(12kHz – 20MHz): 1.01ps (typical)
0°C to 70°C ambient operating temperature
Available in a lead-free (RoHS 6) 32-VFQFN package
fVCXO = 27MHz
fVCXO = 26.973MHz
fVCXO = 27MHz
fVCXO = 26.973MHz
67.5kHz
67.4326
148.5
148.3516
56.25kHz
56.1938
74.25
74.1758
45.0kHz
44.955
49.5
49.4505
37.5kHz
37.4625
33
32.967
33.75kHz
33.7163
162
161.8382
31.4685kHz
31.4371
81
80.9191
31.25kHz
31.2188
54
53.9461
28.125kHz
28.0969
36
35.9640
27.0kHz
26.973
27
26.973
22.5kHz
22.4775
18.75kHz
18.7313
18kHz
17.982
15.7343kHz
15.7185
15.625kHz
15.6094
ICS810001BK-22 REVISION A SEPTEMBER 8, 2009
1
©2009 Integrated Device Technology, Inc.
ICS810001-22 Data Sheet
FEMTOCLOCK™ DUAL VCXO VIDEO PLL
0
CLK0
0
CLK1
1
XTAL_SEL
XTAL_OUT1
XTAL_IN1
XTAL_IN0
LF1
LF0
ISET
Loop
Filter
XTAL_OUT0
Block Diagram
1
Phase
Detector
VCXO
Charge
Pump
VCXO Feedback Divider
(M Value from Table)
CLK_SEL
V3:V0
VCXO
Divider
Table
4
MR
VCXO Jitter Attenuation PLL
10
FemtoClock
Frequency Multiplier
11
0= x22
1= x24
Master Reset
01
10
11
Output
Divider
00 = 4
01 = 8
10 = 12
11 = 18
00
01
10
11
Q
OE
MF
N1:N0
nBP1:nBP0
2
2
VDD
XTAL_SEL
XTAL_OUT1
XTAL_IN1
GND
XTAL_OUT0
VDDX
XTAL_IN0
Pin Assignment
32 31 30 29 28 27 26 25
24
N0
LF0
2
23
N1
ISET
3
22
nBP1
VDD
4
21
OE
nBP0
5
20
GND
GND
6
19
Q
CLK_SEL
7
18
VDDO
CLK1
8
17
VDDA
ICS810001-22
32 Lead VFQFN
5mm x 5mm x 0.925mm package body
K Package
Top View
V3
V2
V1
MF
MR
10 11 12 13 14 15 16
VDD
9
V0
1
CLK0
LF1
ICS810001BK-22 REVISION A SEPTEMBER 8, 2009
2
©2009 Integrated Device Technology, Inc.
ICS810001-22 Data Sheet
FEMTOCLOCK™ DUAL VCXO VIDEO PLL
Table 1. Pin Descriptions
Number
Name
Type
Description
1, 2
LF1, LF0
Analog
Input/Output
Loop filter connection node pins.
3
ISET
Analog
Input/Output
Charge pump current setting pin.
4, 11, 25
VDD
Power
5, 22
nBP0,
nBP1
Input
6, 20, 29
GND
Power
7
CLK_SEL
Input
Pulldown
Input clock select. When HIGH selects CLK1. When LOW, selects CLK0.
LVCMOS / LVTTL interface levels.
8, 9
CLK1, CLK0
Input
Pulldown
Single-ended clock inputs. LVCMOS/LVTTL interface levels.
10, 14,
15, 16
V0, V1,
V2, V3
Input
Pulldown
VCXO PLL divider selection pins. LVCMOS/LVTTL interface levels.
12
MR
Input
Pulldown
Active HIGH Master Reset. When logic HIGH, the internal dividers are reset
causing the output to go low. When logic LOW, the internal dividers and the
output is enabled. LVCMOS/LVTTL interface levels.
Pulldown
Core supply pins.
Pullup
PLL Bypass control pins. See block diagram.
Power supply ground.
13
MF
Input
17
VDDA
Power
Analog supply pin.
FemtoClock multiplication factor select pin. LVCMOS/LVTTL interface levels.
18
VDDO
Power
Output supply pin.
19
Q
Output
Single-ended VCXO PLL clock output. LVCMOS/LVTTL interface levels.
21
OE
Input
Pullup
23, 24
N1, N0
Input
Pulldown
FemtoClock output divide select pins. LVCMOS/LVTTL interface levels.
26
XTAL_SEL
Input
Pulldown
Crystal select. When HIGH, selects XTAL1. When LOW, selects XTAL0.
LVCMOS/LVTTL interface levels.
27,
28
XTAL_OUT1,
XTAL_IN1
Input
Crystal oscillator interface. XTAL_IN1 is the input. XTAL_OUT1 is the output.
30,
31
XTAL_OUT0,
XTAL_IN0
Input
Crystal oscillator interface. XTAL_IN0 is the input. XTAL_OUT0 is the output.
32
VDDX
Power
Power supply pin for VCXO charge pump.
Output enable. When logic LOW, the clock output is in high-impedance. When
logic HIGH, the output is enabled. LVCMOS/LVTTL interface levels.
NOTE: Pullup and Pulldown refer to internal input resistors. See Table 2, Pin Characteristics, for typical values.
Table 2. Pin Characteristics
Symbol
Parameter
CIN
Input Capacitance
CPD
Power Dissipation Capacitance
RPULLUP
Test Conditions
Minimum
Typical
Maximum
Units
4
pF
8.5
pF
Input Pullup Resistor
51
kΩ
RPULLDOWN
Input Pulldown Resistor
51
kΩ
ROUT
Output Impedance
22.5
Ω
ICS810001BK-22 REVISION A SEPTEMBER 8, 2009
VDD = VDDO = 3.465V
3
©2009 Integrated Device Technology, Inc.
ICS810001-22 Data Sheet
FEMTOCLOCK™ DUAL VCXO VIDEO PLL
Function Tables
Table 3A. VCXO PLL Feedback Divider and Input Frequency Function Table
Input
V3
V2
V1
V0
VCXO PLL Configuration
Feedback-Divider M
0 (default)
0 (default)
0 (default)
0 (default)
0
0
0
0
0
0
Input frequency for crystal frequency (fVCXO) in kHz
fVCXO = 27MHz
fVCXO = 26.973MHz
400
67.5
67.4326
1
480
56.25
56.1938
1
0
600
45.00
44.9550
0
1
1
720
37.50
37.4625
0
1
0
0
800
33.75
33.7163
0
1
0
1
858
31.4685
31.4371
0
1
1
0
864
31.25
31.2188
0
1
1
1
960
28.125
28.0969
1
0
0
0
1000
27.00
26.973
1
0
0
1
1200
22.50
22.4775
1
0
1
0
1440
18.75
18.7313
1
0
1
1
1500
18.00
17.9820
1
1
0
0
1716
15.7343
15.7185
1
1
0
1
1728
15.6250
15.6094
1
1
1
0
1716
15.7343
15.7185
1
1
1
1
960
28.125
28.0969
ICS810001BK-22 REVISION A SEPTEMBER 8, 2009
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©2009 Integrated Device Technology, Inc.
ICS810001-22 Data Sheet
FEMTOCLOCK™ DUAL VCXO VIDEO PLL
Table 3B. Output Frequency Table (Dual PLL Mode)
FemtoClock Look-up Table
fVCXO
MF
N1
N0
Output Frequency fQ (MHz)
0
0
0
148.5000
0
0
1
74.2500
0
1
0
49.5000
0
1
1
33.0000
1
0
0
162.0000
1
0
1
81.0000
1
1
0
54.0000
1
1
1
36.0000
0
0
0
148.3515
0
0
1
74.1758
0
1
0
49.4505
0
1
1
32.9670
1
0
0
161.8382
1
0
1
80.9191
1
1
0
53.9461
1
1
1
35.9640
27MHz
26.973MHz
NOTE: Use the VCXO-PLL mode to achieve output frequencies of 27MHz or 26.973MHz. See Table 3G.
Table 3C. CLK_SEL Function Table
Input
CLK_SEL
Operation
0 (default)
Selects CLK0 as PLL reference input.
1
Selects CLK1 as PLL reference input.
Table 3D. MR Master Reset Function Table
Input
MR
0 (default)
1
Operation
Normal operation, internal dividers and the output Q are enabled.
Internal dividers are reset. Q output is in logic low state (with OE = 1).
Table 3E. FemtoCLock PLL Feedback Divider Function Table
Input
MF
Operation
0 (default)
Selects MF = 22. The 2nd stage PLL (FemtoClock. multiplies the output frequency of the VCXO-PLL by 22.
1
Selects MF = 24. The 2nd stage PLL (FemtoClock. multiplies the output frequency of the VCXO-PLL by 24.
ICS810001BK-22 REVISION A SEPTEMBER 8, 2009
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©2009 Integrated Device Technology, Inc.
ICS810001-22 Data Sheet
FEMTOCLOCK™ DUAL VCXO VIDEO PLL
Table 3F. PLL Output Divider Function Table
Input
N1
N0
Operation
0 (default)
0 (default)
Output divider N = 4.
0
1
Output divider N = 8.
1
0
Output divider N = 12.
1
1
Output divider N = 18.
Table 3G. PLL BYPASS Logic Function Table
Input
nBP1
nBP0
Operation
0
0
VCXO-PLL mode: The input reference frequency is multiplied by the VCXO-PLL. fOUT = fREF * M.
0
1
Test mode: The input reference frequency is divided by the output divider N and bypasses both PLLs.
fOUT = fREF ÷ N.
1
0
FemtoClock Mode: The input reference frequency is multiplied by the 2nd PLL (FemtoClock, MF). The
1st PLL (VCXO-PLL, M) is bypassed. This mode does not support jitter attenuatiion. fOUT = fREF * MF
÷ N.
1 (default)
1 (default)
Dual PLL Mode: both PLLs are cascaded for jitter attenuation and frequency multiplication.
fOUT = fREF * M * MF ÷ N.
ICS810001BK-22 REVISION A SEPTEMBER 8, 2009
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©2009 Integrated Device Technology, Inc.
ICS810001-22 Data Sheet
FEMTOCLOCK™ DUAL VCXO VIDEO PLL
Absolute Maximum Ratings
NOTE: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device.
These ratings are stress specifications only. Functional operation of product at these conditions or any conditions beyond
those listed in the DC Characteristics or AC Characteristics is not implied. Exposure to absolute maximum rating conditions for
extended periods may affect product reliability.
Item
Rating
Supply Voltage, VDD
4.6V
Inputs, VI
-0.5V to VDD + 0.5V
Outputs, VO
-0.5V to VDDO + 0.5V
Package Thermal Impedance, θJA
37°C/W (0 mps)
Storage Temperature, TSTG
-65°C to 150°C
DC Electrical Characteristics
Table 4A. Power Supply DC Characteristics, VDD = VDDO = VDDX = 3.3V ± 5%, TA = 0°C to 70°C
Symbol
Parameter
Test Conditions
Minimum
Typical
Maximum
Units
VDD
Core Supply Voltage
3.135
3.3
3.465
V
VDDA
Analog Supply Voltage
VDD – 0.15
3.3
VDD
V
VDDO
Output Supply Voltage
3.135
3.3
3.465
V
VDDX
Charge Pump Supply Voltage
3.135
3.3
3.465
V
IDD
Power Supply Current
187
mA
IDDA
Analog Supply Current
15
mA
IDDO
Output Supply Current
4
mA
IDDX
Charge Pump Supply Current
4
mA
No Load
Table 4B. LVCMOS/LVTTL DC Characteristics, VDD = VDDO = VDDX = 3.3V ± 5%, TA = 0°C to 70°C
Symbol
Parameter
VIH
Input High Voltage
VIL
Input Low Voltage
IIH
IIL
Input
High Current
Input
Low Current
Test Conditions
Minimum
Typical
Maximum
Units
2
VDD + 0.3
V
-0.3
0.8
V
CLK[0:1], CLK_SEL,
P[1:0], V[3:0], N[1:0],
MR, MF, XTAL_SEL
VDD = VIN = 3.465V
150
µA
OE, nBP0, nBP1
VDD = VIN = 3.465V
5
µA
CLK[0:1], CLK_SEL,
P[1:0], V[3:0], N[1:0],
MR, MF, XTAL_SEL
VDD = 3.465V, VIN = 0V
-5
µA
OE, nBP0, nBP1
VDD = 3.465, VIN = 0V
-150
µA
2.6
V
VOH
Output High Voltage
IOH = -24mA
VOL
Output Low Voltage
IOL = 24mA
ICS810001BK-22 REVISION A SEPTEMBER 8, 2009
7
0.5
V
©2009 Integrated Device Technology, Inc.
ICS810001-22 Data Sheet
FEMTOCLOCK™ DUAL VCXO VIDEO PLL
AC Electrical Characteristics
Table 5. AC Characteristics, VDD = VDDO = VDDX = 3.3V ± 5%, TA = 0°C to 70°C
Symbol
Parameter
fOUT
Output Frequency
tjit(Ø)
RMS Phase Jitter, (Random),
NOTE 1
tR / tF
Output Rise/Fall Time
odc
Output Duty Cycle
tLOCK
VCXO & FemtoClock PLL
Lock Time; NOTE 2
Test Conditions
Minimum
nBP0, nBP1 = 00
Maximum
Units
26
28
MHz
nBP1 = 1
31
175
MHz
148.5MHz,
Integration Range: 12kHz – 20MHz
20% to 80%
Typical
1.01
ps
250
750
ps
48
52
%
5
ms
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.
See Parameter Measurement Information Section.
NOTE 1: Refer to the Phase Noise Plot.
NOTE 2: Lock Time measured from power-up to stable output frequency.
ICS810001BK-22 REVISION A SEPTEMBER 8, 2009
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©2009 Integrated Device Technology, Inc.
ICS810001-22 Data Sheet
FEMTOCLOCK™ DUAL VCXO VIDEO PLL
Typical Phase Noise at 148.3516MHz
Noise Power
dBc
Hz
148.5MHz
RMS Phase Jitter (Random)
12kHz to 20MHz = 1.01ps (typical)
Offset Frequency (Hz)
ICS810001BK-22 REVISION A SEPTEMBER 8, 2009
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©2009 Integrated Device Technology, Inc.
ICS810001-22 Data Sheet
FEMTOCLOCK™ DUAL VCXO VIDEO PLL
Parameter Measurement Information
1.65V±5%
1.65V±5%
VDD,
VDDO,
“VDDX
SCOPE
VDDA
Qx
LVCMOS
80%
80%
Q
20%
20%
tR
tF
GND
-1.65±5%
Output Rise/Fall Time
3.3V Output Load AC Test Circuit
Phase Noise Plot
V
Noise Power
DDO
2
Q
t PW
t
odc =
PERIOD
t PW
x 100%
f1
t PERIOD
Offset Frequency
f2
RMS Jitter = Area Under Offset Frequency Markers
Phase Jitter
Output Duty Cycle/Pulse Width/Period
ICS810001BK-22 REVISION A SEPTEMBER 8, 2009
10
©2009 Integrated Device Technology, Inc.
ICS810001-22 Data Sheet
FEMTOCLOCK™ DUAL VCXO VIDEO PLL
Application Information
Recommendations for Unused Input Pins
Inputs:
CLK Inputs
For applications not requiring the use of a clock input, it can be left
floating. Though not required, but for additional protection, a 1kΩ
resistor can be tied from the CLK input to ground.
LVCMOS Control Pins
All control pins have internal pullups or pulldowns; additional
resistance is not required but can be added for additional protection.
A 1kΩ resistor can be used.
Power Supply Filtering Technique
As in any high speed analog circuitry, the power supply pins are
vulnerable to random noise. To achieve optimum jitter performance,
power supply isolation is required. The ICS810001-22 provides
separate power supplies to isolate any high switching noise from the
outputs to the internal PLL. VDD, VDDA, VDDO and VDDX should be
individually connected to the power supply plane through vias, and
0.01µF bypass capacitors should be used for each pin. Figure 1
illustrates this for a generic VDD pin and also shows that VDDA
requires that an additional 10Ω resistor along with a 10µF bypass
capacitor be connected to the VDDA pin.
3.3V
VDD
.01µF
10Ω
VDDX
10Ω
.01µF
10µF
VDDA
.01µF
10µF
Figure 1. Power Supply Filtering
ICS810001BK-22 REVISION A SEPTEMBER 8, 2009
11
©2009 Integrated Device Technology, Inc.
ICS810001-22 Data Sheet
FEMTOCLOCK™ DUAL VCXO VIDEO PLL
VFQFN EPAD Thermal Release Path
In order to maximize both the removal of heat from the package and
the electrical performance, a land pattern must be incorporated on
the Printed Circuit Board (PCB) within the footprint of the package
corresponding to the exposed metal pad or exposed heat slug on the
package, as shown in Figure 2. The solderable area on the PCB, as
defined by the solder mask, should be at least the same size/shape
as the exposed pad/slug area on the package to maximize the
thermal/electrical performance. Sufficient clearance should be
designed on the PCB between the outer edges of the land pattern
and the inner edges of pad pattern for the leads to avoid any shorts.
and dependent upon the package power dissipation as well as
electrical conductivity requirements. Thus, thermal and electrical
analysis and/or testing are recommended to determine the minimum
number needed. Maximum thermal and electrical performance is
achieved when an array of vias is incorporated in the land pattern. It
is recommended to use as many vias connected to ground as
possible. It is also recommended that the via diameter should be 12
to 13mils (0.30 to 0.33mm) with 1oz copper via barrel plating. This is
desirable to avoid any solder wicking inside the via during the
soldering process which may result in voids in solder between the
exposed pad/slug and the thermal land. Precautions should be taken
to eliminate any solder voids between the exposed heat slug and the
land pattern. Note: These recommendations are to be used as a
guideline only. For further information, please refer to the Application
Note on the Surface Mount Assembly of Amkor’s
Thermally/Electrically Enhance Leadframe Base Package, Amkor
Technology.
While the land pattern on the PCB provides a means of heat transfer
and electrical grounding from the package to the board through a
solder joint, thermal vias are necessary to effectively conduct from
the surface of the PCB to the ground plane(s). The land pattern must
be connected to ground through these vias. The vias act as “heat
pipes”. The number of vias (i.e. “heat pipes”) are application specific
PIN
PIN PAD
SOLDER
EXPOSED HEAT SLUG
GROUND PLANE
THERMAL VIA
SOLDER
LAND PATTERN
(GROUND PAD)
PIN
PIN PAD
Figure 2. P.C. Assembly for Exposed Pad Thermal Release Path – Side View (drawing not to scale)
ICS810001BK-22 REVISION A SEPTEMBER 8, 2009
12
©2009 Integrated Device Technology, Inc.
ICS810001-22 Data Sheet
FEMTOCLOCK™ DUAL VCXO VIDEO PLL
Schematic Example
Figure 3 shows an example of the ICS810001-22 application
schematic. In this example, the device is operated at VDD = VDDO =
3.3V. The decoupling capacitors should be located as close as
possible to the power pin. The input is driven by a 3.3V LVPECL
driver. An optional 3-pole filter can also be used for additional spur
reduction. It is recommended that the loop filter components be laid
out for the 3-pole option. This will also allow the 2-pole filter to be
used.
Logic Control Input Examples
Set Logic
Input to
'1'
Set Logic
Input to
'0'
VDD
RU1
1K
RU2
Not Install
To Logic
Input
pins
To Logic
Input
pins
RD1
Not Install
XTAL_OUT0
RD2
1K
C1
SPARE
X1
820k
R2
Cp
0.68nF
C5
220pF
10
VDDX
C7
10u
C8
0.01u
U1
2-pole loop filter with Mid LBW Setting
LF
LF
Rs
150k
VDD
nPB0
GND
CLK_SEL
Cp
0.68nF
Cs
0.18uF
1
2
3
4
5
6
7
8
C6
0.1u
LF1
LF0
ISET
VDD
nPB0
GND
CLK_SEL
CLK1
VDD = VDDO = 3.3V
N0
N1
nBP1
OE
GND
Q
VDDO
VDDA
24
23
22
21
20
19
18
17
N0
N1
nBP1
OE
GND
R3
VDDO
R4
5.6K
R5
V0
Ro ~ 7 Ohm
R9
Zo = 50 Ohm
MR
MF
V1
V2
V3
VDDA
Q1
CLK0
Receiv er
C10
0.1u
9
10
11
12
13
14
15
16
VDD
C11
0.01u
Zo = 50
33
VDDO
C LK0
V0
VD D
MR
MF
V1
V2
V3
C9
0.1u
C4
SPARE
VDD
XT AL_SEL
Cs
0.18uF
VDD
GN D
Rs
150k
LF
XTAL_OUT1
C3
SPARE
32
31
30
29
28
27
26
25
LF
C2
SPARE
X2
XTAL_IN0
3-pole loop filter example - (optional)
R1
XTAL_IN1
VD D X
XT AL_IN 0
XT AL_OU T 0
GN D
XT AL_IN 1
XT AL_OU T 1
XT AL_SEL
VD D
VDD
VDD
10
C12
10u
VDD
43
Driv er_LVCMOS
C13
0.1u
Figure 3. ICS810001-22 Schematic Example
ICS810001BK-22 REVISION A SEPTEMBER 8, 2009
13
©2009 Integrated Device Technology, Inc.
ICS810001-22 Data Sheet
FEMTOCLOCK™ DUAL VCXO VIDEO PLL
VCXO-PLL EXTERNAL COMPONENTS
Choosing the correct external components and having a proper
printed circuit board (PCB) layout is a key task for quality operation
of the VCXO-PLL. In choosing a crystal, special precaution must be
taken with the package and load capacitance (CL). In addition,
frequency, accuracy and temperature range must also be
considered. Since the pulling range of a crystal also varies with the
package, it is recommended that a metal-canned package like HC49
be used. Generally, a metal-canned package has a larger pulling
range than a surface mounted device (SMD). For crystal selection
information, refer to the VCXO Crystal Selection Application Note.
The frequency of oscillation in the third overtone mode is not
necessarily at exactly three times the fundamental frequency. The
mechanical properties of the quartz element dictate the position of
the overtones relative to the fundamental. The oscillator circuit may
excite both the fundamental and overtone modes simultaneously.
This will cause a nonlinearity in the tuning curve. This potential
problem is why VCXO crystals are required to be tested for absence
of any activity inside a +/-200 ppm window at three times the
fundamental frequency. Refer to FL_3OVT and FL_3OVT_spurs in the
crystal Characteristics table.
The crystal’s load capacitance CL characteristic determines its
resonating frequency and is closely related to the VCXO tuning
range. The total external capacitance seen by the crystal when
installed on a board is the sum of the stray board capacitance, IC
package lead capacitance, internal varactor capacitance and any
installed tuning capacitors (CTUNE).
The crystal and external loop filter
components should be kept as
close as possible to the device.
Loop filter and crystal traces
should be kept short and
separated from each other. Other
signal traces should be kept
separate and not run underneath
the device, loop filter or crystal
components.
If the crystal’s CL is greater than the total external capacitance, the
VCXO will oscillate at a higher frequency than the crystal
specification. If the crystal’s CL is lower than the total external
capacitance, the VCXO will oscillate at a lower frequency than the
crystal specification. In either case, the absolute tuning range is
reduced. The correct value of CL is dependent on the characteristics
of the VCXO. The recommended CL in the Crystal Parameter Table
balances the tuning range by centering the tuning curve.
LF0
LF1
ISET
RS
CP
RSET
CS
XTAL_IN
CTUNE
19.44MHz
XTAL_OUT
CTUNE
VCXO Characteristics Table
Symbol
Parameter
Typical
Units
kVCXO
VCXO Gain
13.65
kHz/V
CV_LOW
Low Varactor Capacitance
16
pF
CV_HIGH
High Varactor Capacitance
33
pF
VCXO-PLL Loop Bandwidth Selection Table
Bandwidth
Crystal Frequency (MHz)
MF
RS (kΩ)
CS (µF)
CP (nF)
RSET (kΩ)
11Hz (Low)
27, 26.973
1728
150
1
10
18
64Hz (Mid)
27, 26.973
1000
150
0.18
0.68
5.6
597Hz (High)
27, 26.973
400
220
0.022
0.12
2.2
Crystal Characteristics
Symbol
Parameter
Test Conditions
Minimum
Mode of Oscillation
Typical
Maximum
Units
Fundamental
27
MHz
26.973
MHz
fN
Frequency
fT
Frequency Tolerance
±20
ppm
fS
Frequency Stability
±20
ppm
70
0C
Operating Temperature Range
0
CL
Load Capacitance
12
pF
CO
Shunt Capacitance
4
pF
CO / C1
Pullability Ratio
ESR
Equivalent Series Resistance
20
Ω
Drive Level
1
mW
±3 per year
ppm
Aging @ 25
220
0C
ICS810001BK-22 REVISION A SEPTEMBER 8, 2009
14
240
©2009 Integrated Device Technology, Inc.
ICS810001-22 Data Sheet
FEMTOCLOCK™ DUAL VCXO VIDEO PLL
Reliability Information
Table 6. θJA vs. Air Flow Table for a 32 Lead VFQFN
θJA vs. Air Flow
Meters per Second
Multi-Layer PCB, JEDEC Standard Test Boards
0
1
2.5
37.0°C/W
32.4°C/W
29°C/W
Transistor Count
The transistor count for ICS810001-22 is: 7283
ICS810001BK-22 REVISION A SEPTEMBER 8, 2009
15
©2009 Integrated Device Technology, Inc.
ICS810001-22 Data Sheet
FEMTOCLOCK™ DUAL VCXO VIDEO PLL
Package Outline and Package Dimensions
Package Outline - K Suffix for 32 Lead VFQFN
(Ref.)
S eating Plan e
N &N
Even
(N -1)x e
(R ef.)
A1
Ind ex Area
A3
N
To p View
Anvil
Anvil
Singulation
Singula tion
or
OR
Sawn
Singulation
L
N
e (Ty p.)
2 If N & N
1
are Even
2
E2
(N -1)x e
(Re f.)
E2
2
b
A
(Ref.)
D
e
N &N
Odd
Chamfer 4x
0.6 x 0.6 max
OPTIONAL
0. 08
Th er mal
Ba se
D2
2
C
D2
C
Bottom View w/Type A ID
Bottom View w/Type B ID
Bottom View w/Type C ID
BB
4
CHAMFER
4
N N-1
There are 3 methods of indicating pin 1 corner
at the back of the VFQFN package are:
1. Type A: Chamfer on the paddle (near pin 1)
2. Type B: Dummy pad between pin 1 and N.
3. Type C: Mouse bite on the paddle (near pin 1)
2
1
2
1
CC
2
1
4
N N-1
DD
4
RADIUS
4
N N-1
AA
4
Table 7. Package Dimensions
NOTE: The following package mechanical drawing is a generic
drawing that applies to any pin count VFQFN package. This drawing
is not intended to convey the actual pin count or pin layout of this
device. The pin count and pinout are shown on the front page. The
package dimensions are in Table 7 below.
JEDEC Variation: VHHD-2/-4
All Dimensions in Millimeters
Symbol
Minimum
Nominal
Maximum
N
32
A
0.80
1.00
A1
0
0.05
A3
0.25 Ref.
b
0.18
0.25
0.30
8
ND & NE
D&E
5.00 Basic
D2 & E2
3.0
3.3
e
0.50 Basic
L
0.30
0.40
0.50
Reference Document: JEDEC Publication 95, MO-220
ICS810001BK-22 REVISION A SEPTEMBER 8, 2009
16
©2009 Integrated Device Technology, Inc.
ICS810001-22 Data Sheet
FEMTOCLOCK™ DUAL VCXO VIDEO PLL
Ordering Information
Table 8. Ordering Information
Part/Order Number
810001BK-22LF
810001BK-22LFT
Marking
ICS0001B22L
ICS0001B22L
Package
“Lead-Free” 32 Lead VFQFN
“Lead-Free” 32 Lead VFQFN
Shipping Packaging
Tray
2500 Tape & Reel
Temperature
0°C to 70°C
0°C to 70°C
NOTE: Parts that are ordered with an "LF" suffix to the part number are the Pb-Free configuration and are RoHS compliant.
While the information presented herein has been checked for both accuracy and reliability, Integrated Device Technology (IDT) assumes no responsibility for either its use or for the
infringement of any patents or other rights of third parties, which would result from its use. No other circuits, patents, or licenses are implied. This product is intended for use in normal
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recommended without additional processing by IDT. IDT reserves the right to change any circuitry or specifications without notice. IDT does not authorize or warrant any IDT product
for use in life support devices or critical medical instruments.
ICS810001BK-22 REVISION A SEPTEMBER 8, 2009
17
©2009 Integrated Device Technology, Inc.
ICS810001-22 Data Sheet
6024 Silver Creek Valley Road
San Jose, California 95138
FEMTOCLOCK™ DUAL VCXO VIDEO PLL
Sales
800-345-7015 (inside USA)
+408-284-8200 (outside USA)
Fax: 408-284-2775
www.IDT.com/go/contactIDT
Technical Support
[email protected]
+480-763-2056
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