The AD9874 is a general purpose IF subsystem that digitizes a low level 10-300MHz IF input signal with a bandwidth of up to 270 kHz. The signal chain of the AD9874 contains a low-noise amplifier, mixer, a band pass sigma-Delta analog-to-digital converter and a decimation filter with programmable decimation factor. An automatic gain control (AGC) circuit provides the AD9874 with 12 dB of continuous gain adjustment

The high dynamic range and inherent anti-aliasing provided by the bandpass sigma delta converter allows the AD9874 to cope with blocking signals 95 dB stronger than the desired signal. Auxiliary blocks include clock and LO synthesizers in addition to a serial peripheral interface port.

The SPI port programs numerous parameters of the AD9874, thus 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 bias currents of the LNA and mixer can be further reduced at the expense of degraded performance for battery-powered applications.

Applications

• Multimode Narrow-Band Radio Products Analog/Digital UHF/VHF FDMA Receivers TETRA, APCO25, GSM/EDGE
• Portable and Mobile Radio Products
• Base Station Applications
• SATCOM Terminals

Part#	RxTx Function	Channel BW MHz	IF or RF Range MHz	Primary Application	Supply V	Product Description	Price* (1000-4999)	Resolution (Bits)	# Chan	T-Put Rate
AD9868	Bband CODEC	-	-	Broadband Wireline, Home Networking	Multi(+3.3Anlg, +3.3Dig)	10-Bit DAC/80 MSPS, 10-Bit ADC, Mixed-Signal Front-End for Broadband Modem Applications	-	10	1	80MSPS
AD9865	Bband CODEC	35	DC-40	Broadband Wireline, Home Networking	Single(+3.3)	10-Bit DAC/80 MSPS, 10-Bit ADC, Mixed-Signal Front-End for Broadband Modem Applications	$10.07	10	1	80MSPS
AD9869	Bband CODEC	54	DC-40	Broadband Wireline, Home Networking	Multi(+3.3Anlg, +3.3Dig), Single(+3.3)	12-Bit DAC/80 MSPS, 12-Bit ADC, Mixed-Signal Front-End for Broadband Modem Applications	$18.27	12	1	80MSPS
AD9866	Bband CODEC	35	DC-40	Broadband Wireline, Home Networking	Single(+3.3)	12-Bit DAC/80 MSPS 12-Bit ADC, Mixed-Signal Front-End for Broadband Modem Applications	$18.77	12	1	80MSPS
AD9863	Bband Quadrature CODEC	25/40	DC-40	Broadband Wireless	Single(+3), Single(+3.3)	Dual, 12-Bit DAC/12-Bit 50/80 MSPS ADC, Mixed-Signal Front-End Processor (MxFE™) For Bband Apps	$21.68	12	2	50MSPS
AD9861-50	Bband Quadrature CODEC	25	DC-40	Broadband Wireless	Single(+3), Single(+3.3)	Dual 10-Bit DAC/Dual 50 MSPS ADC Mixed-Signal Front-End (MxFE™) For Broadband Comms Apps	$10.84	10	2	50MSPS
AD9861-80	Bband Quadrature CODEC	40	DC-40	Broadband Wireless	Single(+3), Single(+3.3)	Dual 10-Bit DAC/Dual 80 MSPS ADC Mixed-Signal Front-End (MxFE™) For Broadband Comms Apps	$10.84	10	2	80MSPS
AD9862	Bband Quadrature CODEC	32	DC-100	Broadband Wireless	Single(+3.3)	Dual 14-Bit DAC/Dual 12-Bit ADC Mixed Sig Front-End (MxFE™) for Bband Comms, Rx&Tx PGA, Digital SSB	$30.11	12	2	64MSPS
AD9860	Bband Quadrature CODEC	32	DC-100	Broadband Wireless	Single(+3.3)	Dual 12-Bit DAC/Dual 10-Bit ADC Mixed Sig Front-End (MxFE™) for Bband Comms, Rx&Tx PGA, Digital SSB	$13.90	10	2	64MSPS
AD6600	IF-to-Bits Rx Subsys	5 to 10	70-250	Wireless Infrastructure	Multi(+3.3, +5), Single(+5)	11-Bit, 1-Channel 20MSPS, or 2-Channel 10 MSPS Gain-Ranging ADC with RSSI	$38.96	11	2	20MSPS
AD9864	IF-to-Bits Rx Subsys	0.007 to 0.270	10-300	Narrowband Radio, Portable & Mobile Radio	Single(+3), Single(+3.3)	24-Bit Bandpass Sigma-Delta ADC/IF Digitizing Subsystem	$10.07	24	1	375kSPS
AD9874	IF-to-Bits Rx Subsys	0.007 to 0.270	10-300	Narrowband Radio, Portable & Mobile Radio	Single(+3), Single(+3.3)	24-Bit Bandpass Sigma-Delta ADC IF Digitizing Subsystem	$15.14	24	1	541.5kSPS
AD6650	IF-to-Bits Rx Subsys	3.5	70-300	Wireless Infrastructure	Single(+3), Single(+3.3)	16/24-Bit, 1 MSPS, Diversity IF-to-Baseband GSM/EDGE Narrowband Receiver	$20.64	24	2	1MSPS
AD9969	Multi-Chan Bband CODEC	8	DC-70	Cable Modem/Set Top Box	Single(+3.3)	3.3 V CMOS MxFE™ Mixed Signal Front End for broadband Set Top Box And Cable Modem applications	$14.42	12	3	29MSPS
AD9878	Multi-Chan Bband CODEC	8	DC-70	Cable Modem/Set Top Box	Single(+3.3)	Dual 12-Bit, 29 MSPS Direct IF ADC/12-Bit Direct IF DAC, Mixed-Signal Front-End for Broadband Apps	$13.68	12	4	29MSPS
AD9879	Multi-Chan Bband CODEC	8	DC-70	Cable Modem/Set Top Box	Single(+3.3)	12-Bit Mixed-Signal Front-End for Set Top Box & Cable Modem Applications	$12.12	12	5	29MSPS

* The pricing listed here is provided only for budgetary purposes as recommended list price in U.S. Dollars in the United States ex factor per unit for the stated volume. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
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