max2140 Maxim Integrated Products, Inc., max2140 Datasheet
max2140
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max2140 Summary of contents
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... Rev 3; 10/05 General Description The MAX2140 complete receiver is designed for satellite digital audio radio services (SDARS). The device includes a fully monolithic VCO and only needs a SAW at the IF and a crystal to generate the reference frequency. To form a complete SDARS radio, the MAX2140 requires only a low-noise amplifier (LNA), which can be controlled by a baseband controller ...
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Complete SDARS Receiver ABSOLUTE MAXIMUM RATINGS V to GND..................................................... -0.3V to +4.3V CC_XX VINANT to GND.................................................... -0.3V to +5.6V AGCPWM to GND ................................................ -0.3V to +3.0V Digital Input Current ........................................................ ±10mA Maximum VSWR Without Damage ........................................ 4:1 Maximum VSWR Without ...
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... AC ELECTRICAL CHARACTERISTICS (MAX2140 EV kit, current drawn at VOUTANT 2345MHz 2076MHz -40°C to +85°C. Typical values are otherwise noted.) (Note 2) Interstage (IF) 259MHz SAW filter specification: insertion loss = 19dB max, 9.3MHz to 12MHz from center attenuation = 24dB min, beyond 12MHz from center attenuation = 40dB min. ...
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... Complete SDARS Receiver AC ELECTRICAL CHARACTERISTICS (continued) (MAX2140 EV kit, current drawn at VOUTANT 2345MHz 2076MHz -40°C to +85°C. Typical values are otherwise noted.) (Note 2) Interstage (IF) 259MHz SAW filter specification: insertion loss = 19dB max, 9.3MHz to 12MHz from center attenuation = 24dB min, beyond 12MHz from center attenuation = 40dB min ...
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... AC ELECTRICAL CHARACTERISTICS (continued) (MAX2140 EV kit, current drawn at VOUTANT 2345MHz 2076MHz -40°C to +85°C. Typical values are otherwise noted.) (Note 2) Interstage (IF) 259MHz SAW filter specification: insertion loss = 19dB max, 9.3MHz to 12MHz from center attenuation = 24dB min, beyond 12MHz from center attenuation = 40dB min. ...
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... Complete SDARS Receiver AC ELECTRICAL CHARACTERISTICS (continued) (MAX2140 EV kit, current drawn at VOUTANT 2345MHz 2076MHz -40°C to +85°C. Typical values are otherwise noted.) (Note 2) Interstage (IF) 259MHz SAW filter specification: insertion loss = 19dB max, 9.3MHz to 12MHz from center attenuation = 24dB min, beyond 12MHz from center attenuation = 40dB min ...
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A INPUT RETURN LOSS vs. FREQUENCY 0 -5 -10 -15 MAXIMUM RF AGC -20 -25 MINIMUM RF AGC -30 2.2 2.3 2.4 FREQUENCY (GHz) RF AGC SETTLING TIME WITH 20dB STEP 0dBm RF AGC ...
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... REFOUT WAVEFORM (REF = 1, RFD = 0) 200mV/div 10ns/div 8 _______________________________________________________________________________________ Typical Operating Characteristics (continued) VCO PHASE NOISE vs. OFFSET FREQUENCY -50dBc/Hz -150dBc/Hz 10 FREQUENCY OFFSET (Hz) REFOUT WAVEFORM (REF = 1, RFD = 1) MAX2140 toc11 500mV/div REFOUT WAVEFORM (REF = 0, RFD = 0) MAX2140 toc10 500mV/div 20ns/div 1M MAX2140 toc12 20ns/div ...
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... Regulated Supply Voltage for the VCO 33 VTUNE High-Impedance VCO Tuning Input 41 CA2, I CA1 I C Input Signals. Define the MAX2140 I 2 43, 44 SCL, SDA I C-Compatible Programming Input. Connect — Exposed Pad Exposed Paddle. Connect to ground. _______________________________________________________________________________________ Complete SDARS Receiver FUNCTION 2 C device address ...
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... Complete SDARS Receiver Detailed Description The front end of the MAX2140, which downconverts the RF signal to IF, is defined from the differential RF inputs (pins RFIN+ and RFIN-) to the output (pins IFOUT+ and IFOUT-) to the SAW filter. The front end includes a self-contained analog RF AGC loop. The engagement threshold of the loop can be programmed from -35dBm to -15dBm referred to the RF input in 1dB steps using the RF4– ...
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... Applications Information Serial Interface and Control Registers MAX2140 Programming Bits: The MAX2140 conforms to the Philips I 400kbps (fast mode), and operates as a slave. The MAX2140 addresses can be selected from three values, which are determined by the logic state of the 2 two address-select pins I CA1 and I the MSB is transmitted (and read) first ...
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... HPF = HPF gain increase by 4dB: HPF = 0 (off) and HPF = 1 (on) BYTE PMA_Test: PM3/PM2/PM1/PM0 = PMA gain cutback (dB): PM3/PM2/PM1/PM0 DEC SDX = shutdown reference buffer: SDX = 0 (on) and SDX = 1 (shutdown) Table 4. MAX2140 Read Programming Bits READ-FROM MODE RESET VALUE Address — Reserved 00000000 Status ...
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... See Table 5 and Table 6 for read/write register operations. Layout Issues The MAX2140 EV kit can be used as a starting point for layout. For best performance, take into consideration power-supply issues, as well as the RF, LO, and IF layout. ...