EVALUATION KIT AVAILABLE MAX9947 AISG Integrated Transceiver General Description Benefits and Features The MAX9947 is an AISG-compliant, fully integrated Receiver Wide Input Dynamic Range transceiver. -15dBm to +5dBm in 50 The MAX9947 receiver offers a typical dynamic range of Variable Transmitter Output Level from +7dBm to 20dB and integrates a bandpass filter that operates in the +12dBm 2.176MHz frequency with a narrow 200kHz bandwidth. AISG-Compliant Output Emission Profile The MAX9947 transmitter integrates a bandpass filter that AutoDirection Output is compliant with the AISG spectrum emission profile. It No Need of Microcontrollers to Handle Bus can modulate OOK signals up to 115.2kbps. The output Arbitration in Tower-Mounted Equipment power can be varied with external resistors from +7dBm Supports All AISG Data Rates to +12dBm to compensate for loss in the external circuitry and cabling. 9.6kbps 38.4kbps The MAX9947 also features a direction output to facilitate 115.2kbps the RS-485 bus arbitration in tower-mounted equipment. Bandpass Filter Compliant with AISG Protocol The MAX9947 is available in a small, 3mm x 3mm 16-pin Centered Around 2.176MHz TQFN and is rated for operation in the -40C to +105C 3.0V to 5.5V Voltage Supply temperature range. Independent Logic Supply Applications Small, 3mm x 3mm 16-Pin TQFN Package Base Stations Tower Equipment Ordering Information TEMP TOP PART PIN-PACKAGE RANGE MARK -40C to MAX9947ETE+ 16 TQFN-EP* AHF +105C +Denotes a lead(Pb)-free/RoHS-compliant package. *EP = Exposed pad. Connect EP to GND to enhance thermal dissipation. Functional Diagram RES BIAS V L 1.5V V CC +7dBm TO +12dBm XTAL1 TXOUT ANALOG SWITCH XTAL2 BANDPASS FILTER TXIN DIRMD1 SYNCOUT DIRMD2 MAX9947 DIRECTION REF DIR DETECTION STATE MACHINE -15dBm RXOUT RXIN OOK DEMODULATOR BANDPASS FILTER GND 19-5029 Rev 4 4/16MAX9947 AISG Integrated Transceiver Absolute Maximum Ratings V to GND ............................................................-0.3V to +6V All Other Pins Max In/Out Current.................................... 20mA CC V to GND ...............................................................-0.3V to +6V Continuous Power Dissipation (T = +70C) L A TXOUT, BIAS to GND .............................. -0.3V to (V + 0.3V) 16-Pin TQFN (derate 17.5mW/C) ............................1399mW CC RXIN, XTAL1, XTAL2, SYNCOUT, RES to GND ....-0.3V to +6V Operating Temperature Range ......................... -40C to +105C TXIN, RXOUT, DIR, DIRMD1, Junction Temperature ......................................................+150C DIRMD2 to GND ......................................-0.3V to (V + 0.3V) Storage Temperature Range ............................ -65C to +150C L Output Short-Circuit Current TXOUT, Lead Temperature (soldering, 10s) .................................+300C SYNCOUT to V or GND ....................................Continuous Soldering Temperature (reflow) .......................................+260C CC 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. Package Thermal Characteristics (Note 1) TQFN Junction-to-Ambient Thermal Resistance ( )........57.2C/W JA Junction-to-Case Thermal Resistance ( )................40C/W JC Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial. Electrical Characteristics (V = 5V, V = 3.3V, TXOUT connected with 50 to RXIN, 4.1k resistor between BIAS and RES, 10k resistor between RES and CC L GND, 1k resistor between SYNCOUT and V , T = T to T , unless otherwise specified. XTAL frequency 8.704MHz 30ppm. CC A MIN MAX Typical values are at T = +25C.) (Note 2) A PARAMETER SYMBOL CONDITION MIN TYP MAX UNITS DC CHARACTERISTICS Supply Voltage V Guaranteed by PSRR 3.0 5.5 V CC T 85C 23 35 A Supply Current I mA CC T > 85C 27 40 A Logic Supply Voltage V Guaranteed by logic supply current 1.6 5.5 V L Logic Supply Current I V = 3.3V 138 380 A L TXIN Receiver Power-Supply 3.0V V 5.5V, V = 3.3V CC TXIN PSRR 49 60 dB Rejection Ratio (Note 3) Output Power-Supply 3.0V V 5.5V, V = 0V CC TXIN 49 60 dB Rejection Ratio (Note 4) LOGIC INPUTS AND OUTPUTS Logic-Input High Threshold V DIRMD1, DIRMD2, TXIN 0.7 x V V IH L Voltage Logic-Input Low Threshold V DIRMD1, DIRMD2, TXIN 0.3 x V V IL L Voltage Logic-Output High Threshold V RXOUT, DIR source 3.3mA 0.9 x V V OH L Voltage Logic-Output Low Threshold V RXOUT, DIR sink 3.3mA 0.1 x V V OL L Voltage TXIN shorted to GND or V 1 L Input Leakage Current I , I Shorted to GND -1 A IH IL DIRMD1, DIRMD2 Shorted to V +60 L SYNC INPUT (XTAL1) AND OUTPUT (SYNCOUT) 0.7 x Input High Threshold Voltage V V XTAL1 IH V CC Maxim Integrated 2 www.maximintegrated.com