MAX11259：24-Bit, 6-Channel, 16ksps, 6.2nV/√Hz PGA, Delta-Sigma ADC with I²C Interface

24-Bit Delta-Sigma ADC Offers 10x Less Power with Superior Noise Performance

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 precision DC measurements. The MAX11259 communicates via an I2C-compatible serial interface and is available in a small (3mm x 3mm) WLP package. The MAX11259 offers a 6.2nV/ 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 dynamic range. The MAX11259 operates from a single 2.7V to 3.6V analog supply, or split ±1.8V analog supplies, allowing the analog input to be sampled below ground. The digital supply range is 1.7V to 2.0V or 2.0V to 3.6V, allowing communication with 1.8V, 2.5V, 3V, or 3.3V logic.

Key Features

High Resolution for Industrial Applications that Require a Wide Dynamic Range
- 133dB SNR at 50sps
- 124dB SNR at 1000sps
Longer Battery Life for Portable Applications
- 2.2mA Operating Mode Current
- 1µA Sleep Current
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
- 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

MAX11259: Functional Diagram

Applications/Uses

Battery-Powered Instrumentation
Pressure Sensors
Wearable Electronics
Weigh Scales

DataSheet

title	Download file
MAX11259 Data Sheet	MAX11259.pdf

Parametrics

Part Number	Resolution (bits)	Input Chan.	Conv. Rate (ksps)	ADC Architecture	Data Bus	Diff/S.E. Input	External V_REF (V)	External V_REF (V)	Unipolar V_IN (V)	Bipolar V_IN (±V)	SNR (dB)	Package/Pins	Budgetary Price
Part Number	ADC	Input Chan.	max	ADC Architecture	Data Bus	Diff/S.E. Input	min	max	max	max	SNR (dB)	Package/Pins	See Notes
MAX11259	24	6	16	Sigma-Delta	I2C	Diff. Only	0	3.6	3.6	1.8	133	WLP/36	$7.91 @1k

Design kits & evaluation modules

Ordering Information

Part Number	Status	Package	Temp	RoHS
MAX11259AWX+	Active	WLP,;36 pin;WLP;	-40°C to +125°C	See data sheet
MAX11259AWX+T	Active	WLP,;36 pin;WLP;	-40°C to +125°C	See data sheet
MAX11259SYS1#	Active	EVKIT;	-40°C to +85°C	See data sheet

MAX11259.pdf MAX11259