T0701

Features:

One device for all GSM bands (900/ 1800/ 1900 MHz)
Support of GPRS; EDGE compatible (receive path)
Supply voltage range 2.7 V to 3.3 V
Current consumption (continuous operation)
  RX mode: 43 mA, @ Vs = 3 V
  TX mode: 50 mA, @ Vs = 3 V
  Power-down mode: < 10 A
100 dB of total voltage gain
Noise figure 4.5 dB; on-chip auxiliary VCO
Modulation loop transmitter architecture avoids TX spurious, and exhibits excellent noise performance
No TX duplex filter needed, longer battery life
3-wire bus control for RX/ TX frequencies, gain, modes, and band selection
64-Pin Thin Quad Flat Package (TQFP64)


Description

The T0701 is a bipolar integrated RF transceiver for GSM-based cellular systems (900/ 1800/ 1900 MHz) and other wireless communication applications. T0701 consists of a superheterodyne receiver with a high 1^st intermediate frequency (IF) of 378 MHz and an offset PLL transmitter architecture.

T0701 receiver functions include: low-noise preamplifier, mixer, digitally controlled gain amplifiers, quadrature demodulator, baseband filters, and baseband amplifiers. Transmitter functions of T0701 include: I/Q modulator, phase comparator, auxiliary VCO including PLL functions and down-converter. The device is controlled by a 3-wire bus.

The T0701 enables to build a small-sized GSM transceiver by adding a single PLL frequency synthesizer (main oscillator), a power amplifier (e.g. TST0911) and few external components.

Triple band operation of T0701 is possible with a 1^st IF of 378 MHz and using only a single channel raster VCO with a tuning range of approximately 8.54%.

Electrostatic sensitive T0701. Observe precautions for handling.