MAX3793 Datasheet, PDF (1/11 Pages) Maxim Integrated Products – 1Gbps to 4.25Gbps Multirate Transimpedance Amplifier with Photocurrent Monitor

19-3467; Rev 0; 10/04
1Gbps to 4.25Gbps Multirate Transimpedance
Amplifier with Photocurrent Monitor
General Description
The MAX3793 transimpedance amplifier provides a
compact low-power solution for applications from
1Gbps up to 4.25Gbps.
The MAX3793 features 195nA input-referred noise,
3.5kΩ transimpedance gain, 2.9GHz bandwidth (C_IN =
0.3pF) and 2.8mA_P-P input overload. Operating from a
+3.3V supply, the MAX3793 consumes only 106mW. An
integrated filter resistor provides positive bias for the
photodiode. These features, combined with a small die
size, allow easy assembly into a TO-46 header with a
photodiode. The MAX3793 also includes an average
photocurrent monitor.
The MAX3793 has a typical optical sensitivity of -20dBm
(0.55A/W) at 4.25Gbps. Typical optical overload is
at 4dBm. The MAX3793 and the MAX3794 limiting
amplifiers provide a complete solution for multirate
receiver applications.
Features
♦ 4.7ps_P-P Deterministic Jitter (DJ)
♦ 195nA_RMS Input-Referred Noise
♦ 2.9GHz Small-Signal Bandwidth
♦ 2.8mA_P-P AC Overload
♦ Photocurrent Output Monitor
♦ 3.5kΩ Differential Gain
♦ Compact Die Size (30 mils x 50 mils)
Applications
SFF/SFP Transceiver Modules from 1Gbps to
4.25Gbps
Gigabit Ethernet Optical Receivers
Multirate Fibre-Channel Optical Receivers
Ordering Information
PART
TEMP RANGE PIN-PACKAGE
MAX3793E/D
-40°C to +85°C Dice*
*Dice are designed to operate from -40°C to +85°C ambient
temperature, but are tested and guaranteed only at T_A = +25°C.
C_VCC
C_FILT
V_CC
FILT OUT+
MAX3793
IN
OUT-
MON
GND
SFP OPTICAL RECEIVER
0.1µF
V_CC
IN+
Typical Application Circuit
HOST
BOARD
RATE_SELECT
BWSEL
0.1µF
OUT+
0.1µF
IN-
MAX3794*
DISABLE
LOS
0.1µF
OUT-
V_CC
4.7kΩ
TO
10kΩ
*FUTURE PRODUCT
R_MON
DS1856/
DS1859
MOD-DEF1
MOD-DEF2
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
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