AD9864BCPZ: IF Digitizing Subsystem
The AD9864* is a general-purpose IF subsystem that digitizes a low level 10 MHz to 300 MHz IF input with a signal bandwidth ranging from 6.8 kHz to 270 kHz. The signal chain of the AD9864 consists of a low noise amplifier (LNA), a mixer, a band-pass Σ-Δ analog-to-digital converter (ADC), and a decimation filter with programmable decimation factor. An automatic gain control (AGC) circuit gives the AD9864 12 dB of continuous gain adjustment. Auxiliary blocks include both clock and LO synthesizers.
The high dynamic range of the AD9864 and inherent antialiasing provided by the band-pass Σ Δ converter allow the device to cope with blocking signals up to 95 dB stronger than the desired signal. This attribute often reduces the cost of a radio by reducing IF filtering requirements. Also, it enables multimode radios of varying channel bandwidths, allowing the IF filter to be specified for the largest channel bandwidth.
The SPI(R) port programs numerous parameters of the AD9864, allowing the device to be optimized for any given application. Programmable parameters include synthesizer divide ratios, AGC attenuation and attack/decay time, received signal strength level, decimation factor, output data format, 16 dB attenuator, and the selected bias currents.
The AD9864 is available in a 48-lead LFCSP package and operates from a single 2.7 V to 3.6 V supply. The total power consumption is typically 56 mW and a power-down mode is provided via serial interfacing.
AD9864BCPZ 特点
- 10 MHz to 300 MHz Input Frequency
- 6.8 kHz to 270 kHz Complex Output Signal Bandwidth
- 7.5 dB SSB NF
- –7.0 dBm IIP3
- 95 dB Dynamic Range with 12 dB Continous AGC Range Enabled
- -18 or -30 dBm max IF Input with AGC Disabled
- 16 dB Front End Attenuator
- LO and Sampling Clock Synthesizers
- Baseband I/Q 16-Bit (or 24-Bit) Serial Digital Output
- Programmable Decimation Factor, Output Format, AGC, and Sythesizer Settings
- Simple Interface to DSP's such as ADI's BlackfinTM
- 2.7 V to 3.6 V Supply Voltage
AD9864BCPZ 功能框图
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AD9864 芯片订购指南
| 产品型号 | 产品状态 | 封装 | 引脚 | 温度范围 |
|---|---|---|---|---|
| AD9864-EB | Prodn | Evaluation Boards | - | 工业 |
| AD9864BCPZ | Prodn | 48 ld LFCSP 7x7mm (5.25EP) | 48 | 工业 |
| AD9864BCPZRL | Prodn | 48 ld LFCSP 7x7mm (5.25EP) | 48 | 工业 |
AD9864BCPZ 应用技术支持与电子电路设计开发资源下载
- AD9864 数据手册DataSheet下载. pdf
- Analog Devices, Inc.ADI 美国模拟器件公司产品订购手册 .PDF
- ADC模数转换器选型指南 . PDF