MAX11661MAX11666 19-5530 Rev 5 4/12 500ksps, Low-Power, Serial 12-/10-/8-Bit ADCs General Description Features The MAX11661MAX11666 are 12-/10-/8-bit, compact, S 500ksps Conversion Rate, No Pipeline Delay low-power, successive approximation analog-to-digital S 12-/10-/8-Bit Resolution converters (ADCs). These high-performance ADCs include S 1-/2-Channel, Single-Ended Analog Inputs a high-dynamic range sample-and-hold and a high-speed S Low-Noise 73dB SNR serial interface. These ADCs accept a full-scale input from 0V to the power supply or to the reference voltage. S Variable I/O: 1.5V to 3.6V (Dual-Channel Only) The MAX11662/MAX11664/MAX11666 feature dual, sin- Allows the Serial Interface to Connect Directly to 1.5V, 1.8V, 2.5V, or 3V Digital Systems gle-ended analog inputs connected to the ADC core using a 2:1 MUX. The devices also include a separate S 2.2V to 3.6V Supply Voltage supply input for data interface and a dedicated input S Low Power for reference voltage. In contrast, the single-channel 3.3mW devices generate the reference voltage internally from Very Low Power Consumption at 8A/ksps the power supply. S External Reference Input (Dual-Channel Devices Only) These ADCs operate from a 2.2V to 3.6V supply and S 1.3A Power-Down Current consume only 3.3mW. The devices include full power- down mode and fast wake-up for optimal power man- S SPI-/QSPI-/MICROWIRE-Compatible Serial agement and a high-speed 3-wire serial interface. The Interface 3-wire serial interface directly connects to SPI, QSPIK, S 10-Pin, 3mm x 5mm MAX Package and MICROWIRE devices without external logic. S 6-Pin, 2.8mm x 2.9mm SOT23 Package Excellent dynamic performance, low voltage, low power, S Wide -40NC to +125NC Operation ease of use, and small package size make these con- verters ideal for portable battery-powered data-acquisi- Applications tion applications, and for other applications that demand low-power consumption and minimal space. Data Acquisition These ADCs are available in a 10-pin FMAX package, Portable Data Logging and a 6-pin SOT23 package. These devices operate Medical Instrumentation over the -40NC to +125NC temperature range. Battery-Operated Systems Communication Systems Automotive Systems Ordering Information PART PIN-PACKAGE BITS NO. OF CHANNELS MAX11661AUT+ 6 SOT23 8 1 MAX11662AUB+ 10 FMAX-EP* 8 2 MAX11663AUT+ 6 SOT23 10 1 MAX11664AUB+ 10 FMAX-EP* 10 2 MAX11665AUT+ 6 SOT23 12 1 MAX11666AUB+ 10 FMAX-EP* 12 2 MAX11666AUB/V+ 10 FMAX-EP* 12 2 Note: All devices are specified over the -40C to +125C operating temperature range. +Denotes a lead(Pb)-free/RoHS-compliant package. *EP = Exposed pad. /V denotes an automotive qualified part. QSPI is a trademark of Motorola, Inc. MICROWIRE is a registered trademark of National Semiconductor Corp. MAX is a registered trademark of Maxim Integrated Products, Inc. Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com. EVALUATION KIT AVAILABLE500ksps, Low-Power, Serial 12-/10-/8-Bit ADCs ABSOLUTE MAXIMUM RATINGS V to GND .............................................................-0.3V to +4V Continuous Power Dissipation (T = +70NC) DD A REF, OVDD, AIN1, AIN2, AIN to GND ........-0.3V to the lower of 6-Pin SOT23 (derate 8.7mW/NC above +70NC) ...........696mW (V + 0.3V) and +4V 10-Pin FMAX (derate 8.8mW/NC above +70NC)........707.3mW DD CS, SCLK, CHSEL, DOUT TO GND ............-0.3V to the lower of Operating Temperature Range ......................-40NC to +125NC (V + 0.3V) and +4V Junction Temperature .....................................................+150NC OVDD AGND to GND ......................................................-0.3V to +0.3V Storage Temperature Range ............................ -65NC to +150NC Input/Output Current (all pins) ...........................................50mA Lead Temperature (soldering, 10s) ................................+300NC Soldering Temperature (reflow) ......................................+260NC 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 (MAX11666) (V = 2.2V to 3.6V, V = V , V = V . f = 8MHz, 50% duty cycle, 500ksps. C = 10pF, T = -40NC to +125NC, DD REF DD OVDD DD SCLK DOUT A unless otherwise noted. Typical values are at T = +25NC.) (Note 1) A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS DC ACCURACY Resolution 12 Bits Integral Nonlinearity INL Q1 LSB Differential Nonlinearity DNL No missing codes Q1 LSB Offset Error OE Q0.3 Q4 LSB Gain Error GE Excluding offset and reference errors Q1 Q3 LSB Total Unadjusted Error TUE Q1 LSB Channel-to-Channel Offset Q0.4 LSB Matching Channel-to-Channel Gain Q0.05 LSB Matching DYNAMIC PERFORMANCE (f = 250kHz) AIN Signal-to-Noise and Distortion SINAD 70 72 dB Signal-to-Noise Ratio SNR 70.5 72.5 dB Total Harmonic Distortion THD -85 -74.5 dB Spurious-Free Dynamic Range SFDR 75.5 85 dB Intermodulation Distortion IMD f = 239.8kHz, f = 200.2kHz -84 dB 1 2 Full-Power Bandwidth -3dB point 40 MHz Full-Linear Bandwidth SINAD > 68dB 2.5 MHz Small-Signal Bandwidth 45 MHz Crosstalk -90 dB 2 MAX11661MAX11666