MAX3654 Datasheet, PDF (1/8 Pages) Maxim Integrated Products – 47MHz to 870MHz Analog CATV Transimpedance Amplifier

19-3745; Rev 0; 7/05
47MHz to 870MHz Analog CATV
Transimpedance Amplifier
General Description
The MAX3654 analog transimpedance amplifier (TIA) is
designed for CATV applications in fiber-to-the-home
(FTTH) networks. This high-linearity amplifier is intended
for 47MHz to 870MHz subcarrier multiplexed (SCM) sig-
nals in passive optical networks (PON). A gain-control
input supports AGC operation with optical inputs hav-
ing -6dBm to +2dBm average power. With 62dBΩ max-
imum gain at 47MHz and 18dB gain control range, the
minimum RF output level is 14dBmV/channel at -6dBm
optical input. A compact 4mm x 4mm package
includes all of the active RF circuitry required to convert
analog PIN photocurrent to a 75Ω CATV output.
This 700mW SiGe RF IC provides a low-cost, low-power
integrated analog CATV receiver solution for FTTH ONTs.
Applications
FTTH Optical Network Termination (ONT)
Pin Configuration appears at end of data sheet.
Features
♦ 47MHz to 870MHz Operation
♦ -6dBm to +2dBm Optical Input Range
♦ 21dBm OIP3, 47dBm OIP2
♦ 5.5pA/√Hz EIN (Amplifier Alone)
♦ 62dB Gain at 47MHz
♦ 18dB Transimpedance (Gain) Control
♦ Integrated +4dB Gain Tilt (with Typical Photodiode)
♦ +5V Single-Supply Operation
♦ 700mW Power Dissipation
♦ -40°C to +85°C Operating Temperature Range
♦ 4mm x 4mm TQFN Package
Ordering Information
PART
TEMP RANGE
PIN-
PACKAGE
PKG-CODE
MAX3654ETE+ -40°C to +85°C 16 TQFN-EP* T1644F-4-A
+ Denotes lead-free package.
*EP = Exposed pad.
+5V TO
+12V
10µH
FERRITE BEAD
1kΩ
-6 TO
+2dBm
1kΩ
FERRITE BEAD
Typical Application Circuit
+5V
0.001µF
MAX3654
FTTH VIDEO TIA
IN+
0.001µF
OUT+
1:1
0.001µF
TIA
DRIVE
IN-
OUT-
75Ω
VAGC
HYST MUTE ^0.001µF
100kΩ
+5V
+
OPAMP
-
R_HYST
10µH
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