Analog Devices Inc. AD9867BCPZRL

The AD9867 is a 3.3 V CMOS mixed-signal front end for modem transmit and receive paths. The transmit chain converts digital data to an analog output with optional 2x or 4x interpolation. The receive chain routes one of two differential analog inputs through programmable gain and low-pass filtering to a 10-bit ADC. Flexible digital timing permits half-duplex or full-duplex use and supports system-level power management.

• Integrates both transmit and receive converters in one device.
• Provides digitally controlled receive gain and selectable input channel.
• Includes interpolation, receive filtering, clock multiplication and auxiliary clocks.
• Supports half-duplex and full-duplex interface modes.
• Offers power-down and power-reduction options for system design.

The transmit path provides a 10-bit DAC with 2x or 4x interpolation and a maximum DAC update rate of 250 MSPS. The receive path includes a low-noise RxPGA, two-channel input mux, optional 6 dB overload attenuator, programmable third-order low-pass filter and 10-bit ADC rated up to 75 MSPS. An internal PLL multiplies the reference clock. Two auxiliary programmable clock outputs and a programmable transmit-driver disable delay support system timing.

ADI's exact-model table identifies AD9867BCPZRL as a 64-lead LFCSP measuring 9 mm x 9 mm x 0.75 mm with an exposed pad. The LCDChip catalog labels it 64-VFQFN Exposed Pad, CSP; the package registry maps the corresponding 64-VFQFN Exposed Pad entry to 64-VFQFN-Exposed-Pad.jpg. This generic registry image is missing and the LFCSP-to-VFQFN mechanical match has not been confirmed against the ADI package drawing. Do not use a generic footprint as a substitute for the exact CP-64 package drawing.

Layout checks

• Confirm the 9 mm x 9 mm LFCSP outline, exposed-pad land and pin-one orientation.
• Review thermal-via and ground-return guidance in the exact ADI package resources.
• Keep sensitive receive inputs and clock routing separated from transmit switching paths.

The registered JPG is absent; the package mapping needs manual confirmation before publication.

ADI's functional diagram identifies differential receive inputs RX1+/RX1- and RX2+/RX2-, differential transmit outputs IOUT_P+/IOUT_P-, multiplexed ADIO and Tx/Rx digital datapath signals, RXCLK, RXEN/RXSYNC, TXCLK/TXQUIET and TXEN/TXSYNC. Control and timing signals include RXSELECT, ATTEN/RXQUIET, AGC[4:0], TX_DISABLE, PWR_DWN, OSCIN, XTAL and CLKOUT1/CLKOUT2. The public Rev. SpB brief does not provide a complete numeric pin table; use ADI's exact package pin drawing and full design documentation for pad-number assignment.

Maximum update rates are device capabilities, not guaranteed performance at every system configuration. Consult the full ADI design documentation for electrical limits and test conditions.

No LCDChip database-verified alternate part is linked. A candidate must be checked for converter resolution and speed, receive gain/filter path, digital bus timing, clocking, power modes, exposed-pad layout, temperature grade and software control. ADI's family page names AD9993 in its hardware ecosystem, but that listing alone does not establish a pin- or software-compatible replacement.

Analog Devices publishes the AD9867 Rev. SpB data sheet and an exact AD9867BCPZRL part-model entry. The model is identified as production, while the family is marked not recommended for new designs. A 2021 ADI product/process-change notice covers LFCSP assembly changes; confirm applicable lot and package drawing for a production build.

• Power-line networking modem analog front ends.
• Broadband transmit/receive paths using shared digital control.
• Legacy modem repair where the exact part and footprint are confirmed.

Match the complete AD9867BCPZRL code, exposed-pad package, reel quantity, markings and lot traceability. Check ADI product-change notices and package resources against received material. Direct distributor pages show the exact reel part as non-stocked or with lead time, so LCDChip's existing inventory and unit price are not a verified live authorized-distributor quotation.

Verify the exact LFCSP land pattern, exposed-pad grounding, clock and power sequencing, digital interface timing, Rx/Tx isolation and lot-specific package notice before integration. The missing JPG, generic package mapping, incomplete numeric pin documentation and unverified current distributor stock/price ladder prevent publication.