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MAX3964AETP+T

P1-P3P4-P6P7-P9P10-P11
General Description
The MAX3969 is a recommended upgrade for the
MAX3964 and MAX3968. The MAX3964A limiting amplifi-
er, with 2mV
P-P
input sensitivity and PECL data outputs, is
ideal for low-cost ATM, FDDI, and Fast Ethernet fiber
optic applications.
The MAX3964A features an integrated power detector
that senses the input-signal power. It provides a
received-signal-strength indicator (RSSI), which is an
analog indication of the power level and complementary
PECL loss-of-signal (LOS) outputs, which indicate when
the power level drops below a programmable threshold.
The threshold can be adjusted to detect signal ampli-
tudes as low as 2.7mV
P-P
. An optional squelch function
disables switching of the data outputs by holding them at
a known state during an LOS condition.
The MAX3968 provides the same functionality as the
MAX3964A, but has data-output edge speed suitable for
ESCON and 266Mbps fibre channel applications.
The MAX3964A/MAX3968 are available in die form, as
tested wafers, and in 20-pin QSOP packages. The
MAX3964AETP is available in a 20-pin thin QFN package.
Applications
125Mbps FDDI Receivers
155Mbps LAN ATM Receivers
Fast Ethernet Receivers
ESCON Receivers
155Mbps FTTx Receivers
Features
♦ Single Supply: +3.0V to +5.5V
♦ 2mV
P-P
Input Sensitivity
♦ 1.2ns Output Edge Speed
♦ Loss-of-Signal Detector with Programmable
Threshold
♦ Analog Received-Signal-Strength Indicator
♦ Output Squelch Function
♦ Compatible with 4B/5B Data Coding
MAX3964A/MAX3968
+3.0V to +5.5V, 125Mbps to 266Mbps
Limiting Amplifiers with Loss-of-Signal Detector
________________________________________________________________ Maxim Integrated Products 1
Ordering Information
MAX3964A
MAX3968
CZN
CZP
RSSI
LOS+
V
CC
C
AZ
1µF
V
CC
V
CC
FILTER
V
CC0
OUT-
GND
FILTER
10nF
C
IN
4700pF
C
IN
4700pF
0.1µF
OUT+
155Mbps
TIA
IN
IN-
IN+
LOS-
OUT-
OUT+
SUB*
GND
R2
50Ω
50Ω
50Ω
50Ω
R1
≥100kΩ
INV
*PIN NOT AVAILABLE ON MAX3964AETP.
V
CC
- 2V
SQUELCH
V
CC
V
CC
PHOTODIODE
V
TH
Typical Operating Circuit
19-1314; Rev 5; 8/06
Pin Configurations and Selector Guide appear at end of data
sheet.
*Dice are designed to operate over a 0°C to +100°C junction
temperature (Tj) range, but are tested and guaranteed only at T
A
= +25°C.
**Package Code: T2044-1
+Denotes lead-free package.
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
PART TEMP RANGE PIN-PACKAGE
MAX3964AETP -40°C to +85°C 20 Thin QFN**
MAX3964AETP+
-40°C to +85°C 20 Thin QFN**
MAX3964AC/D -40°C to +85°C
Dice*
MAX3968CEP 0°C to +70°C 20 QSOP
MAX3968C/D 0°C to +70°C Dice*
EVALUATION KIT
AVAILABLE
MAX3964A/MAX3968
+3.0V to +5.5V, 125Mbps to 266Mbps
Limiting Amplifiers with Loss-of-Signal Detector
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS—MAX3964ACEP/MAX3968CEP
(V
CC
= +3.0V to +5.5V, PECL outputs terminated with 50Ω to (V
CC
- 2V), T
A
= 0°C to +70°C, unless otherwise noted. Typical values
are at V
CC
= +3.3V and T
A
= +25°C.) (Note 1)
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.
(SUB, GND tied to ground)
V
CC
, V
CCO
.............................................................-0.5V to +7.0V
FILTER, RSSI, IN+, IN-, CZP, CZN, SQUELCH,
LOS+, LOS-, INV, VTH, OUT+, OUT- ......-0.5V to (V
CC
+ 0.5V)
PECL Output Current (OUT+, OUT-, LOS+, LOS-) ............50mA
Differential Voltage Between CZP and CZN..........-1.5V to +1.5V
Differential Voltage Between IN+ and IN- .............-1.5V to +1.5V
Continuous Power Dissipation (T
A
= +70°C)
20-Lead Thin QFN
(derate 16.9mW/°C above +70°C) ..........................1349mW
20-Pin QSOP (derate 6.7mW/°C above +70°C)...........500mW
Operating Temperature Range ...........................-40°C to +85°C
Operating Junction Temperature Range (die) .....-40°C to +150°C
Processing Temperature (die) ........................................+400°C
Storage Temperature Range .......................... -65°C to +160°C
Lead Temperature (soldering, 10s) ................................+300°C
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX
UNITS
Supply Current I
CC
PECL outputs open 22 40 mA
LOS Hysteresis Input = 3.3mV
P-P
to 90mV
P-P
(Note 2) 3.8 5 8.0 dB
SQUELCH Input Current V
SQUELCH
= V
CC
, T
A
= +25°C 27
100
µA
PECL Output Voltage High (Note 3)
-1025 -880
mV
PECL Output Voltage Low (Note 3)
-1810 -1620
mV
PECL LOS Output Voltage High (Note 3)
-1035 -880
mV
PECL LOS Output Voltage Low (Note 3)
-1810 -1620
mV
LOS Assert Accuracy Input = 7mV
P-P
or 90mV
P-P
-2.5 +2.5
dB
Minimum LOS Assert Input 2.7
mV
P-P
Maximum LOS Deassert Input
143
mV
P-P
Input Sensitivity 2.0 3.3
mV
P-P
Input Overload 1.5 V
P-P
20% to 80% transition time, MAX3964A
0.92
1.2
2.20
Output Transition Time t
r
, t
f
MAX3968 0.4 0.8 1.2
ns
Pulse-Width Distortion (Note 4) 50
200
ps
MAX3964A/MAX3968
+3.0V to +5.5V, 125Mbps to 266Mbps
Limiting Amplifiers with Loss-of-Signal Detector
_______________________________________________________________________________________ 3
Note 1: Dice are tested and guaranteed at T
A
= +25°C only.
Note 2: LOS hysteresis = 20log(V
LOS-DEASSERT
/ V
LOS-ASSERT
).
Note 3: Voltage measurements are relative to supply voltage (V
CC
).
Note 4: PWD = [(width of wider pulse) - (width of narrower pulse)] / 2, measured with 100Mbps 1-0 pattern.
ELECTRICAL CHARACTERISTICS—MAX3964AETP
(V
CC
= +3.0V to +5.5V, PECL outputs terminated with 50Ω to (V
CC
- 2V), T
A
= -40°C to +85°C. Typical values measured at V
CC
=
+3.3V and T
A
= +25°C, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN
MAX
UNITS
Supply Current I
CC
PECL outputs open 22 45 mA
LOS Hysteresis Input = 4.0mV
P-P
(Note 2) 3.0 5 8.0 dB
SQUELCH Input Current 27
100
µA
PECL Output Voltage High (Note 3)
-1.085 -0.880
V
PECL Output Voltage Low (Note 3)
-1.830 -1.550
V
Input = 7mV
P-P
or 90mV
P-P
, 0°C to +85°C -3 +3
LOS Assert Accuracy
Input = 7mV
P-P
or 90mV
P-P
, -40°C to 0°C
-3.6 +3.6
dB
Minimum LOS Assert Input 2.7
mV
P-P
Maximum LOS Deassert Input
143
mV
P-P
Input Sensitivity 24
mV
P-P
Input Overload 1.5 V
P-P
Output Transition Time t
r
, t
f
20% to 80% 1.6 2.4 ns
Pulse-Width Distortion (Note 4) 50
250
ps
P-P
Typical Operating Characteristics
(MAX3964A EV kit, V
CC
= +3.3V, decibels (dB) calculated as 20 log ∆V, PECL outputs terminated with 50Ω to (V
CC
- 2V), T
A
= +25°C,
unless otherwise noted.)
1.00
1 100 1k10
RSSI VOLTAGE vs. INPUT AMPLITUDE
2.00
3.00
1.50
2.50
MAX3964/65toc01
INPUT AMPLITUDE (mV)
V
RSSI
(V)
INPUT PATTERN IS 2
23 -
1 PRBS
LOS DEASSERTED
LOS ASSERTED
1.5
1.6
1.7
1.9
1.8
2.0
2.2
2.1
2.3
-40 0 20-20 40 60 80 100
RSSI VOLTAGE vs. TEMPERATURE
MAX3964/65toc02
TEMPERATURE (°C)
V
RSSI
(V)
INPUT = 100mV
INPUT = 10mV
INPUT = 5mV
100
30
1 100 1k10 10k
PULSE-WIDTH DISTORTION
vs. INPUT AMPLITUDE
40
50
60
MAX3964/65toc03
INPUT AMPLITUDE (mV
P-P
)
PWD (ps)
70
80
90
P1-P3P4-P6P7-P9P10-P11

MAX3964AETP+T

Mfr. #:
Buy MAX3964AETP+T
Manufacturer:
Maxim Integrated
Description:
Limiting Amplifiers 3-5.5V 125-266Mbps Limiting Amp
Lifecycle:
New from this manufacturer.
Delivery:
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