MAX3657 Datasheet, PDF (1/15 Pages) Maxim Integrated Products – 155Mbps Low-Noise Transimpedance Amplifier

19-2834; Rev 2; 2/04
155Mbps Low-Noise Transimpedance
Amplifier
General Description
The MAX3657 is a transimpedance preamplifier for
receivers operating up to 155Mbps. The low noise, high
gain, and low-power dissipation make it ideal for Class-B
and Class-C passive optical networks (PONs).
The circuit features 14nA input-referred noise, 130MHz
bandwidth, and 2mA input overload. Low jitter is
achieved without external compensation capacitors.
Operating from a +3.3V supply, the MAX3657 con-
sumes only 76mW power. An integrated filter resistor
provides positive bias for the photodiode. These fea-
tures, combined with a small die size, allow easy
assembly into a TO-46 header with a photodiode. The
MAX3657 includes an average photocurrent monitor.
The MAX3657 has a typical optical sensitivity of -38dBm
(0.9A/W), which exceeds the Class-C PON require-
ments. Typical overload is 0dBm. The MAX3657 is avail-
able in die form with both output polarities (MAX3657E/D
and MAX3657BE/D.) The MAX3657 is also available in a
12-pin, 3mm x 3mm thin QFN package.
Applications
Optical Receivers (Up to 155Mbps Operation)
Passive Optical Networks (PONs)
SFP/SFF Transceivers
BiDi Transceivers
3.3V _CVCC1
Features
♦ 14nA_RMS Input-Referred Noise
♦ 54kΩ Transimpedance Gain
♦ 130MHz (typ) Bandwidth
♦ 2mA_P-P Input Current—0dBm Overload Capability
♦ 76mW (typ) Power Dissipation
♦ 3.3V Single-Supply Operation
♦ Average Photocurrent Monitor
Ordering Information
PART
TEMP RANGE PIN-PACKAGE
MAX3657ETC
-40°C to +85°C 12 Thin QFN
MAX3657E/D
-40°C to +85°C Die*
MAX3657BE/D
-40°C to +85°C Die*
*Dice are designed to operate over a -40°C to +110°C junction
temperature (T_J) range, but are tested and guaranteed at T_A =
+25°C.
Pin Configuration appears at end of data sheet.
Typical Application Circuit
CVCC2
VCCZ
VCC
RFILT
FILT
CFILT
IN
OUT+
OUT-
MAX3657
GND
MON
1µF
COUT
1µF
MAX3964
RLOAD
200Ω _{LIMITING AMPLIFIER}
TO-46 HEADER
*OPTIONAL COMPONENT
RMON*
________________________________________________________________ Maxim Integrated Products 1
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