Analog Devices Inc./Maxim Integrated MAX1308ECM+T

MAX1308ECM+T 12-bit Simultaneous Sampling ADC Product Summary

The MAX1308ECM+T from Analog Devices Inc./Maxim Integrated delivers eight channels of precise, simultaneous analog-to-digital conversion—providing a robust solution for engineers working on multichannel measurement systems. Designed as a 12-bit successive approximation register (SAR) ADC and housed in a compact 48-LQFP (7x7 mm) package, the MAX1308ECM+T offers ±5V analog input range with ±16.5V fault tolerance, making it a strong candidate for demanding industrial and data acquisition environments. Its per-channel throughput and reliable conversion quality make it indispensable where phase alignment and channel synchronicity are paramount.

MAX1308ECM+T Functional Blocks and System Architecture

At its core, the MAX1308ECM+T utilizes a SAR conversion architecture, combining eight fully independent track-and-hold circuits with a single multiplexed ADC engine. Each input channel benefits from its own dedicated T/H stage, which guarantees true simultaneous acquisition—critical in vibration analysis, power quality monitoring, and multi-phase motor control. The device features a high-speed, 12-bit parallel data interface that streamlines communication with host processors or FPGAs. This architecture allows flexible configuration and the ability to trigger all eight channels with deterministic phase alignment.

MAX1308ECM+T Input Specifications and Signal Range Parameters

MAX1308ECM+T supports eight single-ended analog inputs, with each channel accepting signals between -5V and +5V. The front-end is protected against overvoltage conditions up to ±16.5V, offering robust system tolerance against input transients or wiring mishaps. Internal input resistances are optimized (8.66 kΩ typical), and input capacitance is set at 15 pF, supporting high analog bandwidth and minimal signal distortion even at elevated frequencies.

MAX1308ECM+T Data Conversion Capabilities and Interface Information

For high-throughput applications, the MAX1308ECM+T offers simultaneous sampling rates up to 456 ksps per channel (when all eight channels are active), with the option to scale up sampling rates as the channel count decreases (such as 1075 ksps for a single channel). The device achieves a typical signal-to-noise ratio (SNR) of 71 dB and a total harmonic distortion (THD) of -86 dBc at its rated input frequencies, ensuring high linearity and low noise. Communication is facilitated by a 12-bit, bidirectional parallel data bus with fast access timing and tri-state outputs; this integration helps reduce data latency and makes the device suitable for time-critical measurements.

MAX1308ECM+T Reference Selections and Clock Operation Methods

The MAX1308ECM+T is engineered for flexibility in system integration, offering both internal (+2.5V) and external reference voltage options (accepting 2.0V to 3.0V), which allows engineers to optimize for precision, noise, or power constraints. The device supports both internal (15 MHz nominal) and external clocking up to 20 MHz, accommodating a wide range of system architectures and timing requirements. Key register and conversion strobes are present for precise software control and hardware integration.

MAX1308ECM+T Electrical, Package, and Performance Specifications

Operating from a 4.75V–5.25V analog supply and a 2.7V–5.25V digital supply, the MAX1308ECM+T maintains low power consumption (analog: 54–60 mA; digital: 1.3–2.6 mA typical for all channels). It is rated for operation across the full industrial temperature range (-40°C to +85°C) and offers a maximum specified power dissipation of 1818.2 mW (with appropriate derating above +70°C). The package footprint (48-LQFP) enables high channel density in compact form factors, making the part suitable for space-constrained designs.

MAX1308ECM+T Power, Supply, and Thermal Management Guidelines

With on-chip shutdown and power-saving features, the MAX1308ECM+T addresses power efficiency for multi-channel measurement solutions. Analog and digital supplies are independent, allowing for noise isolation strategies and simplified board layout. The device is RoHS3 compliant, offers moisture sensitivity level 1 (unlimited shelf life under moisture protection), and supports standard assembly processes—including reflow soldering to 260°C.

MAX1308ECM+T Evaluation Board and Development Resources

Development with the MAX1308ECM+T is streamlined through its compatible evaluation platforms, notably the MAX1304-MAX1306 series evaluation kits. These kits provide immediate access for validation of performance parameters, rapid prototyping, and signal chain assessments, helping engineers quickly integrate the ADC into larger systems.

Industrial and Instrumentation Applications of MAX1308ECM+T

The MAX1308ECM+T excels in applications requiring simultaneous multi-channel digitization with wide input dynamic range and robust fault protection. Typical use cases include synchrophasor measurement in power grids, vibration and waveform analysis, multi-phase motor and power control, SIN/COS encoders for precision positioning, and advanced power-factor monitoring. The device's fast, simultaneous conversion and high channel isolation make it a natural fit in environments where timing skew or channel crosstalk could otherwise impair measurement integrity.

Alternative or Substitute Models for MAX1308ECM+T

Engineers seeking alternative configurations or expanded input ranges can consider related devices within the same Maxim Integrated family:

MAX1304ECM+ (0 to +5V, 4 channels)

MAX1305ECM+ (0 to +5V, 2 channels)

MAX1306ECM+ (0 to +5V, 8 channels)

MAX1309ECM+ and MAX1310ECM+ (±5V, 4/2 channels, respectively)

MAX1312ECM+, MAX1313ECM+, and MAX1314ECM+ (±10V, 8/4/2 channels)

Selection between these options depends on channel count, analog input range, and target application requirements; all share core performance characteristics and integration options with the MAX1308ECM+T.

Conclusion

: Selecting MAX1308ECM+T for precision multichannel analog acquisition

With its blend of high simultaneous throughput, robust input protection, flexible reference and clocking options, and comprehensive software/hardware interface, the MAX1308ECM+T stands out as a high-performance ADC for engineers and procurement professionals developing next-generation measurement and control systems. Careful analysis of channel requirements, signal characteristics, and board-level constraints will ensure that the MAX1308ECM+T—or its series counterparts—delivers optimal performance in complex, noise-sensitive, or mission-critical applications.