Analog Devices Inc./Maxim Integrated MAX19515ETM+

Overview

The MAX19515ETM+ from Maxim Integrated is a dual-channel, 10-bit analog-to-digital converter (ADC) delivering 65Msps sampling rate with 60.1dBFS SNR and 82dBc SFDR at 70MHz input frequency. It operates from a 1.8V analog supply (or 2.5–3.3V via integrated regulator), supports DC-coupled RF/IF inputs across 0.4V–1.4V common-mode range, and targets high-performance communications receivers and medical ultrasound front-ends.

For engineers reviewing the MAX19515ETM+ datasheet, MAX19515ETM+ pinout, MAX19515ETM+ application, or MAX19515ETM+ equivalent, key selection considerations include its dual parallel/multiplexed CMOS output bus, programmable clock divider (DIV1/DIV2/DIV4), SPI-configurable data format (two's complement/gray/offset binary), and 48-pin TQFN package with exposed pad for thermal management.

Technical Context

The MAX19515ETM+ employs a 10-stage fully differential pipelined architecture with 9-cycle latency, enabling high-speed conversion while maintaining low power. Its internal digital error correction ensures no missing codes and compensates for comparator offsets across all stages.

It supports both differential and single-ended analog inputs, differential or single-ended clock inputs, and features programmable common-mode reference (0.45V–1.35V in 0.15V steps) and on-chip 1.25V ±60ppm/°C reference. The device includes DCLK outputs and configurable output timing to simplify high-speed digital interface design.

Key Specifications

Pinout & Package

Package: 48-pin thin QFN (7mm × 7mm × 0.8mm) with exposed pad (EP), rated for -40°C to +85°C operation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-channel, 10-bit, 65Msps ADC applications.

Compared with MAX19515ETM+, the MAX19516ETM+ offers higher speed at the cost of power and thermal density, while the ADS5272IPFP trades supply flexibility and ease of DC-coupled interfacing for marginally better SFDR and vendor-specific toolchain integration.

Availability

MAX19515ETM+ is available at Aetrix Electronics and suitable for cellular infrastructure, medical imaging, and portable test equipment requiring stable component supply, RoHS-compliant packaging, and extended temperature support (-40°C to +85°C).

Supply support for MAX19515ETM+ 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) designs high-performance analog and mixed-signal ICs for communications, computing, and industrial applications.

The MAX19515ETM+ belongs to Maxim's high-speed ADC product line, engineered specifically for zero-IF and high-IF sampling in wireless infrastructure and medical ultrasound systems where dynamic range, power efficiency, and DC-coupled interface simplicity are critical.

FAQ

What is the maximum analog input frequency supported by the MAX19515ETM+?

The MAX19515ETM+ specifies a full-power bandwidth of 850MHz, meaning it maintains full-scale amplitude response up to that frequency. Dynamic performance remains usable beyond 400MHz, with verified 60.1dBFS SNR and 82dBc SFDR at 70MHz input-making it suitable for high-IF sampling in microwave and cellular receivers. Performance degrades gradually above 175MHz, as shown in typical operating curves.

Does the MAX19515ETM+ support DC-coupled analog inputs?

Yes, the MAX19515ETM+ supports DC-coupled analog inputs via its wide 0.4V to 1.4V programmable common-mode voltage range. Internal 2kΩ resistors can be enabled through SPI registers to supply input bias current, and the common-mode reference (CMA/CMB) is adjustable from 0.45V to 1.35V in 0.15V steps-enabling direct connection to DC-coupled amplifiers or transformer center taps without external level-shifting circuitry.

How does the MAX19515ETM+ handle clock input configurations?

The MAX19515ETM+ accepts both differential (CLK+/CLK-) and single-ended (CLK+ referenced to GND with CLK- grounded) clock inputs. In differential mode, it is self-biased with 10kΩ input resistance and supports 0.4–2.0VP-P swing. Clock division (DIV1/DIV2/DIV4) is programmable via SPI or pin-strapped using SCLK/DIV when SPEN is high, allowing system clock flexibility without external dividers.

What digital output interface options does the MAX19515ETM+ provide?

The MAX19515ETM+ offers dual parallel CMOS outputs (D0A–D9A and D0B–D9B) or a single multiplexed parallel CMOS bus, selectable via SPI or pin-strapping. Output data format (two's complement, gray code, or offset binary), bit order (reversible), and internal CMOS termination are all programmable. DCLKA/DCLKB provide source-synchronous clocks aligned to each channel's data for reliable high-speed capture.

Is the MAX19515ETM+ compatible with 1.8V-only digital I/O systems?

Yes, the MAX19515ETM+ supports OVDD from 1.8V to 3.5V, making it fully compatible with 1.8V FPGA or ASIC interfaces. Its CMOS outputs deliver VOH ≥ (VOVDD – 0.2V) and VOL ≤ 0.2V at 200µA load, meeting standard 1.8V logic thresholds. Digital supply current is 13mA typical at 65Msps with CL = 10pF, scalable with load capacitance and voltage.