Analog Devices Inc./Maxim Integrated MAX19516ETM+T

Overview

The MAX19516ETM+T from Maxim Integrated is a dual-channel, 10-bit analog-to-digital converter (ADC) delivering 100Msps sampling rate with 60dBFS 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 analog inputs over 0.4V–1.4V common-mode range, and targets high-frequency IF/RF sampling in communications receivers and medical imaging front-ends.

For engineers reviewing the MAX19516ETM+T datasheet, MAX19516ETM+T pinout, MAX19516ETM+T application, or MAX19516ETM+T equivalent, key selection considerations include its dual parallel CMOS output bus configuration, programmable clock divider (DIV1/DIV2/DIV4), selectable data format (two's complement/gray/offset binary), out-of-range indicators per channel, and 48-pin TQFN package with exposed pad for thermal management.

Technical Context

The MAX19516ETM+T employs a 10-stage fully differential pipelined architecture with 9-cycle latency, enabling high-speed conversion while maintaining low power. Its analog front-end accepts single-ended or differential inputs and clocks, with self-biased differential clock inputs or logic-level single-ended mode.

Digital interface flexibility includes SPI-controlled register programming for features like common-mode voltage (0.45V–1.35V in 0.15V steps), output timing, data format, and bit order reversal-or parallel pin-strapping via SPEN, CS, SCLK, and SDIN when SPI is disabled. Internal reference generation and external reference support (1.25V ±5%) provide system-level calibration options.

Key Specifications

Pinout & Package

The MAX19516ETM+T is housed in a 7mm × 7mm, 48-pin thin QFN package with exposed pad (EP), optimized for thermal dissipation in high-density RF layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX19515ETM+ and MAX19517ETM+, the MAX19516ETM+T delivers optimal balance of speed, power, and dynamic performance for mainstream 70–175MHz IF digitization-enabling drop-in compatibility within the same family while avoiding overdesign or underperformance.

Availability

The MAX19516ETM+T is available at Aetrix Electronics and suitable for cellular infrastructure, medical ultrasound, and portable instrumentation requiring stable component supply, RoHS-compliant packaging, and extended temperature operation (-40°C to +85°C).

Supply support for MAX19516ETM+T 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 precision analog, mixed-signal, and power management ICs for demanding industrial, communications, and medical applications.

The MAX19516ETM+T belongs to Maxim's high-speed ADC product line, engineered specifically for zero-IF and high-IF receiver architectures requiring low power, excellent SFDR, and flexible digital interfacing in compact form factors.

FAQ

What is the maximum input frequency supported by the MAX19516ETM+T before significant SNR degradation occurs?

The MAX19516ETM+T maintains usable performance up to 400MHz input frequency, with full-power bandwidth specified at 850MHz. At 175MHz input, typical SNR remains 59.7dBFS and SFDR stays above 80dBc-making it suitable for undersampling applications in L/S-band receivers. Performance plots confirm <1dB SNR loss from DC to 175MHz under standard conditions.

Does the MAX19516ETM+T support single-ended analog input configuration?

Yes, the MAX19516ETM+T supports both differential and single-ended analog inputs on each channel. When using single-ended mode, INA− and INB− are tied to the common-mode reference (CMA/CMB), and the input signal is applied to INA+ or INB+. Input resistance is 4kΩ and input capacitance is 1.2pF per pin, consistent across configurations.

How does the internal voltage regulator in the MAX19516ETM+T operate, and what supply voltages does it accept?

The MAX19516ETM+T integrates a self-sensing analog voltage regulator that automatically engages when AVDD is set between 2.5V and 3.3V, allowing operation from a single higher-voltage rail. When AVDD = 1.8V, the regulator is bypassed. The regulator maintains stable core biasing and improves PSRR, enabling interoperability with mixed-supply systems without external LDOs.

Can the MAX19516ETM+T be configured for multiplexed output mode without using the SPI interface?

Yes, the MAX19516ETM+T supports pin-strapped multiplexed output mode. With SPEN = high, the CS pin selects between dual parallel bus (CS = low) and single multiplexed bus (CS = high). No SPI communication is required-this hardware-selectable mode simplifies initialization in resource-constrained microcontroller-based systems.

What is the wake-up time from power-down mode for the MAX19516ETM+T, and how is it affected by reference configuration?

The MAX19516ETM+T requires 5ms wake-up time from shutdown mode when using the internal reference with CREFIO = 0.1µF (10τ time constant). Wake-up from standby mode is faster at 15µs. External reference configurations may alter settling time depending on source impedance and bypassing, but the datasheet specifies 5ms as the guaranteed maximum for internal reference startup.