19-0324; Rev 2; 12/97
1Gbps, High-Speed Limiting Amplifier with
Chatter-Free Loss-of-Signal Detection
____________________________Features
o 900MHz Bandwidth
The MAX3262 has complementary loss-of-signal outputs for interfacing with open-fiber-control (OFC) circuitry. These outputs can be programmed to assert
with input levels between 9mVp-p and 48mVp-p. LOS
hysteresis for any programmed level is nominally
3.0dB, preserving a balance between noise immunity
and dynamic range.
o Single +5V Power Supply
o 48dB Maximum Gain
o Chatter-Free LOS
o Programmable LOS Threshold
o Fully Differential Architecture
_______________Ordering Information
PART
0°C to +70°C (TA)
24 SSOP
MAX3262C/D
1062Mbps Fibre Channel
TEMP. RANGE
MAX3262CAG
________________________Applications
PIN-PACKAGE
0°C to +100°C (TJ)
Dice*
*Dice are designed to operate over this range but are tested and
guaranteed only at TA = +25°C.
622Mbps SONET
Pin Configuration appears at end of data sheet.
____________________________________________________Typical Operating Circuit
CAZ
CZP
CZN
FILTER
DIN+
CIN
DOUT+
INPUT
(50Ω TO VCC - 2V)
OUTPUT
DIN-
VCC
RECEIVER WITH
PECL TERMINATIONS
DOUT-
MAX3260
MAX3262
CIN
GND
ENB
LOS
VCC
LOSB
50Ω
+5V
+5V
GND
DIV2
VLOS
C1
0.01µF
VCCA
VCCB
VCCC
VCCD
VCCE
+5V
R
4.7k
R
4.7k
LOS
LOSB
+5V
C1
0.01µF
+5V
R1
R2
________________________________________________________________ Maxim Integrated Products
1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 408-737-7600 ext. 3468.
MAX3262
________________General Description
The MAX3262 limiting amplifier with its high gain and
wide bandwidth is ideal for use as a post amplifier in
fiber-optic receivers with data rates up to 1Gbps. The
amplifier’s gain can be adjusted between 33dB and
48dB. At maximum gain, signals as small as 6mVp-p
can be amplified to drive devices with PECL inputs.
