MAX11203

The MAX11203/MAX11213 operate over the -40°C to +85°C temperature range, and are available in a 16-pin QSOP package. The MAX11203/MAX11213 are ultra-low-power (< 300FA active current), high-resolution, serial-output ADCs. Optional input buffers provide isolation of the signal inputs from the switched capacitor sampling network allowing these converters to be used with high-impedance sources without compromising available dynamic range or linearity. When used with the specified data rates, the internal digital filter provides more than 100dB rejection of 50Hz or 60Hz line noise. These devices provide the highest resolution per unit power in the industry, and are optimized for applications that require very high dynamic range with low power, such as sensors on a 4mA to 20mA industrial control loop. The devices provide a high-accuracy internal oscillator that requires no external components. The devices are configurable using the SPITM interface and include four GPIOs that can be used for external mux control. The MAX11213 includes digital programmable gain of 1 to 128.

The features of MAX11203 can be summarized as (1)16-bit noise-free resolution; (2)570nVRMnoise at 10sps, ±3.6VF input; (3)3ppm INL (typ), 20ppm (max); (4)no missing codes; (5)ultra-low power dissipation operating-mode current drain < 300A (max)/ sleep-mode current Drain < 0.4A; (6)programmable gain (1 to 128)(MAX11213); (7)four SPI-controlled GPIOs for external mux control; (8)2.7V to 3.6V analog supply voltage range; (9)1.7V to 3.6V digital and I/O supply voltage range; (10)fully differential signal and reference inputs; (11)high-impedance inputs optional input buffers on both signal and reference inputs; (12)> 100dB (min)50Hz/60Hz rejection; (13)SPI-, QSPITM-, MICROWIRETM-compatible serial interface; (14)on-demand offset and gain self-calibration and system calibration; (15)user-programmable offset and gain registers; (16)-40°C to +85°C operating temperature range; (17)±2kV ESD protection; (18)lead(Pb)-free and RoHS-compliant QSOP package.

The absolute maximum ratings of MAX11203 are (1)any pin to GND: -0.3V to +3.9V; (2)AVDD to GND: -0.3V to +3.9V; (3)DVDD to GND: -0.3V to +3.9V; (4)analog inputs (AINP, AINN, REFP, REFN)to GND: -0.3V to (VAVDD + 0.3V); (5)digital inputs and digital outputs to GND: -0.3V to (VDVDD + 0.3V); (6)ESDHB (AVDD, AINP, AINN, REFP, REFN, DVDD, CLK, CS, SCLK, DIN, RDY/DOUT, GND, GPIO_): Q2kV; (7)continuous power dissipation (TA = +70°C)16-pin QSOP (derate 8.3mW/°C above +70°C): 667mW; (8)operating temperature range: -40°C to +85°C; (9)junction temperature: +150°C; (10)storage temperature range: -55°C to +150°C; (11)lead temperature (soldering, 10s): +300°C; (12)soldering temperature (reflow): +260°C.