MAX11253：16-Bit, 6-Channel, 64ksps, 6.2nV/√Hz PGA, Delta-Sigma ADC with SPI Interface

16-Bit Delta-Sigma ADC Offers 4x Less Power with Superior Noise Performance

The MAX11253 is a 6-channel, 16-bit delta-sigma ADC that achieves exceptional performance while consuming very low power. Sample rates up to 64ksps allow precision DC measurements. The MAX11253 communicates via a SPI serial interface and is available in a small (5mm x 5mm) TQFN package. The MAX11253 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 MAX11253 to interface directly with high-impedance sources without compromising available dynamic range. The MAX11253 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
- 98dB 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
- TQFN Package, 5mm x 5mm

MAX11253: Functional Diagram

Applications/Uses

Analog I/O for Programmable Logic Controllers
Battery-Powered Instrumentation
Pressure Sensors
Weigh Scales

DataSheet

title	Download file
MAX11253 Data Sheet	MAX11253.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)	Package/Pins	Budgetary Price
Part Number	ADC	Input Chan.	max	ADC Architecture	Data Bus	Diff/S.E. Input	min	max	max	max	Package/Pins	See Notes
MAX11253	16	6	64	Sigma-Delta	Microwire QSPI SPI	Diff. Only	0	3.6	3.6	1.8	TQFN/32	$4.95 @1k

Design kits & evaluation modules

Ordering Information

Part Number	Status	Recommended Replacement	Package	Temp	RoHS
MAX11253ATJ+	Active		TQFN,;32 pin;26 mm²	-40°C to +125°C	Lead Free
MAX11253ATJ+T	Active		QFN;	-40°C to +125°C	See data sheet

MAX11253.pdf MAX11253