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MAX3660ETE+T

P1-P3P4-P6P7-P9
General Description
The MAX3660 high-linearity analog RF transimpedance
amplifier (TIA) is intended for passive optical network
(PON) video receiver applications. With 66dBΩ maxi-
mum variable gain and integrated uptilt, the MAX3660
provides 23dBmV/channel ±1dB at 870MHz
(19dBmV/channel at 47MHz) for optical inputs between
+2dBm to -8dBm (at 4.2% OMI) using simple feed-for-
ward automatic gain control (AGC). It can also be config-
ured with feedback AGC for even greater dynamic
range. CNR is better than 48dB from 47MHz to 870MHz
(1.0A/W photodiode and -165dB/Hz RIN) at -8dBm with
4.2% OMI, or -6dBm with 3.3% OMI. CSO and CTB are
better than -61dBc and -65dBc, respectively. The device
supports extended frequency operation to > 1000MHz.
The very low true-TIA input impedance accommodates
a variety of photodiodes, eliminating the need for an
input matching network and improving yield.
Applications
FTTH Optical Network Termination (ONT)
Features
♦ Pin Compatible with MAX3654
♦ Operates to > 1000MHz
♦ 23dBmV/ch Output at 870MHz
♦ 4.5pA/Hz
1/2
Amplifier EIN without Photodiode
♦ 58dBm OIP2
♦ 24dBm OIP3
♦ No Input Matching Required
♦ Single +5V Supply
♦ 650mW Dissipation
♦ -40°C to +85°C Operating Temperature Range
MAX3660
Analog CATV Transimpedance Amplifier
________________________________________________________________
Maxim Integrated Products
1
15
16
14
13
6
5
7
IN+
V
CC
*THE EXPOSED PAD MUST BE CONNECTED TO GROUND.
8
V
CC
OUT+
V
CC
V
CC
12
GND
4
12 11 9
GND
GND
GND
EP*
HYST
MUTE
VAGC
MAX3660
IN- OUT-
3
10
TEST
THIN QFN-EP
(4mm
×
4mm)
TOP VIEW
+
Pin Configuration
Ordering Information
19-4223; Rev 0; 7/08
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
+
Denotes a lead-free/RoHS-compliant package.
*
EP = Exposed pad.
EVALUATION KIT
AVAILABLE
Typical Application Circuit appears at end of data sheet.
PART TEMP RANGE PIN-PACKAGE
MAX3660ETE+ -40°C to +85°C 16 TQFN-EP*
MAX3660
Analog CATV Transimpedance Amplifier
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
DC ELECTRICAL CHARACTERISTICS
(V
CC
= +4.75V to +5.25V, T
A
= -40°C to +85°C. Typical values are at V
CC
= +5V, T
A
= +25°C, unless otherwise noted.) (Note 1)
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.
Supply Voltage Range, V
CC........................................
-0.3V to +5.5V
IN+, IN-, VAGC, MUTE,
HYST, TEST..................................(V
EE
- 0.4V) to (V
CC
+ 0.4V)
Output Current (OUT+, OUT-) ............................................60mA
Maximum Voltage (OUT+, OUT-) ............................(V
CC
+ 0.4V)
Continuous Power Dissipation (T
A
= +70°C)
16-Pin TQFN-EP (derate 16.9mW/°C above +70°C)..1349mW
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range .............................-55°C to +175°C
Lead Temperature (soldering, 10s) .................................+300°C
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Supply Current I
CC
130 180 mA
Gain Control Input Current I
VAGC
V
VAGC
= 1.4V -15 -200 μA
MUTE Input High V
IH
2.0 V
MUTE Input Low V
IL
0.5 V
MUTE Input Current I
IL
, I
IH
V
MUTE
= 0.5V, 2.0V ±30 μA
AC ELECTRICAL CHARACTERISTICS
(V
CC
= +4.75V to +5.25V, T
A
= -40°C to +85°C, output Z
L
= 75Ω, unless otherwise noted. Typical values are at V
CC
= +5V, T
A
=
+25°C, unless otherwise noted.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
47MHz to 870MHz ±0.9
Frequency Response Flatness
(Notes 2, 3, 4)
47MHz to 1000MHz ±1.0
dB
47MHz, V
VAGC
= 0V 66
47MHz, V
VAGC
= 0.175V (Note 2) 63.5 66 67.5
47MHz, V
VAGC
= 0.5V (Note 2) 54 56.5 58
47MHz, V
VAGC
= 1.4V (Note 2) 45.5 48 49.5
Transimpedance, Differential ZT
47MHz, V
VAGC
= 1.6V 46.5
dB
Gain Tilt Linear, 870MHz vs. 47MHz (Note 4) 3.8 4.5 5.0 dB
Gain Control Stability
0.175V V
VAGC
1.4V, R
HYST
= open
(Notes 2, 5)
±0.8 ±2.0 dB
Output Second-Order Intercept OIP2
47MHz to 870MHz, 0.175V V
VAGC
1.4V
(Note 6)
58 dBm
Output Third-Order Intercept OIP3
47MHz to 870MHz, 0.175V V
VAGC
1.4V
(Note 6)
20 24 dBm
MAX3660
Analog CATV Transimpedance Amplifier
_______________________________________________________________________________________ 3
Note 1: DC parameters are tested at T
A
= +25°C and +85°C.
Note 2: Guaranteed by design and characterization.
Note 3: Frequency response flatness is the maximum difference between the frequency response at any point and a line connect-
ing the end points of 47MHz and 870MHz.
Note 4: Measured using the MAX3660 EV kit circuit in Figure 4 with an Excelight SXT5241-Q/GPA triplexer (8mm photodiode lead
length).
Note 5: Gain control stability is the maximum variation in transimpedance (over process, voltage, and temperature) for any valid
VAGC voltage.
Note 6: OIP2 and OIP3 values are tested with tones at 800MHz and 850MHz.
Note 7: Hysteresis is referred to optical gain, equivalent to two times electrical gain (dB).
Note 8: Not including balun.
AC ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= +4.75V to +5.25V, T
A
= -40°C to +85°C, output Z
L
= 75Ω, unless otherwise noted. Typical values are at V
CC
= +5V, T
A
=
+25°C, unless otherwise noted.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Equivalent Input Noise,
Including Photodiode
EIN
47MHz to 870MHz, 0.175V V
VAGC
1.4V
(Notes 2, 4)
5.5 7.3 pA/Hz
1/2
R
HYST
= open ±0.14
Gain Control Hysteresis
(Notes 1, 7)
R
HYST
= GND ±0.75
dB
(optical)
Transimpedance, Mute V
MUTE
0.8V, 47MHz 20 dB
RF Output Return Loss -S22 47MHz to 870MHz (Notes 4, 8) 20 dB
0.5pF
0.5pF
0.5pF
5Ω
TO TIA
5Ω
1nH
1nH
5nH
5nH
0.3pF
0.3pF
OUT+/-
IN+/-
MUTE
48dBΩ
TO 54dBΩ
54dBΩ
TO 60dBΩ
60dBΩ
TO 66dBΩ
VAGCHYST
TIA
MAX3660
V
CC
Figure 1. Photodiode and Header Model Figure 2. Functional Diagram
P1-P3P4-P6P7-P9

MAX3660ETE+T

Mfr. #:
Buy MAX3660ETE+T
Manufacturer:
Maxim Integrated
Description:
Transimpedance Amplifiers Analog CATV Transimpedance Amp
Lifecycle:
New from this manufacturer.
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