19-0379; Rev 1; 11/99
155Mbps/622Mbps Clock Recovery and
Data Retiming IC with Fully Integrated
Phase/Frequency Detector
_______________General Description
The MAX3270 is a complete Clock Recovery and Data
Retiming IC for 155Mbps and 622Mbps SDH/SONET
and ATM applications. The MAX3270 meets Bellcore
and CCITT jitter tolerance specifications ensuring error-
free data recovery. Recovered clock and data are
phase aligned using a fully integrated phase-locked
loop (PLL). An output frequency monitor (FM) is includ-
ed to detect loss of PLL acquisition or a loss of input
data.
The MAX3270 has differential ECL input and output
interfaces, so it is less susceptible to noise in a high-
frequency environment. The fully integrated PLL
includes an integrated phase-frequency detector that
eliminates the need for external references.
____________________________Features
o
Supports Both 155Mbps and 622Mbps Clock
Recovery and Data Retiming
o
Fully Integrated Phase/Frequency Detector
o
Capable of Switching to an External Clock
o
Differential 100K ECL Data and Clock I/Os
o
Output Monitor Provides Lock Detection
o
No External Reference Clock Required
MAX3270
________________________Applications
155Mbps (STM-1/OC-3)/622Mbps (STM-4/
OC-12) SDH/SONET Transmission Systems
155Mbps/622Mbps ATM/SONET Access Nodes
Add/Drop Multiplexers
Cross-Connects
PART
MAX3270EMH
Ordering Information
TEMP. RANGE
-40°C to +85°C
PIN-PACKAGE
44 MQFP
Pin Configuration appears at end of data sheet.
____________________________________________________Typical Operating Circuit
-2V
+5V
11
VTTL
3
50Ω
-2V
50Ω
-2V
+5V
4
41
42
13
18
20
14
SDIP
39
DVCC
17 19
DVCC
DVCC
38
DVCC
7
AVCC
16
AVCC
15
AVCC
5
AVCC
24
OVCC
27
OVCC
29
OVCC
32
OVCC
RDOP
RDON
RCOP
RCON
SDIN
PHADJ
VR
EXCS
CRS
RST
EXC
2
-2V
EXCS AND CRS ARE CONNECTED FOR
622Mbps OPERATION.
-4.5V
-4.5V
-4.5V
ANALOG SUPPLY
CRP
26
25
31
30
28
50Ω
50Ω
50Ω
50Ω
450Ω
-4.5V
MAX3270
FILP
FILG
AVEE1
AVEE2
GVEE
DVEE
DVEE
DVEE
DVEE
DVEE
FILN
FM
9
8
10
6
2.2µF
20Ω
2.2µF
20Ω
50Ω
12
1
35
36 22 21 34
-4.5V
DIGITAL
SUPPLY
BYPASS SUPPLIES WITH 0.1µF AND 0.01µF CAPACITORS.
DECOUPLE AVEE1, AVEE2, AND GVEE SUPPLY PINS.
________________________________________________________________
Maxim Integrated Products
1
For free samples and the latest literature, visit www.maxim-ic.com or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
155Mbps/622Mbps Clock Recovery and
Data Retiming IC with Fully Integrated
Phase/Frequency Detector
MAX3270
ABSOLUTE MAXIMUM RATINGS
Supply Voltages
VTTL to GND .....................................................-0.5V to +8.0V
V
CC
to GND .......................................................-0.5V to +8.0V
V
EE
to GND........................................................-8.0V to +0.5V
SDIP, SDIN, EXC ...................................................-8.0V to +0.5V
RDOP, RDON, RCOP, RCON, CRP.......................-8.0V to +0.5V
EXCS, RST, CRS....................................................-0.5V to +8.0V
FILP, FILG, FILN ....................................................-8.0V to +0.5V
PHADJ, VR ............................................................-8.0V to +8.0V
FM .........................................................................-8.0V to +8.0V
Input Differential Voltage Level, SDIP, SDIN ......................+3.0V
Continuous Power Dissipation (T
A
= +85°C) .......................1.3W
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range .............................-55°C to +150°C
Lead Temperature (soldering, 10sec) .............................+300°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(V
EE
= -4.5V ±5%, VTTL = 5V ±5%, T
A
= -40°C to +85°C, unless otherwise noted.)
PARAMETER
Positive Voltage Supply
(with respect to ground)
Negative Voltage Supply
(with respect to ground)
Static Supply Current from VTTL
Static Supply Current from V
EE
ECL INPUTS: EXC, SDIP, SDIN
Input High Voltage
Input Low Voltage
Input High Current
Input Low Current
Output High Voltage
Output Low Voltage
LOW-POWER ECL OUTPUT: CRP
Output High Voltage
Output Low Voltage
TTL INPUTS: CRS, RST, EXCS
Input High Voltage
Input Low Voltage
Input High Current
Input Low Current
PHASE ADJUST INPUTS: PHADJ, VR
Input Bias Current
I
BIAS
VR = PHADJ = 0, T
A
= +25°C
0
10
µA
V
IH
V
IL
I
IH
I
IL
VTTL = 5.00V, VIN = 2V
VTTL = 5.00V, VIN = 0.8V
0
0
2
0.8
40
40
V
V
µA
µA
V
OH
V
OL
Loaded with 470Ω to V
EE
Loaded with 470Ω to V
EE
-1025
-1830
-955
-1705
-870
-1620
mV
mV
V
IH
V
IL
I
IH
I
IL
V
OH
V
OL
V
IN
= V
OH
(typ)
V
IN
= V
OL
(typ)
Loaded with 50Ω to -2V
Loaded with 50Ω to -2V
-1165
-1830
0
-100
-1025
-1830
-955
-1705
-870
-1475
100
100
-870
-1550
mV
mV
µA
nA
mV
mV
SYMBOL
V
TTL
V
EE
I
TTL
I
VEE
CONDITIONS
MIN
4.75
-4.725
TYP
5.00
-4.50
2.4
150
MAX
5.25
-4.275
5
210
UNITS
V
V
mA
mA
ECL OUTPUTS: RCOP, RCON, RDOP, RDON
2
_______________________________________________________________________________________
155Mbps/622Mbps Clock Recovery and
Data Retiming IC with Fully Integrated
Phase/Frequency Detector
AC ELECTRICAL CHARACTERISTICS (continued)
(V
EE
= -4.5V, VTTL = 5V, T
A
= 25°C, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
Loaded with 50Ω to -2V and
5pF to GND
Loaded with 50Ω to -2V and
5pF to GND
MIN
TYP
MAX
UNITS
MAX3270
ECL OUTPUTS: RDOP, RDON, RCOP, RCON
Transition Time 20% to 80%
Time Difference between RDO and RCO
t
r
, t
f
TD
600
100
ps
ps
PFD AND FILTER AMPLIFIER TEST LEVELS
Output Offset Voltage of the
Monitor Amplifier
Gain of the Monitor Amplifier
Filter Amplifier Open-Loop Voltage Gain
VCO TEST PARAMETERS; CPR OUTPUT
Center Frequency
Frequency Range
Mean Frequency Sensitivity
Frequency Sensitivity to
Power-Supply Voltage
PLL ELECTRICAL SPECIFICATIONS
Frequency of VCO
Incremental Tuning Sensitivity
(Incremental Slope,
∆f/∆Vt)
Phase-Detector Gain
Transconduction Gain of Filter Amplifier
Phase Offset Sensitivity,
∆Φ/∆PHADJ
F
O
DF
O
K
O
K
OV
FILP and FILN shorted,
PFD = neutral state
FILP - FILN = 1.6V
FILP - FILN = 1.6V
FILP and FILN shorted
38.00
6
3.75
39.50
10
6
550
MHz
MHz
MHz/V
kHz/V
V
O
GFM
GOL
PHADJ = 0, FILP and FILN shorted
PHADJ = 0
FILP and FILN open
-35
0.95
21
26
35
1.05
mV
V/V
dB
F
O
K
O
KD
Gm
K
PHADJ
ft = 622.08MHz
622.08
75
192
1.25
2
MHz
MHz/V
mV/rad
mA/V
rad/V
__________________________________________Typical Operating Characteristics
V
EE
SUPPLY CURRENT
vs. TEMPERATURE
MAX3270-TOC9
CRP FREE-RUNNING FREQUENCY (VCO/16)
vs. DIE TEMPERATURE
MAX3270-TOC5
190
185
V
EE
SUPPLY CURRENT (mA)
180
175
170
165
160
155
150
-40
-20
0
20
40
60
80
-4.25V
-4.5V
-4.75V
39.0
38.9
FREQUENCY (MHz)
38.8
38.7
38.6
38.5
38.4
38.3
MEASURED
100
0
10 20 30 40 50 60 70 80 90 100
TEMPERATURE (°C)
TEMPERATURE (°C)
_______________________________________________________________________________________
3
155Mbps/622Mbps Clock Recovery and
Data Retiming IC with Fully Integrated
Phase/Frequency Detector
MAX3270
_____________________________Typical Operating Characteristics (continued)
JITTER TOLERANCE
(155Mbps, 2
23
-1 PRBS)
MAX3270-TOC1
10.0
AMPLITUDE (UI p-p)
1.0
DATA
0.1
10
100
1k
FREQUENCY (Hz)
10k
100k
BELLCORE
MASK
1M
JITTER TOLERANCE
(622Mbps, 2
23
-1 PRBS)
MAX3270-TOC2
10.0
AMPLITUDE (UI p-p)
1.0
DATA
BELLCORE
MASK
0.1
10
100
1k
FREQUENCY (Hz)
10k
100k
1M
4
_______________________________________________________________________________________
155Mbps/622Mbps Clock Recovery and
Data Retiming IC with Fully Integrated
Phase/Frequency Detector
_____________________________Typical Operating Characteristics (continued)
155Mbps RECOVERED CLOCK AND
RETIMED DATA (SINGLE ENDED)
622Mbps RECOVERED CLOCK AND
RETIMED DATA (SINGLE ENDED)
MAX3270
DATA
DATA
CLOCK
CLOCK
2ns/div
500ps/div
RECOVERED CLOCK JITTER
(155Mbps, 2
7
-1 PRBS, 5.1ps RMS)
RECOVERED CLOCK JITTER
(155Mbps, 1-0 PATTERN, 4.7ps RMS)
RECOVERED CLOCK JITTER
(622Mbps 2
7
-1 PRBS 9.0ps RMS)
R
F
= 20Ω
C
F
= 2.2µF
R
F
= 20Ω
C
F
= 2.2µF
R
F
= 20Ω
C
F
= 2.2µF
10ps/div
Mean 40.61ns
RMS∆ 5.13ps
PkPk 45.6ps
µ±1σ
µ±2σ
µ±3σ
68.961%
95.844%
99.717%
Mean 40.65ns
RMS∆ 4.7ps
PkPk 38.4ps
10ps/div
µ±1σ
µ±2σ
µ±3σ
69.674%
95.558%
99.698%
Mean 38.68ns
RMS∆ 9.049ps
PkPk 79.4ps
10ps/div
µ±1σ
µ±2σ
µ±3σ
69.747%
95.453%
99.582%
_______________________________________________________________________________________
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