MAX3761 Maxim, MAX3761 Datasheet
MAX3761
Manufacturer Part Number
MAX3761
Description
Low-Power / 622Mbps Limiting Amplifiers with Chatter-Free Power Detect for LANs
Manufacturer
Maxim
Datasheet
1.MAX3761.pdf
(12 pages)
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Part Number:
MAX3761EEP
Manufacturer:
MAXIM/美信
Quantity:
20 000
Company:
Part Number:
MAX3761EEP+
Manufacturer:
Maxim Integrated Products
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MAX3761EEP+
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The MAX3761/MAX3762 limiting amplifiers, with 4mV
sensitivity and PECL data outputs, are optimized for
operation in low-cost, 622Mbps, LAN/ATM LAN fiber
optics applications.
An integrated power detector senses the input signal’s
amplitude. A received-signal-strength indicator (RSSI)
gives an analog indication of the power level, while the
complementary loss-of-signal (LOS) outputs indicate if
the input power level exceeds the programmed
threshold level. The LOS threshold can be adjusted to
detect signal amplitudes between 3mVp-p and
100mVp-p, providing a 15dB LOS adjustment in fiber
optic receivers. The LOS outputs have 3.5dB of
hysteresis, which prevents chatter when input signal
levels are small. The MAX3761’s LOS outputs are com-
patible with TTL-logic levels. The MAX3762 has PECL
LOS outputs.
DISABLE and LOS can be used to implement a squelch
function, which turns off the data outputs when the
input signal is below the programmed threshold.
19-1097; Rev 1; 9/96
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800
________________________Applications
__________________Pin Configuration
_______________General Description
TOP VIEW
622Mbps LAN/ATM LAN Receivers
155Mbps LAN/ATM LAN Receivers
FILTER
RSSI
VIN+
GND
VIN-
SUB
CZN
CZP
V
EN
CC
________________________________________________________________ Maxim Integrated Products
10
1
2
3
4
5
6
7
9
8
MAX3761
MAX3762
with Chatter-Free Power Detect for LANs
QSOP
Low-Power, 622Mbps Limiting Amplifiers
13
20
19
18
17
16
15
14
12
11
DISABLE
LOS+
LOS-
V
VCCO
OUT+
OUT-
GNDO
VTH
INV
CC
____________________________Features
* Dice are designed to operate from -40°C to +85°C, but are
tested and guaranteed only at T
_________Typical Operating Circuits
______________Ordering Information
MAX3761EEP
MAX3761C/D
MAX3762EEP
MAX3762C/D
BYPASS
SUPPLY
MAX3762 at end of data sheet.
Chatter-Free Power Detector with Programmable
Loss-of-Signal Outputs
4mV Input Sensitivity (PECL Loss-of-Signal
Interface Logic—MAX3766
PECL Data Outputs
Single 5V Power Supply
250ps Output Edge Speed
Low 15ps Pulse-Width Distortion
TTL Loss-of-Signal Interface Logic—MAX3761
100pF
+5V
PART
100pF
+V
CC
5.6nF
5.6nF
C
10nF
C
C
FILTER
100k
IN
R1
IN
TEMP. RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
RSSI
FILTER
V
EN
VCCO
VIN+
VIN-
INV
CC
MAX3761
A
22k
R2
= +25°C.
CZP
DISABLE
VTH
GNDO
LOS-
OUT-
OUT+
LOS+
GND
CZN
SUB
20 QSOP
Dice*
20 QSOP
Dice*
PIN-PACKAGE
50
C
150pF
AZ
V
CC
50
- 2V
1
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