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參數(shù)資料
| 型號(hào)： | AN611 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | LJT 128C 128#22D PIN RECP |
| 中文描述： | TD - SCDMA無線芯片框圖手機(jī)應(yīng)用 |
| 文件頁數(shù)： | 2/3頁 |
| 文件大?。?/td> | 37K |
| 代理商： | AN611 |
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Power-supply current dropping as the RF output power is reduced
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Low-noise power during the power-down mode
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Availability in a 48-pin QFN package (7mm x 7mm)
Power Amplifier
The MAX229X is a linear amplifier optimized for TD-SCDMA application. It can deliver +26dBm
output power with 30% power-added efficiency (PAE) and 37dBc ACLR1.
Receivers
The MAX2388 includes a low-noise amplifier (LNA), a downconverter, and a local oscillator (LO)
buffer amplifier. Requiring ultra-low current consumption (9.9mA), the device is ideal for TD-
SCDMA application. The LNA delivers fixed gains of 15dB and -3dB, and it has a 1.7dB noise
figure (NF) and +4.2dBm IIP3 at high-gain mode. The mixer is also optimized for high linearity
and low noise with two gain steps. Even with 3dB filter insertion loss, the total cascade NF can
be as low as 2.3dB. The LO buffer provides excellent isolation and adequate amplification. This
feature enables the system to have single RF-LO to drive both the transmitter and the receiver.
The device is available in an ultra-small (3mm x 3mm) 12-pin QFN package.
The MAX2309 is an IF receiver designed for the single-band and single-mode CDMA-based
cellular phone system. The input frequency range is optimized from 70MHz to 300MHz. A
variable-gain amplifier (VGA) and an I/Q demodulator make up the signal path. The device
features guaranteed +2.7V operation, a dynamic range of more than 110dB, and high input IP3 (-
33dBm at 35dBm gain, +1.7dBm at -35dBm). In addition to demodulation, the MAX2309
includes an oscillator, a synthesizer, and an LO buffer to form a self-contained IF subsystem.
The device will be able to provide the IF-LO to drive the transmitter's modulator. The MAX2309
is available in a small, 28-pin, QFN package measuring only 5mm by 5mm.
The MAX2472 is a high-isolation dual-channel VCO buffer amplifier. It is optimized for a
frequency range from 500MHz to 2500MHz. The high isolation (49dB) minimizes the transmitting
modulation signal to pull VCO frequency. The MAX2472 also includes a shutdown pin, making it
ideal for a TDD system such as TD-SCDMA.
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