Overview
The MAX1402EAI+T, produced by Analog Devices Inc./Maxim Integrated, is a low-power, multichannel, serial-output analog-to-digital converter (ADC). This device is designed for high accuracy and low power consumption, making it suitable for a variety of applications. The MAX1402 uses a sigma-delta modulator with a digital decimation filter to achieve 16-bit accuracy at an output data rate of up to 480 samples per second (sps). It operates from a +5V supply and features matched 200µA current sources for sensor excitation.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 18-bit |
| Accuracy | 16-bit with no missing codes to 480sps |
| Quiescent Current | 250µA (operating mode), 2µA (power-down mode) |
| Supply Voltage | +5V |
| Input Channels | 3 fully differential or 5 pseudo-differential |
| Gain Range | +1V/V to +128V/V |
| DC Offset Compensation | Up to 117% of the selected full-scale range |
| Package Type | 28-pin SSOP |
| Master Clock Frequency | 2.4576MHz or 1.024MHz |
Key Features
- 18-bit resolution, sigma-delta ADC with 16-bit accuracy and no missing codes to 480sps
- Low quiescent current: 250µA (operating mode) and 2µA (power-down mode)
- Matched on-board current sources (200µA) for sensor excitation
- Three fully differential or five pseudo-differential signal input channels
- User-selectable decimation factor for adjustable conversion resolution and output data rate
- Excellent line rejection without further post-filtering when used with specified master clock frequencies
Applications
- Portable Industrial Instruments
- Portable Weigh Scales
- Loop-Powered Systems
- Pressure Transducers
Q & A
- What is the resolution of the MAX1402 ADC?
The MAX1402 has an 18-bit resolution. - What is the maximum accuracy of the MAX1402?
The MAX1402 achieves 16-bit accuracy with no missing codes up to 480sps. - What is the quiescent current of the MAX1402 in operating and power-down modes?
The quiescent current is 250µA in operating mode and 2µA in power-down mode. - What is the supply voltage for the MAX1402?
The MAX1402 operates from a +5V supply. - How many input channels does the MAX1402 have?
The MAX1402 has three fully differential or five pseudo-differential input channels. - What is the gain range of the input channels?
The gain range is from +1V/V to +128V/V. - Can the MAX1402 compensate for DC offset?
Yes, it can compensate for an input-referred DC offset up to 117% of the selected full-scale range. - What package type is the MAX1402 available in?
The MAX1402 is available in a 28-pin SSOP package. - What are the supported master clock frequencies for the MAX1402?
The supported master clock frequencies are 2.4576MHz or 1.024MHz. - What are some common applications of the MAX1402?
Common applications include portable industrial instruments, portable weigh scales, loop-powered systems, and pressure transducers.
