Low Power kSPS A/D Converters (ADCs)

Sensor AFE Revolutionizes Sensor System Design

LMP90100 – Multi-Channel 24-bit Sensor AFE

The LMP90100 Sensor AFE features the industry's only low-power, fully configurable 24-bit ΣΔ ADC with true continuous background calibration, eliminating gain and offset drift over time and temperature and making it ideal for critical performance and low power applications.

• Multi-channel Sensor AFE with a 24-bit Sigma Delta ADC core
• Flexible, programmable mux (4 differential, 7 single-ended, or a combination)
• Continuous background sensor diagnostics reduces downtime and improves system efficiency
• Quick design and evaluation
• Ideal for high-precision, multi-sensor temperature, pressure, load, and force applications
• Industrial, process control, medical, and test & measurement applications

• Sensor AFE (integrated analog front end for many sensors types)
• Pressure and Load Sensing Applications
• Temperature Sensing Applications
• Optical Sensing Applications
• Other Sensor Applications

Single-Ended Input ADCs with SPI Interface

Channels	Bits	50 – 200 kSPS	200 – 500 kSPS	500 – 1000 kSPS	Compatibility	Package(s)
Single	12					SOT23-6 LLP-6
	10
	8
Dual	12					MSOP-8
	10
	8
Quad	12					MSOP-10
	10
	8
Octal	12					TSSOP-16
	10
	8

Differential Input ADCs with SPI Interface

Channels	Bits	50 – 200 kSPS	200 – 500 kSPS	500 – 1000 kSPS	Compatibility	Package(s)
Single	16					MSOP-10 MSOP-8
	14
	12
Dual with Simultaneous Sampling	12				Pin & function compatible	MSOP-10 TSSOP-16

Single-Ended Input ADCs with I2C Interface

Channels	Bits	Alert (TSOT), Alert + Multiple Address (MSOP)	Multiple Address (TSOT)	Compatibility	Package(s)
Single	12				TSOT-6 MSOP-8
	10
	8

Single-Ended / Pseudo-Differential ADC with I2C Interface

Low Power Benefits of National's PowerWise® ADCs

National's PowerWise Analog-to-Digital Converters (ADCs) are the lowest power family of A/D converters on the market. In addition to providing extremely low power consumption over a range of sample rates, each ADC has a very efficient power down feature. For example, a single channel 1Msps PowerWise ADC used in a 10 Ksps application has a typical power consumption of 0.02 mW at 3V.

National's PowerWise ADCs also lower engineering cost. A/D converters with the same channel count and package are interchangeable so one PCB layout supports multiple system designs that require different resolutions and sample rates.

And since National's PowerWise A/D converter performance is guaranteed over a range of sample rates instead of a single rate, unique in the industry, one ADC can be used in place of multiple conventional ADCs. This reduces design time, shortens time to market and lowers component stocking cost.

ADC121S101 used in 10 ksps application Power consumption at 3V (active mode): 2.0 mW (typ) Power consumption (power down): 2.5 µW (typ) Average power consumption at 3V: 0.02mW (typ)

Low Power ADC Naming Convention