HMC724LC3
v03.0514
14 Gbps FAsT RIsE TIME
1:2 FANOUT bUFFER
Typical Applications
The HMc724Lc3 is ideal for:
Features
inputs Terminated internally to 50 ohms
differential inputs are dc coupled
propagation delay: 110 ps
Fast Rise and Fall Times: 19 / 18 ps
power dissipation: 300 mW
16 Lead ceramic 3x3 mm SMT package: 9 mm
2
HigH Speed Logic - SMT
• 16 G Fiber Channel
• RF ATE Applications
• Broadband Test & Measurement
• Serial Data Transmission up to 14 Gbps
• Clock Buffering up to 14 GHz
Functional Diagram
General Description
The HMc724Lc3 is a 1:2 Fanout Buffer designed to
support data transmission rates up to 14 gbps, and
clock frequencies as high as 14 gHz. All differential
inputs and outputs are dc coupled and terminated on
chip with 50 ohm resistors to ground. The outputs may
be used in either single ended or differential modes,
and should be Ac or dc coupled into 50 ohm resistors
connected to ground.
All differential inputs to the HMc724Lc3 are cML and
terminated on-chip with 50 ohms to the positive supply,
gNd, and may be dc or Ac coupled. The differential
cMl outputs are source terminated to to 50 ohms
and may also be Ac or dc coupled. outputs can be
connected directly to a 50 ohm ground-terminated
system or drive devices with cML logic input. The
HMc724Lc3 operates from a single -3.3 V supply and
is available in RoHS-compliant 3x3 mm SMT package.
Electrical specifications,
T
A
= +25 ºC,
Vee = -3.3 V
parameter
power Supply Voltage
power Supply current
Maximum data Rate
Maximum clock Rate
input Voltage Range
input differential Range
input Return Loss
output Amplitude
output High Voltage
output Low Voltage
output Rise / Fall Time
Single-ended, 20% - 80%
Frequency <14 gHz
Single-ended, peak-to-peak
differential, peak-to-peak
-1.5
0.1
10
550
1100
-10
-560
19 / 18
conditions
Min.
-3.6
Typ.
-3.3
90
14
14
0.5
2.0
Max
-3.0
Units
V
mA
gbps
gHz
V
Vp-p
dB
mVp-p
mVp-p
mV
mV
ps
1
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
Phone: 978-250-3343
Fax: 978-250-3373
Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
HMC724LC3
v03.0514
14 Gbps FAsT RIsE TIME
1:2 FANOUT bUFFER
Electrical specifications
(continued)
parameter
output Return Loss
Small Signal gain
Random Jitter J
R
deterministic Jitter, J
d
propagation delay, td
d1 to d2 data Skew, t
SKeW
[1] deterministic jitter measured at 13 gHz with a 300 mVp-p, 2 -1 pRBS input sequence.
15
conditions
Frequency <14 gHz
Min.
Typ.
10
27
Max
Units
dB
ps rms
6
ps
ps
ps
rms
δ
-
δ,
2
15
-1 pRBS input
[1]
0.2
2
110
<2
DC Current vs. supply Voltage
110
105
100
DC CURRENT (mA)
95
90
85
80
75
70
-3.7
-3.6
-3.5
-3.4
-3.3
-3.2
[1]
Output Differential Voltage
vs. supply Voltage
[2]
1500
VOUT DIFFERENTIAL (mVp-p)
1400
1300
1200
1100
1000
900
-3.7
-3.1
-3
-2.9
-3.6
-3.5
-3.4
-3.3
-3.2
-3.1
-3
-2.9
SUPPLY VOLTAGE (V)
+25C
+85C
-40C
SUPPLY VOLTAGE (V)
+25C
+85C
-40C
Output Differential Voltage vs. Frequency
[3]
1300
VOUT DIFFERENTIAL (mVp-p)
1200
1100
1000
900
800
700
600
2
Rise / Fall Time vs. supply
[1]
25
23
RISE/FALL TIME (ps)
21
19
17
4
6
8
10
12
14
16
15
-3.7
-3.6
-3.5
-3.4
-3.3
-3.2
-3.1
-3
-2.9
FREQUENCY (GHz)
SUPPLY VOLTAGE (V)
tr
tf
[1] data rate = 13 gbps
[2] Frequency = 10 gHz
[3] Vee = 3.3 V
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
Phone: 978-250-3343
Fax: 978-250-3373
Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
HigH Speed Logic - SMT
2
dB
HMC724LC3
v03.0514
14 Gbps FAsT RIsE TIME
1:2 FANOUT bUFFER
Output Return Loss vs. Frequency
0
Input Return Loss vs. Frequency
0
-10
RETURN LOSS (dB)
HigH Speed Logic - SMT
-5
-10
RETURN LOSS (dB)
-15
-20
-25
-30
-35
-40
0
2
4
6
8
10
12
14
-50
0
2
4
6
8
10
12
14
FREQUENCY (GHz)
-20
-30
-40
FREQUENCY (GHz)
3
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
Phone: 978-250-3343
Fax: 978-250-3373
Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
HMC724LC3
v03.0514
14 Gbps FAsT RIsE TIME
1:2 FANOUT bUFFER
Eye Diagram
[1] Test conditions:
pattern generated with an Agilent N4903A Serial BeRT.
eye diagram presented on a Tektronix cSA 8000.
device input = 10 gbps pN code, Vin = 300 mVp-p differential.
Both output channels shown.
Timing Diagram
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
Phone: 978-250-3343
Fax: 978-250-3373
Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
HigH Speed Logic - SMT
4
HMC724LC3
v03.0514
14 Gbps FAsT RIsE TIME
1:2 FANOUT bUFFER
Absolute Maximum Ratings
power Supply Voltage (Vee)
-3.75 V to +0.5 V
-2 V to +0.5 V
-1.5 V to +1 V
0.68 W
59 °c/W
125 °c
-65 °c to +150 °c
-40 °c to +85 °c
class 1c
HigH Speed Logic - SMT
input Signals
output Signals
continuous pdiss (T = 85 °c)
(derate 17 mW/°c above 85 °c)
Thermal Resistance (R
th j-p
) Worst
case junction to package paddle
Maximum Junction Temperature
Storage Temperature
operating Temperature
eSd Sensitivity (HBM)
eLecTRoSTATic SeNSiTiVe deVice
oBSeRVe HANdLiNg pRecAUTioNS
Outline Drawing
NoTeS:
1. pAcKAge BodY MATeRiAL: ALUMiNA
2. LeAd ANd gRoUNd pAddLe pLATiNg:
30-80 MicRoiNcHeS goLd oVeR 50 MicRoiNcHeS MiNiMUM NicKeL.
3. diMeNSioNS ARe iN iNcHeS [MiLLiMeTeRS].
4. LeAd SpAciNg ToLeRANce iS NoN-cUMULATiVe.
5. pAcKAge WARp SHALL NoT eXceed 0.05 mm dATUM -c-
6. ALL gRoUNd LeAdS MUST Be SoLdeRed To pcB RF gRoUNd.
7. pAddLe MUST Be SoLdeRed To gNd.
package Information
part Number
HMc724Lc3
package Body Material
Alumina, White
Lead Finish
gold over Nickel
MSL Rating
MSL3
[1]
package Marking
[2]
H724
XXXX
[1] Max peak reflow temperature of 260 °c
[2] 4-digit lot number XXXX
5
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
Phone: 978-250-3343
Fax: 978-250-3373
Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com