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ADF7025BCPZ-RL

更新时间： 2024-01-26 20:02:16

品牌	Logo	应用领域
亚德诺 - ADI		ISM频段
页数	文件大小	规格书
44页	1099K
描述
High Performance ISM Band Transceiver IC

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ADF7025BCPZ-RL 数据手册

ADF7025

GENERAL DESCRIPTION

The ADF7025 is a low power, highly integrated FSK transceiver.

It is designed for operation in the license–free ISM bands of

433 MHz, 863 MHz to 870 MHz, and 902 MHz to 928 MHz.

The ADF7025 can be used for applications operating under the

European ETSI EN300-220 or the North American FCC (Part 15)

regulatory standards. The ADF7025 is intended for wideband,

high data rate applications with deviation frequencies from

100 kHz to 750 kHz and data rates from 9.6 kbps to 384 kbps.

A complete transceiver can be built using a small number of

external discrete components, making the ADF7025 very

suitable for price-sensitive and area-sensitive applications.

A zero-IF architecture is used in the receiver, minimizing power

consumption and the external component count, while avoiding

the need for image rejection. The baseband filter (low-pass) has

programmable bandwidths of 300 kHz, 450 kHz, and 600 kHz.

A high-pass pole at ~60 kHz eliminates the problem of dc offsets

that is characteristic of zero-IF architecture.

The ADF7025 supports a wide variety of programmable

features, including Rx linearity, sensitivity, and filter bandwidth,

allowing the user to trade off receiver sensitivity and selectivity

against current consumption, depending on the application.

An on-chip ADC provides readback of an integrated tempera-

ture sensor, an external analog input, the battery voltage, or the

RSSI signal, which provides savings on an ADC in some

applications. The temperature sensor is accurate to 10ꢀC over

the full operating temperature range of −40ꢀC to +85ꢀC. This

accuracy can be improved by doing a 1-point calibration at

room temperature and storing the result in memory.

The transmit section contains a VCO and low noise

Fractional-N PLL with output resolution of <1 ppm. The VCO

operates at twice the fundamental frequency to reduce spurious

emissions and frequency pulling problems.

The transmitter output power is programmable in 0.3 dB steps

from −16 dBm to +13 dBm. The transceiver RF frequency, channel

spacing, and modulation are programmable using a simple 3-wire

interface. The device operates with a power supply range of 2.3 V

to 3.6 V and can be powered down when not in use.

Rev. A | Page 3 of 44

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