HITTITE HMC676LP3E_1109

HMC676LP3E
v01.0811
comparators - SMT
1
10 GHz LATCHED COMPARATOR
WITH RSECL OUTPUT STAGE
Typical Applications
Features
The HMC676LP3E is ideal for:
Equivalent Input Bandwidth: 10 GHz
• ATE Applications
Propagation Delay: 100 ps
• High Speed Instrumentation
Overdrive & Slew Rate Dispersion: 10 ps
• Digital Receiver Systems
Minimum Pulse Width: 60 ps
• Pulse Spectroscopy
Resistor Programmable Hysteresis
• High Speed Trigger Circuits
Differential Latch Control
• Clock & Data Restoration
Power Dissipation: 120 mW
RSCML and RSPECL Versions Available
16 Lead 3 x 3 mm SMT Package: 9 mm 2
Functional Diagram
General Description
The HMC676LP3E is a SiGe monolithic, ultra fast
comparator which features reduced swing (RS) ECL
output drivers and latch inputs. The comparator
supports 10 Gbps operation while providing 100 ps
propagation delay and 60 ps minimum pulse width with
0.2 ps rms random jitter (RJ). Overdrive and slew rate
dispersion are typically 10 ps, making the device ideal
for a wide range of applications from ATE to broadband
communications. The reduced swing ECL output stage
is designed to directly drive 400 mV into 50 Ohms
terminated to -2V. The HMC676LP3E features high
speed latch and programmable hysteresis and may
be configured to operate in either latch mode, or as a
tracking comparator.
Electrical Specifications, TA = +25 °C, Vcci= +3.3 V, Vcco = 0 V, Vee = -3 V, VTERM = -2 V
Parameter
Conditions
Input Voltage Range
Input Differential Voltage
Typ.
Max
Units
-2
2
V
-1.75
1.75
V
Input Offset Voltage
±5
mV
Input Offset Voltage, Temperature Coefficient
15
µV / °C
Input Bias Current
15
uA
Input Bias Current Temperature Coefficient
50
nA / °C
Input Offset Current
4
µA
Input Impedance
50
Ω
Common Mode Input Impedance
350
KΩ
Differential Input Impedance
15
KΩ
Active Gain
45
dB
Common Mode Rejection Ratio
80
dB
±1
mV
Hysteresis
1-1
Min.
Rhys = ∞
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 [email protected]
HMC676LP3E
v01.0811
10 GHz LATCHED COMPARATOR
WITH RSECL OUTPUT STAGE
Parameter
Conditions
Latch Enable Input Impedance
Min.
Typ.
Each Pin
8
Max
Units
KΩ
Latch to Output Delay, tPLOL , tPLOH
VOD = 200 mV
85
ps
Latch Minimum Pulse Width, tPL
VOD = 200 mV
20
ps
Latch Enable Input Range
VOD = 200 mV
Latch Setup Time, tS
VOD = 200 mV
1.6
Latch Hold Time, tH
2.4
V
45
ps
-42
ps
DC Output Characteristics, with 50 Ω to Vcco - 2 V
Min.
Typ.
Max
Units
Output Voltage High Level, Voh
Parameter
Conditions
-0.89
-0.89
-0.95
V
Output Voltage Low Level, Vol
-1.21
-1.25
-1.35
V
Output Voltage Differential Swing
320
350
400
mV
Conditions
Min.
Typ.
Max
Units
VOD = 500 mV
70
100
130
AC Performance
Parameter
Propagation Delay - tPD, tPDL , tPDH
Propagation Delay, Temperature Coefficient
Propagation Delay Skew
(Rising to Falling Transition)
VOD Dispersion
tPD vs. Common Mode Dispersion,
-1.75 V <Vcm <1.75 V
ps / °C
VOD = 500 mV
10
ps
50 mV < VOD < 1V
10
ps
VOD = 500 mV
3
ps
Noise (RTI)
5.9
Deterministic Jitter (pp)
ps
0.45
Equivalent Input Bandwidth [1]
9
10
nV/√(Hz) RTI
16
GHz
Deterministic Jitter at 10 Gbps
with ±100 mV Overdrive
2
ps
Random Jitter at 10 Gbps
with ±100 mV Overdrive
0.2
ps rms
60
ps
Random Jitter (rms)
Input Signal Minimum Pulse Width
comparators - SMT
1
Latch Enable Characteristics
Q / QB Rise Time
From 20% to 80%
23
ps
Q / QB Fall Time
From 20% to 80%
13
ps
Power Supply Requirements
Parameter
Conditions
Min.
Typ.
Max
Units
Input Supply Current, Icci
8
Output Supply Current, Icco
45
mA
mA
Vee Current, lee
16
mA
Power Dissipation, Pd
120
mW
PSRR, Vcci
38
dB
PSRR, Vee
38
dB
Note 1: Equivalent Input Bandwidth is calculated with the following formula: Bweq=0.22/√ (TRCOMP2 -TRIN 2) where TRIN is the 20%/80%
transition time of a quasi-Gaussian signal applied to the comparator input, and TRCOMP is the effective transition time digitized by the
comparator.
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 [email protected]
1-2
HMC676LP3E
v01.0811
Propagation Delay vs. Common Mode
Dispersion vs. Overdrive Voltage
11
15
12.5
9
10
Rising Edge
Falling Edge
7
ΔtPD
DISPERSION (ps)
comparators - SMT
1
10 GHz LATCHED COMPARATOR
WITH RSECL OUTPUT STAGE
5
Rising Edge
Falling Edge
7.5
5
2.5
3
0
1
-2.5
-1
-5
0
10
20
30
40
50
60
70
80
90
100
-2
OVERDRIVE VOLTAGE (mV)
-0.5
0
0.5
1
1.5
2
Comparator Hysteresis
vs. Rhys Control Resistor
-0.6
15
HYSTERESIS (mV)
-0.8
VOLTAGE (Volts)
-1
COMMON MODE VOLTAGE (mV)
Output Voltage vs. Temperature
-1
VOH
VOL
-1.2
-1.4
-45
-1.5
-32
-19
-6
7
20
33
46
59
72
10
85
5
0
100
1000
10000
RESISTANCE (Ohm)
TEMPERATURE (C)
Eye Diagram
1-3
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 [email protected]
HMC676LP3E
v01.0811
10 GHz LATCHED COMPARATOR
WITH RSECL OUTPUT STAGE
1
comparators - SMT
Timing Diagram
Timing Descriptions
Symbol
Timing
Description
tPDH
Input to output high delay
Propagation delay measured from the time the input signal crosses the reference
(± the input offset voltage) to the 50% point of an output low-to-high transition.
tPDL
Input to output low delay
Propagation delay measured from the time the input signal crosses the reference
(± the input offset voltage) to the 50% point of an output high-to-low transition.
tPLOH
Latch enable to output high delay
Propagation delay measured from the 50% point of the latch enable signal low-to-high
transition to the 50% point of an output low-to-high transition.
tPLOL
Latch enable to output low delay
Propagation delay measured from the 50% point of the latch enable signal low-to-high
transition to the 50% point of an output high-to-low transition.
tH
Minimum hold time
Minimum time after the positive transition of the latch enable signal that the input signal
must remain unchanged to be acquired and held at the outputs.
tPL
Minimum latch enable pulse width
Minimum time that the latch enable signal must be high to acquire an input signal
change.
tS
Minimum setup time
Minimum time before the positive transition of the latch enable signal that an input
signal change must be present to be acquired and held at the outputs.
tR
Output rise time
Amount of time required to transition from a low to a high output as measured at the
20% and 80% points.
tF
Output fall time
Amount of time required to transition from a high to a low output as measured at the
20% and 80% points.
Voltage overdrive
Difference between the input voltages VINP and VINN-
VOD
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 [email protected]
1-4
HMC676LP3E
v01.0811
comparators - SMT
1
1-5
10 GHz LATCHED COMPARATOR
WITH RSECL OUTPUT STAGE
Operational Description
The HMC676LP3E is a Latched Comparator with 10 GHz equivalent input bandwidth. The device is comprised of three
blocks: 1) An input amplifier, 2) A latch, and 3) An RSECL Output Buffer. The latching circuit is level sensitive, and
consists of a single high-speed latch. The HMC676LP3E comparator supports 10 Gb/s operation. The minimum input
data latching pulse width is 60 ps.
The HMC676LP3E operates in either Track (Transparent) Mode, where the output follows the logical value of the input, or
the Latch (Hold) Mode, where the output value is held to the logical value of the comparison result of the input just prior
to (LE - LE_bar) going HI. Track Mode operation is selected by either 1) (LE - LE_bar) LO, or 2) LE and LE_bar inputs
floating. Latch Mode is selected by (LE - LE_bar) HI. The input impedance of the LE and LE_bar inputs is 8 k ohms, but
these inputs can be terminated with 50 ohm external resistors if desired.
When DC coupled, the clock inputs operate at an input common mode voltage of 2 V. In this case, any termination
resistors would ideally be returned to 2 V. If the clock is AC coupled to the device, the input termination resistors can be
returned to ground.
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 [email protected]
HMC676LP3E
v01.0811
10 GHz LATCHED COMPARATOR
WITH RSECL OUTPUT STAGE
Input Supply Voltage (Vcci to GND)
-0.5 V to +4 V
Output Supply Voltage (Vcco to GND)
-0.5 V to +4 V
Positive Supply Voltage Differential
(Vcci - Vcco)
-0.5 V to +3.3 V
Input Voltage
-2 V to +2 V
Differential Input Voltage
-2 V to +2 V
Input Voltage, Latch Enable
-0.5 V to Vcci +0.5 V
Applied Voltage (HYS)
Vee to GND
Maximum Input Current
±1 mA
Output Current
40 mA
Storage Temperature
-65 °C to +150 °C
Junction Temperature
125 °C
Continuous Pdiss (T = 85 °C)
(Derate 43.5 mW/°C above 85 °C)
1.74 W
Thermal Resistance (Rth) (Junction to Lead)
23 °C/W
Operating Temperature
-40 °C to +85 °C
ESD Sensitivity (HBM)
Class 1A
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
comparators - SMT
1
Absolute Maximum Ratings
Outline Drawing
NOTES:
1. LEADFRAME MATERIAL: COPPER ALLOY
2. DIMENSIONS ARE IN INCHES [MILLIMETERS]
3. LEAD SPACING TOLERANCE IS NON-CUMULATIVE
4. PAD BURR LENGTH SHALL BE 0.15mm MAXIMUM.
PAD BURR HEIGHT SHALL BE 0.05mm MAXIMUM.
5. PACKAGE WARP SHALL NOT EXCEED 0.05mm.
6. ALL GROUND LEADS MUST BE SOLDERED TO PCB RF GROUND.
7. REFER TO HITTITE APPLICATION NOTE FOR SUGGESTED LAND PATTERN.
8. PADDLE MUST BE SOLDERED TO Vee.
Package Information
Part Number
Package Body Material
Lead Finish
HMC676LP3E
RoHS-compliant Low Stress Injection Molded Plastic
100% matte Sn
MSL Rating
MSL1
[1]
Package Marking [2]
H676
XXXX
[1] Max peak reflow temperature of 260 °C
[2] 4-Digit lot number XXXX
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 [email protected]
1-6
HMC676LP3E
v01.0811
comparators - SMT
1
Pin Descriptions
Pin Number
Function
Description
1
VTP
Termination resistor return pin for Vp Input.
2
INP
Non-Inverting analog input
3
INN
Inverting analog input
4
VTN
Termination resistor return pin for Vn input
5, 16
Vcci
Positive supply voltage input stage.
6
LE
Latch enable bar input pin, inverting side.
Refer to the Operational Description for more details.
7
LE
Latch enable input pin, non-inverting side.
Refer to the Operational Description for more details.
8
N/C
Pin is not connected inside the package.
Connect package pin to GND for improved noise.
9, 12
Vcco
Positive supply voltage for the output stage.
Q
Inverting output. Q bar is at logic low if the analog voltage
at the non-inverting input, INP, is greater than the analog
voltage at the inverting input, INN, provided that the
comparator is in compare mode. Refer to the Operational
Description for more details.
Q
Non-inverting output. Q is at logic high if the analog voltage
at the non-inverting input, INP, is greater than the analog
voltage at the inverting input, INN, provided that the
comparator is in compare mode. Refer to the Operational
Description for more details.
14
HYS
Hysteresis Control pin. This pin should be left disconnected
for zero hysteresis. Connect to Vee with a resistor to add
the desired amount of hysteresis. Refer to hysteresis graph
to determine the correct sizing of Rhys hysteresis control
resistor.
13
Vee
Negative power supply, -3 V.
15
RTN
Return for ESD protection.
Package Base
Exposed paddle must be connected to Vee.
10
11
1-7
10 GHz LATCHED COMPARATOR
WITH RSECL OUTPUT STAGE
Interface Schematic
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 [email protected]
HMC676LP3E
10 GHz LATCHED COMPARATOR
WITH RSECL OUTPUT STAGE
1
Evaluation PCB
Front Side
comparators - SMT
v01.0811
Back Side
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 [email protected]
1-8
HMC676LP3E
v01.0811
comparators - SMT
1
10 GHz LATCHED COMPARATOR
WITH RSECL OUTPUT STAGE
List of Materials for Evaluation PCB 125932 [1]
Item
Description
J1
8 Pos. Vertical TIN
J2 - J7
2.92 mm 40 GHz Jack
J8
Terminal Strip, Single Row 3 Pin SMT
JP1, JP2
2 Pos. Vertical TIN
C1 - C3, C5, C6,
C8 - C10
100 pF Capacitor, 0402 Pkg.
C4, C7, C11
330 pF Capacitor, 0402 Pkg.
C11 - C13
4.7 µF Tantalum
TP1 - TP4
DC Pin, Swage Mount
U1
HMC676LP3E Comparator
PCB
125929 Evaluation PCB
The circuit board used in the application should
use RF circuit design techniques. Signal lines
should have 50 Ohm impedance while the package ground leads should be connected directly
to the ground plane similar to that shown. A
sufficient number of via holes should be used to
connect the top and bottom ground planes in order
to provide good RF grounding to 25 GHz. The
evaluation circuit board shown is available from Hittite upon request.
[1] Reference this number when ordering complete evaluation PCB
[2] Circuit Board Material: Rogers 4350 or Arlon 25FR
Application Circuit
1-9
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 [email protected]
HMC676LP3E
v01.0811
10 GHz LATCHED COMPARATOR
WITH RSECL OUTPUT STAGE
1
comparators - SMT
Notes:
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 [email protected]
1 - 10