EVALUATION KIT AVAILABLE MAX11960 Dual Simultaneous Sampling, 20-Bit, 1Msps, Differential SAR ADC General Description Benefits and Features The MAX11960 is a 20-bit, 1Msps, dual simultaneous 20-Bit Resolution with No Missing Codes sampling, fully differential SAR ADC with internal reference 1Msps Throughput with No Pipeline Delay buffers. The MAX11960 provides excellent static and 18mW at 1Msps, Ultra-Low Power Consumption dynamic performance with best-in-class power consumption that directly scales with throughput. The device has a 1.5LSB INL, Over Temperature unipolar differential V input range. Supplies include REF 1 LSB DNL Maximum at 20 Bits a 3.3V supply for the reference buffers, a 1.8V analog 99dB SNR at f = 10kHz IN supply, a 1.8V digital supply, and a 1.5V to 3.6V digital 99dB SINAD at f = 10kHz interface supply. IN -123dB THD at f = 10kHz This ADC achieves 99dB SNR and -123dB THD, guarantees IN 20-bit resolution with no-missing codes and 5 LSB INL (max). V Unipolar Differential Analog Input Range REF The MAX11960 communicates data using a SPI- V = 2.5V to 3.6V REF compatible serial interface. The MAX11960 is offered in a Integrated Reference Buffers 32-pin, 5mm x 5mm, TQFN package and is specified over 1.8V Analog and Digital Core Supply the -40C to +85C operating temperature range. 3.3V REFVDD Reference Buffer Supply Applications 1.5V to 3.6V Digital Interface Supply Encoder and Resolver in Motion Control M Serial Interface SPI/QSPIK/MICROWIRE /DSP- Automatic Test Equipment Compatible Medical Instrumentation -40C to +85C Operation* Process Control and Industrial Automation 32-Pin, 5mm x 5mm, TQFN Package Data Acquisition Systems Telecommunications *Contact Maxim Integrated for extended temperature Redundant Measurement range. Ordering Information and Selector Guide appear at end of QSPI is a trademark of Motorola, Inc. data sheet. MICROWIRE is a registered trademark of National Semiconductor Corporation. 19-8528 Rev 1 11/16MAX11960 Dual Simultaneous Sampling, 20-Bit, 1Msps, Differential SAR ADC Absolute Maximum Ratings REFVDD, REF1 , REF2 , REFIN to REFGND ......-0.3V to +4V Maximum Current into Any Pin...........................................50mA OVDD to DGND ......................................................-0.3V to +4V Continuous Power Dissipation (T = +70C) A AVDD, DVDD to AGND ...........................................-0.3V to +2V TQFN (derate 35.7mW/C above +70C)...............2857.1mW DGND, REFGND, AGND .....................................-0.3V to +0.3V Operating Temperature Range ........................... -40C to +85C AIN +, AIN - to AGND -0.3V to the lower of (V + 0.3V) and Junction Temperature ......................................................+150C REF +4V or 130mA Storage Temperature Range ............................ -65C to +150C SCLK, DIN , DOUT , CNVST , to DGND .................................. Lead Temperature (soldering, 10s) .................................+300C ............................-0.3V to the lower of (V + 0.3V) and +4V Soldering Temperature (reflow) .......................................+260C OVDD 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. Package Thermal Characteristics (Note 1) TQFN Junction-to-Ambient Thermal Resistance ( )........28C/W JA Junction-to-Case Thermal Resistance ( ) .......... 1.4C/W JC Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial. Electrical Characteristics (f = 1Msps, V = 1.8V, V = 1.8V, V = 1.5V to 3.6V, V = 3.6V, V = 3.3V, Internal Ref Buffers On, SAMPLE AVDD DVDD OVDD REFVDD REF T = T to T , unless otherwise noted. Typical values are at T = +25C.) (Note 2) A MIN MAX A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS ANALOG INPUT Input Voltage Range (Note 3) (AIN +) - (AIN -) -V +V V REF REF V + REF Absolute Input Voltage Range AIN +, AIN - relative to AGND -0.1 V 0.1 V /2 - V /2 REF REF Common-Mode Input Range (AIN +) + (AIN -) /2 V /2 V REF 0.1 + 0.1 Input Leakage Current Acquisition phase -1 0.001 +1 A Input Capacitance 32 pF STATIC PERFORMANCE (Note 4) Resolution N 20 Bits Resolution LSB V = 3.3V 6.3 V REF No Missing Codes 20 Bits Offset Error (Note 4) -15 1 +15 LSB Offset Temperature Coefficient 0.1 LSB/C Gain Error Referred to REFIN reference input -175 20 +175 LSB Gain Error Temperature Referred to REFIN reference input 0.2 LSB/C Coefficient (Note 5) Gain Error Referred to REF1 or REF2 pins -50 10 +50 LSB Gain Error Temperature Referred to REF1 or REF2 pins 0.12 LSB/C Coefficient (Note 5) Integral Nonlinearity INL -5 1.5 +5 LSB Maxim Integrated 2 www.maximintegrated.com