MAX12553ETL+G3U - 14-Bit 65Msps 3.3V ADC | Analog Devices
MPN: MAX12553ETL+G3U ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $12.85 | $12.85 |
| 10 | $11.62 | $116.20 |
| 100 | $10.18 | $1,018.00 |
| 500 | $9.05 | $4,525.00 |
| 1,000 | $8.12 | $8,120.00 |
MAX12553ETL+G3U Overview
An ADC (analog-to-digital converter) is a mixed-signal integrated circuit that samples a continuous analog input voltage and produces a discrete digital code proportional to that voltage. High-speed 14-bit ADCs such as the MAX12553 are positioned within the data-converter hierarchy between 12-bit general-purpose parts and 16-bit precision parts, occupying the sweet spot for communications, medical imaging, and instrumentation applications where dynamic range beyond 12 bits is required but full 16-bit linearity is not essential. The MAX12553 operates from a single 3.3V supply, simplifying system power-rail design relative to ADCs requiring 5V analog and 3.3V digital rails.
Key specifications include a 65Msps maximum sampling rate, 14-bit resolution, single 3.3V analog supply, internal 2.048V bandgap reference (or optional external reference), and a flexible CMOS-compatible digital interface. The fully differential input stage provides excellent common-mode noise rejection and supports both single-ended-to-differential and fully differential analog front-end topologies. The internal duty-cycle equalizer (DCE) compensates for clock duty-cycle distortion, simplifying timing closure with non-50% clock sources.
Architecturally, the MAX12553 uses a pipelined multi-stage converter topology that delivers 14-bit linearity at 65Msps while maintaining low latency suitable for multiplexing multi-channel systems. The wideband T/H front-end handles input signals up to and beyond the Nyquist frequency, and the internal reference structure allows the user to select between the on-chip 2.048V bandgap or an external reference for gain calibration or ratiometric measurement. The device supports both single-ended and differential input clock drive modes.
Typical applications include IF/baseband digitizing in wireless infrastructure, medical ultrasound beamformers, portable instrumentation, CCD imaging, and multichannel data acquisition systems. The wide input bandwidth and differential input make it well suited to drive ADCs directly from SAW filter outputs or transformer-coupled IF stages without an additional pre-amplifier.
When designing with the MAX12553, place the exposed paddle (EP) on a continuous ground pour with multiple thermal vias to achieve the rated 14-bit performance and ensure specified INL/DNL across the industrial temperature range. Decouple AVDD and DVDD separately with low-ESR 0.1uF and 10uF ceramic capacitors placed as close as possible to the supply pins, and route the analog and digital ground returns to a single-point star ground beneath the device.
This page synthesizes distributor pricing, drop-in alternatives sourced from the MAX12553 family, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for MAX12553ETL+G3U — 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 MAX12553ETL+G3U (same form factor and footprint) — differing in Input Type, Sampling Rate, Resolution, Operating Temperature, Package.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MAX12553ETL+
✅ Drop-In📋 Reference alternative (not in catalog)
MAX12553ETL+TG3U
✅ Drop-In✓ In Stock
$10.45 / Unit
View Datasheet →MAX12554ETL+
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
MAX12555ETL+
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
MAX1209ETL+TG3U
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$9.95 / Unit
View Datasheet →MAX12528ETK+
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$24.85 / Unit
View Datasheet →MAX12553ETL+G3U Maximum Ratings & Electrical Characteristics
| Manufacturer | Analog Devices (formerly Maxim Integrated) |
| Part Number | MAX12553ETL+G3U |
| Description | 3.3V, 14-bit, 65Msps ADC with differential T/H input |
| Resolution | 14 bit |
| Sampling Rate | 65 Msps |
| Supply Voltage (Analog) | 3.3 V |
| Supply Voltage (Digital) | 3.3 V |
| Number of Channels | 1 |
| Input Type | Differential (single-ended-compatible input clock) |
| Internal Reference | 2.048 V bandgap |
| External Reference Support | Yes |
| Duty-Cycle Equalizer | Yes (internal DCE) |
| Package | 40-pin TQFN (HVQCCN), 6mm x 6mm x 0.8mm |
| Package Code | HVQCCN |
| Terminal Form | No Lead |
| Mounting Type | Surface Mount |
| Operating Temperature Range | -40C to +85C (industrial) |
| Temperature Grade | Industrial |
| RoHS Status | Compliant |
MAX12553ETL+G3U Pin Configuration
| Pin 1 | AVDD — Analog 3.3V supply |
| Pin 2 | AGND — Analog ground |
| Pin 3 | INP — Differential analog input positive |
| Pin 4 | INN — Differential analog input negative |
| Pin 5 | AGND — Analog ground |
| Pin 6 | AVDD — Analog 3.3V supply |
| Pin 7 | REF — Reference voltage (internal/external select) |
| Pin 8 | REFOUT — Internal reference output |
| Pin 9 | COM — Common-mode voltage output |
| Pin 10 | AGND — Analog ground |
| Pin 11 | CLKP — Differential clock input positive |
| Pin 12 | CLKN — Differential clock input negative |
| Pin 13 | AVDD — Analog 3.3V supply |
| Pin 14 | AGND — Analog ground |
| Pin 15 | DVDD — Digital 3.3V supply |
| Pin 16 | DGND — Digital ground |
| Pin 17 | D13 — Digital output bit 13 (MSB) |
| Pin 18 | D12 — Digital output bit 12 |
| Pin 19 | D11 — Digital output bit 11 |
| Pin 20 | D10 — Digital output bit 10 |
| Pin 21 | D9 — Digital output bit 9 |
| Pin 22 | D8 — Digital output bit 8 |
| Pin 23 | D7 — Digital output bit 7 |
| Pin 24 | D6 — Digital output bit 6 |
| Pin 25 | D5 — Digital output bit 5 |
| Pin 26 | D4 — Digital output bit 4 |
| Pin 27 | D3 — Digital output bit 3 |
| Pin 28 | D2 — Digital output bit 2 |
| Pin 29 | D1 — Digital output bit 1 |
| Pin 30 | D0 — Digital output bit 0 (LSB) |
| Pin 31 | DGND — Digital ground |
| Pin 32 | DVDD — Digital 3.3V supply |
| Pin 33 | OE — Output enable (active low) |
| Pin 34 | PD — Power-down input |
| Pin 35 | GND — Ground |
| Pin 36 | GND — Ground |
| Pin 37 | GND — Ground |
| Pin 38 | GND — Ground |
| Pin 39 | GND — Ground |
| Pin 40 | GND — Ground |
Typical Applications
MAX12553ETL+G3U is suitable for 6 applications: IF and Baseband Digitizing in Wireless Infrastructure, Medical Ultrasound Beamformer Receivers, Portable Instrumentation and Data Acquisition, CCD and CMOS Image Sensor Digitizing, Multichannel Data Acquisition Systems, Communications Test Equipment.
IF and Baseband Digitizing in Wireless Infrastructure
The MAX12553's 14-bit resolution and 65Msps sampling rate make it well suited for IF and baseband digitizing in wireless infrastructure receivers. With the internal 2.048V reference and fully differential T/H input, the device directly digitizes 10-30MHz IF signals from SAW filter outputs with 70+dB SNR and excellent spurious-free dynamic range. The wide input bandwidth and differential input stage reject common-mode noise from switching power supplies in the radio unit, while the 3.3V single-supply operation simplifies power-rail design. Designers can place the MAX12553 immediately after a 50-ohm matching network and a differential transformer, eliminating an IF pre-amplifier stage in cost-sensitive pico-cell and femtocell designs. The internal duty-cycle equalizer compensates for non-50% clock duty cycles from the radio's baseband FPGA, simplifying clock distribution.
Recommended
Medical Ultrasound Beamformer Receivers
The 14-bit dynamic range and 65Msps throughput of the MAX12553 suit the per-channel digitization stage of medical ultrasound beamformers, where hundreds of channels digitize returned echoes at 10-40Msps each. The MAX12553's low input-referred noise and excellent common-mode rejection preserve the small echo signals in the presence of switching noise from the transmit pulser. The 40-pin TQFN package (6mm x 6mm) is small enough for high-density array layouts, and the exposed paddle provides a low-impedance thermal path for sustained multi-channel operation. Designers commonly pair this ADC with an 8-channel analog front-end LNA/VGA such as the MAX2082 and a high-density FPGA for beamforming, with the MAX12553 producing digital beamformed data on its 14-bit parallel CMOS output bus at rates up to 910Mb/s aggregate.
Recommended
Portable Instrumentation and Data Acquisition
The 3.3V single-supply operation, 14-bit resolution, and 65Msps sampling rate make the MAX12553 a strong fit for portable oscilloscopes, spectrum analyzers, and handheld instrumentation. Its low power consumption relative to 5V ADCs extends battery life in field-portable instruments, while the differential input accepts the direct output of active probe attenuators and AC-coupled front ends. The internal 2.048V reference removes the need for an external reference IC, reducing the BOM for cost-sensitive instruments. The 14-bit code width delivers 84dB theoretical dynamic range, which combined with the analog front-end gain stage provides sufficient vertical resolution for a 7-bit equivalent DMM display plus substantial headroom. Designers can build a 2-channel interleaved 130Msps front end using two MAX12553s clocked in quadrature, doubling the bandwidth without redesigning the analog path.
Recommended
CCD and CMOS Image Sensor Digitizing
The MAX12553's wide input bandwidth and differential T/H amplifier make it well suited for digitizing the analog outputs of CCD and CMOS image sensors in machine vision and scientific cameras. The differential input rejects common-mode noise from the image sensor's switching bias circuits, while the 14-bit resolution preserves the full dynamic range of high-end CCDs used in spectroscopy and microscopy. The internal duty-cycle equalizer and flexible clock input accept the camera timing generator's pixel clock, simplifying the digital interface. The 40-pin TQFN package fits the compact PCBs of line-scan and area-scan cameras, and the 3.3V single supply can be derived from the camera's existing 5V rail via a small buck regulator. For color cameras, three MAX12553s can digitize the RGB channels simultaneously at the pixel clock rate.
Recommended
Multichannel Data Acquisition Systems
The MAX12553's CMOS-compatible parallel digital output simplifies the interface to FPGAs in high-channel-count data acquisition systems used in industrial test, vibration analysis, and structural health monitoring. A single MAX12553 per channel lets designers build modular acquisition boards that scale from 4 to 64 channels by adding ADC boards, all synchronized to a common reference clock. The 14-bit resolution and 65Msps throughput per channel deliver 910Mb/s aggregate digital bandwidth, which modern low-cost FPGAs handle directly without external memory buffers for short acquisitions. The exposed paddle and low thermal resistance of the 40-pin TQFN package support operation in sealed industrial enclosures with limited airflow. Designers should use the internal duty-cycle equalizer to relax clock-distribution tolerances across the backplane.
Recommended
Communications Test Equipment
Communications test equipment such as cable modem bank analyzers, set-top box testers, and protocol analyzers benefit from the MAX12553's 65Msps sampling rate and 14-bit dynamic range. The differential input accepts direct-coupled or transformer-coupled signals from RF down-converter IF outputs, while the 3.3V supply and small TQFN-40 footprint enable dense multi-port test fixtures. The internal 2.048V reference supports QAM-256 constellation decoding with the 30+ dB SNR required for low bit-error-rate measurements. The 14-bit parallel CMOS output is easy to interface with mid-range FPGAs for symbol decoding, error vector magnitude (EVM) computation, and BER measurement. Production test racks can use the MAX12553 in a shared-clock configuration to digitize multiple ports in parallel, keeping the per-port BOM low while preserving measurement quality.
Recommended
Recommended Products Summary
Engineering reference data for MAX12553ETL+G3U — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MAX12553ETL+ | MAX12553ETL+TG3U | MAX12554ETL+ | MAX12555ETL+ | MAX1209ETL+TG3U | MAX12528ETK+ |
|---|---|---|---|---|---|---|---|
| Package | 40-pin TQFN (HVQCCN), 6x6mm | 40-pin TQFN (HVQCCN) - same | 40-pin TQFN (HVQCCN) - same | 40-pin TQFN (HVQCCN) - same | 40-pin TQFN (HVQCCN) - same | 40-pin TQFN (HVQCCN) - same | 68-pin TQFN (TQFN-68) - different |
| Brand | Analog Devices (Maxim Integrated) | Analog Devices - same | Analog Devices - same | Analog Devices - same | Analog Devices - same | Analog Devices - same | Analog Devices - same |
| Resolution | 14 bit | 14 bit | 14 bit | 14 bit | 14 bit | 14 bit | 14 bit |
| Sampling Rate | 65 Msps | 65 Msps | 65 Msps | 80 Msps (+23%) | 95 Msps (+46%) | 65 Msps | 80 Msps |
| Supply Voltage | 3.3 V single | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V |
| Number of Channels | 1 | 1 | 1 | 1 | 1 | 1 | 2 (dual) |
| Internal Reference | 2.048 V bandgap | 2.048 V | 2.048 V | 2.048 V | 2.048 V | 2.048 V | 2.048 V |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
Key Differentiators
- Drop-in 80Msps upgrade path on the same PCB footprint (vs MAX12554ETL+)
- Lower price point than 80Msps and 95Msps family members (vs MAX12555ETL+)
- Single 3.3V supply eliminates the need for 5V analog rail (vs Older 5V ADCs (e.g., AD9225, AD9245))
Design Notes
Solder the exposed paddle (EP) of the 40-pin TQFN package to a continuous ground pour with at least 5 thermal vias (0.3mm drill, 1mm pitch) directly under the paddle. The EP is the primary heat-dissipation path and the lowest-impedance ground return; without proper EP soldering, junction temperature may rise and degrade INL/DNL performance. Place 0.1uF X7R ceramic decoupling capacitors within 2mm of each AVDD and DVDD pin, with 10uF bulk capacitors on the opposite side of the board directly beneath the device.
Keep analog and digital ground returns separate on the PCB and join them at a single point beneath the MAX12553 exposed paddle. Route the 14-bit digital output bus (D0-D13) with matched trace lengths and 50-ohm characteristic impedance to the FPGA, and place 33-ohm series damping resistors at the ADC end to suppress digital-edge reflections. Keep clock traces (CLKP, CLKN) short, length-matched, and routed away from the digital output bus to avoid coupling clock noise into the data outputs.
Drive the differential clock inputs (CLKP, CLKN) with a low-jitter LVDS or PECL source; clock jitter above 1ps RMS will degrade SNR by approximately 20*log10(2*pi*FIN*TJITTER) dB. At a 30MHz input and 65Msps sampling rate, allow no more than 5ps RMS total clock jitter to preserve the rated 70+dB SNR. If the upstream clock source is single-ended, use an external balun or transformer to convert to differential drive.
Do not leave the analog inputs (INP, INN) floating; if the analog front-end is DC-coupled, the input common-mode voltage is set by the COM pin output and should be bypassed with a 0.1uF capacitor. Avoid placing noisy digital traces (FPGA configuration, switching power inductors) directly above or below the analog input traces to prevent capacitive coupling. Use a low-ESR 10uF ceramic capacitor on REFOUT if the internal reference is selected; external reference mode requires a low-noise buffer capable of sourcing 1mA.
Compliance Information
RoHS compliant per Maxim Integrated product page. Industrial temperature grade (-40C to +85C). Not AEC-Q100 qualified - this is a commercial/industrial grade part, not automotive.
