MAX2389

W-CDMA LNA/Mixer ICs

Ultra-Small, Ultra-Low Current LNA/Mixer IC For W-CDMA, IMT2000, and UMTS Cellular Phones


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Description

The MAX2387/MAX2388/MAX2389 low-noise amplifier (LNA), downconverter mixers designed for W-CDMA applications, are ideal for ARIB (Japan) and ETSI-UMTS (Europe) based systems. The MAX2387/MAX2388/MAX2389 feature ultra-low current consumption and exceptionally low noise figures in ultra-small packages.

The MAX2387/MAX2388 include an LNA, a downconverter mixer, and a local-oscillator (LO) buffer. The MAX2389 has an LNA and mixer, but minimizes current consumption by omitting the LO buffer. For all devices, the LNA and downconverter mixers are optimized for the 2110MHz to 2170MHz band. All devices feature a high-gain mode and a low-gain mode of LNA operation. The MAX2387 has a 32dB gain step, and the MAX2388/MAX2389 have an 18dB gain step. All ICs include a shutdown mode, powering down the IC during the front-end receiver's idle periods.

The mixer 3rd-order nonlinearity performance is set using an external biasing resistor. For the MAX2387/MAX2388, mixer performance is optimized for a -10dBm typical drive at the LO buffer input port. The MAX2389 mixer performance is optimized for a -4dBm typical drive at the LO input port. The LO port for all versions is configurable for either single-ended or differential operation.

These devices operate from a +2.7V to +3.3V single supply and are available in ultra-small (3mm x 3mm) 12-pin leadless packages (QFN).
MAX2387, MAX2388, MAX2389: Typical Application Circuit MAX2387, MAX2388, MAX2389: Typical Application Circuit Enlarge+

Key Features

  • Ultra-Low Current Consumption: 10.7mA (MAX2387), 9.9mA (MAX2388), and 7.9mA (MAX2389)
  • +2.7V to +3.3V Single-Supply Operation
  • Mixer NF: 7dB SSB
  • Cascaded Noise Figure: 2.3dB
  • LNA Low-Gain Mode: 32dB Gain Step (MAX2387) or 18dB Gain Step (MAX2388/MAX2389)
  • Mixer IIP3: 6dBm
  • <1µA Shutdown Current
  • Ultra-Small (3mm x 3mm) 12-Pin QFN Package

Applications/Uses

  • Dual-Mode WCDMA/GSM Cellular Phones
  • Japanese 3rd-Generation WCDMA Cellular Phones
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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