Time Delay. HMC856 Datasheet

HMC856 Delay. Datasheet pdf. Equivalent

HMC856 Datasheet
Recommendation HMC856 Datasheet
Part HMC856
Description Digital Time Delay
Feature HMC856; Data Sheet 28 Gbps, 5-Bit, Digital Time Delay with Programmable Output Voltage HMC856 FEATURES Dif.
Manufacture Analog Devices
Datasheet
Download HMC856 Datasheet




Analog Devices HMC856
Data Sheet
28 Gbps, 5-Bit, Digital Time Delay with
Programmable Output Voltage
HMC856
FEATURES
Differential and single-ended operation
Supports data rates up to 28 Gbps
Fast rise/fall time: 20 ps/18 ps
Low power consumption: 610 mW typical
Programmable differential
Output voltage swing: 500 mV p-p to 1350 mV p-p
Single supply: −3.3 V
5 mm × 5 mm, 32-terminal ceramic leadless chip carrier (LCC)
package: 25 mm2
APPLICATIONS
SONET OC-192
High speed serial logic
Clock and data recovery
Broadband test and measurement equipment
Frequency synthesis
Matched timing
GENERAL DESCRIPTION
The HMC856 is a wideband time delay device with a 5-bit
digital control designed for timing compensation or clock skew
management applications. The time delay provides nearly
100 ps (maximum) 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 HMC856 are current mode logic
(CML) and terminated on chip with 50 Ω to the positive supply
ground, GND, and can be ac or dc-coupled. The differential CML
FUNCTIONAL BLOCK DIAGRAM
GND 1
I+ 2
I– 3
GND 4
GND 5
B0+ 6
B0– 7
NC 8
50Ω HMC856 50Ω
DELAY
50Ω 50Ω
600Ω
600Ω
600Ω 600Ω
600Ω
24 GND
23 O+
22 O–
21 GND
20 GND
19 B4+
18 B4–
17 NC
Figure 1.
PACKAGE
BASE
VEE
outputs are source terminated to 50 Ω and can also be ac or dc-
coupled. Connect outputs directly to a 50 Ω ground terminated
system or drive devices with CML logic input. The control lines,
B4 to B0, are differential CML inputs terminated with 600 Ω to
the positive rail, which supports lower power control options.
The HMC856 features an output level control pin, VR, that
allows loss compensation or signal level optimization. The
HMC856 operates from a single −3.3 V supply and is available
in a 5 mm × 5 mm LCC package.
Rev. D
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Analog Devices HMC856
HMC856
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications....................................................................................... 1
Functional Block Diagram .............................................................. 1
General Description ......................................................................... 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Electrical Specifications............................................................... 3
Timing Diagram ........................................................................... 3
Absolute Maximum Ratings............................................................ 4
ESD Caution.................................................................................. 4
REVISION HISTORY
6/2018—Rev. C to Rev. D
Changes to Figure 1.......................................................................... 1
Changes to Resolution Parameter, Table 1 and Figure 2 ............. 3
Changes to Figure 22 Caption and Figure 23 ............................... 9
Changes to Theory of Operation Section.................................... 10
Changes to Figure 25...................................................................... 12
Changes to Ordering Guide .......................................................... 13
This Hittite Microwave Products data sheet has been reformatted to
meet the styles and standards of Analog Devices, Inc.
12/2016—Rev. 01.0611 to Rev. C
Updated Format..................................................................Universal
Changes to Features Section, General Description Section, and
Figure 1 .............................................................................................. 1
Added Power Consumption Parameter, Table 1 .......................... 3
Changes to Figure 2.......................................................................... 3
Changes to Table 2............................................................................ 4
Changes to Figure 3 and Table 3..................................................... 5
Changes to Typical Performance Characteristics Section........... 7
Added Theory of Operation Section ........................................... 10
Changes to Table 4 and Figure 24 Caption ................................. 11
Changes to Figure 25...................................................................... 12
Updated Outline Dimensions ....................................................... 13
Changes to Ordering Guide .......................................................... 13
Data Sheet
Pin Configuration and Function Descriptions..............................5
Interface Schematics .....................................................................6
Typical Performance Characteristics ..............................................7
Theory of Operation ...................................................................... 10
Applications Information .............................................................. 11
Evaluation Printed Circuit Board (PCB) ................................ 11
Typical Application Circuit....................................................... 12
Outline Dimensions ....................................................................... 13
Ordering Guide .......................................................................... 13
Rev. D | Page 2 of 13



Analog Devices HMC856
Data Sheet
SPECIFICATIONS
ELECTRICAL SPECIFICATIONS
TA = 25°C, VEE = −3.3 V, VR = 0 V, unless otherwise noted.
Table 1.
Parameter
POWER SUPPLY
Voltage
Current
POWER CONSUMPTION
MAXIMUM DATA RATE
INPUT VOLTAGE
Single-Ended
Differential
OUTPUT
Rise/Fall Time
Single-Ended Amplitude
Differential Amplitude
High Voltage
Low Voltage
RETURN LOSS
Input
Output
JITTER
Random
Deterministic
VR PIN CURRENT
DELAY
Propagation Delay Data to Data
Control Range
Temperature Variation
Resolution
Symbol
VEE
Test Conditions/Comments
CML logic input
tR, tF Differential, 20% to 80%
Frequency <12 GHz
JR RMS
JD 215 − 1 pseudo random binary sequence (PRBS)
28 Gbps input
VR = 0 V
VR = 0.4 V
tPROP
tPROG_DELAY
TA = 85°C
TA = −40°C
TIMING DIAGRAM
HMC856
Min Typ Max Unit
−3.7 −3.3
185
610
−2.9 V
mA
mW
28 Gbps
−1.5 +0.5 V
0.1 2.0 V
20/18
ps
565 mV p-p
500 1130 1350 mV p-p
−20 mV
−585
mV
10 dB
10 dB
0.2 ps rms
<2 ps p-p
3 mA
4.25 mA
255 ps
92 ps
9 12 ps
4 8 ps
3 ps
I± 1
tPROP
2
1
tPROG_DELAY
3456
12
80%
80%
3
20% 4 20%
5
Figure 2. Timing Diagram
tF
tR
Rev. D | Page 3 of 13







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