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Free evaluation kit
Register here to get a Free Maxim MAX11200EVKIT*
*for the first 30 registrants
– subject to availability of stock.
Maxim MAX11200 solves two dilemmas: This ADC family has very high accuracy and is burning only low power
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This ultra-low-noise, third-order delta sigma converter family delivers 23.6 effective number of bits (ENOB) at less than 1mW power dissipation at 10sps (samples per second) and 21.7ENOB at 480sps.
The power is so low (300µA maximum), the MAX11200 meets the strict 4-20mA loop sensor power budget, which is typically 500µA or less. Integrated input buffers accept high impedance sensors such as thermocouples without degrading the performance. INL (Integral non linearity) is an industry-leading 10ppm worst case. GPIO (general purpose input/output) controls allow for external connection of a multiplexer for multi lead temperature and pressure sensing applications in order to save cost and board space needed for digital signal isolation lines. Multiple pin compatible members of the MAX11200 family are available with different resolutions for cost optimization.
Features
- 24-bit 1-channel ΣΔADC, Differential Inputs, SPI and 4 GPIOs
- 22-bit noise free resolution @ 4.6sps
- 19-bit noise free resolution @ 120sps
- 240mA Supply Current (typ)
- 2.7V to 3.6V analog supply;
- 1.7V to 3.6V digital and I/O supply
- Fully differential voltage reference inputs
- Analog input and reference buffers (QSOP-16 Package)
- Internal or external system clock of 2.4576MHz or 2.048MHz provides >100dB 50/60Hz rejection
Benefits
- 21 bits noise free range @ 10sps, 3.3V FS
- Simplify or remove external signal conditioning/gain circuits
- < 300mA (max) operating current @ 120sps
- Safe operating margin for the current consumption budget allowed for devices powered by the 4-20mA network
- 4 SPI-controlled digital GPIO’s for external MUX control (MAX11200)
- Low control pin count convenient when ADC is near probe tip or connected to mC via Flex cable
- Low cost solution for 24-bit applications
- Sensor measurement (temp, pressure, etc), portable instrumentation, battery applications, weigh scales