Datasheet for AD9864:
- Manufacturer Part Number : AD9864
- Manufacturer : AD
- Description : IF Digitizing Subsystem
- Series : AD9864
- Reference Price : USD 8.056
- Our Price : We have a better price, contact us by email
- Product Type : Integrated/Special Purpose A/D Converters
- Function : IF/RF Receivers
- Current Suggest : Production
- Status : Production
- RoHS Status: -
- Voltage: -
- Feature: -
- Package Case: -
- Temperature Range: -
- Packing: Reel/Tray/Tube
- Standard Packing Quantity: -
- Country of Origin: -
- Other Part Number : AD9864
- Shipping methods : DHL FEDEX UPS TNT
- Delivery Time : Ship within 1 day.
- Manufacturer Production time : 6-8 weeks (Normally have stocks)
- Weight : 0.001KG
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- 10 MHz to 300 MHz input frequency
- 6.8 kHz to 270 kHz output signal bandwidth
- 7.5 dB single sideband noise figure (SSB NF)
- −7.0 dBm input third-order intercept (IIP3)
- AGC free range up to −34 dBm
- 12 dB continuous AGC range
- 16 dB front-end attenuator
- Baseband I/Q 16-bit (or 24-bit) serial digital output
- LO and sampling clock synthesizers
- Programmable decimation factor, output format, AGC, and synthesizer settings
- 370 Ω input impedance
- 2.7 V to 3.6 V supply voltage
- Low current consumption: 17 mA
- 48-lead LFCSP package
The AD9864 is a general-purpose IF subsystem that digitizes alow level, 10 MHz to 300 MHz IF input with a signal bandwidthranging from 6.8 kHz to 270 kHz. The signal chain of the AD9864consists of a low noise amplifier (LNA), a mixer, a band-pass Σ-∆analog-to-digital converter (ADC), and a decimation filter withprogrammable decimation factor. An automatic gain control(AGC) circuit gives the AD9864 12 dB of continuous gainadjustment. Auxiliary blocks include both clock and localoscillator (LO) synthesizers.
The high dynamic range of the AD9864 and inherent antialiasingprovided by the band-pass Σ-∆ converter allow the device to copewith blocking signals up to 95 dB stronger than the desired signal.This attribute often reduces the cost of a radio by reducing IFfiltering requirements. Also, it enables multimode radios of varyingchannel bandwidths, allowing the IF filter to be specified for thelargest channel bandwidth.
The SPI port programs numerous parameters of the AD9864,allowing the device to be optimized for any given application.Programmable parameters include synthesizer divide ratios, AGCattenuation and attack/decay time, received signal strength level,decimation factor, output data format, 16 dB attenuator, and theselected bias currents.
The AD9864 is available in a 48-lead LFCSP package and operatesfrom a single 2.7 V to 3.6 V supply. The total power consumptionis typically 56 mW and a power-down mode is provided viaserial interfacing.
Applications
- Multimode narrow-band radio products
- Analog/digital UHF/VHF FDMA receivers
- TETRA, APCO25, GSM/EDGE - Portable and mobile radio products
- SATCOM terminals
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
