HMC848LC5
v01.1010
45 Gbps, 1:4 DEMUX WITH
PROGRAMMABLE OUTPUT VOLTAGE
Features
Supports Data Rates up to 45 Gbps
Half Rate Clock Input
Quarter Rate Reference Clock Output
Fast Rise and Fall Times: 25 / 21 ps
Programmable Differential Output
Voltage Swing: 300 - 1000 mVp-p
Single Supply: +3.3V
32 Lead Ceramic 5x5 mm SMT Package: 25 mm
2
Typical Applications
The HMC848LC5 is ideal for:
• SONET OC-768
3
MUX & DEMUX - SMT
• RF ATE Applications
• Broadband Test & Measurements
• Serial Data Transmission up to 45 Gbps
• High Speed ADC Interfacing
Functional Diagram
General Description
The HMC848LC5 is a 1:4 demultiplexer designed for
data deserialization up to 45 Gbps. The device uses
both rising and falling edges of the half-rate clock to
sample the input data in sequence, D0-D3 and latches
the data onto the differential outputs. A quarter-rate
clock output generated on-chip can be used to clock
the data into other devices.
All clock and data inputs / outputs of the HMC848LC5
are CML and terminated on-chip with 50 Ohms to the
VCC, and may be DC or AC coupled. The inputs and
outputs of the HMC848LC5 may be operated either
differentially or single-ended. The HMC848LC5 also
features an output level control pin, VCTRL, which allows
for loss compensation or signal level optimization. The
HMC848LC5 operates from a single +3.3V supply and
is available in ROHS compliant 5x5 mm SMT package.
Electrical Specifications,
T
A
= +25°C,
Vcc
= 3.3V
Parameter
Power Supply Voltage
Power Supply Current
Output Amplitude Control Voltage Range (Vctrl)
Maximum Data Rate
Maximum Clock Rate
Input Amplitude (Data)
Half Rate Clock
Single-Ended, peak-to-peak
[1]
Differential, peak-to-peak
Single-Ended, peak-to-peak
[1]
Differential, peak-to-peak
Conditions
± 5% Tolerance
Vctrl = 2.5V
Min.
3.13
480
1.7
45
22.5
150
150
100
100
800
1000
700
1000
Typ.
3.3
540
2.5
Max
3.47
600
3
Units
V
mA
V
Gbps
GHz
mVp-p
mVp-p
mVp-p
mVp-p
Input Amplitude (Clock)
[1] The un-used port is biased @ 3.3V
3-1
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, 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
HMC848LC5
v01.1010
45 Gbps, 1:4 DEMUX WITH
PROGRAMMABLE OUTPUT VOLTAGE
Electrical Specifications,
(continued)
Parameter
Input High Voltage (Data & Clock)
Input Low Voltage (Data & Clock)
Data Output Voltage Swing Range
Clock Output Voltage Swing
Output High Voltage
Output Low Voltage
Input Return Loss
Conditions
Vctrl = 2.5V
Vctrl = 2.5V
Differential, peak-to-peak
@ 40 Gbps
Differential, peak-to-peak
@ 10 GHz
Vctrl = 2.5V
Vctrl = 2.5V
Data input up to 11.25 GHz
Clock input up to 22.5 GHz
Data output up to 22.5 GHz
Clock output up to 11.25 GHz
Min.
2.8
2.3
300
600
700
2.95
2.6
10
9
8
8
4
0.35
20% - 80%
20% - 80%
Input clock to output data
Input clock to output clock
Both at rising and falling edges
Both at rising and falling edges
25
21
380
80
20
2
Typ.
Max
3.8
3.3
1000
800
Units
V
V
mVp-p
mVp-p
V
V
dB
dB
dB
dB
ps p-p
ps rms
ps
ps
ps
ps
ps
ps
3
MUX & DEMUX - SMT
3-2
Output Return Loss
Deterministic Jitter, Jd
[2]
Additive Random Jitter, Jr
[3]
Rise Time, tr
[2]
Fall Time, tf
[2]
Propagation Delay Clock to Data, Tdpd
Propagation Delay Clock to Output Clock, Tcpd
Set Up Time, ts
Hold Time, th
[2] CKINP: 20 GHz clock signal, 250 mVp-p single-ended, INP: 40 Gbps PRBS 2
23
-1 pattern, 250 mVp-p single-ended
[3] Random jitter is measured with 40 Gbps 10101… pattern
DC Current vs. Supply Voltage
[1] [2]
700
+25C
+85C
-40C
Differential Output Swing
vs. Supply Voltage
[1][2]
1000
DIFFERENTIAL VOLTAGE (mVp-p)
+25C
+85C
-40C
900
DC CURRENT (mA)
600
800
700
500
600
400
3.13
3.19
3.24
3.3
3.36
3.41
3.47
500
3.13
3.19
3.24
3.3
3.36
3.41
3.47
SUPPLY VOLTAGE Vcc (V)
SUPPLY VOLTAGE Vcc (V)
[1] Vctrl = 2.5V
[2] Data Rate = 40 Gbps
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, 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
HMC848LC5
v01.1010
45 Gbps, 1:4 DEMUX WITH
PROGRAMMABLE OUTPUT VOLTAGE
DC Current vs. Vctrl
[1]
700
Differential Output Swing vs. Vctrl
1000
DIFFERENTIAL VOLTAGE (mVp-p)
[1]
DC CURRENT (mA)
3
MUX & DEMUX - SMT
600
800
600
500
400
+25C
+85C
-40C
400
+25C
+85C
-40C
200
300
1.8
2
2.2
2.4
2.6
2.8
3
0
1.8
2
2.2
2.4
2.6
2.8
3
CONTROL VOLTAGE Vctrl (V)
CONTROL VOLTAGE Vctrl (V)
Rise Time vs. Supply Voltage
[1][2][3][4]
35
Fall Time vs. Supply Voltage
[1][2][3][4]
35
+25C
+85C
-40C
30
FALL TIME (ps)
+25C
+85C
-40C
30
RISE TIME (ps)
25
25
20
20
15
15
10
3.13
3.19
3.24
3.3
3.36
3.41
3.47
10
3.13
3.19
3.24
3.3
3.36
3.41
3.47
SUPPLY VOLTAGE Vcc (V)
SUPPLY VOLTAGE Vcc (V)
Rise Time vs. Vctrl
[1][3][4]
35
Peak-to-Peak Jitter vs. Supply Voltage
[1][2][3][5]
10
RISE / FALL TIME (ps)
30
P-P JITTER (PS)
8
25
6
20
4
+25C
+85C
-40C
15
Rise Time
Fall Time
2
10
1.8
2
2.2
2.4
2.6
2.8
3
0
3.13
3.19
3.24
3.3
3.36
3.41
3.47
CONTROL VOLTAGE Vctrl (V)
SUPPLY VOLTAGE Vcc (V)
[1] Data Rate = 40 Gbps
[2] Vctrl = 2.5V
[5] Source jitter was not deembeded
[3] Data was taken at single-ended output
[4] 20% - 80%
3-3
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, 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
HMC848LC5
v01.1010
45 Gbps, 1:4 DEMUX WITH
PROGRAMMABLE OUTPUT VOLTAGE
Data Input Return Loss vs. Frequency
[1][2]
0
-5
RETURN LOSS (dB)
-10
-15
-20
-25
-30
RETURN LOSS (dB)
Data Output Return Loss vs. Frequency
[1][2]
0
-5
-10
-15
-20
-25
-30
3
0
5
10
15
20
25
0
5
10
15
20
25
FREQUENCY (GHz)
FREQUENCY (GHz)
Clock Input Return Loss vs. Frequency
[1][2]
0
-5
RETURN LOSS (dB)
-10
-15
-20
-25
-30
Clock Output Return Loss vs. Frequency
[1][2]
0
-5
RETURN LOSS (dB)
-10
-15
-20
-25
-30
0
5
10
15
20
25
0
5
10
15
20
25
FREQUENCY (GHz)
FREQUENCY (GHz)
10 Gbps Single-Ended Output Eye Diagram
Measurements
Current
Eye Amp
Rise Time
Fall Time
p-p jitter
356 mV
25.8 ps
21.3 ps
5.33 ps
Minimum
356 mV
25.8 ps
21.3 ps
4.44ps
Maximum
356 mV
26.7 ps
21.3 ps
5.33 ps
Total Meas.
84
84
84
84
Time Scale: 40 ps/div
Amplitude Scale: 79.7 mV/div
Test Conditions:
VCC = +3.3V, VCTRL = 2.5V
INP: 40 Gbps NRZ PRBS 2
23
-1 pattern, 250 mVp-p single-
ended
[1] Vctrl = 2.5V
[2] Device measured on evaluation board with single ended time domain gating
CKINP: 20 GHz Clock Signal, 250 mVp-p single-ended
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, 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
3-4
MUX & DEMUX - SMT
HMC848LC5
v01.1010
45 Gbps, 1:4 DEMUX WITH
PROGRAMMABLE OUTPUT VOLTAGE
Timing Diagram
3
MUX & DEMUX - SMT
Absolute Maximum Ratings
Power Supply Voltage (Vcc)
Input Voltages
DC Control Pins (Vctrl, Vdcc)
Channel Temperature
Continuous Pdiss (T = 85 °C)
(derate 49.97 mW/°C above 85 °C )
Thermal Resistance
(Channel to die bottom)
Storage Temperature
Operating Temperature
3.7V to +0.5V
Vcc -2V to Vcc +0.5V
Vcc +0.2V to Vcc -2.5V
125 °C
2W
20.01 °C/W
-65°C to +150°C
-40°C to +85°C
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
3-5
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, 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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