TI CDCLVP215RHBT Low-voltage dual differential 1:5 lvpecl clock driver Datasheet

CDCLVP215
www.ti.com.................................................................................................................................................... SCAS853A – APRIL 2008 – REVISED OCTOBER 2008
LOW-VOLTAGE DUAL DIFFERENTIAL 1:5 LVPECL
CLOCK DRIVER
FEATURES
1
QFN32 PACKAGE
(TOP VIEW)
25
16
26
15
27
14
28
13
29
12
30
11
31
10
32
9
2 3 4
VCC
1
VCC
QB2
QB2
QB3
QB3
QB4
QB4
VCC
5 6 7 8
CLKB
CLKB
VEE
APPLICATIONS
•
•
QA3
QA4
QA4
QB0
QB0
QB1
QB1
QA3
24 23 22 21 20 19 18 17
VCC
QA2
QA2
QA1
QA1
QA0
QA0
VCC
NC
CLKA
CLKA
VBB
• 2× One Differential Clock Input Pair LVPECL to
5 Differential LVPECL Clock Outputs
• Fully Compatible With LVPECL/LVECL
• Supports a Wide Supply Voltage Range From
2.375 V to 3.8 V
• Open Input Default State
• Low-Output Skew (Typ 15 ps) for
Clock-Distribution Applications
• VBB Reference Voltage Output for
Single-Ended Clocking
• Available in the QFN32 Package
• Frequency Range From DC to 3.5 GHz
• Pin-to-Pin Compatible With the MC100 Series
EP111, LVEP210, ES6111, LVEP111
2
Designed for Driving 50-Ω Transmission Lines
High Performance Clock Distribution
DESCRIPTION
The CDCLVP215 clock driver distributes two times one differential clock pair of LVPECL, (CLKA, CLKB) to 5
pairs of differential LVPECL clock (QA0..QA4, QB0..QB4) outputs with minimum skew for clock distribution. The
CDCLVP215 specifies low output-to-output skew. The CDCLVP215 is specifically designed for driving 50-Ω
transmission lines. When an output pair is not used, leaving it open is recommended to reduce power
consumption. If only one of the output pairs is used, the other output pair must be identically terminated to 50 Ω.
The VBB reference voltage output is used if single-ended input operation is required. In this case, the VBB pin
should be connected to CLKA or CLKB and bypassed to GND via a 10-nF capacitor.
However, for high-speed performance up to 3.5 GHz, the differential mode is strongly recommended.
The CDCLVP215 is characterized for operation from –40°C to 85°C.
1
2
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.
PowerPAD is a trademark of Texas Instruments.
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 © 2008, Texas Instruments Incorporated
CDCLVP215
SCAS853A – APRIL 2008 – REVISED OCTOBER 2008.................................................................................................................................................... www.ti.com
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
31
30
29
28
27
26
24
23
CLKA
+
CLKA
CLKB
+
3
22
4
21
6
20
7
19
18
CLKB
17
15
14
13
12
11
VBB
5
QA0
QA0
QA1
QA1
QA2
QA2
QA3
QA3
QA4
QA4
QB0
QB0
QB1
QB1
QB2
QB2
QB3
QB3
QB4
10
QB4
PIN FUNCTIONS
PIN
NAME
NC
DESCRIPTION
NO.
2
Not connected
CLKA, CLKA
3, 4
Differential LVECL/LVPECL input pair
CLKB, CLKB
6, 7
Differential LVECL/LVPECL input pair
Q [A0:A4]
22, 24, 27, 29, 31
LVECL/LVPECL clock outputs, these outputs provide low-skew copies of CLKA.
Q [A0:A4]
21,23, 26, 28, 30
LVECL/LVPECL complementary clock outputs, these outputs provide low-skew copies of CLKA.
Q [B0:B4]
11, 13, 15, 18, 20
LVECL/LVPECL clock outputs, these outputs provide low-skew copies of CLKB.
Q [B0:B4]
10, 12, 14, 17, 19
LVECL/LVPECL complementary clock outputs, these outputs provide low-skew copies of CLKB.
VBB
5
VCC
1, 9, 16, 25, 32
VEE
8
Reference voltage output for single-ended input operation
Supply voltage
Device ground or negative supply voltage in ECL mode
The PowerPAD™ of the QFN32 package is thermally connected to the die for improved heat transfer out of the
package. This pad is electrically connected to VEE.
• CLKn pull down resistor 75 kΩ
• CLKn pull up resistor 37.5 kΩ
• CLKn pull down resistor 50 kΩ
2
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CDCLVP215
www.ti.com.................................................................................................................................................... SCAS853A – APRIL 2008 – REVISED OCTOBER 2008
ABSOLUTE MAXIMUM RATINGS
over operating free-air temperature range (unless otherwise noted)
VALUE
UNIT
–0.3 to 4.6
V
Input voltage
–0.3 to VCC + 0.5
V
VO
Output voltage
–0.3 to VCC + 0.5
V
IIN
Input current
±20
mA
VEE
Negative supply voltage (relative to VCC)
-4.6 to 0.3
V
IBB
Sink/source current
–1 to 1
mA
IO
DC output current
–50
mA
Tstg
Storage temperature range
–65 to 150
°C
VCC
Supply voltage (relative to VEE)
VI
RECOMMENDED OPERATING CONDITIONS
VCC
Supply voltage (relative to VEE)
TA
Operating free-air temperature
MIN
NOM
MAX
2.375
2.5/3.3
3.8
V
85
°C
–40
UNIT
PACKAGE THERMAL IMPEDANCE
TEST CONDITION
θJA
θJC
(1)
Thermal resistance junction to ambient (1)
MAX
UNIT
0 LFM
MIN
49
°C/W
150 LFM
37
°C/W
250 LFM
36
°C/W
500 LFM
32
°C/W
19
°C/W
MAX
UNIT
Thermal resistance junction to case
According to JESD 51-7 standard.
LVECL DC ELECTRICAL CHARACTERISTICS
Vsupply: VCC = 0 V, VEE = –2.375 V to –3.8 V
over operating free-air temperature range (unless otherwise noted)
PARAMETER
IEE
Supply internal current
ICC
Output and internal supply
current
IIN
VBB
Input current
TEST CONDITIONS
–40°C,
25°C,
85°C
Absolute value of current
All outputs terminated 50 Ω to VCC – 2 V
TYP
40
90
–40°C
354
25°C
380
85°C
405
mA
mA
Includes pullup/pulldown resistors
VIH = VCC, VIL = VCC - 2 V
–40°C,
25°C,
85°C
–150
For VEE = –3 to –3.8 V, IBB = –0.2 mA
–40°C,
25°C,
85°C
–1.45
VEE = –2.375 to –2.75 V, IBB = –0.2 mA
–40°C,
25°C,
85°C
–1.4
(1)
-40°C,
25°C,
85°C
0.5
1.3
V
-40°C,
25°C,
85°C
VEE + 1
–0.3
V
Internally generated bias
voltage
VID
Input amplitude (CLKn, CLKn)
Difference of input | VIH – VIL | , See
VCM
Common-mode voltage
(CLKn, CLKn)
DC offset relative to VEE
(1)
MIN
150
–1.3
µA
–1.15
V
–1.25
–1.1
VID minimum and maximum is required to maintain ac specifications, actual device function tolerates a minimum VID of 100 mV.
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3
CDCLVP215
SCAS853A – APRIL 2008 – REVISED OCTOBER 2008.................................................................................................................................................... www.ti.com
LVECL DC ELECTRICAL CHARACTERISTICS (continued)
Vsupply: VCC = 0 V, VEE = –2.375 V to –3.8 V
over operating free-air temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
–40°C
VOH
VOL
VOD
High-level output voltage
IOH = –21 mA
Low-level output voltage
IOL = –5 mA
Differential output voltage swing
Terminated with 50 Ω to VCC – 2 V,
See Figure 3
TYP
MAX
–1.26
–0.85
25°C
–1.2
–0.85
85°C
–1.15
–0.85
–40°C
–1.85
–1.5
25°C
–1.85
–1.45
85°C
–1.85
–1.4
–40°C
25°C,
85°C
600
UNIT
V
V
mV
LVPECL DC ELECTRICAL CHARACTERISTICS
Vsupply: VCC = 2.375 V to 3.8 V, VEE= 0 V
over operating free-air temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
IEE
Supply internal current
Absolute value of current
ICC
Output and internal
supply current
All outputs terminated 50 Ω to VCC – 2 V
IIN
VBB
Input current
380
85°C
405
mA
VCC – 1.45
VCC = 2.375 to 2.75 V, IBB = –0.2 mA
–40°C,
25°C,
85°C
VCC – 1.4
–40°C,
25°C,
85°C
0.5
1.3
V
–40°C,
25°C,
85°C
1
VCC – 0.3
V
–40°C
VCC – 1.26
VCC – 0.85
25°C
VCC – 1.2
VCC – 0.85
VCC – 0.85
Common-mode
voltage (CLKn, CLKn)
DC offset relative to VEE
VOH
High-level output
voltage
IOH = –21 mA
4
354
25°C
–40°C,
25°C,
85°C
VCM
(1)
-40°C
mA
VCC = 3 to 3.8 V, IBB= –0.2 mA
Difference of input | VIH – VIL| , see
Differential output
voltage swing
90
UNIT
–150
Input amplitude (CLKn,
CLKn)
VOD
40
MAX
Includes pullup/pulldown resistors
VIH = VCC, VIL = VCC - 2 V
Internally generated
bias voltage
Low-level output
voltage
TYP
–40°C,
25°C,
85°C
VID
VOL
MIN
–40°C,
25°C,
85C
IOL = –5 mA
Terminated with 50 Ω to VCC – 2 V
(1)
150
VCC – 1.3
VCC – 1.15
V
VCC – 1.25
VCC – 1.1
85°C
VCC – 1.15
–40°C
VCC – 1.85
VCC – 1.5
25°C
VCC - 1.85
VCC – 1.45
85°C
VCC – 1.85
VCC – 1.4
–40°C,
25°C,
85°C
µA
600
V
V
mV
VID minimum and maximum is required to maintain ac specifications, actual device function tolerates a minimum VID of 100 mV.
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CDCLVP215
www.ti.com.................................................................................................................................................... SCAS853A – APRIL 2008 – REVISED OCTOBER 2008
AC ELECTRICAL CHARACTERISTICS
Vsupply: VCC = 2.375 V to 3.8 V, VEE = 0 V or LVECL/LVPECL input VCC = 0 V, VEE = -2.375 V to -3.8 V
over operating free-air temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
tpd
Differential propagation delay CLKn, CLKn
to all QA0, QA0… QB4, QB4
Input condition: VCM = 1 V,
VID = 0.5 V
tsk(o)
Output-to-output skew
See Note A of Figure 1
tsk(pp)
Part-to-part skew
See Note B of Figure 1
taj
Additive phase jitter, rms
Integration bandwidth of
20 kHz to 20 MHz,
fout = 125 MHz at 25°C
f(max)
Maximum frequency
Functional up to 3.5 GHz, timing
specifications apply at 1 GHz,
see Figure 3
tr/tf
Output rise and fall time (20%, 80%)
MIN
TYP
135
15
90
MAX
UNIT
300
ps
30
ps
70
ps
< 0.8
ps
3500
MHz
200
ps
CLKn
CLKn
tPLHn0
tPLHn0
tPLHn1
tPLHn1
Qn0
Qn0
Qn1
Qn1
tPLHn2
Qn2
tPLHn2
Qn2
o
o
o
o
o
tPLHn4
tPLHn4
Qn4
Qn4
A.
Output skew is calculated as the greater of: The difference between the fastest and the slowest tPLHn (n = n0,
n1,...n4) or the difference between the fastest and the slowest tPHLn (n = n0, n1,...n4).
B.
Part-to-part skew, is calculated as the greater of: The difference between the fastest and the slowest tPLHn (n = n0,
n1,...n4) across multiple devices or the difference between the fastest and the slowest tPHLn (n = n0, n1,...n4) across
multiple devices.
C.
Output skew is measured per the output group.
Figure 1. Waveform for Calculating Both Output and Part-to-Part Skew
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CDCLVP215
SCAS853A – APRIL 2008 – REVISED OCTOBER 2008.................................................................................................................................................... www.ti.com
VCC
ZO = 50 W
Yn
CDCLVP215
Driver
LVPECL
Receiver
ZO = 50 W
Yn
50 W
50 W
VEE
VT = VCC - 2 V
Figure 2. Typical Termination for Output Driver (See the Application Note Interfacing Between LVPECL,
LVDS, and CML, Literature Number SCAA056)
VODmin - Differential Output Voltage Swing - mV
DIFFERENTIAL OUTPUT VOLTAGE SWING
vs
FREQUENCY
900
800
VCC = 2.375 V
TA = -40°C to 85°C
700
600
500
400
300
200
100
0
1
1.5
2
2.5
3
3.5
f - Frequency - GHz
Figure 3. LVPECL Input Using CLKB Pair, VCM = 1 V, VID = 0.5 V
6
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PACKAGE OPTION ADDENDUM
www.ti.com
1-Dec-2008
PACKAGING INFORMATION
Orderable Device
Status (1)
Package
Type
Package
Drawing
Pins Package Eco Plan (2)
Qty
CDCLVP215RHBR
ACTIVE
QFN
RHB
32
3000 Green (RoHS &
no Sb/Br)
Cu NiPdAu
Level-2-260C-1 YEAR
CDCLVP215RHBT
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
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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
28-Nov-2008
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
CDCLVP215RHBR
QFN
RHB
32
3000
330.0
12.4
5.3
5.3
1.5
8.0
12.0
Q2
CDCLVP215RHBT
QFN
RHB
32
250
330.0
12.4
5.3
5.3
1.5
8.0
12.0
Q2
Pack Materials-Page 1
PACKAGE MATERIALS INFORMATION
www.ti.com
28-Nov-2008
*All dimensions are nominal
Device
Package Type
Package Drawing
Pins
SPQ
Length (mm)
Width (mm)
Height (mm)
CDCLVP215RHBR
QFN
RHB
32
3000
340.5
333.0
20.6
CDCLVP215RHBT
QFN
RHB
32
250
340.5
333.0
20.6
Pack Materials-Page 2
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