HMC940LC4B
v02.0614
13 Gbps, 1:4 FANOUT BUFFER
w/ PROGRAMMABLE OUTPUT VOLTAGE
Typical Applications
the HMc940lc4B is ideal for:
Features
inputs terminated internally in 50 ohms
differential inputs are dc coupled
propagation delay: 101 ps
Fast Rise and Fall times: 26 / 25 ps
programmable differential
output Voltage Swing: 600 - 1400 mV
power dissipation: 440 mW
24 lead ceramic 4x4 mm SMt package: 16 mm
2
HigH Speed digital logic - SMt
• RF ATE Applications
• Broadband Test & Measurement
• Serial Data Transmission up to 13 Gbps
• Clock Buffering up to 13 GHz
Functional Diagram
General Description
the HMc940lc4B is a 1:4 Fanout Buffer designed to
support data transmission rates up to 13 gbps, and
clock frequencies as high as 13 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.
the HMc940lc4B also features an output level control
pin, VR which allows for loss compensation or for signal
level optimization. the HMc940lc4B operates from a
single -3.3V dc supply and is available in a ceramic
RoHS compliant 4x4 mm SMt package.
Electrical Specifications,
T
A
= +25 ºC Vee = -3.3V, VR = 0V
parameter
power Supply Voltage (Vee)
power Supply current
Maximum data Rate
Maximum clock Rate
input High Voltage
input low Voltage
input Return loss
output amplitude
output High Voltage
output low Voltage
output Rise / Fall time
Single-ended, 20% - 80%
Frequency <15 gHz
Single-ended, peak-to-peak
differential, peak-to-peak
-0.5
-1.0
10
585
1170
-15
-600
26 / 25
conditions
Min.
-3.6
typ.
-3.3
133
13
13
0.5
0.0
Max
-3.0
Units
V
ma
gbps
gHz
V
V
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
HMC940LC4B
v02.0614
13 Gbps, 1:4 FANOUT BUFFER
w/ PROGRAMMABLE OUTPUT VOLTAGE
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 gbps with a 300 mVp-p, 2 -1 pRBS input sequence.
15
conditions
Frequency <13 gHz
Min.
typ.
10
20
Max
Units
dB
0.2
ps rms
ps
ps
ps
rms
δ
-
δ,
2
15
-1 pRBS input
[1]
4
101
±3
6
DC Current vs. Supply Voltage
[1] [2]
170
160
DC CURRENT (mA)
150
140
130
120
110
100
90
-3.7
Output Differential vs. Supply Voltage
[1] [2]
1500
DIFFERENTIAL VOLTAGE (mV)
1400
1300
1200
1100
1000
900
800
700
600
500
-3.6
-3.5
-3.4
-3.3
-3.2
-3.1
-3
-2.9
-3.7
-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 vs. VR
[2][3]
1500
DC Current vs. VR
[2][3]
170
160
150
DC CURRENT (mA)
140
130
120
110
100
90
80
DIFFERENTIAL VOLTAGE (mV)
1400
1300
1200
1100
1000
900
800
700
600
500
-1.2
-1
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
70
-1.2
-1
-0.8
-0.6
-0.4
VR (V)
-0.2
0
0.2
0.4
VR (V)
+25C
+85C
-40C
+25C
+85C
-40C
[1] VR = 0.0V
[2] Frequency = 13 gHz
[3] Vee = -3.3V
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 digital logic - SMt
2
dB
HMC940LC4B
v02.0614
13 Gbps, 1:4 FANOUT BUFFER
w/ PROGRAMMABLE OUTPUT VOLTAGE
Rise / Fall Time vs. Supply Voltage
[1][2]
30
Rise / Fall Time vs. VR
[2][5]
30
28
RISE/FALL TIME (ps)
HigH Speed digital logic - SMt
28
RISE/FALL TIME (ps)
26
26
24
24
22
22
20
-3.7
-3.6
-3.5
-3.4
-3.3
-3.2
-3.1
-3
-2.9
20
-1.2
-1
-0.8
-0.6
-0.4
VR (V)
-0.2
0
0.2
0.4
SUPPLY VOLTAGE (V)
tr
tf
tr
tf
Input Return Loss vs. Frequency
[1][3][5]
5
0
RETURN LOSS (dB)
Output Return Loss vs. Frequency
[1][3][5]
5
0
RETURN LOSS (dB)
-5
-10
-15
-20
-25
-30
-35
-40
-5
-10
-15
-20
-25
-30
-35
-40
0
3
6
9
12
15
FREQUENCY (GHz)
0
3
6
9
12
15
FREQUENCY (GHz)
Amplitude vs. Input Power
[1][4][5]
25
20
AMPLITUDE (dB)
15
10
5
0
-5
-10
0
3
6
9
12
15
FREQUENCY (GHz)
-20 dBm
-15 dBm
-10 dBm
-5 dBm
0 dBm
Truth Table
input
iN
l
H
Notes:
iN = iNp - iNN
ox = oxp - oxN
outputs
ox
l
H
H - positive differential voltage
l - Negative differential voltage
[1] VR = 0.0V
[2] Frequency = 13 gHz
[3] device measured on evaluation board with gating after connector
[4] device measured on evaluation board with port extensions
[5] Vee = -3.3V
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
HMC940LC4B
v02.0614
13 Gbps, 1:4 FANOUT BUFFER
w/ PROGRAMMABLE OUTPUT VOLTAGE
Eye Diagram
Eye Diagram
[2] 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 digital logic - SMt
4
[1] test conditions:
pattern generated with an agilent N4903a Serial BeRt.
eye diagram presented on a tektronix cSa 8000.
device input = 13 gbps pN code, Vin = 300 mVp-p differential.
Both output channels shown.
HMC940LC4B
v02.0614
13 Gbps, 1:4 FANOUT BUFFER
w/ PROGRAMMABLE OUTPUT VOLTAGE
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
125 °c
1.22 W
HigH Speed digital logic - SMt
input Signals
output Signals
Junction temperature
continuous pdiss (t=85 °c)
(derate 30 mW/°c above 85 °c
thermal Resistance (R
th j-p
)
Worse case junction to package
paddle
Storage temperature
operating temperature
eSd Sensitivity (HBM)
electRoStatic SeNSitiVe deVice
oBSeRVe HaNdliNg pRecaUtioNS
32.8 °c/W
-65 °c to +150 °c
-40 °c to +85 °c
class 1c
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 0.05mm datUM -c-
6. all gRoUNd leadS MUSt Be SoldeRed to pcB RF gRoUNd.
7. eXpoSed paddle MUSt Be SoldeRed to Vee
Package Information
part Number
HMc940lc4B
package Body Material
alumina, White
lead Finish
gold over Nickel
MSl Rating
MSl3
[1]
package Marking
[2]
H940
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
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