The AD9877 is a single supply Cable Modem/Set Top Box Mixed Signal Front End. The device contains a transmit path interpolation filter, a complete quadrature digital upconverter and transmit DAC. The receive path contains a 12-bit ADC and Dual 8-bit ADCs. All internally required clocks and an output system clock are generated by the PLL from a single crystal or clock input.

The transmit path interpolation filter provides upsampling factors of 12x or 16x with an output signal bandwidth as high as 8.4 MHz. The direct digital synthesizer (DDS) can generate carrier frequencies up to 65 MHz with 26 bits of frequency tuning resolution. The transmit DAC resolution is 12 bits and can run at sampling rates as high as 232 MSPS. Analog output scaling from 0 to 7.5 dB in 0.5 dB steps is available to preserve transmit path SNR when reduced output levels are required.

The 12-bit ADC has excellent undersampling performance allowing it to deliver better than 10 ENOBs with IF inputs up to 75 MHz. The 12-bit IF ADC has a sampling rate of up to 33MHz, allowing it to process wideband signal inputs.

Two programmable sigma delta DACs are available which can be used to control external components such as variable gain amplifiers (VGAs) or voltage-controlled tuners.

The AD9877 integrates a CA port that enables a host processor to control the AD8321/AD8323 or AD8322/AD8327 programmable gain amplifier (PGA) cable drivers through the MxFE SPORT.

The AD9877 is available in a 100-pin MQFP package. It offers enhanced receive path undersampling performance and lower cost, compared with the pin compatible AD9873. The AD9877 is specified over the extended industrial (-40ºC to +85°C) temperature range.

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	$9.95	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	$18.05	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	$18.55	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	$21.42	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	$10.71	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	$10.71	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	$29.75	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	$13.74	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	$38.50	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	$9.95	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	$14.96	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	$20.40	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	$14.25	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	$13.52	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	$11.98	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.
** Pricing is currently unavailable. Click on the product number to see the Product Page for additional information.

The model number is a specific version of a generic that can be purchased or sampled.

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• Pre-Release: The model has not been released to general production, but samples may be available.
• Production: The model is currently being produced, and generally available for purchase and sampling.
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• Obsolete: The specific part is obsolete and no longer available. Other models listed in the table may still be available (if they have a status that is not obsolete).

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For detailed drawings and chemical composition please consult our  Package Site

Pin Count is the number of pins, balls, or pads on the device. Pin-out diagrams & pin function descriptions may be found in the datasheet.

This is the acceptable operating range of the device. The various ranges specified are as follows:

• Commercial: 0 to +70 degrees Celsius
• Military : -55 to +125 degrees Celsius
• Industrial: Temperature ranges may vary by model. Please consult the datasheet for more information.
• Automotive: -40 to +125 degrees Celsius

The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

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