MAX11410 Datasheet, PDF (1/95 Pages) Maxim Integrated Products – 24-Bit Multi-Channel Low-Power

MAX11410
24-Bit Multi-Channel Low-Power
1.9ksps Delta-Sigma ADC with PGA
General Description
The MAX11410 is a low-power, multi-channel, 24-bit
delta-sigma ADC with features and specifications that are
optimized for precision sensor measurement.
The input section includes a low-noise programmable
gain amplifier (PGA) with very high input impedance and
available gains from 1x to 128x to optimize the overall
dynamic range. Input buffers provide isolation of the
signal inputs from the switched-capacitor sampling
network when the PGA is not in use, making the ADC
easy to drive even with high-impedance sources.
Several integrated features simplify precision sensor
applications. The programmable matched current sources
provide excitation for resistive sensors. An additional
current sink and current source aid in detecting broken
sensor wires. The 10-channel input multiplexer provides
the flexibility needed for complex, multi-sensor measurements.
GPIOs reduce isolation components and ease control of
switches or other circuitry.
When used in single-cycle mode, the digital filter settles
within a single conversion cycle. The available FIR digital
filter allows single-cycle settling in 16ms while providing
more than 90dB simultaneous rejection of 50Hz and 60Hz
line noise.
The integrated on-chip oscillator requires no external
components. If needed, an external clock source may be
used instead. Control registers and conversion data are
accessed through the SPI-compatible serial interface.
Applications
●● Sensor Measurement
●● Portable Instruments
●● Resistive Bridge Measurement
Benefits and Features
●● High Resolution And Low Noise For Signal Sources
With Wide Dynamic Range
• 24-Bit Resolution
• Programmable Gain Amplifier With 1, 2, 4, 8, 16,
32, 64, and 128 Gain Options
• 90dB Simultaneous 60Hz and 50Hz Power Line
Rejection
• 3ppm Typical INL with No Missing Codes
●● Optimized Features For More Efficient System
Design
• 10 Analog Inputs May be Used for Single-Ended/
Fully Differential in Any Combination
• Two Dedicated/One Shared Differential Voltage
Reference Inputs
• On-Demand Offset and Gain Self-Calibration
●● Low Power for Efficient Systems
• 2.7V to 3.6V Analog Supply Range
• 1.7V to 3.6V I/O Supply Range
• <1µA Sleep Mode
●● Standard SPI-Compatible Control Interface
●● Selectable Internal/External Oscillator
●● Operating Temperature Range from -40°C to +125°C
●● Small 28-Pin 4mm x 4mm TQFN Package:
Lead-Free & RoHS Compliant
Ordering Information appears at end of data sheet.
19-8513; Rev 0; 5/16