MAX3654 19-3745 Rev 0 7/05 47MHz to 870MHz Analog CATV Transimpedance Amplifier General Description Features The MAX3654 analog transimpedance amplifier (TIA) is 47MHz to 870MHz Operation designed for CATV applications in fiber-to-the-home -6dBm to +2dBm Optical Input Range (FTTH) networks. This high-linearity amplifier is intended for 47MHz to 870MHz subcarrier multiplexed (SCM) sig- 21dBm OIP3, 47dBm OIP2 nals in passive optical networks (PON). A gain-control 5.5pA/Hz EIN (Amplifier Alone) input supports AGC operation with optical inputs hav- ing -6dBm to +2dBm average power. With 62dB max- 62dB Gain at 47MHz imum gain at 47MHz and 18dB gain control range, the 18dB Transimpedance (Gain) Control minimum RF output level is 14dBmV/channel at -6dBm optical input. A compact 4mm x 4mm package Integrated +4dB Gain Tilt (with Typical Photodiode) includes all of the active RF circuitry required to convert +5V Single-Supply Operation analog PIN photocurrent to a 75 CATV output. This 700mW SiGe RF IC provides a low-cost, low-power 700mW Power Dissipation integrated analog CATV receiver solution for FTTH ONTs. -40C to +85C Operating Temperature Range 4mm x 4mm TQFN Package Applications Ordering Information FTTH Optical Network Termination (ONT) PIN- PART TEMP RANGE PKG-CODE PACKAGE MAX3654ETE+ -40C to +85C 16 TQFN- E P * T1644F-4-A + Denotes lead-free package. *EP = Exposed pad. Pin Configuration appears at end of data sheet. Typical Application Circuit +5V TO +12V FERRITE BEAD 10H +5V 1k 0.001F MAX3654 0.001F FTTH VIDEO TIA OUT+ 1:1 IN+ -6 TO TIA DRIVE +2dBm 0.001F IN- OUT- 75 0.001F VAGC HYST MUTE 1k 100k +5V R HYST + OPAMP - FERRITE BEAD 10H Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com.47MHz to 870MHz Analog CATV Transimpedance Amplifier ABSOLUTE MAXIMUM RATINGS Supply Voltage, VCC.............................................-0.3V to +6.0V Continuous Power Dissipation, 16-Lead TQFN-EP Package IN+, IN-, VAGC, OUT+, OUT-, MUTE, HYST.........-0.3V to +5.5V (T = +70C) (derate 16.9mW/C above +70C)....1349.1mW A TEST1, TEST2........................................................-0.3V to +5.5V Operating Temperature Range ...........................-40C to +85C Output Current (OUT+, OUT-) ............................................56mA Storage Temperature Range .............................-55C to +150C Lead Temperature (soldering,10s) ..................................+300C 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. DC ELECTRICAL CHARACTERISTICS (V = +4.75V to +5.25V, typical values at V = +5.0V, T = +25C, unless otherwise noted.) (Note 1) CC CC A PARAMETER SYMB O L CONDITIONS MIN TYP MAX UNITS Supply Current I 136 170 mA CC Gain Control Input Current V = 1.4V 50 200 A AGC Mute Input High V 2.0 V IH Mute Input Low V 0.8 V IL Mute Input Current I , I 30 A IL IH AC ELECTRICAL CHARACTERISTICS (V = +4.75V to +5.25V, output ZL = 75 , typical values at V = +5.0V, T = +25C, unless otherwise noted.) CC CC A PARAMETER SYMB O L CONDITIONS MIN TYP MAX UNITS Operating Frequency Range f 47 870 MHz Frequency Response Flatness 47MHz to 870MHz (Notes 2, 6) 0.3 0.75 dB V 0.175V 60.5 62 63.5 AGC Transimpedance, Differential (Z ) 47MHz V = 0.500V 51.5 53 54.5 dB T AGC V = 1.400V 42 43.5 45 AGC Gain Control Stability V = 0 to 1.4V, R = open (Note 3) 0.75 1.6 dB AGC HYST Linear, 870MHz compared to 47MHz Gain Tilt 34 5.5 dB (Notes 4, 6) Output Second-Order Intercept OIP2 (Note 5) >47 dBm Output Third-Order Intercept OIP3 (Notes 4, 5) 18 21 dBm Equivalent Input Noise Including EIN V 0.175V (Notes 4, 6) 8 pA/Hz AGC Photodiode R = open 0.13 HYST Gain Hysteresis, Optical dB R = GND 0.65 HYST Differential Output Level, Mute MUTE 0.8V, 50MHz -58 -45 dBc RF Output Return Loss -S22 47MHz to 870MHz 13 dB Note 1: DC parameters are tested at +25C, and guaranteed by design and characterization at -40C and +85C. Note 2: Maximum difference between frequency response at any point and a straight line connecting frequency response at end points. Note 3: Gain control stability is the maximum variation in transimpedance (over process, voltage, and temperature) for any V AGC control voltage. Note 4: AC parameters guaranteed by design and characterization. Note 5: OIP2 and OIP3 measured using two tones at f1 = 800MHz and f2 = 850MHz, P = -16dBm, V = 1.4V. AGC OUT Note 6: Includes the effects of a packaged photodiode having the characteristics shown in Figure 2. 2 MAX3654