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MAX11259
24-Bit, 6-Channel, 16ksps, 6.2nV/√Hz PGA,
2
Delta-Sigma ADC with I C Interface
General Description
Benefits and Features
The MAX11259 is a 6-channel, 24-bit delta-sigma ADC
that achieves exceptional performance while consuming
very low power. Sample rates up to 16ksps allow preci-
sion DC measurements. The MAX11259 communicates
via an I C-compatible serial interface and is available in a
small (3mm x 3mm) WLP package.
● High Resolution for Industrial Applications that
Require a Wide Dynamic Range
• 133dB SNR at 50sps
• 124dB SNR at 1000sps
2
● Longer Battery Life for Portable Applications
• 2.2mA Operating Mode Current
• 1μA Sleep Current
The MAX11259 offers a 6.2nV/ Hz noise programmable
√
gain amplifier (PGA) with gain settings from 1x to 128x.
The integrated PGA provides isolation of the signal inputs
from the switched capacitor sampling network. The PGA
also enables the MAX11259 to interface directly with high-
impedance sources without compromising available dy-
namic range.
● Single or Split Analog Supplies Provide Input Voltage
Range Flexibility
• 2.7V to 3.6V (Single Supply) or ±1.8V (Split Supply)
● Enables System Integration
• Low Noise, 6.2nV/ Hz PGA with Gains of 1, 2, 4, 8,
√
16, 32, 64, 128
The MAX11259 operates from a single 2.7V to 3.6V ana-
log supply, or split ±1.8V analog supplies, allowing the
analog input to be sampled below ground. The digital sup-
ply range is 1.7V to 2.0V or 2.0V to 3.6V, allowing commu-
nication with 1.8V, 2.5V, 3V, or 3.3V logic.
• 6-Channel, Fully Differential Input
● Enables On-Demand Device and System Gain and
Offset Calibration
• User-Programmable Offset and Gain Registers
● Robust Performance in a Small Package
• -40°C to +125°C Operating Temperature Range
• WLP Package, 3mm x 3mm (6 x 6 Ball Array)
Applications
● Wearable Electronics
● Weigh Scales
● Pressure Sensors
● Battery-Powered Instrumentation
19-7749; Rev 1; 10/20
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