Analog Devices Inc./Maxim Integrated MAX1420ECM+D

Overview

MAX1420ECM+D from Maxim Integrated is a 12-bit, 60Msps analog-to-digital converter optimized for high-dynamic-performance, low-power imaging and digital communications systems. It features a fully-differential pipelined architecture, 3.3V single-supply operation, 400MHz small-signal input bandwidth, and an internal 2.048V precision bandgap reference - enabling direct digitization of IF/baseband signals in radar and ultrasound front-ends.

For engineers reviewing the MAX1420ECM+D datasheet, MAX1420ECM+D pinout, MAX1420ECM+D application, or MAX1420ECM+D equivalent, this page delivers verified technical context, real-world timing and noise performance data, package-specific layout guidance, and validated alternative options for industrial temperature-range ADC selection.

Technical Context

The MAX1420ECM+D implements a 12-stage, fully-differential pipelined ADC architecture with digital error correction to ensure no missing codes and ±0.5 LSB DNL across -40°C to +85°C. Its wideband track-and-hold amplifier supports 400MHz small-signal and 150MHz large-signal input bandwidths, enabling accurate sampling of high-frequency analog inputs beyond Nyquist.

It operates with parallel offset-binary CMOS-compatible outputs, 7-clock-cycle pipeline latency, and dual power-down modes: reference shutdown (reducing analog supply current by ~2mA) and full shutdown (10µW typical dissipation). Clock sampling occurs on the rising edge of CLK, with aperture jitter specified at 2ps RMS - critical for maintaining 66dB SNR at 15MHz input frequency.

Key Specifications

Pinout & Package

MAX1420ECM+D is housed in a 48-pin TQFP (7mm × 7mm, 1.4mm height) with exposed paddle for thermal enhancement. Pin assignments are validated per Maxim's Rev 1 (5/04) pin configuration diagram and functional description.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-speed, low-power ADC applications.

Compared with MAX1420ECM+D, MAX1421ECM+ offers drop-in replacement capability at lower speed and power, while ADS5271IPFP provides higher throughput and serial interface flexibility at the cost of increased complexity, power, and footprint - making MAX1420ECM+D optimal for space-constrained, single-supply, medium-bandwidth industrial digitizers.

Availability

MAX1420ECM+D is available at Aetrix Electronics and suitable for medical imaging equipment, industrial radar subsystems, and scientific CCD/IR camera designs requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX1420ECM+D includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Maxim Integrated (now part of Analog Devices) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, medical, and communications markets.

The MAX1420 belongs to Maxim's high-speed precision ADC product line, designed specifically for low-power, wideband digitization in imaging, radar, and instrumentation where dynamic range, timing accuracy, and thermal robustness are critical.

FAQ

What is the guaranteed operating temperature range for MAX1420ECM+D?

The MAX1420ECM+D is specified for continuous operation from -40°C to +85°C - the extended industrial temperature grade. All electrical characteristics, including SNR, SFDR, INL, and power consumption, are production-tested and guaranteed across this full range, making it suitable for outdoor, automotive under-hood, and medical equipment applications where ambient conditions vary widely. The MAX1420ECM+D maintains 66dB SNR at 15MHz even at +85°C.

Does MAX1420ECM+D require external reference components when using the internal 2.048V bandgap reference?

Yes - the MAX1420ECM+D requires external bypass capacitors on REFIN, REFP, REFN, and CML when using the internal reference. Per the datasheet, each node must be bypassed to AGND with a parallel combination of 0.22µF and 1nF ceramic capacitors. These capacitors stabilize the internal reference and minimize noise coupling; omitting them degrades SNR and introduces reference-related drift in the MAX1420ECM+D's full-scale accuracy.

Can MAX1420ECM+D accept single-ended analog inputs, or is differential input mandatory?

The MAX1420ECM+D supports both differential and single-ended analog inputs. Its fully-differential input stage allows single-ended drive via INP (with INN tied to AVDD/2 through a matched impedance network), provided common-mode voltage is maintained at AVDD/2 and input impedances are balanced. However, differential drive delivers superior rejection of even-order harmonics and common-mode noise - critical for achieving the MAX1420ECM+D's rated 66dB SNR and 72dB SFDR performance.

What is the pipeline latency of MAX1420ECM+D, and how does it affect system timing?

The MAX1420ECM+D has a fixed pipeline latency of seven clock cycles from sample (rising CLK edge) to valid output data on D0–D11. This deterministic delay enables precise timing alignment in FPGA-based digital signal processors and simplifies FIFO depth calculation in real-time streaming applications. For example, at 60MHz clock, latency equals 116.7ns - a value that must be accounted for in time-of-flight calculations in ultrasound or radar systems using the MAX1420ECM+D.

How does the power-down mode of MAX1420ECM+D reduce system power consumption?

The MAX1420ECM+D offers two distinct power-down modes: reference shutdown (PD = low, OE = high) reduces analog supply current by ~2mA, and full shutdown (PD = high) cuts total dissipation to 10µW. In full shutdown, the internal bandgap reference, pipeline stages, and digital outputs are disabled - allowing rapid wake-up (<1µs) for burst-mode acquisition. This dual-mode capability makes the MAX1420ECM+D highly efficient in portable or energy-constrained systems where idle periods occur between active sampling windows.