MAX11209/MAX11211 18-Bit, Single-Channel, Ultra-Low-Power, Delta- Sigma ADCs with Programmable Gain and GPIO General Description Features S 18-Bit Noise-Free Resolution The MAX11209/MAX11211 are ultra-low-power (< 300FA active current), high-resolution, serial-output ADCs. S 570nV Noise at 10sps, 3.6V Input RMS FS These devices provide the highest resolution per unit S 3ppm INL (typ), 15ppm (max) power in the industry, and are optimized for applications S No Missing Codes that require very high dynamic range with low power, S Ultra-Low Power Dissipation such as sensors on a 4mA to 20mA industrial control Operating-Mode Current Drain < 300A (max) loop. Optional input buffers provide isolation of the sig- Sleep-Mode Current Drain < 0.4A nal inputs from the switched capacitor sampling network S Programmable Gain (1 to 128) (MAX11209) allowing these converters to be used with high-imped- S Four SPI-Controlled GPIOs for External Mux ance sources without compromising available dynamic Control range or linearity. The devices provide a high-accuracy S 2.7V to 3.6V Analog Supply Voltage Range internal oscillator that requires no external components. When used with the specified data rates, the internal S 1.7V to 3.6V Digital and I/O Supply Voltage Range digital filter provides more than 100dB rejection of 50Hz S Fully Differential Signal and Reference Inputs or 60Hz line noise. The devices are configurable using S High-Impedance Inputs the SPI interface and include four GPIOs that can be Optional Input Buffers on Both Signal and used for external mux control. The MAX11209 includes Reference Inputs digital programmable gain of 1 to 128. S > 100dB (min) 50Hz/60Hz Rejection The MAX11209/MAX11211 operate over the -40NC to S SPI-, QSPI-, MICROWIRE-Compatible Serial +85NC temperature range, and are available in a 16-pin Interface QSOP package. S On-Demand Offset and Gain Self-Calibration and System Calibration Applications S User-Programmable Offset and Gain Registers Sensor Measurement (Temperature and S -40C to +85C Operating Temperature Range Pressure) S 2kV ESD Protection Portable Instrumentation S Lead(Pb)-Free and RoHS-Compliant QSOP Package Battery Applications Weigh Scales Ordering Information PART TEMP RANGE PIN-PACKAGE SPI and QSPI are trademarks of Motorola, Inc. MAX11209EEE+ -40C to +85C 16 QSOP MICROWIRE is a trademark of National Semiconductor Corp. MAX11211EEE+ -40C to +85C 16 QSOP +Denotes a lead(Pb)-free/RoHS-compliant package. Selector Guide RESOLUTION 4-WIRE SPI, 16-PIN QSOP, 4-WIRE SPI, 2-WIRE SERIAL, (BITS) PROGRAMMABLE GAIN 16-PIN QSOP 10-PIN MAX MAX11201 (with buffers) 24 MAX11210 MAX11200 MAX11202 (without buffers) 20 MAX11206 MAX11207 MAX11208 18 MAX11209 MAX11211 MAX11212 16 MAX11213 MAX11203 MAX11205 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxims website at www.maximintegrated.com. 19-5473 Rev 0 8/10MAX11209/MAX11211 18-Bit, Single-Channel, Ultra-Low-Power, Delta- Sigma ADCs with Programmable Gain and GPIO ABSOLUTE MAXIMUM RATINGS Any Pin to GND ....................................................-0.3V to +3.9V Continuous Power Dissipation (T = +70NC) A AVDD to GND .......................................................-0.3V to +3.9V 16-Pin QSOP (derate 8.3mW/NC above +70NC) ..........667mW DVDD to GND ......................................................-0.3V to +3.9V Operating Temperature Range .......................... -40NC to +85NC Analog Inputs (AINP, AINN, REFP, REFN) Junction Temperature .....................................................+150NC to GND ............................................. -0.3V to (V + 0.3V) Storage Temperature Range ............................ -55NC to +150NC AVDD Lead Temperature (soldering, 10s) ................................+300NC Digital Inputs and Digital Outputs Soldering Temperature (reflow) ......................................+260NC to GND ............................................. -0.3V to (V + 0.3V) DVDD ESD (AVDD, AINP, AINN, REFP, REFN, DVDD, CLK, CS, HB SCLK, DIN, RDY/DOUT, GND, GPIO ) ........... Q2kV (Note 1) Note 1: Human Body Model to specification MIL-STD-883 Method 3015.7. Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS (V = +3.6V, V = +1.7V, V - V = V internal clock, single-cycle mode (SCYCLE = 1), T = T to T , AVDD DVDD REFP REFN AVDD A MIN MAX unless otherwise noted. Typical values are at T = +25NC under normal conditions, unless otherwise noted.) A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS STATIC PERFORMANCE 120sps 18 Noise-Free Resolution (Notes 2, 3) NFR Bits 10sps 18 120sps 2.1 Noise (Notes 2, 3) V FV N RMS 10sps 0.55 Integral Nonlinearity INL At 10sps (Note 4) -15 +15 ppmFSR After self and system calibration, Zero Error -15 +15 ppmFSR V - V = 2.5V REFP REFN Zero Drift 50 nV/NC After self and system calibration, Full-Scale Error -20 +20 ppmFSR V - V = 2.5V (Note 5) REFP REFN ppmFSR/ Full-Scale Error Drift 0.05 NC AVDD DC rejection 70 80 Power-Supply Rejection dB DVDD DC rejection 90 100 ANALOG INPUTS/REFERENCE INPUTS DC rejection 90 123 Common-Mode Rejection CMR 50Hz/60Hz rejection at 120sps 90 dB 50Hz/60Hz rejection at 1sps to 15sps 144 Normal-Mode 50Hz Rejection NMR LINEF = 1, for 1sps to 15sps (Notes 6, 7) 100 144 dB 50 Normal-Mode 60Hz Rejection NMR LINEF = 0, for 1sps to 15sps (Notes 6, 7) 100 144 dB 60 Common-Mode Voltage Range AIN buffers disabled V V V GND AVDD 2 Maxim Integrated