MAX1219ECQ+D - 12-Bit 210Msps Dual ADC | Maxim Integrated
MPN: MAX1219ECQ+D ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $24.5 | $24.50 |
| 10 | $22.05 | $220.50 |
| 100 | $19.6 | $1,960.00 |
| 500 | $17.4 | $8,700.00 |
| 1,000 | $15.1 | $15,100.00 |
MAX1219ECQ+D Overview
An ADC (analog-to-digital converter) is a data-acquisition component that samples continuous analog waveforms and quantizes each sample to a discrete digital code at a defined sample frequency (Fs). The MAX1219ECQ+D belongs to the high-speed pipeline-ADC class, a sub-category of integrated data converters within power management and signal-chain semiconductors. Pipeline ADCs trade modest latency (typically 3-5 clock cycles) for high sample rate and low power per conversion, making them the dominant architecture for IF digitization between 10 MHz and 200 MHz where SAR ADCs cannot keep up and flash ADCs burn excessive current.
Key performance features include 210 Msps maximum conversion rate per channel, 12-bit resolution, 1.8V single supply operation, low power dissipation typical of CMOS pipeline ADCs, and a clock-duty-cycle equalizer that maintains SNR across non-50% clock sources. The internal reference and differential analog inputs simplify front-end design by eliminating external reference buffers and allowing direct coupling to differential IF stages from upstream mixers and baluns.
Typical applications include multi-carrier GSM/EDGE base-station receivers, WiMAX and LTE broadband wireless links, cable modem head-ends, and set-top box tuners where the dual channels handle I/Q or diversity paths. The wide full-power input bandwidth and broadband spurious-free dynamic range also suit it to test-and-measurement digitizers and medical ultrasound beamformers. The clock-duty-cycle equalizer is internally fixed and not externally disable-able.
When designing with this device, follow the reference-layout guidelines closely because the 210 Msps edge rates couple aggressively into analog traces. Keep input traces length-matched, provide solid ground stitching around the analog and clock pins, and place input RC anti-alias networks within 100 mils of the analog inputs to preserve SNR.
Drop-in alternatives for MAX1219ECQ+D — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with MAX1219ECQ+D (same form factor and footprint) — differing in Package, Architecture, Operating Temperature Range, Resolution, Terminal Form.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MAX1218ECQ+TD
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View Datasheet →MAX1217ECQ+TD
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View Datasheet →MAX1219ECQ+D Maximum Ratings & Electrical Characteristics
| Resolution | 12 bits |
| Number of Channels | 2 (dual, I/Q or diversity) |
| Maximum Sample Rate | 210 Msps per channel |
| Supply Voltage | 1.8 V (single) |
| Architecture | CMOS Pipeline |
| Input Type | Differential analog |
| Reference Type | Internal |
| Package | 100-pin HTFQFP (TQFP-100 exposed-pad style) |
| Terminal Form | Gull-wing |
| Operating Temperature Grade | Industrial |
| Clock Duty-Cycle Equalizer | Yes (always on, requires >=40 MHz clock) |
MAX1219ECQ+D 100-pin htfqfp (tqfp-100 exposed-pad style) Pin Configuration Guide
Pin configuration for MAX1219ECQ+D (100-pin htfqfp (tqfp-100 exposed-pad style) package). This analog component features input, output, and power supply pins. Refer to the manufacturer datasheet for offset null, compensation, and enable pin configurations. Ideal for signal conditioning and amplifier circuits.
No detailed pinout data available for MAX1219ECQ+D.
Refer to the datasheet for full pin configuration.
Typical Applications
MAX1219ECQ+D is suitable for 6 applications: Multi-Carrier GSM/EDGE Base-Station Receiver, Broadband Cable Modem Head-End Digitizer, WiMAX/LTE Broadband Wireless IF Digitization, Set-Top Box Digital Tuner IF Sampling, Medical Ultrasound Beamformer Input, Test and Measurement Digitizer Front End.
Multi-Carrier GSM/EDGE Base-Station Receiver
The MAX1219ECQ+D's dual 12-bit 210 Msps ADC cores digitize the I and Q channels of a multi-carrier base-station receiver directly at the intermediate frequency, eliminating a second mixer and saving PCB area. Its 1.8 V single-supply rail simplifies interface to modern baseband ASICs and its CMOS pipeline architecture provides the dynamic range required to resolve adjacent-channel carriers without an external low-noise preamplifier.
Recommended
Broadband Cable Modem Head-End Digitizer
Cable head-end digitizers need wide input bandwidth and excellent linearity to capture QAM-modulated downstream channels stacked across hundreds of megahertz of spectrum. The MAX1219ECQ+D's 12-bit resolution and pipeline architecture deliver the dynamic range for 256-QAM and 1024-QAM constellations while the dual channels allow diversity capture from two antenna feeds in a single device.
Recommended
WiMAX/LTE Broadband Wireless IF Digitization
WiMAX and LTE receivers digitize wide-bandwidth OFDM signals at the IF output of the front-end mixer, requiring ADC sample rates of 100-200 Msps and spurious-free dynamic range above 70 dBc. The MAX1219ECQ+D's 210 Msps maximum sample rate and dual channels cover mainstream 10 MHz, 20 MHz, and 40 MHz channel bandwidths, while its 1.8 V supply integrates cleanly into modern RF front-end power trees.
Recommended
Set-Top Box Digital Tuner IF Sampling
Set-top box IF-sampling tuners benefit from integrating two 12-bit ADC cores in a single 100-pin HTFQFP package to capture both the main and picture-in-picture video streams simultaneously. The MAX1219ECQ+D's internal reference and differential analog inputs remove the need for an external reference buffer, reducing BOM cost and shrinking PCB footprint inside slim-line set-top enclosures.
Recommended
Medical Ultrasound Beamformer Input
Ultrasound beamformers digitize dozens of channels at IF frequencies of 10-50 MHz, where dual-channel ADCs like the MAX1219ECQ+D reduce channel count by handling two transducer preamp outputs per chip. The 12-bit resolution provides the dynamic range needed for tissue-harmonic imaging while the differential inputs reject common-mode noise from the long transducer cable harness.
Recommended
Test and Measurement Digitizer Front End
Wideband oscilloscopes and spectrum-analyzer front ends use high-speed 12-bit ADCs like the MAX1219ECQ+D to capture IF outputs from internal mixer stages. The dual channels support parallel measurement channels or quadrature sampling from the analyzer's mixer, and the 210 Msps rate comfortably covers 70 MHz IF bandwidths common in production-line spectrum analyzers.
Recommended
Recommended Products Summary
Engineering reference data for MAX1219ECQ+D — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MAX1218ECQ+TD | MAX1217ECQ+TD | MAX1219ECQ+TD |
|---|---|---|---|---|
| Package | 100-pin HTFQFP | 100-pin HTFQFP - same | 100-pin HTFQFP - same | 100-pin HTFQFP - same |
| Brand | Analog Devices (Maxim Integrated) | Analog Devices (Maxim Integrated) | Analog Devices (Maxim Integrated) | Analog Devices (Maxim Integrated) |
| Resolution | 12 bits | 12 bits | 12 bits | 12 bits |
| Number of Channels | 2 (dual) | 2 (dual) | 2 (dual) | 2 (dual) |
| Supply Voltage | 1.8 V | 1.8 V | 1.8 V | 1.8 V |
| Architecture | CMOS Pipeline | CMOS Pipeline | CMOS Pipeline | CMOS Pipeline |
| Input Type | Differential | Differential | Differential | Differential |
| Operating Temperature Grade | Industrial | Industrial | Industrial | Industrial |
Key Differentiators
- Dual 12-bit 210 Msps cores in a single 100-pin HTFQFP (vs Single-channel 12-bit ADC alternatives)
- Always-on internal clock duty-cycle equalizer (vs ADCs that require 50% clock duty cycle)
- Internal reference and differential analog inputs (vs ADCs requiring external reference buffers)
Design Notes
Follow the Maxim Integrated MAX1219 reference-layout recommendations closely because the 210 Msps edge rates couple aggressively into nearby analog traces. Keep analog input trace pairs length-matched to within 50 mils, surround the analog and clock pins with a solid ground stitch fence, and place input RC anti-alias networks within 100 mils of the analog input pins to preserve SNR.
Estimated: at 210 Msps with both channels active, the 1.8 V supply typically draws roughly 100-150 mA; therefore use a low-noise LDO (e.g., a TPS7A4701-class part) with bulk decoupling of 10 uF plus 100 nF X7R placed at the supply pin to suppress switching ripple that would otherwise leak into the analog front-end and degrade SNR.
Do not clock the MAX1219ECQ+D below 40 MHz or leave the clock pin floating - the always-on internal duty-cycle equalizer is not externally disable-able and the digital outputs begin to change state randomly below the minimum clock frequency, which can increase I-Supply by up to 40 mA and create EMI issues. Always tie the clock input to a valid LVCMOS or LVDS source during board bring-up.
Connect the HTFQFP exposed thermal pad to a low-impedance ground plane using at least nine thermal vias in a 3x3 array. Separating analog and digital ground regions and stitching them only at the exposed pad minimizes digital switching noise return paths that would otherwise degrade the ADC's spurious-free dynamic performance.
Compliance Information
Compliance values are marked unknown because the verified distributor data captured on 2026-10-14 did not return RoHS / lead-free declarations for MAX1219ECQ+D. The +D suffix historically indicates a lead-free Maxim/ADI variant, but lot-specific confirmation is recommended before use in restricted-substance programs.
