HMC856LC5
v01.0611
28 Gbps 5-BIT DIGITAL TIME DELAY
WITH PROGRAMMABLE OUTPUT VOLTAGE
Features
Differential & Single-Ended Operation
Supports Data Rates up to 28 Gbps
Fast Rise and Fall Times: 20 / 18 ps
Low Power Consumption: 610 mW typ.
Programmable Differential
Output Voltage Swing: 500 - 1350 mVp-p
Single Supply: -3.3V
32 Lead Ceramic 5x5 mm SMT Package: 25 mm
2
Typical Applications
The HMC856LC5 is ideal for:
• SONET OC-192
3
BROADBAND TIME DELAY - SMT
• High Speed Serial Logic
• Clock & Data Recovery
• Broadband Test & Measurement Equipment
• Frequency Synthesis
• Matched Timing
Functional Diagram
General Description
The HMC856LC5 is a wideband time delay with a
5-bit digital control designed for timing compensation
or clock skew management applications. The time
delay provides nearly 100 ps of delay range with 3 ps
resolution and supports 28 Gbps data. The monotonic
delay is compensated for stable operation over both
power supply and temperature variation.
All differential inputs to the HMC856LC5 are CML and
terminated on-chip with 50 Ohms to the positive supply,
GND, and may be AC or DC coupled. The differential
CML outputs are source terminated 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 control lines B4:B0
ae differential CML inputs terminated with 600 Ohms
to the positive rail, which supports lower power control
options. The HMC856LC5 features an output level
control pin, VR, which allows for loss compenstion or
signal level optimization. The HMC856LC5 operates
from a single -3.3 V supply and is available in ROHS-
compliant 5x5 mm SMT package.
Electrical Specifications,
T
A
= +25 °C,
Vee = -3.3 V, VR = 0 V
Parameter
Power Supply Voltage
Power Supply Current
Maximum Data Rate
Input Voltage Range, CML
Input Differential Voltage
Output Rise / Fall Time
Random Jitter Jr
Deterministic Jitter, Jd
Input Return Loss
Differential, 20% - 80%
rms
peak-to-peak, 2
15
-1 PRBS input
[1]
Frequency <12 GHz
-1.5
0.1
20 / 18
0.2
<2
10
Conditions
Min.
-3.7
Typ.
-3.3
185
28
0.5
2.0
Max
-2.9
Units
V
mA
Gbps
V
V
ps
ps rms
ps, p-p
dB
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
HMC856LC5
v01.0611
28 Gbps 5-BIT DIGITAL TIME DELAY
WITH PROGRAMMABLE OUTPUT VOLTAGE
Electrical Specifications
(continued)
Parameter
Output Amplitude
Output High Voltage
Output Low Voltage
Output Return Loss
VR Pin Current
VR Pin Current
Propagation Delay Data to Data, Tprop
Delay Control Range
Delay Temperature Variation
Delay Temperature Variation
Delay Resolution
Ta = 85 °C
Ta = -40 °C
9
4
3
Frequency <12 GHz
VR = 0.0 V
VR = 0.4 V
255
92
12
8
Conditions
Single-Ended, peak-to-peak
Differential, peak-to-peak
Min.
Typ.
565
1130
-20
-585
10
3.0
4.25
Max
Units
mVp-p
mVp-p
mV
mV
dB
mA
mA
ps
ps
ps
ps
ps
3
BROADBAND TIME DELAY - SMT
3-2
DC Current vs. Supply Voltage
[1][2]
280
260
DC CURRENT (mA)
240
220
200
180
160
140
120
-3.7
+25C
+85C
-40C
Output Differential Voltage
vs. Supply Voltage
[1][2]
1500
DIFFERENTIAL VOLTAGE (mV)
1400
1300
1200
1100
1000
900
800
700
+25C
+85C
-40C
-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)
SUPPLY VOLTAGE (V)
DC Current vs. VR
[2][3]
280
260
240
DC CURRENT (mA)
220
200
180
160
140
120
100
80
-1.2
-1
-0.8
-0.6
-0.4
VR (V)
-0.2
0
0.2
0.4
+25C
+85C
-40C
Output Differential Voltage vs. VR
[2][3]
1500
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
+25C
+85C
-40C
VR (V)
[1] VR = 0.0 V
[2] Frequency = 28 Gbps
[3] Vee = -3.3 V
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
HMC856LC5
v01.0611
28 Gbps 5-BIT DIGITAL TIME DELAY
WITH PROGRAMMABLE OUTPUT VOLTAGE
Rise / Fall Time vs. VR
[2][4]
26
Rise / Fall Time vs. Supply Voltage
[1][2]
24
tr
tf
RISE/FALL TIME (ps)
20
RISE/FALL TIME (ps)
3
BROADBAND TIME DELAY - SMT
22
24
tr
tf
22
18
20
16
18
14
-3.7
-3.6
-3.5
-3.4
-3.3
-3.2
-3.1
-3
-2.9
16
-1.2
-1
-0.8
-0.6
-0.4
VR (V)
-0.2
0
0.2
0.4
SUPPLY VOLTAGE (V)
Input Return Loss vs. Frequency
[1][3][4]
10
5
RETURN LOSS (dB)
Output Return Loss vs. Frequency
[1][3][4]
5
0
RETURN LOSS (dB)
-5
-10
-15
-20
-25
-30
-35
0
-5
-10
-15
-20
-25
-30
0
5
10
15
20
25
FERQUENCY (GHz)
0
5
10
15
20
25
FREQUENCY (GHz)
Delay vs. Supply Voltage
[1][2]
100
98
96
94
DELAY (ps)
92
90
88
86
84
82
80
-3.7
-3.6
-3.5
-3.4
-3.3
-3.2
-3.1
-3
-2.9
+25C
+85C
-40C
Delay vs. VR
[2][4]
100
98
96
94
DELAY (ps)
92
90
88
86
84
82
80
-1.2
-1
-0.8
-0.6
-0.4
VR (V)
-0.2
0
0.2
0.4
+25C
+85C
-40C
SUPPLY VOLTAGE (V)
[1] VR = 0.0 V
[2] Frequency = 28 Gbps
[3] Device measured on evaluation board with port extensions
[4] Vee = -3.3 V
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
HMC856LC5
v01.0611
28 Gbps 5-BIT DIGITAL TIME DELAY
WITH PROGRAMMABLE OUTPUT VOLTAGE
Delay vs. Setting Over Temperature
[1][3][4]
100
90
80
DELAY (ps)
Normalized Delay vs. Setting
[1][3][4][5]
100
90
80
70
DELAY (ps)
60
50
40
30
20
10
0
0
4
8
12
16
20
24
28
32
SETTING (bits)
+25C
+85C
-40C
70
60
50
40
30
20
10
0
-40
-15
10
31
16
8
4
2
1
3
60
85
35
TEMPERATURE (C)
Absolute Delay vs. Setting
[1][2][4][5]
360
350
340
330
DELAY (ps)
320
310
300
290
280
270
260
250
0
4
8
12
16
20
24
28
32
SETTING (bits)
+25C
+85C
-40C
Amplitude vs. Input Power
[1][3][4]
40
35
30
AMPLITUDE (dB)
25
20
15
10
5
0
-5
-10
0
5
10
FREQUENCY (GHz)
15
20
-30 dBm
-25 dBm
-20 dBm
-10 dBm
0 dBm
Eye Diagram @ 28 Gbps
Test Conditions:
Differential 400 mV data input generated with a 2
15
-
1 PN 28 Gbps PRBS pattern, resulting in a 28 Gbps
output measured using a Tektronix CSA 8000
[1] VR = 0 V [2] Frequency = 28 Gbps [3] Device measured on evaluation board with port extensions [4] Vee = -3.3 V
[5] Normalized to 0 setting at its respective temperature
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
BROADBAND TIME DELAY - SMT
HMC856LC5
v01.0611
28 Gbps 5-BIT DIGITAL TIME DELAY
WITH PROGRAMMABLE OUTPUT VOLTAGE
Timing Diagram
3
BROADBAND TIME DELAY - SMT
Absolute Maximum Ratings
Power Supply Voltage (Vee)
Input Signals
Output Signals
Maximum Junction Temperature
Continuous Pdiss (T = 85 °C)
(derate 33 mW/°C above 85 °C)
Thermal Resistance (Rth j-p)
Worst-case device to package paddle
Storage Temperature
Operating Temperature
ESD Sensitivity (HBM)
-3.75 V to +0.5 V
-2 V to +0.5 V
-1.5 V to 0.5 V
125 °C
1.33 W
30 °C/W
-65 °C to +150 °C
-40 °C to +85 °C
Class 1C
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 Vee.
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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