MAXIM Manuals

The MAX2837 is a direct-conversion zero-IF RF transceiver designed specifically for 2.3GHz to 2.7GHz wireless broadband systems. It integrates all circuitry required to implement the RF transceiver function, including RF-to-baseband receive path, baseband-to-RF transmit path, VCO, frequency synthesizer, crystal oscillator, and baseband/control interface. The device also includes circuits for on-chip DC offset cancellation, I/Q error, and carrier-leakage detection. Only a few external components are needed to form a complete wireless broadband RF radio solution, including an RF bandpass filter (BPF), crystal, RF switch, PA, and passive components. The MAX2837 eliminates the need for an external SAW filter by implementing on-chip monolithic filters for both the receiver and transmitter. The baseband filters and Rx/Tx signal paths are optimized to meet stringent noise figure and linearity specifications. The device supports up to 2048 FFT OFDM and implements programmable channel filters for RF channel bandwidths ranging from 1.75MHz to 28MHz. The transceiver has a fast 2µs Tx-Rx switching time, including frequency transient settling. It is available in a small 48-pin thin QFN package measuring only 6mm x 6mm x 0.8mm.

The MAX7031 crystal-based, fractional-N transceiver is designed to transmit and receive FSK data at factory-preset carrier frequencies of 308MHz†, 315MHz, or 433.92MHz with data rates up to 33kbps (Manchester encoded) or 66kbps (NRZ encoded). This device generates a typical output power of +10dBm into a 50Ω load, and exhibits typical sensitivity of -110dBm. The MAX7031 features separate transmit and receive pins (PAOUT and LNAIN) and provides an internal RF switch that can be used to connect the transmit and receive pins to a common antenna. The MAX7031 transmit frequency is generated by a 16-bit, fractional-N, phase-locked loop (PLL), while the receiver's local oscillator (LO) is generated by an integer-N PLL. This hybrid architecture eliminates the need for separate transmit and receive crystal reference oscillators because the fractional-N PLL is preset to be 10.7MHz above the receive LO. Retaining the fixed-N PLL for the receiver avoids the higher current-drain requirements of a fractional-N PLL and keeps the receiver current drain as low as possible. The fractional-N architecture of the MAX7031 transmit PLL allows the transmit FSK signal to be preset for exact frequency deviations, and completely eliminates the problems associated with oscillator-pulling FSK signal generation. All frequency-generation components are integrated on-chip, and only a crystal, a 10.7MHz IF filter, and a few discrete components are required to implement a complete a

MAX7030 is a radio frequency transceiver manufactured by Texas Instruments. It has a 16-bit fractional N phase-locked loop (PLL), works at 315MHz, 345MHz or 433.92MHz, supports ASK/OOK modulation with bandwidth up to 33kbps (Manchester encoded) or 66kbps (NRZ encoded). The device has a typical output power of +10dBm into a 50Ω load and exhibits a typical sensitivity of -114dBm. MAX7030 has separate transmit and receive pins (PAOUT and LNAIN) and provides an internal RF switch that can be used to connect the transmit and receive pins to a common antenna. MAX7030 transmit frequency is generated by a 16-bit fractional-N PLL, while the receiver's local oscillator (LO) is generated by an integer-N PLL. This hybrid architecture eliminates the need for separate transmit and receive crystal reference oscillators because the fractional-N PLL is preset to be 10.7MHz above the receive LO. Retaining the fixed-N PLL for the receiver avoids the higher current-drain requirements of a fractional-N PLL and keeps the receiver current drain as low as possible. MAX7030 is available in a small, 5mm x 5mm, 32-pin thin QFN package, and is specified to operate over the automotive -40°C to +125°C temperature range.

The MAX7032 is a crystal-based, fractional-N transceiver that is designed to transmit and receive ASK/OOK or FSK data in the 300MHz to 450MHz frequency range with data rates up to 33kbps (Manchester encoded) or 66kbps (NRZ encoded).

The MAX2335 is a 450MHz RF front-end receiver IC designed for CDMA and OFDM applications. It includes a low-noise amplifier (LNA) with adjustable IIP3 to minimize desensitization due to cross-modulation in the presence of a large interfering signal. The mixer features differential IF outputs and is designed for high linearity and low noise, which is well suited for CDMA and OFDM applications. An on-chip frequency divider is included to allow the use of a standard 1GHz VCO. Alternatively, the divider can be bypassed for use with a lower-frequency VCO. The MAX2335 is available in a 28-pin TQFN package with exposed paddle and is specified for the -40°C to +85°C extended temperature range. The device is also offered in a lead-free package.

The MAX2852 is a single-chip RF receiver IC designed for 5GHz wireless HDMI applications. The IC includes all circuitry required to implement the complete receiver function and crystal oscillator, providing a fully integrated transmit path, VCO, frequency synthesis, and baseband/ control interface. It includes a fast-settling, sigma-delta RF fractional synthesizer with 76Hz frequency programming step size. The IC also integrates on-chip I/Q amplitude and phase-error calibration circuits. The receiver includes both an in-channel RSSI and an RF RSSI. The receiver chip is housed in a small, 68-pin thin QFN leadless plastic package with exposed pad.

The MAX7036 is a low-cost receiver designed for receiving amplitude-shift-keyed (ASK) and on-off-keyed (OOK) data in the 300MHz to 450MHz frequency range. The receiver has an RF input signal range of -109dBm to 0dBm. The MAX7036 requires few external components and has a power-down pin to put it in a low-current sleep mode, making it ideal for cost- and power-sensitive applications. The low-noise amplifier (LNA), phase-locked loop (PLL), mixer, IF filter, received-signal-strength indicator (RSSI), and baseband sections are all on-chip. The MAX7036 uses a very-low intermediate frequency (VLIF) architecture. The MAX7036 integrates the IF filter on-chip and therefore eliminates an external ceramic filter, reducing the bill-of-materials cost. The device also contains an on-chip automatic gain control (AGC) that reduces the LNA gain by 30dB when the input signal power is large. The MAX7036 operates from either a 5V or a 3.3V power supply and draws 5.5mA (typ) of current. The MAX7036 is available in a 20-pin thin QFN pack- age with an exposed pad and is specified over the AEC-Q100 Level 2 (-40°C to +105°C) temperature range. Applications include low-cost RKE garage door openers, remote controls, home automation, sensor networks, and security systems.

The MAX7034 is a fully integrated low-power CMOS super-heterodyne receiver, ideal for receiving amplitude-shift-keyed (ASK) data in the 300MHz to 450MHz frequency range. It has an RF sensitivity of -114dBm. With few external components and a low-current power-down mode, it is ideal for cost-sensitive and power-sensitive applications typical in the automotive and consumer markets.

The MAX1471 is a low power, CMOS, superheterodyne, RF dual-channel receiver designed to receive both amplitude-shift-keyed (ASK) and frequency-shift-keyed (FSK) data without reconfiguring the device or introducing any time delay normally associated with changing modulation schemes. The MAX1471 requires few external components to realize a complete wireless RF digital data receiver for the 300MHz to 450MHz ISM bands. The MAX1471 includes all the active components required in a superheterodyne receiver including: a low-noise amplifier (LNA), an image-reject (IR) mixer, a fully integrated phase-locked loop (PLL), local oscillator (LO), 10.7MHz IF limiting amplifier with received-signal-strength indicator (RSSI), low-noise FM demodulator, and a 3V voltage regulator. Differential peak-detecting data demodulators are included for both the FSK and ASK analog baseband data recovery. The MAX1471 includes a discontinuous receive (DRX) mode for low-power operation, which is configured through a serial interface bus. The MAX1471 is available in a 32-pin thin QFN package and is specified over the automotive -40°C to +125°C temperature range.

The MAX7033 is a low-power, fully integrated superheterodyne receiver from MAXIM that can receive ASK data in the 300MHz to 450MHz frequency range.

The MAX7042 is a fully integrated, low-power, CMOS superheterodyne RF receiver from Texas Instruments. It is designed to receive frequency-shift-keyed (FSK) data at rates up to 66kbps nonreturn-to-zero (NRZ) (33kbps Manchester). The MAX7042 requires only a few external components to realize a complete wireless RF receiver at 308, 315, 418, and 433.92MHz. The MAX7042 includes all the active components required in a superheterodyne receiver including a low-noise amplifier (LNA), an image-rejection (IR) mixer, a fully integrated phase-locked loop (PLL), local oscillator (LO), 10.7MHz IF limiting amplifier with received-signal-strength indicator (RSSI), low-noise FM demodulator, and a 3V regulator. Differential peak-detecting data demodulators are included for baseband data recovery. The MAX7042 is available in a 32-pin TQFN and is specified over the automotive -40°C to +125°C temperature range.

The MAX1473 is a fully integrated low-power CMOS super-heterodyne receiver that is ideal for receiving amplitude-shift-keyed (ASK) data in the 300MHz to 450MHz frequency range. It has a signal range from -114dBm to 0dBm. With few external components and a low-current power-down mode, it is suitable for cost- and power-sensitive applications in the automotive and consumer markets. The chip consists of a low-noise amplifier (LNA), a fully differential image-rejection mixer, an on-chip phase-locked loop (PLL) with integrated voltage-controlled oscillator (VCO), a 10.7MHz IF limiting amplifier stage with received-signal-strength indicator (RSSI), and analog baseband data-recovery circuitry. The MAX1473 also has a discrete one-step automatic gain control (AGC) that drops the LNA gain by 35dB when the RF input signal is greater than -57dBm. The MAX1473 is available in 28-pin TSSOP and 32-pin thin QFN packages. Both versions are specified for the extended (-40°C to +85°C) temperature range. Applications include automotive remote keyless entry, security systems, garage door openers, home automation, remote controls, local telemetry, and wireless sensor systems.

The MAX1470 is a fully integrated low-power CMOS superheterodyne receiver for use with amplitude-shift-keyed (ASK) data in the 315MHz band

MAX3544 is a single-conversion television tuner produced by Maxim. It supports DVB-T, DVB-C, GB20600 standards, and receives frequencies from 47MHz to 862MHz. The output frequency is 36MHz IF.

The MAX3543 is a broadband single-conversion television tuner from Maxim Integrated. It supports analog (PAL, SECAM) and digital (DVB-T, GB20600) television standards and covers the frequency range from 47MHz to 862MHz. It outputs an IF signal at 36MHz. The MAX3543 includes a variable-gain low-noise input amplifier, an RF tracking filter, an image rejection mixer, a peak detector, an optional internal RF gain-control loop (RFAGC), a VCO with fractional-N PLL, an IF bandpass filter, an IF variable-gain amplifier, separate analog and digital IF outputs, and a crystal oscillator.