MAX3864ESA-T Maxim Integrated, MAX3864ESA-T Datasheet

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MAX3864ESA-T

Manufacturer Part Number
MAX3864ESA-T
Description
Transimpedance Amplifiers
Manufacturer
Maxim Integrated
Datasheet
The MAX3864 is a transimpedance preamplifier for
applications in SDH/SONET systems operating up to
2.5Gbps. It features 490nA (typ) input-referred noise,
2.0GHz bandwidth, and 2mA input overload.
The MAX3864 operates from a single +3.0V to +5.5V
supply. It includes an integrated low-frequency com-
pensation capacitor, as well as a filter connection that
provides positive bias through a 750Ω resistor to V
These features save external components, simplifying
design and assembly into a TO-46 header with a photo-
diode.
The MAX3864 has a typical optical dynamic range of
-24dBm to 0dBm using a PIN photodetector.
19-1790; Rev 1; 11/05
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
SDH/SONET Transmission Systems
PIN Preamplifier Receivers
APD Preamplifier Receivers
2.5Gbps ATM Receivers
Regenerators for SDH/SONET
2.5Gbps, +3V to +5.5V, Wide Dynamic Range
________________________________________________________________ Maxim Integrated Products
C
400pF
FILTER
General Description
EVALUATION KIT
AVAILABLE
PHOTODIODE
Applications
FILTER
IN
Transimpedance Preamplifier
MAX3864
750Ω
CC
.
V
CC
GND
V
CC
♦ 490nA (typ) Input-Referred Noise
♦ 2000MHz Bandwidth
♦ 2mA Input Overload
♦ 100Ω Differential Output Impedance
♦ 112mW Power Dissipation at +3.3V
♦ Integrated Filter Resistor
♦ CML Outputs
♦ Single +3.0V to +5.5V Supply Voltage
* Dice are designed to operate with junction temperatures of -40°C
to +140°C but are tested and guaranteed only at T
MAX3864ESA
MAX3864E/D
0.01μF
OUT+
OUT-
PART
TOP VIEW
Typical Application Circuit
0.1μF
0.1μF
FILTER
N.C.
V
CC
IN
100Ω
1
2
4
3
-40°C to +85°C
-40°C to +85°C
TEMP RANGE
Ordering Information
MAX3864
SO
Pin Configuration
LIMITING
AMPLIFIER
8
7
6
5
GND
OUT+
OUT-
GND
PIN-PACKAGE
8 SO
Dice*
Features
A
= +25°C.
1

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MAX3864ESA-T Summary of contents

Page 1

... Power Dissipation at +3.3V ♦ Integrated Filter Resistor . CC ♦ CML Outputs ♦ Single +3.0V to +5.5V Supply Voltage PART Applications MAX3864ESA MAX3864E/D * Dice are designed to operate with junction temperatures of -40°C to +140°C but are tested and guaranteed only at T TOP VIEW V CC 0.01μF 750Ω ...

Page 2

... Input-Referred RMS Noise Input-Referred Noise Density Small-Signal Bandwidth Low-Frequency Cutoff Transimpedance Linear Range Deterministic Jitter Power-Supply Rejection Ratio (PSRR) Note 1: Source capacitance represents the total capacitance at the IN pin during characterization of noise and bandwidth parame- ters. Noise and bandwidth will be affected by the source capacitance. See the Typical Operating Characteristics for more information ...

Page 3

... AMBIENT TEMPERATURE (°C) _______________________________________________________________________________________ Transimpedance Preamplifier Typical Operating Characteristics FREQUENCY RESPONSE 100 1k 100 FREQUENCY (MHz) SMALL-SIGNAL TRANSIMPEDANCE vs. TEMPERATURE 1000 -40 - AMBIENT TEMPERATURE (°C) EYE DIAGRAM (INPUT = 2mA 13 ...

Page 4

... Ground Detailed Description The MAX3864 transimpedance amplifier is designed for 2.5Gbps fiber optic applications. As shown in Figure 1, the MAX3864 comprises a transimpedance amplifier, a voltage amplifier, an output buffer, an output filter, and a DC cancellation circuit. Transimpedance Amplifier The signal current at the input flows into the summing node of a high-gain amplifier ...

Page 5

... TIME OUTPUT (SMALL SIGNALS) OUTPUT (LARGE SIGNALS) Figure 3. DC Cancellation Effect on Input transimpedance amplifier’s linear range, thereby reduc- ing pulse-width distortion (PWD) on large input signals. The DC cancellation circuit is internally compensated and therefore does not require external capacitors. This circuit minimizes PWD for data sequences that exhibit a 50% duty cycle and mark density ...

Page 6

... Wide Dynamic Range Transimpedance Preamplifier POWER PI P AVG PO Figure 4. Optical Power Relations Table 1. Optical Power Relations PARAMETER SYMBOL Average Power P P AVE Extinction Ratio Optical Power Optical Power Signal Amplitude P IN ...

Page 7

... C = FILTER Ω 750 250 nA _______________________________________________________________________________________ Transimpedance Preamplifier PHOTODIODE IS MOUNTED FILT CASE IS GROUND. Figure 6. Equivalent Input Circuit For high current density and reliable operation, the MAX3864 uses gold metalization. Connections to the die should be made with gold wire only, using ball- bonding ...

Page 8

... Wide Dynamic Range Transimpedance Preamplifier Figure 7. Equivalent Output Circuit 8 _______________________________________________________________________________________ V CC 50Ω 50Ω GND OUT+ OUT- ...

Page 9

... Wide Dynamic Range Chip Topography OUT+ GND V INPUT FILTER CC 30mils (0.762mm) _______________________________________________________________________________________ Transimpedance Preamplifier TRANSISTOR COUNT: 320 PROCESS: BIPOLAR (SILICON GERMANIUM) OUT- 50mils GND 1.27mm Chip Information 9 ...

Page 10

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 10 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2005 Maxim Integrated Products H ...

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