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MAX3761, MAX3762
Low-Power, 622Mbps Limiting Amplifiers with Chatter-Free Power Detect for LANs
Generates Only 15ps PWD and Has 4mV Input Sensitivity
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Status
Active: In Production.
Description
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 compatible 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.
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Data Sheet
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An evaluation kit is available: MAX3761EVKIT MAX3762EVKIT
Key Features
- Chatter-Free Power Detector with Programmable Loss-of-Signal Outputs
- 4mV Input Sensitivity
- PECL Data Outputs
- Single 5V Power Supply
- 250ps Output Edge Speed
- Low 15ps Pulse-Width Distortion
- TTL Loss-of-Signal Interface Logic—MAX3761
- PECL Loss-of-Signal Interface Logic—MAX3762
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Applications/Uses
- 155Mbps LAN/ATM LAN Receivers
- 622Mbps LAN/ATM LAN Receivers
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Key Specifications:
| Limiting Amplifiers |
| Part Number |
Target Oper. Range
(Gbps) |
Data Rate
(Mbps) |
Data Rate
(Mbps) |
VSUPPLY
(V) |
ICC
(mA) |
I/O Type |
Input Sens.
(mV) |
LOS Sens.
(mV) |
Edge Speed
(ps) |
EV Kit |
Package/Pins |
Smallest Available Pckg.
(mm2) |
Budgetary Price |
| min |
max |
typ |
min |
max |
max w/pins |
See Notes |
| MAX3761 |
<1 |
155 |
622 |
5 |
25 |
PECL |
4 |
3.2 |
250 |
Yes |
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54.2 |
$4.12 @1k |
| MAX3762 |
30 |
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$4.12 @1k |
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See All Limiting Amplifiers (16)
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Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.
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Diagram
Typical Operating Circuit
Typical Operating Circuit
Product Guides
Reliability Reports
Software/Models
Ordering Information
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Part Number
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Free
Sample |
Buy |
Status
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Package:
TYPE PINS FOOTPRINT
DRAWING CODE/VAR *
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Temp |
RoHS/Lead-Free?
Materials Analysis
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| MAX3761E/D
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Active |
DICE SALES;NA pin;DICE;
Land Pattern: Not Applicable
Use pkgcode/variation: DICE*
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See data sheet
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| MAX3761EEP
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Active |
QSOP;20 pin;54.2 mm²
Outline Drawing:21-0055 (PDF)
Land Pattern: 90-0168 (PDF)
Use pkgcode/variation: E20-1*
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-40°C to +85°C
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RoHS/Lead-Free: No
Materials Analysis |
| MAX3761EEP+
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Active |
QSOP;20 pin;54.2 mm²
Outline Drawing:21-0055 (PDF)
Land Pattern: 90-0168 (PDF)
Use pkgcode/variation: E20+1*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX3761EEP+T
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Active |
QSOP;20 pin;54.2 mm²
Outline Drawing:21-0055 (PDF)
Land Pattern: 90-0168 (PDF)
Use pkgcode/variation: E20+1*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX3761EEP-T
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Active |
QSOP;20 pin
Land Pattern: Not Available
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-40°C to +85°C
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See data sheet
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| MAX3762E/D
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Active |
DICE SALES;NA pin;DICE;
Land Pattern: Not Applicable
Use pkgcode/variation: DICE*
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See data sheet
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| MAX3762EEP
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Active |
QSOP;20 pin;54.2 mm²
Outline Drawing:21-0055 (PDF)
Land Pattern: 90-0168 (PDF)
Use pkgcode/variation: E20-1*
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-40°C to +85°C
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RoHS/Lead-Free: No
Materials Analysis |
| MAX3762EEP+
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Active |
QSOP;20 pin;54.2 mm²
Outline Drawing:21-0055 (PDF)
Land Pattern: 90-0168 (PDF)
Use pkgcode/variation: E20+1*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX3762EEP+T
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Active |
QSOP;20 pin;54.2 mm²
Outline Drawing:21-0055 (PDF)
Land Pattern: 90-0168 (PDF)
Use pkgcode/variation: E20+1*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX3762EEP-T
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Active |
QSOP;20 pin
Land Pattern: Not Available
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-40°C to +85°C
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See data sheet
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Notes:
- Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
- Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
- Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product Naming Conventions.
- * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.
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Notes and Comments
Chatter-free power detector, TTL LOS interface (MAX3761)
Chatter-free power detector, PECL LOS interface (MAX3762)
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Evaluation Kits
Products with Similar Part Numbers
Didn't Find What You Need?
Information Index
Document Ref.: 19-1097
Rev 4;
2008-08-27
This page last modified: 2008-08-27
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