TI CDCM61004RHBT Four output, integrated vco, low-jitter clock generator Datasheet

CDCM61004
www.ti.com ................................................................................................................................................... SCAS871C – FEBRUARY 2009 – REVISED JULY 2009
Four Output, Integrated VCO, Low-Jitter Clock Generator
FEATURES
1
• One Single-Ended/Crystal Reference Input
Including 24.8832 MHz, 25 MHz, and
26.5625 MHz
• Input Frequency Range: 21.875 MHz to
28.47 MHz
• On-Chip VCO Operates in Frequency Range of
1.75 GHz to 2.05 GHz
• 4x Output Available:
– Pin-Selectable Between LVPECL, LVDS, or
2-LVCMOS; Operates at 3.3 V
• LVCMOS Bypass Output Available
• Output Frequency Selectable by /1, /2, /3, /4, /6,
/8 from a Single Output Divider
• Supports Common LVPECL/LVDS Output
Frequencies:
– 62.5 MHz, 74.25 MHz, 75 MHz, 77.76 MHz,
100 MHz, 106.25 MHz, 125 MHz, 150 MHz,
155.52 MHz, 156.25 MHz, 159.375 MHz,
187.5 MHz, 200 MHz, 212.5 MHz, 250 MHz,
311.04 MHz, 312.5 MHz, 622.08 MHz,
625 MHz
• Supports Common LVCMOS Output
Frequencies:
– 62.5 MHz, 74.25 MHz, 75 MHz, 77.76 MHz,
100 MHz, 106.25 MHz, 125 MHz, 150 MHz,
155.52 MHz, 156.25 MHz, 159.375 MHz,
187.5 MHz, 200 MHz, 212.5 MHz, 250 MHz
• Output Frequency Range: 43.75 MHz to
683.264 MHz (See Table 3)
• Internal PLL Loop Bandwidth: 400 kHz
• High-Performance PLL Core:
– Phase Noise typically at –146 dBc/Hz at
5-MHz Offset for 625-MHz LVPECL Output
– Random Jitter typically at 0.509 ps, RMS
(10 kHz to 20 MHz) for 625-MHz LVPECL
Output
• Output Duty Cycle Corrected to 50% (± 5%)
• Low Output Skew of 30 ps on LVPECL Outputs
• Divider Programming Using Control Pins:
– Two Pins for Prescaler/Feedback Divider
– Three Pins for Output Divider
– Two Pins for Output Select
2
•
•
•
•
•
Chip Enable Control Pin Available
3.3-V Core and I/O Power Supply
Industrial Temperature Range: –40°C to +85°C
5-mm × 5-mm, 32-pin, QFN (RHB) Package
ESD Protection Exceeds 2 kV (HBM)
APPLICATIONS
•
•
Low Jitter Clock Driver for High-End Datacom
Applications Including SONET, Ethernet, Fibre
Channel, Serial ATA, and HDTV
Cost-Effective High-Frequency Crystal
Oscillator Replacement
DESCRIPTION
The CDCM61004 is a highly versatile, low-jitter
frequency synthesizer that can generate four low-jitter
clock outputs, selectable between low-voltage
positive emitter coupled logic (LVPECL), low-voltage
differential signaling (LVDS), or low-voltage
complementary
metal
oxide
semiconductor
(LVCMOS) outputs, from a low-frequency crystal or
LVCMOS input for a variety of wireline and data
communication applications. The CDCM61004
features an onboard PLL that can be easily
configured solely through control pins. The overall
output random jitter performance is less than 1ps,
RMS (from 10 kHz to 20 MHz), making this device a
perfect choice for use in demanding applications such
as SONET, Ethernet, Fibre Channel, and SAN. The
CDCM61004 is available in a small, 32-pin, 5-mm ×
5-mm QFN package.
1
space
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
space
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2009, Texas Instruments Incorporated
CDCM61004
SCAS871C – FEBRUARY 2009 – REVISED JULY 2009 ................................................................................................................................................... www.ti.com
DESCRIPTION, CONTINUED
The CDCM61004 is a high-performance, low phase noise, fully-integrated voltage-controlled oscillator (VCO)
clock synthesizer with four universal output buffers that can be configured to be LVPECL, LVDS, or LVCMOS
compatible. Each universal output can also be converted to two LVCMOS outputs. Additionally, an LVCMOS
bypass output clock is available in an output configuration which can help with crystal loading in order to achieve
an exact desired input frequency. It has one fully-integrated, low-noise, LC-based VCO that operates in the 1.75
GHz to 2.05 GHz range.
The phase-locked loop (PLL) synchronizes the VCO with respect to the input, which can either be a
low-frequency crystal or a low-noise LVCMOS input. The output share an output divider sourced from the VCO
core. All device settings are managed through a control pin structure, which has two pins that control the
prescaler and feedback divider, three pins that control the output divider, two pins that control the output type,
and one pin that controls the output enable. Any time the PLL settings (including the input frequency, prescaler
divider, or feedback divider) are altered, a reset must be issued through the Reset control pin (active low for
device reset). The reset initiates a PLL recalibration process to ensure PLL lock. When the device is in reset, the
outputs and dividers are turned off.
The output frequency (fOUT) is proportional to the frequency of the input clock (fIN). The feedback divider, output
divider, and VCO frequency set fOUT with respect to fIN. For a configuration setting for common wireline and
datacom applications, refer to Table 2. For other applications, use Equation 1 to calculate the exact crystal
oscillator frequency required for the desired output.
Output Divider f
fIN =
Feedback Divider OUT
(1)
(
(
The output divider can be chosen from 1, 2, 3, 4, 6, or 8 through the use of control pins. Feedback divider and
prescaler divider combinations can be chosen from 25 and 3, 24 and 3, 20 and 4, or 15 and 5, respectively, also
through the use of control pins. Figure 1 shows a high-level block diagram of the CDCM61004.
The device operates in a 3.3-V supply environment and is characterized for operation from –40°C to +85°C.
RSTN
PR[1...0]
OD[2...0]
2
3
PFD
Charge Pump
Loop Filter
Crystal/
LVCMOS
Feedback
Divider
Prescaler
VCO
Output Divider
CDCM61004
Output
Driver
LVPECL/
LVCMOS/
LVDS
Output
Driver
LVPECL/
LVCMOS/
LVDS
Output
Driver
LVPECL/
LVCMOS/
LVDS
Output
Driver
LVPECL/
LVCMOS/
LVDS
3.3 V
LVCMOS
CE
2
OS[1...0]
Figure 1. CDCM61004 Block Diagram
2
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This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.
ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more
susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.
AVAILABLE OPTIONS (1)
TA
–40°C to +85°C
(1)
(2)
PACKAGED DEVICES
FEATURES (2)
CDCM61004RHBT
32-pin QFN (RHB) package, small tape and reel
CDCM61004RHBR
32-pin QFN (RHB) package, tape and reel
For the most current specifications and package information, see the Package Option Addendum located at the end of this data sheet or
refer to our web site at www.ti.com.
These packages conform to Lead (Pb)-free and green manufacturing specifications. Additional details including specific material
contentcan be accessed at www.ti.com/leadfree. GREEN: TI defines Green to mean Lead (Pb)-Free and in addition, uses less package
materials that do not contain halogens, including bromine (Br), or antimony (Sb) above 0.1%of total product weight. N/A: Not yet
available Lead (Pb)-Free; for estimated conversion dates, go to www.ti.com/leadfree. Pb-FREE: TI defines Lead (Pb)-Free to mean
RoHS compatible, including a lead concentration that does not exceed 0.1% of total product weight, and, if designed to be soldered,
suitable for use in specified lead-free soldering processes.
ABSOLUTE MAXIMUM RATINGS (1)
Over operating free-air temperature range (unless otherwise noted).
PARAMETER
VCC_OUT,
VCC_PLL1,
VCC_PLL2,
VCC_VCO,
VCC_IN
Supply voltage range (2)
VIN
Input voltage range (3)
VOUT
Output voltage range (3)
IIN
Input current
IOUT
Output current
TSTG
Storage temperature range
(1)
(2)
(3)
VALUE
UNIT
–0.5 to 4.6
V
–0.5 to (VCC_IN + 0.5)
V
–0.5 to (VCC_OUT + 0.5)
V
20
mA
50
mA
–65 to +150
°C
Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions beyond those indicated under recommended operating
condition is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
All supply voltages must be supplied simultaneously.
Input and output negative voltage ratings may be exceeded if the input and output clamp-current ratings are observed.
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RECOMMENDED OPERATING CONDITIONS
Over operating free-air temperature range (unless otherwise noted).
MIN
NOM
MAX
UNIT
VCC_OUT
Output supply voltage
PARAMETER
3.0
3.30
3.60
V
VCC_PLL1
PLL supply voltage
3.0
3.30
3.60
V
VCC_PLL2
PLL supply voltage
3.0
3.30
3.60
V
VCC_VCO
On-chip VCO supply voltage
3.0
3.30
3.60
V
VCC_IN
Input supply voltage
3.0
3.30
3.60
V
TA
Ambient temperature
–40
+85
°C
DISSIPATION RATINGS (1) (2)
VALUE
PARAMETER
θJA
Thermal resistance, junction-to-ambient
θJP (3)
(1)
(2)
(3)
4
TEST
CONDITIONS
4 × 4 VIAS
ON PAD
UNIT
0 LFM
35
°C/W
4
°C/W
Thermal resistance, junction-to-pad
The package thermal resistance is calculated in accordance with JESD 51 and JEDEC 2S2P (high-K board).
Connected to GND with nine thermal vias (0.3-mm diameter).
θJP (junction-to-pad) is used for the QFN package, because the primary heat flow is from the junction to the GND pad of the QFN
package.
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ELECTRICAL CHARACTERISTICS
At VCC = 3 V to 3.6 V, TA = –40°C to +85°C, unless otherwise noted.
CDCM61004
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
28.47
MHz
LVCMOS Input Characteristics
fIN
Reference input frequency
21.875
VIH
Input high voltage
0.6VCC
VIL
Input low voltage
IIH
Input high current
IIL
Input low current
ΔV/ΔT
Reference input edge rate
20% to 80%
DutyREF
Reference input duty cycle
V
0.4VCC
V
VCC = 3.6 V, VIL = 0 V
200
µA
VCC = 3 V, VIH = 3.6 V
–200
0.75
µA
V/ns
40
60
%
21.875
28.47
MHz
43.75
250
MHz
LVCMOS Output Characteristics (1) (See Figure 9 and Figure 10)
fOSC_OUT
Bypass output frequency
fOUT
Output frequency
VOH
Output high voltage
VCC = min to max, IOH = –100 µA
VOL
Output low voltage
VCC = min to max, IOL = 100 µA
tRJIT
RMS phase jitter
250 MHz (10 kHz to 20 MHz)
tSLEW-RATE
Output rise/fall slew rate
20% to 80%
ODC
Output duty cycle
tSKEW
Skew between outputs
ICC,
LVCMOS
Device current, LVCMOS
LVPECL Output Characteristics
V
0.3
(2)
V
0.85 ps, RMS
2.4
V/ns
45
55
%
60
ps
205
mA
43.75
683.264
MHz
VCC –1.18
VCC –0.73
V
VCC –2
VCC –1.55
V
0.6
1.23
V
fIN = 25 MHz, fOUT = 250 MHz, CL = 5 pF
175
(See Figure 11 and Figure 12)
fOUT
Output frequency
VOH
Output high voltage
VOL
Output low voltage
|VOD|
Differential output voltage
tRJIT
RMS phase jitter
625 MHz (10 kHz to 20 MHz)
tR/tF
Output rise/fall time
20% to 80%
ODC
Output duty cycle
tSKEW
Skew between outputs
ICC,
LVPECL
Device current, LVPECL
(1)
(2)
VCC –0.5
0.77 ps, RMS
175
45
fIN = 25 MHz, fOUT = 625 MHz
180
ps
55
%
30
ps
215
mA
Figure 9 and Figure 10 show dc and ac test setups, respectively. Jitter measurements made using 25-MHz quartz crystal in.
Figure 11 and Figure 12 show dc and ac test setups, respectively. Jitter measurements made using 25-MHz quartz crystal in.
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ELECTRICAL CHARACTERISTICS (continued)
At VCC = 3 V to 3.6 V, TA = –40°C to +85°C, unless otherwise noted.
CDCM61004
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
MHz
LVDS Output Characteristics (3) (See Figure 13 and Figure 14)
fOUT
Output frequency
43.75
683.264
|VOD|
Differential output voltage
0.247
0.454
ΔVOD
VDD magnitude change
VOS
Common-mode voltage
ΔVOS
VOS magnitude change
tRJIT
RMS phase jitter
625 MHz (10 kHz to 20 MHz)
tR/tF
Output rise/fall time
20% to 80%
ODC
Output duty cycle
tSKEW
Skew between outputs
ICC, LVDS
Device current, LVDS
(3)
50
1.125
1.375
50
V
mV
V
mV
0.73 ps, RMS
255
45
fIN = 25 MHz, fOUT = 625 MHz
150
ps
55
%
40
ps
195
mA
Figure 13 and Figure 14 show dc and ac test setups, respectively. Jitter measurements made using 25-MHz quartz crystal in.
TYPICAL OUTPUT PHASE NOISE CHARACTERISTICS
Over operating free-air temperature range (unless otherwise noted).
CDCM61004
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
250-MHz LVCMOS Output (1) (see Figure 10)
phn100
Phase noise at 100-Hz offset
–95
dBc/Hz
phn1k
phn10k
Phase noise at 1-kHz offset
–110
dBc/Hz
Phase noise at 10-kHz offset
–117
dBc/Hz
phn100k
Phase noise at 100-kHz offset
–120
dBc/Hz
phn1M
Phase noise at 1-MHz offset
–135
dBc/Hz
phn10M
Phase noise at 10-MHz offset
–148
dBc/Hz
phn20M
Phase noise at 20-MHz offset
–148
dBc/Hz
tRJIT
RMS phase jitter from 10 kHz to 20 MHz
544
fs, RMS
tPJIT
Total period jitter
27.4
ps, PP
tSTARTUP
Start-up time, power supply ramp time of 1 ms,
final frequency accuracy of ±10 ppm
2.25
ms
625-MHz LVPECL Output (2) (see Figure 12)
phn100
Phase noise at 100-Hz offset
–81
dBc/Hz
phn1k
Phase noise at 1-kHz offset
–101
dBc/Hz
phn10k
Phase noise at 10-kHz offset
–109
dBc/Hz
phn100k
Phase noise at 100-kHz offset
–112
dBc/Hz
phn1M
Phase noise at 1-MHz offset
–129
dBc/Hz
phn10M
Phase noise at 10-MHz offset
–146
dBc/Hz
phn20M
Phase noise at 20-MHz offset
–146
dBc/Hz
tRJIT
RMS phase jitter from 10 kHz to 20 MHz
509
fs, RMS
tPJIT
Total period jitter
26.9
ps, PP
tSTARTUP
Start-up time, power supply ramp time of 1 ms,
final frequency accuracy of ±10 ppm
2.25
ms
(1)
(2)
6
Figure 10 shows test setup and uses 25-MHz quartz crystal in, VCC = 3.3 V, TA = +25°C.
Figure 12 shows test setup and uses 25-MHz quartz crystal in, VCC = 3.3 V, TA = +25°C.
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TYPICAL OUTPUT PHASE NOISE CHARACTERISTICS (continued)
Over operating free-air temperature range (unless otherwise noted).
CDCM61004
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
625-MHz LVDS Output (3) (see Figure 14)
phn100
Phase noise at 100-Hz offset
–88
dBc/Hz
phn1k
Phase noise at 1-kHz offset
–102
dBc/Hz
phn10k
Phase noise at 10-kHz offset
–109
dBc/Hz
phn100k
Phase noise at 100-kHz offset
–112
dBc/Hz
phn1M
Phase noise at 1-MHz offset
–129
dBc/Hz
phn10M
Phase noise at 10-MHz offset
–146
dBc/Hz
phn20M
Phase noise at 20-MHz offset
–146
dBc/Hz
tRJIT
RMS phase jitter from 10 kHz to 20 MHz
510
fs, RMS
tPJIT
Total period jitter
27
ps, PP
tSTARTUP
Start-up time, power supply ramp time of 1 ms,
final frequency accuracy of ±10 ppm
(3)
2.25
ms
Figure 14 shows test setup and uses 25-MHz quartz crystal in, VCC = 3.3 V, TA = +25°C.
TYPICAL OUTPUT JITTER CHARACTERISTICS (1)
OUTPUT
FREQUENCY
(MHz)
INPUT (MHz)
tRJIT (fs, RMS)
tPJIT (psPP)
tRJIT (fs, RMS)
tPJIT (psPP)
tRJIT (fs, RMS)
tPJIT (psPP)
62.5
25
592
32.9
611
20.7
667
28.4
75
25
518
27.5
533
19.4
572
25.7
77.76
24.8832
506
29.2
526
20.9
567
26.9
100
25
507
24.5
510
20.7
533
26.5
106.25
26.5625
535
23.5
524
20.2
553
26.5
125
25
557
39.6
556
21.4
570
27.1
150
25
518
38.4
493
18.9
515
26.2
155.52
24.8832
498
36.9
486
19.8
502
26.7
156.25
25
510
37.7
503
20.7
518
26.5
159.375
26.5625
535
37.4
510
19.9
534
26.3
187.5
25
506
32.8
506
20.3
509
25.5
200
25
491
23.3
492
30
499
34.9
212.5
26.5625
520
47.8
509
30.8
530
37.3
250
25
544
27.4
541
21.4
550
27.5
311.04
24.8832
481
20.5
496
24.7
(1)
LVCMOS OUTPUT
LVPECL OUTPUT
LVDS OUTPUT
312.5
25
501
20.8
508
25.8
622.08
24.8832
492
27.2
500
27.2
625
25
515
26.9
509
27
Figure 10, Figure 12, and Figure 14 show LVCMOS, LVPECL, and LVDS test setups (respectively) using appropriate quartz crystal in,
VCC = 3.3 V, TA = +25°C.
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CRYSTAL CHARACTERISTICS
PARAMETER
MINIMUM
TYPICAL
Mode of oscillation
MAXIMUM
Fundamental
Frequency
21.875
On-chip load capacitance
8
Drive level
MHz
28.47
Equivalent series resistance (ESR)
0.1
Maximum shunt capacitance
UNIT
MHz
50
Ω
10
pF
1
mW
7
pF
DEVICE INFORMATION
8
OUTP2
OUTN2
VCC_OUT
OUTP3
OUTN3
VCC_OUT
PR1
PR0
RHB PACKAGE
QFN-32
(TOP VIEW)
32
31
30
29
28
27
26
25
VCC_OUT
1
24
NC
OUTN1
2
23
OSC_OUT
OUTP1
3
22
GND1
VCC_OUT
4
21
XIN
OUTN0
5
20
VCC_IN
OUTP0
6
19
REG_CAP1
CE
7
18
VCC_PLL1
NC
8
17
REG_CAP2
CDCM61004
9
10
11
12
13
14
15
16
VCC_VCO
OS1
OS0
RSTN
OD0
OD1
OD2
VCC_PLL2
Thermal Pad
(must be soldered to ground)
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PIN FUNCTIONS
TERMINAL
NAME
DIRECTION (1)
PAD NO.
TYPE
VCC_OUT
1, 4, 27, 30
Power
3.3-V supply for the output buffers
DESCRIPTION
VCC_PLL1
18
Power
3.3-V supply for the PLL circuitry
VCC_PLL2
16
Power
3.3-V supply for the PLL circuitry
VCC_VCO
9
Power
3.3-V supply for the internal VCO
VCC_IN
20
Power
3.3-V supply for the input buffers
GND1
22
Ground
Additional ground for device. (GND1 shorted on-chip to GND)
GND
Pad
Ground
Ground is on thermal pad. See Thermal Management.
XIN
21
Input
OUTP0,
OUTN0
6, 5
Output
Differential output pair or two single-ended outputs
OUTP1,
OUTN1
3, 2
Output
Differential output pair or two single-ended outputs
OUTP2,
OUTN2
32, 31
Output
Differential output pair or two single-ended outputs
OUTP3,
OUTN3
29, 28
Output
Differential output pair or two single-ended outputs
OSC_OUT
23
Output
Bypass LVCMOS output
REG_CAP1
19
Output
Capacitor for internal regulator (connect to a 10-µF Y5V capacitor to
GND)
REG_CAP2
17
Output
Capacitor for internal regulator (connect to a 10-µF Y5V capacitor to
GND)
PR1, PR0
26, 25
Input
Pullup
Prescaler and Feedback divider control pins (see Table 4)
OD2, OD1,
OD0
15, 14, 13
Input
Pullup
Output divider control pins (see Table 5)
OS1, OS0
Parallel resonant crystal/LVCMOS input
10, 11
Input
Pullup
Output type select control pin (see Table 6)
CE
7
Input
Pullup
Chip enable control pin (see Table 7)
RSTN
12
Input
Pullup
Device reset (active low) (see Table 8)
NC
(1)
8, 24
No connection
Pullup and Pulldown refer to internal input resistors. See Table 1, Pin Characteristics for typical values.
Table 1. PIN CHARACTERISTICS
SYMBOL
CIN
RPULLUP
RPULLDOWN
PARAMETER
MIN
Input capacitance
TYP
MAX
UNIT
8
10
pF
Input pullup resistor
150
kΩ
Input pulldown resistor
150
kΩ
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PACKAGE
Figure 2. RHB Package
10
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FUNCTIONAL BLOCK DIAGRAM
VCC_IN
VCC_PLL1
XO
LVCMOS
XIN
VCC_PLL2
Phase
Frequency
Detector
21.875 MHz
to 28 .47 MHz
VCC_VCO
VCC_VDD
VCC_OUT
Loop Filter
Charge
Pump
224 mA
400 kHz
¸15
FB_MUX
¸5
VCO
1.75 GHz
to 2.05 GHz
¸20
¸4
¸24
RSTN
¸3
Prescaler
Divider
¸25
Feedback
Divider
LVCMOS
¸1
PR1
DIV_MUX
PR0
¸2
LVPECL
OUTP[1...0]
¸3
4
¸4
LVDS
OUTN[1...0]
¸6
REG_CAP1
¸8
LVCMOS
Output
Divider
REG_CAP2
LVCMOS
OSC_OUT
CDCM61004
CE
GND1
OD2 OD1 OD0
OS1 OS0
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DEVICE CONFIGURATION
Table 2. Common Configuration
INPUT (MHz)
PRESCALER
DIVIDER
FEEDBACK
DIVIDER
VCO
FREQUENCY
(MHz)
OUTPUT
DIVIDER
OUTPUT
FREQUENCY
(MHz)
APPLICATION
25
4
20
2000
8
62.5
GigE
24.75
4
20
1980
8
74.25
HDTV
25
3
24
1800
8
75
SATA
24.8832
3
25
1866.24
8
77.76
25
3
24
1800
6
100
26.5625
3
24
1912.5
6
106.25
25
4
20
2000
4
125
GigE
25
3
24
1800
4
150
SATA
24.8832
3
25
1866.24
4
155.52
SONET
25
3
25
1875
4
156.25
10 GigE
26.5625
3
24
1912.5
4
159.375
10-G Fibre Channel
25
5
15
1875
2
187.5
25
3
24
1800
3
200
26.5625
3
24
1912.5
3
212.5
25
4
20
2000
2
250
24.8832
3
25
1866.24
2
311.04
SONET
SONET
PCI Express
Fibre Channel
12 GigE
PCI Express
4-G Fibre Channel
GigE
25
3
25
1875
2
312.5
XGMII
24.8832
3
25
1866.24
1
622.08
SONET
25
3
25
1875
1
625
10 GigE
Table 3. Generic Configuration
INPUT FREQUENCY
RANGE (MHz)
PRESCALER
DIVIDER
FEEDBACK
DIVIDER
VCO FREQUENCY
RANGE (MHz)
OUTPUT DIVIDER
OUTPUT
FREQUENCY
RANGE (MHz)
21.875 to 25.62
4
20
1750 to 2050
8
54.6875 to 64.05
21.875 to 25.62
4
20
1750 to 2050
6
72.92 to 85.4
21.875 to 25.62
4
20
1750 to 2050
4
109.375 to 128.1
21.875 to 25.62
4
20
1750 to 2050
3
145.84 to 170.8
21.875 to 25.62
4
20
1750 to 2050
2
218.75 to 256.2
21.875 to 25.62
4
20
1750 to 2050
1
437.5 to 512.4
23.33 to 27.33
3
25
1750 to 2050
8
72.906 to 85.408
23.33 to 27.33
3
25
1750 to 2050
6
97.21 to 113.875
23.33 to 27.33
3
25
1750 to 2050
4
145.812 to 170.816
23.33 to 27.33
3
25
1750 to 2050
3
194.42 to 227.75
23.33 to 27.33
3
25
1750 to 2050
2
291.624 to 341.632
23.33 to 27.33
3
25
1750 to 2050
1
583.248 to 683.264
23.33 to 27.33
5
15
1750 to 2050
8
43.75 to 51.25
23.33 to 27.33
5
15
1750 to 2050
6
58.33 to 68.33
23.33 to 27.33
5
15
1750 to 2050
4
87.5 to 102.5
23.33 to 27.33
5
15
1750 to 2050
3
116.66 to 136.66
23.33 to 27.33
5
15
1750 to 2050
2
175 to 205
23.33 to 27.33
5
15
1750 to 2050
1
350 to 410
24.305 to 28.47
3
24
1750 to 2050
8
72.915 to 85.41
24.305 to 28.47
3
24
1750 to 2050
6
97.22 to 113.88
12
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Table 3. Generic Configuration (continued)
INPUT FREQUENCY
RANGE (MHz)
PRESCALER
DIVIDER
FEEDBACK
DIVIDER
VCO FREQUENCY
RANGE (MHz)
OUTPUT DIVIDER
OUTPUT
FREQUENCY
RANGE (MHz)
24.305 to 28.47
3
24
1750 to 2050
4
145.83 to 170.82
24.305 to 28.47
3
24
1750 to 2050
3
194.44 to 227.76
24.305 to 28.47
3
24
1750 to 2050
2
291.66 to 341.64
24.305 to 28.47
3
24
1750 to 2050
1
583.32 to 683.28
Table 4. Programmable Prescaler and Feedback Divider Settings
CONTROL INPUTS
FEEDBACK
DIVIDER
PFD FREQUENCY
PR1
PR0
PRESCALER
DIVIDER
MINIMUM
MAXIMUM
0
0
3
24
24.305
28.47
0
1
5
15
23.33
27.33
1
0
3
25
23.33
27.33
1
1
4
20
21.875
25.62
Table 5. Programmable Output Divider
CONTROL INPUTS
OD2
OD1
OD0
OUTPUT DIVIDER
0
0
0
1
0
0
1
2
0
1
0
3
0
1
1
4
1
0
0
Reserved
1
0
1
6
1
1
0
Reserved
1
1
1
8
Table 6. Programmable Output Type
CONTROL INPUTS
OS1
OS0
OUTPUT TYPE
0
0
LVCMOS, OSC_OUT Off
0
1
LVDS, OSC_OUT Off
1
0
LVPECL, OSC_OUT Off
1
1
LVPECL, OSC_OUT On
Table 7. Output Enable
CONTROL INPUT
CE
OPERATING
CONDITION
0
Power Down
Hi-Z
1
Normal
Active
OUTPUT
Table 8. Reset
CONTROL INPUT
RSTN
OPERATING
CONDITION
OUTPUT
0
Device Reset
Hi-Z
0→1
PLL Recalibration
Hi-Z
1
Normal
Active
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TYPICAL CHARACTERISTICS
Over operating free-air temperature range (unless otherwise noted).
TYPICAL CURRENT CONSUMPTION FOR LVPECL OUTPUT
vs OUTPUT FREQUENCY
205
Output-divide-by-8
Output-divide-by-6
Output-divide-by-4
200
Output-divide-by-3
Supply Current (mA)
Output-divide-by-2
Output-divide-by-1
195
190
185
180
0
200
400
600
800
Output Frequency (MHz)
Figure 3.
TYPICAL CURRENT CONSUMPTION FOR LVDS OUTPUT
vs OUTPUT FREQUENCY
170
Output-divide-by-8
Output-divide-by-6
Output-divide-by-4
165
Output-divide-by-3
Supply Current (mA)
Output-divide-by-2
Output-divide-by-1
160
155
150
145
0
200
400
600
800
Output Frequency (MHz)
Figure 4.
14
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TYPICAL CHARACTERISTICS (continued)
Over operating free-air temperature range (unless otherwise noted).
TYPICAL CURRENT CONSUMPTION FOR LVCMOS OUTPUT
WITH 5-pF LOAD vs OUTPUT FREQUENCY
185
175
Supply Current (mA)
165
155
145
135
Output-divide-by-8
125
Output-divide-by-6
Output-divide-by-4
115
Output-divide-by-3
Output-divide-by-2
105
0
50
100
150
200
250
300
Output Frequency (MHz)
Figure 5.
TYPICAL LVPECL DIFFERENTIAL OUTPUT VOLTAGE
vs OUTPUT FREQUENCY
0.77
Differential Output Voltage, VOD (V)
0.76
0.75
0.74
0.73
0.72
0.71
0.70
0
100
200
300
400
500
600
700
Output Frequency (MHz)
Figure 6.
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TYPICAL CHARACTERISTICS (continued)
Over operating free-air temperature range (unless otherwise noted).
TYPICAL LVDS DIFFERENTIAL OUTPUT VOLTAGE
vs OUTPUT FREQUENCY
0.42
Differential Output Voltage, VDO (V)
0.40
0.38
0.36
0.34
0.32
0.30
0
100
200
300
400
500
600
700
Output Frequency (MHz)
Figure 7.
TYPICAL LVCMOS OUTPUT VOLTAGE WITH 5-pF LOAD
vs OUTPUT FREQUENCY
3.30
Output Voltage, VOUT (V)
3.25
3.20
3.15
3.10
3.05
3.00
50
100
150
200
250
Output Frequency (MHz)
Figure 8.
16
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TEST CONFIGURATIONS
This section describes the function of each block for the CDCM61004. Figure 9 through Figure 15 illustrate how
the device should be set up for a variety of output configurations.
LVCMOS
5 pF
Figure 9. LVCMOS Output Loading During Device Test
Phase Noise
Analyzer
LVCMOS
Figure 10. LVCMOS AC Configuration During Device Test
Oscilloscope
LVPECL
50 W
50 W
VCC - 2V
Figure 11. LVPECL DC Configuration During Device Test
Phase Noise
Analyzer
LVPECL
150 W
150 W
50 W
Figure 12. LVPECL AC Configuration During Device Test
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100 W
LVDS
Oscilloscope
Figure 13. LVDS DC Configuration During Device Test
Phase Noise
Analyzer
LVDS
50 W
Figure 14. LVDS AC Configuration During Device Test
VOH
Yx
VOD
VOL
Yx
80%
VOUTpp
20%
0V
tr
tf
Figure 15. Output Voltage and Rise/Fall Times
18
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FUNCTIONAL DESCRIPTION
Phase-Locked Loop (PLL)
The CDCM61004 includes an on-chip PLL with an on-chip VCO. The PLL blocks consist of a crystal input
interface, which can also accept an LVCMOS signal, a phase frequency detector (PFD), a charge pump, an
on-chip loop filter, and prescaler and feedback dividers. Completing the CDCM61004 device are the output
divider and universal output buffer.
The PLL is powered by on-chip, low-dropout (LDO) linear voltage regulators. The regulated supply network is
partitioned such that the sensitive analog supplies are powered from separate LDOs rather than the digital
supplies which use a separate LDO regulator. These LDOs provide isolation for the PLL from any noise in the
external power-supply rail. The REG_CAP1 and REG_CAP2 pins should each be connected to ground by 10-µF
capacitors to ensure stability.
Configuring the PLL
The CDCM61004 permits PLL configurations to accommodate the various input and output frequencies listed in
Table 2 and Table 3. These configurations are accomplished by setting the prescaler divider, feedback divider
and output divider. The various dividers are managed by setting the device control pins as shown in Table 4 and
Table 5. For each control pin that must be set to a '1', it is recommended to use an external onboard 10-kΩ
resistor to the chip supply.
Crystal Input Interface
The recommended oscillation mode for the input crystal is fundamental mode, with a parallel resonance circuit
configuration for the crystal.
Crystal load capacitance refers to all capacitances in the oscillator feedback loop. It is equal to the amount of
capacitance seen between the terminals of the crystal in the circuit. For parallel resonant mode circuits, the
correct load capacitance is necessary to ensure the oscillation of the crystal within the expected parameters.
The CDCM61004 implements an input crystal oscillator circuit architecture that requires the input crystal to
interface with one terminal while its other terminal is tied to ground. In this crystal interface, it is important to
account for all sources of capacitance when calculating the correct value for the discrete capacitor component,
CL, for a given design.
The CDCM61004 has been characterized with 20-pF parallel resonant crystals. The input crystal oscillator stage
in the CDCM61004 is designed to minimize the capacitance required to be added for the 24.8832-MHz, 25-MHz,
or 26.5625-MHz crystals to resonate at the correct frequency. The capacitor values shown in Figure 16 were
determined using the 20-pF parallel resonant crystals at 24.8832 MHz, 25 MHz, or 26.5625 MHz and checked for
minimal ppm error measured at the OSC_OUT pin. This error value can also be calculated from the discrete
capacitor component, CL, required on the XIN pin if the input capacitance on the XIN pin is known (10 pF
maximum), in order to match the 20-pF rating. However, it is recommended to use a 10-pF parallel resonant
crystal to drive the CDCM61004 and in this case, no additional external capacitors are needed to tune the crystal
frequency.
Table 9 lists several recommended crystals and the respective manufacturer of each.
XIN
10 pF
CDCM61004
Figure 16. Crystal Input Interface
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Table 9. Recommended Crystal Manufacturers
MANUFACTURER
PART NUMBER
Ecliptek
ECCM1B
Epson-Toyocom
TSX-5032
Abracon
ABM3
LVCMOS Input Interface
Alternately, the CDCM61004 can be operated with an external LVCMOS reference input applied to the XIN pin,
which has internal biasing. Figure 17 shows the recommended method to interface an LVCMOS signal with the
CDCM61004 through an ac coupling capacitor.
LVCMOS
XIN
0.1 mF
CDCM61004
Figure 17. LVCMOS Input Interface
Phase Frequency Detector (PFD)
The PFD takes inputs from the input interface and the feedback divider and produces an output that depends on
the phase and frequency differences between the two inputs. The allowable range of frequencies at the PFD
inputs is 21.875 MHz to 28.47 MHz.
Charge Pump (CP)
The charge pump is controlled by the PFD, which dictates either to pump up or down in order to charge or
discharge the integrating section of the on-chip loop filter. The integrated and filtered charge pump current is then
converted to a voltage that drives the control voltage node of the internal VCO through the on-chip loop filter. The
charge pump current is preset to 224 µA and cannot be changed.
On-Chip PLL Loop Filter
Figure 18 shows the on-chip active loop filter topology implemented in the device. This design corresponds to a
PLL bandwidth of 400 kHz for a PFD in the range of 21.875 MHz to 28.47 MHz, and a charge pump current of
224 µA.
473.5 pF
Charge Pump
Output
20 kW
15 kW
VCO Control
Figure 18. On-Chip PLL Loop Filter Topology
Prescaler Divider and Feedback Divider
The VCO output is routed to the prescaler divider and then to the feedback divider. The prescaler divider and
feedback divider are set in tandem with each other, according to the control pin settings given in Table 4. The
allowable combinations of the two dividers ensure that the VCO frequency and the PFD frequency are within the
specified limits.
20
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On-Chip VCO
The CDCM61004 includes an on-chip, LC oscillator-based VCO with low phase noise covering a frequency
range of 1.75 GHz to 2.05 GHz. The VCO must be calibrated to ensure proper operation over the valid device
operating conditions. VCO calibration is controlled by a divided-down reference clock input. This calibration
requires that the PLL be set up properly to lock the PLL loop and that the reference clock input be present.
During the first device initialization after power-up, which occurs after the Power On Reset is released (2.64 V or
lower, over valid device operating conditions) or a device reset with the RSTN pin, a VCO calibration sequence is
initiated after 16,384 × Reference Input Clock Cycles. The VCO calibration then takes about 20 µs over the
allowable range of the reference clock input.
The VCO calibration can also be reinitiated with a pulse on the RSTN pin at any time after POR is released on
power-up; the RSTN pulse must be at least 100 ns wide.
Output Divider
The output from the prescaler divider is also routed to the output divider. The output divider can be set with
control pins according to Table 5.
Output Buffer
Each output buffer can be set to LVPECL or LVDS or 2x LVCMOS, according to Table 6. OSC_OUT is an
LVCMOS output that can be used in test mode to monitor proper loading of the input crystal in order to achieve
the necessary crystal frequency with the least error. The output buffers are disabled during VCO calibration and
are enabled only after calibration is complete.
The output buffers on the CDCM61004 can also be disabled, along with other sections of the device, using the
CE pin according to Table 7.
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APPLICATION INFORMATION
Start-up Time Estimation
The CDCM61004 startup time can be estimated based on the parameters defined in Table 10 and graphically
shown in Figure 19.
Table 10. Start-up Time Dependencies
PARAMETER
DEFINITION
FORMULA/METHOD OF
DETERMINATION
DESCRIPTION
1
tREF
Reference clock period
The reciprocal of the applied reference
frequency in seconds.
tpul
Power-up time (low limit)
Power-supply rise time to low limit of Power
On Reset (POR) trip point
Time required for power
supply to ramp to 2.27 V
tpuh
Power-up time (high limit)
Power supply rise time to high limit of POR
trip point
Time required for power
supply to ramp to 2.64 V
trsu
Reference start-up time
After POR releases, the Colpits oscillator is
enabled. This start-up time is required for the
oscillator to generate the requisite signal
levels for the delay block to be clocked by
the reference input.
500 µs best-case and 800 µs
worst-case (for a crystal
input).
0 s (for an LVCMOS input).
tdelay
Delay time
Internal delay time generated from the
reference clock. This delay provides time for
the reference oscillator to stabilize.
tdelay= 16384 × tref
tVCO_CAL
VCO calibration time
VCO Calibration Time generated from the
reference clock. This process selects the
operating point for the VCO based on the
PLL settings.
tVCO_CAL= 550 × tref
tPLL_LOCK
PLL lock time
Time required for PLL to lock within ±10 ppm
of fREF
Based on the 400-kHz loop
bandwidth, the PLL settles in
5τ or 12.5 µs.
Power Supply (V)
Power up
Reference
Startup
Delay
VCO Calibration
tREF =
fREF
PLL Lock
2.64 V
2.27 V
tpul
trsu
tpuh
Time (s)
tVCO_CAL
tPLL_LOCK
tdelay
Figure 19. Start-up Time Dependencies
22
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The CDCM61004 start-up time limits, tMAX and tMIN, can be calculated as follows:
tMAX = tpuh + trsu + tdelay + tVCO_CAL + tPLL_LOCK
tMIN = tpul + trsu + tdelay + tVCO_CAL + tPLL_LOCK
Power Considerations
As a result of the different possible configurations of the CDCM61004, Table 11 is intended to provide enough
information on the estimated current consumption of the device. Unless otherwise noted, VCC = 3.3 V and TA =
+25°C.
Table 11. Estimated Block Power Consumption
BLOCK
Entire device,
core current
Output buffer
Divide circuitry
CONDITION
CURRENT CONSUMPTION
(mA)
IN-DEVICE POWER DISSIPATION
(mW)
65
214.5
Output off, no termination
resistors
LVPECL output, active mode
28
42.4
LVCMOS output pair, static
4.5
14.85
LVCMOS output pair,
transient, 'CL' load, 'f' MHz
output frequency
V × fOUT × (CL + 20 × 10–12) × 103
V2 × fOUT × (CL + 20 × 10–12) × 103
LVDS output, active mode
20
66
Divide enabled, divide = 1
5
16.5
Divide enabled, divide = 2
10
33
Divide enabled, divide = 3, 4
15
49.5
Divide enabled, divide = 6, 8
20
66
EXTERNAL
RESISTOR
POWER
DISSIPATION
(mW)
50
From Table 11, the current consumption can be calculated for any configuration. For example, the current for the
entire device with four LVPECL outputs in active mode can be calculated by adding up the following blocks: core
current, 4x LVPECL output buffer current, and the divide circuitry current. The overall in-device power
consumption can also be calculated by summing the in-device power dissipated in each of these blocks.
As an example scenario, let us consider the use case of a crystal input frequency of 25 MHz and device output
frequency of 312.5 MHz in LVPECL mode. For this case, the typical overall power dissipation can be calculated
as:
3.3 V × (65 + 4 × 28 + 10) mA = 617.1 mW
Because each LVPECL output has two external resistors and the power dissipated by these resistors is 50 mW,
the typical overall in-device power dissipation is:
610.5 mW – 4 × 50 mW = 41.7 mW
When the LVPECL output is active, the average voltage is approximately 1.9 V on each output as calculated
from the LVPECL VOH and VOL specifications. Therefore, the power dissipated in each emitter resistor is
approximately (1.9 V)2/150Ω = 25 mW.
When the LVCMOS output is active and drives a load capacitance, CL, the overall LVCMOS output current
consumption is the sum of a static pre-driver current and a dynamic switching current (which is a function of the
output frequency and the load capacitance).
Let us consider another use case of a crystal input frequency of 26.5625 MHz and device output frequency of
212.5 MHz in LVCMOS mode and driving a 5-pF load capacitance with a typical signal swing of 3.18 V. For this
case, the typical overall power dissipation can be calculated as:
3.3 V × (65 + 15 + 4 × 21.4) mA = 546.48 mW
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Thermal Management
Power consumption of the CDCM61004 can be high enough to require attention to thermal management. For
reliability and performance reasons, the die temperature should be limited to a maximum of +125°C. That is, as
an estimate, TA (ambient temperature) plus device power consumption times θJA should not exceed +125°C.
The device package has an exposed pad that provides the primary heat removal path as well as an electrical
grounding to the printed circuit board (PCB). To maximize the removal of heat from the package, a thermal land
pattern including multiple vias to a ground plane must be incorporated on the PCB within the footprint of the
package. The exposed pad must be soldered down to ensure adequate heat conduction out of the package. A
recommended land and via pattern is shown in Figure 20.
3,0 mm
(min)
0,3 mm
(typ)
0,7 mm
(typ)
Figure 20. Recommended PCB Layout for CDCM61004
Power-Supply Filtering
PLL-based frequency synthesizers are very sensitive to noise on the power supply, which can dramatically
increase the jitter of the PLL. This characteristic is especially true for analog-based PLLs. Thus, it is essential to
reduce noise from the system power supply, especially when jitter/phase noise is very critical to applications. A
PLL would have attenuated jitter as a result of power-supply noise at frequencies beyond the PLL bandwidth
because of attenuation by the loop response.
Filter capacitors are used to eliminate the low-frequency noise from the power supply, where the bypass
capacitors provide the very low impedance path for high-frequency noise and guard the power-supply system
against the induced fluctuations. These bypass capacitors also provide instantaneous current surges as required
by the device and should have low equivalent series resistance (ESR). To properly use these bypass capacitors,
they must be placed very close to the power-supply pins and laid out with short loops to minimize inductance. It
is recommended to add as many high-frequency (for example, 0.1-µF) bypass capacitors as there are supply
pins in the package.
The CDCM61004 power-supply requirements can be grouped into two sets: the analog supply line and the
output/input supply line. The analog supply line consists of the following power-supply pins on the CDCM61004:
VCC_PLL1, VCC_PLL2, and VCC_VCO. These pins can be shorted together. The output/input supply line
consists of the VCC_OUT and the VCC_IN power-supply pins on the CDCM61004. These pins can be shorted
together. Inserting a ferrite bead between the analog supply line and the output/input supply line isolates the
high-frequency switching noises generated by the device input and outputs, preventing them from leaking into
the sensitive analog supply line. Choosing an appropriate ferrite bead with very low dc resistance is important
because it is imperative to provide adequate isolation between the sensitive analog supply line and the other
board supply lines, and to maintain a voltage at the analog power-supply pins of the CDCM61004 that is greater
than the minimum voltage required for proper operation.
24
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www.ti.com ................................................................................................................................................... SCAS871C – FEBRUARY 2009 – REVISED JULY 2009
Figure 21 shows a general recommendation for decoupling the power supply.
Board/
Output/Input
Supply
Analog
Supply
Ferrite Bead
C
10 mF
C
0.1 mF (x5)
C
10 mF
C
0.1 mF (x3)
Figure 21. Recommended Power-Supply Decoupling
Output Termination
The CDCM61004 is a 3.3-V clock driver with the following output options: LVPECL, LVDS, or LVCMOS.
LVPECL Termination
The CDCM61004 is an open emitter for LVPECL outputs. Therefore, proper biasing and termination are required
to ensure correct operation of the device and to minimize signal integrity. The proper termination for LVPECL is
50 Ω to (VCC–2) V, but this dc voltage is not readily available on most PCBs. Thus, a Thevenin equivalent circuit
is worked out for the LVPECL termination in both direct-coupled (dc) and ac-coupled cases, as shown in
Figure 22 and Figure 23. It is recommended to place all resistive components close to either the driver end or the
receiver end. If the supply voltage of the driver and receiver are different, ac-coupling is required.
130 W
130 W
VCC_OUT
VCC_OUT
CDCM61004
LVPECL
82 W
82 W
Figure 22. LVPECL Output DC Termination
VBB
CDCM61004
LVPECL
150 W
150 W
50 W
50 W
Figure 23. LVPECL Output AC Termination
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CDCM61004
SCAS871C – FEBRUARY 2009 – REVISED JULY 2009 ................................................................................................................................................... www.ti.com
LVDS Termination
The proper LVDS termination for signal integrity over two 50 Ω lines is 100 Ω between the outputs on the
receiver end. Either dc-coupled termination or ac-coupled termination can be used for LVDS outputs, as shown
in Figure 24 and Figure 25. It is recommended to place all resistive components close to either the driver end or
the receiver end. If the supply voltage of the driver and the receiver are different, ac-coupling is required.
100 W
CDCM61004
LVDS
Figure 24. LVDS Output DC Termination
100 W
CDCM61004
LVDS
Figure 25. LVDS Output AC Termination
LVCMOS Termination
Series termination is a common technique used to maintain the signal integrity for LVCMOS drivers, if connected
to a receiver with a high-impedance input with a pull-up or a pulldown resistor. For series termination, a series
resistor (RS) is placed close to the driver, as shown in Figure 26. The sum of the driver impedance and RS
should be close to the transmission line impedance, which is usually 50 Ω. Because the LVCMOS driver in the
CDCM61004 has an impedance of 30 Ω, RS is recommended to be 22 Ω to maintain proper signal integrity.
RS = 22 W
CDCM61004
LVCMOS
Figure 26. LVCMOS Output Termination
26
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CDCM61004
www.ti.com ................................................................................................................................................... SCAS871C – FEBRUARY 2009 – REVISED JULY 2009
Interfacing Between LVPECL and HCSL
Because the LVPECL common-mode voltage is different from the HCSL common-mode voltage, ac-coupled
termination is used. The 150-Ω resistor ensures proper biasing of the CDCM61004 LVPECL output stage, while
the 471-Ω and 56-Ω resistor network biases the HCSL receiver input stage, as shown in Figure 27.
471 W
471 W
VCC_OUT
VCC_OUT
0W
CDCM61004
HCSL
0W
150 W
150 W
56 W
56 W
Figure 27. LVPECL to HCSL Interface
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CDCM61004
SCAS871C – FEBRUARY 2009 – REVISED JULY 2009 ................................................................................................................................................... www.ti.com
Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision B (May, 2009) to Revision C ..................................................................................................... Page
•
•
•
•
Added sentence about parallel resonant crystal to last paragraph of Crystal Input Interface section.................................
Updated Figure 22 ...............................................................................................................................................................
Revised text in LVCMOS Termination section.....................................................................................................................
Updated Figure 27 ...............................................................................................................................................................
19
25
26
27
Changes from Revision A (April, 2009) to Revision B ................................................................................................... Page
•
28
Added Interfacing Between LVPECL and HCSL section..................................................................................................... 27
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PACKAGE OPTION ADDENDUM
www.ti.com
20-Jul-2009
PACKAGING INFORMATION
Orderable Device
Status (1)
Package
Type
Package
Drawing
Pins Package Eco Plan (2)
Qty
CDCM61004RHBR
ACTIVE
QFN
RHB
32
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-2-260C-1 YEAR
CDCM61004RHBT
ACTIVE
QFN
RHB
32
250
CU NIPDAU
Level-2-260C-1 YEAR
Green (RoHS &
no Sb/Br)
Lead/Ball Finish
MSL Peak Temp (3)
(1)
The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in
a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check
http://www.ti.com/productcontent for the latest availability information and additional product content details.
TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements
for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered
at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and
package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS
compatible) as defined above.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame
retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material)
(3)
MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder
temperature.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is
provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the
accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take
reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on
incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited
information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI
to Customer on an annual basis.
Addendum-Page 1
PACKAGE MATERIALS INFORMATION
www.ti.com
21-Jul-2009
TAPE AND REEL INFORMATION
*All dimensions are nominal
Device
Package Package Pins
Type Drawing
SPQ
Reel
Reel
Diameter Width
(mm) W1 (mm)
A0 (mm)
B0 (mm)
K0 (mm)
P1
(mm)
W
Pin1
(mm) Quadrant
CDCM61004RHBR
QFN
RHB
32
3000
330.0
12.4
5.3
5.3
1.5
8.0
12.0
Q2
CDCM61004RHBT
QFN
RHB
32
250
180.0
12.4
5.3
5.3
1.5
8.0
12.0
Q2
Pack Materials-Page 1
PACKAGE MATERIALS INFORMATION
www.ti.com
21-Jul-2009
*All dimensions are nominal
Device
Package Type
Package Drawing
Pins
SPQ
Length (mm)
Width (mm)
Height (mm)
CDCM61004RHBR
QFN
RHB
32
3000
346.0
346.0
29.0
CDCM61004RHBT
QFN
RHB
32
250
190.5
212.7
31.8
Pack Materials-Page 2
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