Analog Devices Inc./Maxim Integrated MAX2101CMQ

The MAX2101 accepts a 400 MHz to 700 MHz intermediate-frequency input and produces digitized in-phase and quadrature baseband streams for downstream DSP. It integrates gain control, local oscillator/quadrature generation, low-pass filtering, sampling-clock functions and signal detection. This is a specialized RF digitizer, not the similarly named MAX21001 gyroscope.

• Single-chip quadrature demodulation and 6-bit I/Q conversion.
• 400 MHz to 700 MHz IF-input range stated by Maxim.
• Dual ADCs support up to 60 MSPS baseband sampling.
• Integrated low-pass filters with externally adjustable bandwidth.
• Automatic baseband offset cancellation and selectable output coding.

The manufacturer data sheet describes a gain-controlled RF path with approximately 40 dB dynamic range, integrated VCO and 90-degree quadrature generation, a divide-by-16 oscillator prescaler, programmable counter and signal-detection output. The I and Q chains have low-pass filters adjustable over 10 MHz to 30 MHz and 6-bit ADCs. Output coding can be offset binary or twos complement. System performance depends on the external PLL/tank network, clocking and filter configuration.

MAX2101CMQ is listed by Maxim's ordering information as a 100-pin MQFP for 0°C to +70°C. Distributor listings specify a 14 x 20 mm 100-MQFP. The local catalog says 100-BQFP, a generic classification that requires mapping to the controlled Maxim outline. No matching local 100-MQFP JPG or confirmed package registry entry was found.

Assembly checks

• Confirm body and lead-span dimensions against the Maxim drawing.
• Verify pin one and board pad geometry.
• Check legacy solder and moisture-handling requirements.

The controlled Maxim pin table assigns IF input, oscillator/tank, AGC, baseband filter tuning, references, I/Q digital outputs, clocks and separate supply pins across the 100-pin package. Do not transplant pin numbers from generic MQFP artwork or MAX2101 variants without checking the exact data sheet and board schematic.

Verify all electrical limits and test conditions in the original Maxim data sheet before redesign or repair.

The database contains related MAX2101BCMQ in a 100-BQFP catalog class. It is only a comparison candidate: grade, electrical limits, oscillator behavior, package marking and board compatibility must be checked. No pin-compatible substitution is approved by this listing.

A Maxim Integrated-authored MAX2101 data sheet, Rev. 4, 5/96, provides the device architecture, electrical characteristics and CMQ ordering code. The original manufacturer's current official product page was not retrievable during this review, so the historical data-sheet copy should be validated against a controlled supplier copy before release.

• Direct-broadcast satellite and TV receive-only receivers.
• Legacy CATV and wireless LAN IF digitization.
• Maintenance of validated quadrature-demodulator boards.

Confirm original markings, lot/date traceability, condition, package integrity and applicable environmental restrictions. The local catalog lists 8,670 pieces at USD 25.47, minimum quantity 11, with no tiers. An indexed Rochester listing also shows 8,670 units, with USD 25.07 at one, USD 23.82 at 100, USD 22.56 at 500, USD 21.31 at 1,000 and USD 20.06 at 10,000. A separate seller lists 8,670 at USD 50.197 for one and lower volume prices. External listings do not authenticate the local 11-unit price or available stock; procurement reconciliation is required and catalog pricing is left unchanged.

Review LO/tank design, 5 V supply distribution, AGC and filter-tune networks, clocking, output coding and the controlled MQFP footprint. The package JPG and registry are incomplete and commercial evidence is not reconciled. Keep this record in manual review and noindex; do not publish until every check passes.