MAX3968 Maxim Integrated Products, MAX3968 Datasheet
MAX3968
Manufacturer Part Number
MAX3968
Description
(MAX3964 - MAX3968) 125Mbps to 266Mbps Limiting Amplifiers
Manufacturer
Maxim Integrated Products
Datasheet
1.MAX3968.pdf
(12 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MAX3968ABCEG
Manufacturer:
LT
Quantity:
11
Part Number:
MAX3968CEP
Manufacturer:
MAXIM/美信
Quantity:
20 000
The MAX3964 limiting amplifier, with 2mV
sensitivity and PECL data outputs, is ideal for low-cost
ATM, FDDI, and Fast Ethernet fiber optic applications.
The MAX3964 features an integrated power detector that
senses the input-signal power. It provides a received-sig-
nal-strength indicator (RSSI), which is an analog indica-
tion 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 amplitudes as
low as 2.7mVp-p. An optional squelch function disables
switching of the data outputs by holding them at a known
state during an LOS condition.
The MAX3965 provides the same functionality, but
offers TTL-compatible LOS outputs. The MAX3968 pro-
vides the same functionality as the MAX3964, but has
data-output edge speed suitable for ESCON and
266Mbps fibre channel applications.
The MAX3964/MAX3965/MAX3968 are available in die
form, as tested wafers, and in 20-pin QSOP packages.
The MAX3964ETP is available in a 20-pin thin QFN
package.
19-1314; Rev 1; 10/02
Pin Configurations appear at end of data sheet.
Selector Guide appears at end of data sheet.
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.
Limiting Amplifiers with Loss-of-Signal Detector
125Mbps FDDI Receivers
155Mbps LAN ATM Receivers
155Mbps FTTx Receivers
Fast Ethernet Receivers
ESCON Receivers
V
CC
PHOTODIODE
________________________________________________________________ Maxim Integrated Products
General Description
IN
+3.0V to +5.5V, 125Mbps to 266Mbps
155Mbps
GND
V
V
TIA
CC
CC
Applications
OUT+
OUT-
(MAX3965 ONLY)
V
CC
P-P
10nF
input
≥100k
10nF
10nF
C
C
R1
FILTER
10nF
IN
IN
♦ Single Supply: +3.0V to +5.5V
♦ 2mV
♦ 1.2ns Output Edge Speed
♦ Loss-of-Signal Detector with Programmable
♦ Analog Received-Signal-Strength Indicator
♦ Output Squelch Function
♦ Choice of TTL or PECL LOS Outputs
♦ Compatible with 4B/5B Data Coding
*Dice and wafers are designed to operate over a 0°C to +100°C
junction temperature (Tj) range, but are tested and guaranteed
only at T
MAX3964CEP
MAX3964C/D
MAX3964C/DW
MAX3964ETP
MAX3965CEP
MAX3965C/D
MAX3965C/DW
MAX3968CEP
MAX3968C/D
MAX3968C/DW
FILTER
V
V
IN-
IN+
GNDO
Threshold
CC0
CC
INV
PART
MAX3964
MAX3965
MAX3968
P-P
A
R2
= +25°C.
CZP
Input Sensitivity
SQUELCH
V
TH
OUT+
SUB*
LOS+
OUT-
RSSI
LOS-
GND
CZN
Typical Operating Circuit
*PIN NOT AVAILABLE ON MAX3964ETP.
-40
TEMP RANGE
0
0
0
0
0
0
0
0
0
Ordering Information
50
C
27nF
o
o
o
o
o
o
o
o
o
o
C to +70
C to +70
C to +70
C to +85
C to +70
C to +70
C to +70
C to +70
C to +70
C to +70
AZ
Ω
50Ω
o
o
o
o
o
o
o
o
o
o
C
C
C
C
C
C
C
C
C
C
LOS TERMINATIONS
ARE USED ONLY
FOR THE MAX3964
AND MAX3968
50Ω
PIN-PACKAGE
20 QSOP
Dice*
Wafers*
20 Thin QFN
20 QSOP
Dice*
Wafers*
20 QSOP
Dice*
Wafers*
50Ω
V
CC
Features
- 2V
1
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