MAX2440 Datasheet | Maxim Integrated

Description Features o Receive Mixer with 35d B Image Rejection o Adjustable-Gain LNA o Up to +2d Bm bined Receiver Input IP3 o 4d B bined Receiver Noise Figure o Low Current Consumption: 23m A Receive 9.5m A Oscillator o 0.5µA Shutdown Mode o Operates from Single +2.7V to +4.8V Supply MAX2440/MAX2441/MAX2442 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 a +2.7V to +4.8V power supply, allowing direct connection to a 3-cell battery stack. The signal path incorporates an adjustable-gain LNA and an image-reject downconverter with 35d B image suppression. These features yield excellent bined downconverter noise figure (4d B) and high linearity with an input third-order intercept point (IP3) of up to +2d Bm. 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 as an LO buffer amplifier. Three separate powerdown inputs can be used for system power management, including a 0.5µA shutdown mode. These parts are patible with monly used modulation schemes such as FSK, BPSK, and QPSK, as well as frequency hopping and direct sequence spread-spectrum systems. All devices e in 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 plete transceiver devices, refer to the MAX2420/ MAX2421/MAX2422/MAX2460/MAX2463 and MAX2424/ MAX2426 data sheets. _______________Ordering Information PART MAX2440EAI MAX2441EAI MAX2442EAI TEMP. RANGE -40°C to +85°C -40°C to +85°C -40°C to +85°C PIN-PACKAGE 28 SSOP 28 SSOP 28 SSOP Functional Diagram appears at end of...