Overview
The MAX1338ETN+ is a 14-bit, 4-channel, software-programmable, multiranging, simultaneous-sampling analog-to-digital converter (ADC) produced by Analog Devices Inc./Maxim Integrated. This device is designed to offer high precision and flexibility, making it suitable for a variety of applications that require simultaneous sampling of multiple analog inputs.
The MAX1338 features four fully differential input channels, each with independent track-and-hold (T/H) circuitry, allowing for simultaneous sampling of all channels. The input ranges are software-programmable, offering options of ±10V, ±5V, ±2.5V, and ±1.25V, with fault tolerance up to ±17V. The device operates with a 14-bit parallel interface and supports both internal and external clock and reference options.
The MAX1338 is powered by a +5V supply for analog inputs and digital core, and a +2.7V to +5.25V supply for digital I/O lines. It includes power-saving modes such as standby and shutdown, which significantly reduce power consumption during idle periods.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Number of Bits | Resolution of the ADC | 14 bits |
| Number of Channels | Number of input channels | 4 |
| Input Type | Type of input channels | Fully differential |
| Input Ranges | Software-programmable input ranges | ±10V, ±5V, ±2.5V, ±1.25V |
| Fault Tolerance | Maximum voltage tolerance for inputs | ±17V |
| Aperture Delay | Delay of the track-and-hold circuits | 16ns |
| Aperture-Delay Matching | Matching between track-and-hold circuits | 100ps |
| Sample Rate | Maximum sample rate per channel | 150ksps (600ksps for all four channels) |
| Supply Voltage (Analog) | Voltage supply for analog inputs and digital core | +5V |
| Supply Voltage (Digital I/O) | Voltage supply for digital I/O lines | +2.7V to +5.25V |
| Operating Temperature | Temperature range for operation | -40°C to +85°C |
| Package | Type and dimensions of the package | 56-pin thin QFN (8mm x 8mm x 0.8mm) |
Key Features
- Simultaneous sampling of four fully differential input channels with independent track-and-hold (T/H) circuitry.
- Software-programmable input ranges: ±10V, ±5V, ±2.5V, and ±1.25V.
- Fault tolerance up to ±17V on input channels.
- 14-bit parallel interface for output data.
- Internal clock and 2.5V internal reference, with options for external clock and reference.
- Power-saving modes: standby and shutdown, reducing quiescent current to 4mA (typ) and sleep current to less than 10µA (typ), respectively.
- Dynamic performance: SNR of 77dB, SINAD of 76dB, SFDR of 98dBc, and THD of -83dBc at 10kHz input.
- DC performance: INL of ±2 LSB, DNL of ±1 LSB, offset error of ±4 LSB, and gain error of ±0.1% FSR.
Applications
- Multiple-Channel Data Recorders
- Vibration Analysis
- Motor Control: 3-Phase Voltage, Current, and Power Measurement
- Optical Communication Equipment
Q & A
- What is the resolution of the MAX1338 ADC?
The MAX1338 ADC has a resolution of 14 bits.
- How many input channels does the MAX1338 have?
The MAX1338 has four simultaneously sampled, fully differential input channels.
- What are the software-programmable input ranges for the MAX1338?
The input ranges are ±10V, ±5V, ±2.5V, and ±1.25V.
- What is the fault tolerance of the input channels?
The input channels have fault tolerance up to ±17V.
- What is the maximum sample rate per channel for the MAX1338?
The maximum sample rate per channel is 150ksps (600ksps for all four channels).
- What are the power supply requirements for the MAX1338?
The device operates from a +5V supply for analog inputs and digital core, and a +2.7V to +5.25V supply for digital I/O lines.
- What are the power-saving modes available in the MAX1338?
The MAX1338 features standby and shutdown modes to reduce power consumption.
- What is the operating temperature range for the MAX1338?
The device operates over the extended -40°C to +85°C temperature range.
- What is the package type and dimensions for the MAX1338?
The MAX1338 is available in a 56-pin thin QFN package (8mm x 8mm x 0.8mm).
- What are some typical applications for the MAX1338?
Typical applications include multiple-channel data recorders, vibration analysis, motor control, and optical communication equipment.
