Analog Devices Inc./Maxim Integrated MAX1420CCM

Overview

MAX1420CCM from Maxim Integrated is a 12-bit, 60Msps analog-to-digital converter optimized for low-power, high-dynamic-performance imaging and digital communications systems. It operates from a single 3.3V supply, consumes 221mW, features a fully differential 400MHz small-signal input bandwidth, and integrates a precision 2.048V internal bandgap reference - enabling direct use in medical ultrasound front-ends and IF digitization.

For engineers reviewing the MAX1420CCM datasheet, MAX1420CCM pinout, MAX1420CCM application, or MAX1420CCM equivalent, this page delivers verified technical context, real-world timing behavior (7-cycle latency), differential input interface constraints, power-down mode trade-offs (2mA reference shutdown / 10µW full shutdown), and validated alternatives for signal chain design continuity.

Technical Context

The MAX1420CCM implements a 12-stage pipelined ADC architecture with digital error correction to ensure no missing codes and ±0.5LSB DNL over temperature. Its track-and-hold amplifier supports both differential and single-ended analog inputs, with common-mode level set at AVDD/2 and ±1.024V differential full-scale range when using the internal reference.

It accepts CMOS-compatible differential or single-ended clock inputs up to 60MHz, samples on the rising edge of CLK, and delivers offset-binary parallel outputs with 7-clock-cycle pipeline latency. Reference configuration supports three modes: internal (2.048V), buffered external (via REFIN), or unbuffered external (REFP/REFN/CML driven externally with REFIN = AGND).

Key Specifications

Pinout & Package

MAX1420CCM is housed in a 48-pin TQFP package (7mm × 7mm × 1.4mm), RoHS-compliant and rated for 0°C to +70°C operation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX1420CCM, MAX1421CCM offers identical interface and layout compatibility at reduced speed and power (175mW), while ADS5463IPFP delivers higher performance at significantly greater power, board area, and design complexity - making MAX1420CCM the optimal balance for mid-tier imaging and communications digitizers.

Availability

MAX1420CCM is available at Aetrix Electronics and suitable for medical ultrasound imaging, CCD pixel processing, IR focal plane arrays, and radar IF digitization requiring stable component supply across commercial temperature ranges.

Supply support for MAX1420CCM 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 demanding industrial, medical, and communications applications.

The MAX1420CCM belongs to Maxim's high-speed precision ADC product line, designed specifically for low-power, wideband digitization in imaging and digital communications systems where dynamic performance and thermal efficiency are critical.

FAQ

What is the operating temperature range for the MAX1420CCM?

The MAX1420CCM is specified for commercial-grade operation from 0°C to +70°C. This range is explicitly defined in the Ordering Information table and confirmed in the Absolute Maximum Ratings section of the datasheet. The 'CCM' suffix denotes this temperature grade, distinguishing it from the extended industrial-grade MAX1420ECM (-40°C to +85°C). All electrical characteristics for MAX1420CCM are guaranteed within this 0°C to +70°C window.

Does the MAX1420CCM require an external reference, or does it include one?

The MAX1420CCM integrates a precision 2.048V internal bandgap reference, eliminating the need for an external reference in most applications. This internal reference sets the full-scale range and is factory-trimmed to ±0.1%FSR accuracy with ±100ppm/°C temperature coefficient. External references are optional and supported via REFIN, REFP, REFN, and CML pins for applications demanding higher accuracy or different input voltage ranges.

What is the pipeline latency of the MAX1420CCM, and how does it affect system timing?

The MAX1420CCM has a fixed pipeline latency of seven clock cycles - meaning the digital output corresponding to a given analog sample appears seven CLK periods after that sample is taken. This deterministic latency is critical for synchronizing FPGA-based digital signal processing or triggering downstream actions. The timing diagram in Figure 6 of the datasheet confirms this behavior, and it applies uniformly across all operating conditions and input frequencies.

Can the MAX1420CCM accept single-ended analog inputs, or is differential input mandatory?

The MAX1420CCM supports both differential and single-ended analog inputs. While its fully differential input stage is optimized for best SFDR and CMRR, the datasheet explicitly states that "the fully-differential input stage … may be operated with single-ended inputs." For single-ended use, INN should be biased to AVDD/2 (via CML), and INP driven with the signal - though differential drive is strongly recommended to achieve the published 67dB SNR and 72dBc SFDR performance.

How does the power-down functionality work on the MAX1420CCM?

The MAX1420CCM offers two distinct power-down modes controlled by the PD pin. In reference power-down mode (PD = high, internal reference disabled), analog supply current drops by ~2mA. In full shutdown mode (PD = high, with additional sequencing), total device current falls to ≤20µA - reducing power dissipation to ≤10µW. Both modes retain register state and allow fast wake-up, making them suitable for burst-mode acquisition in portable diagnostic equipment.