MAX3864 반도체 회로 부품 판매점
2.5Gbps / +3V to +5.5V / Wide Dynamic Range Transimpedance Preamplifier
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 Maxim Integrated |
19-1790; Rev 0; 8/00
2.5Gbps, +3V to +5.5V, Wide Dynamic Range
Transimpedance Preamplifier
General Description
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 VCC.
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.
Applications
SDH/SONET Transmission Systems
PIN Preamplifier Receivers
APD Preamplifier Receivers
2.5Gbps ATM Receivers
Regenerators for SDH/SONET
Features
o 490nA (typ) Input-Referred Noise
o 2000MHz Bandwidth
o 2mA Input Overload
o 100Ω Differential Output Impedance
o 112mW Power Dissipation at +3.3V
o Integrated Filter Resistor
o CML Outputs
o Single +3.0V to +5.5V Supply Voltage
Ordering Information
PART
TEMP. RANGE PIN-PACKAGE
MAX3864ESA
MAX3864E/D
-40°C to +85°C
-40°C to +85°C
8 SO
Dice*
* Dice are designed to operate with junction temperatures of -40°C
to +140°C but are tested and guaranteed only at TA = +25°C.
Pin Configuration
TOP VIEW
VCC 1
N.C. 2
IN 3
FILTER 4
MAX3864
8 GND
7 OUT+
6 OUT-
5 GND
SO
CFILTER
400pF
Typical Application Circuit
VCC
0.01µF
750Ω
VCC
FILTER
PHOTODIODE
OUT+
IN
0.1µF
100Ω
MAX3864
OUT-
GND
0.1µF
LIMITING
AMPLIFIER
________________________________________________________________ Maxim Integrated Products 1
For free samples and the latest literature, visit www.maxim-ic.com or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
2.5Gbps, +3V to +5.5V, Wide Dynamic Range
Transimpedance Preamplifier
ABSOLUTE MAXIMUM RATINGS
Supply Voltage (VCC - GND) .................................-0.5V to +6.0V
IN Current..............................................................-4mA to +4mA
FILTER Current......................................................-8mA to +8mA
Voltages at OUT+, OUT- .................(VCC - 1.5V) to (VCC + 0.5V)
Continuous Power Dissipation (TA = +85°C)
8-Pin SO package (derate 6.7mW/°C above +85°C) ..436mW
Storage Temperature Range .............................-55°C to +150°C
Operating Junction Temperature ......................-55°C to +150°C
Processing Temperature (die) .........................................+400°C
Lead Temperature (soldering, 10s) .................................+300°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(VCC = +3.0V to +5.5V, 100Ω load between OUT+ and OUT-, 0.1µF coupling capacitors on OUT+ and OUT-, TA = -40°C to +85°C,
unless otherwise noted. Typical values are at +3.3V, source capacitance = 0.85pF, and TA = +25°C.) (Note 1)
PARAMETER
Input Bias Voltage
Supply Current
Transimpedance
Output Impedance
Maximum Differential Output Voltage
Filter Resistor
AC Input Overload
DC Input Overload
Input-Referred RMS Noise
Input-Referred Noise Density
Small-Signal Bandwidth
Low-Frequency Cutoff
Transimpedance Linear Range
Deterministic Jitter
Power-Supply Rejection Ratio (PSRR)
CONDITIONS
Differential, measured with 40µAp-p input
Single ended (per side)
Input = 2mAp-p with 100Ω differential output
termination
Bandwidth = 2.0GHz (Note 2)
-3dB, input ≤ 20µADC
Gain at 40µAp-p is within 5% of the small-
signal gain
3.13V < VCC < 5.5V (Note 3)
3.0V ≤ VCC ≤ 3.13V (Note 3)
Output referred, f < 2MHz,
PSRR = -20log(∆VOUT/∆Vcc)
MIN
0.66
2100
48
220
600
2
1
1525
40
TYP
0.83
34
2750
50
380
750
490
11
2000
30
24
24
50
MAX
0.99
63
3400
52
UNITS
V
mA
Ω
Ω
575 mVp-p
930 Ω
mAp-p
mA
668 nA
pA/√(Hz)
MHz
kHz
µAp-p
67
ps
77
dB
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.
Note 2: Input-referred noise is calculated as (RMS output noise) / (Gain at f = 10MHz). Noise density is (Input-Referred Noise) /
(Bandwidth)1/2. No external filters are used for the noise measurements.
Note 3: Deterministic jitter is defined as the arithmetic sum of pulse-width distortion and pattern dependent jitter measured with a
repeating 20-bit pattern of 00111110101100000101 (K28.5). See Typical Operating Characteristics.
2 _______________________________________________________________________________________
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MAX3864 amplifier
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