Details, datasheet, quote on part number: MAX2442EAI
CategoryCommunication => Wireless
Description900mhz Image-reject Receivers
CompanyMaxim Integrated Products
DatasheetDownload MAX2442EAI datasheet
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Features, Applications

o Receive Mixer with 35dB Image Rejection o Adjustable-Gain LNA to +2dBm Combined Receiver Input o 4dB Combined Receiver Noise Figure o Low Current Consumption: 23mA Receive 9.5mA Oscillator o 0.5A Shutdown Mode o Operates from Single to +4.8V Supply

The MAX2440/MAX2441/MAX2442 highly integrated front-end receiver ICs provide the lowest cost solution for cordless phones and ISM-band radios operating in the 900MHz band. All devices incorporate receive imagereject mixers to reduce filter cost. They operate with to +4.8V power supply, allowing direct connection a 3-cell battery stack. The signal path incorporates an adjustable-gain LNA and an image-reject downconverter with 35dB image suppression. These features yield excellent combined downconverter noise figure (4dB) and high linearity with an input third-order intercept point to +2dBm. All devices include an on-chip local oscillator (LO), requiring only an external varactor-tuned LC tank for operation. The integrated divide-by-64/65 dual-modulus prescaler can also be set to a direct mode, in which it acts an LO buffer amplifier. Three separate powerdown inputs can be used for system power management, including a 0.5A shutdown mode. These parts are compatible with commonly used modulation schemes such as FSK, BPSK, and QPSK, as well as frequency hopping and direct sequence spread-spectrum systems. All devices come a 28-pin SSOP package. Evaluation kits are available for the MAX2420/ MAX2421/MAX2422. The MAX2420/MAX2421/MAX2422 are transceivers whose receive sections and pinout are identical to the MAX2440/MAX2441/MAX2442. For complete transceiver devices, refer to the MAX2420/ MAX2421/MAX2422/MAX2460/MAX2463 and MAX2424/ MAX2426 data sheets.

Cordless Phones Wireless Telemetry Wireless Networks Spread-Spectrum Communications Two-Way Paging

PART MAX2442 IF FREQ (MHz) 46 70 INJECTION TYPE High side High side High side LO FREQ (MHz) fRF + 10.7 fRF + 46 fRF + 70

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! 1-888-629-4642, or visit Maxim's website at

VCC to +5.5V Voltage on LNAGAIN, RXON, VCOON, MOD.............................................-0.3V to (VCC + 0.3V) RXIN Input Power..............................................................10dBm TANK, TANK Input Power...................................................2dBm Continuous Power Dissipation (TA = +70C) SSOP (derate 9.50mW/C above +70C)....................762mW Operating Temperature Range to +85C Junction Temperature......................................................+150C Storage Temperature to +165C 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.

(VCC no RF signals applied, LNAGAIN = unconnected, VVCOON = 2.4V, VRXON = VMOD = 0.45V, PREGND = GND, TA = TMIN to TMAX. Typical values are = +25C, VCC = +3.3V, unless otherwise noted.) (Note 1) PARAMETER Supply-Voltage Range Oscillator Supply Current Prescaler Supply Current (divide-by-64/65 mode) Prescaler Supply Current (buffer mode) Receive Supply Current Shutdown Supply Current Digital Input Voltage High Digital Input Voltage Low Digital Input Current Note 1: Note 2: Note 3: Note 4: PREGND = unconnected (Note = 2.4V (Note 3) VRXON = 2.4V, PREGND = unconnected (Note 4) VCOON = RXON = MOD DIV1 = GND RXON, DIV1, VCOON, MOD RXON, DIV1, VCOON, MOD Voltage on any one digital input = VCC or GND TA = TMIN to TMAX 0.45 10 CONDITIONS MIN TYP MAX UNITS V A

25C guaranteed by production test, <25C guaranteed through correlation to worst-case temperature testing. Calculated by measuring the combined oscillator and prescaler supply current and subtracting the oscillator supply current. Calculated by measuring the combined oscillator and LO buffer supply current and subtracting the oscillator supply current. Calculated by measuring the combined receive and oscillator supply current and subtracting the oscillator supply current. With LNAGAIN = GND, the supply current drops by 4.5mA.

(MAX242X/MAX246X EV kit, VCC = +3.3V; fLO 925.7MHz (MAX2440), fLO 961MHz (MAX2441), fLO 985MHz (MAX2442), fRXIN = 915MHz; PRXIN = -35dBm; VLNAGAIN = 2V; VVCOON = VRXON = 2.4V; RXON = MOD DIV1 = PREGND = GND; = +25C, unless otherwise noted.) PARAMETER RECEIVER Input Frequency Range (Notes MAX2440 IF Frequency Range Image Frequency Rejection LNAGAIN = VCC, = +25C Conversion Power Gain (Note 7) LNAGAIN = VCC, TA = TMIN to TMAX (Note 5) VLNAGAIN = 1V LNAGAIN = GND Noise Figure Input Third-Order Intercept Input 1dB Compression LO to RXIN Leakage Receiver Turn-On Time DIV1 = VCC (Notes 5, 7) (Notes 5, 8) LNAGAIN = VCC VLNAGAIN = 1V Receiver on or off (Note 9) LNAGAIN = VCC VLNAGAIN = 1V LNAGAIN = VCC VLNAGAIN MAX2440/MAX2441 MAX2442 (Notes MAX2442 dB dBm ns dB MHz CONDITIONS MIN TYP MAX UNITS


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