19-6215 Rev 1 7/12 EVALUATION KIT AVAILABLE MAX11135MAX11143 500ksps, Low-Power, Serial 12-/10-/8-Bit, 4-/8-/16-Channel ADCs General Description Benefits and Features S Scan Modes, Internal Averaging, and Internal The MAX11135MAX11143 are 12-/10-/8-bit with exter- Clock nal reference and industry-leading 1.5MHz, full linear S 16-Entry First-In/First-Out (FIFO) bandwidth, high speed, low-power, serial output suc- cessive-approximation register (SAR) analog-to-digital S SampleSet: User-Defined Channel Sequence with converters (ADCs). The MAX11135MAX11143 include Maximum Length of 256 both internal and external clock modes. These devices S Analog Multiplexer with True Differential feature scan mode in both internal and external clock Track/Hold 16-/8-/4-Channel Single-Ended modes. The internal clock mode features internal averag- 8-/4-/2-Channel Fully-Differential Pairs ing to increase SNR. The external clock mode features 15-/8-/4-Channel Pseudo-Differential Relative to the SampleSetK technology, a user-programmable ana- a Common Input log input channel sequencer. The SampleSet approach S Two Software-Selectable Bipolar Input Ranges provides greater sequencing flexibility for multichannel QV /2, QV REF+ REF+ applications while alleviating significant microcontroller S Flexible Input Configuration Across All Channels or DSP (controlling unit) communication overhead. S High Accuracy The internal clock mode features an integrated FIFO Q1 LSB INL, Q1 LSB DNL, No Missing Codes allowing data to be sampled at high speeds and then held Over Temperature Range for readout at any time or at a lower clock rate. Internal S 70dB SINAD Guaranteed at 250kHz Input averaging is also supported in this mode improving SNR Frequency for noisy input signals. The devices feature analog input S 1.5V to 3.6V Wide Range I/O Supply channels that can be configured to be single-ended Allows the Serial Interface to Connect Directly inputs, fully differential pairs, or pseudo-differential inputs to 1.8V, 2.5V, or 3.3V Digital Systems with respect to one common input. The MAX11135 S 2.35V to 3.6V Supply Voltage MAX11143 operate from a 2.35V to 3.6V supply and S Longer Battery Life for Portable Applications consume only 4.2mW at 500ksps. Low Power The MAX11135MAX11143 include AutoShutdownK, 4.2mW at 500ksps with 3V Supplies 2A Full-Shutdown Current fast wake-up, and a high-speed 3-wire serial interface. The devices feature full power-down mode for optimal S External Differential Reference (1V to V ) DD power management. S 8MHz, 3-Wire SPI-/QSPI-/MICROWIRE-/DSP- Compatible Serial Interface The 8MHz, 3-wire serial interface directly connects to SPI, M QSPIK, and MICROWIRE devices without external logic. S Wide -40NC to +125NC Operation Excellent dynamic performance, low voltage, low power, S Space-Saving, 28-Pin, 5mm x 5mm TQFN Packages ease of use, and small package size make these convert- ers ideal for portable battery-powered data-acquisition S 500ksps Conversion Rate, No Pipeline Delay applications, and for other applications that demand low S 12-/10-/8-Bit Resolution power consumption and small space. Applications The MAX11135MAX11143 are available in 28-pin, 5mm x 5mm, TQFN packages and operate over the -40NC to High-Speed Data Acquisition Systems +125NC temperature range. High-Speed Closed-Loop Systems Industrial Control Systems SampleSet and AutoShutdown are trademarks of Maxim Medical Instrumentation Integrated Products, Inc. QSPI is a trademark of Motorola, Inc. Battery-Powered Instruments MICROWIRE is registered a trademark of National Portable Systems Semiconductor Corporation. For related parts and recommended products to use with this part, Ordering Information appears at end of data sheet. refer to www.maxim-ic.com/MAX11135.related. 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.MAX11135MAX11143 500ksps, Low-Power, Serial 12-/10-/8-Bit, 4-/8-/16-Channel ADCs ABSOLUTE MAXIMUM RATINGS V to GND .............................................................-0.3V to +4V Continuous Power Dissipation (T = +70NC) DD A OVDD, AIN0AIN13, CNVST/AIN14, REF+, REF-/AIN15 TQFN (derate 34.4mW/NC above +70NC)..................2758mW to GND ......................-0.3V to the lower of (V + 0.3V) and +4V Operating Temperature Range ........................ -40NC to +125NC DD Junction Temperature .....................................................+150NC CS, SCLK, DIN, DOUT, EOC TO GND .......-0.3V to the lower of Storage Temperature Range ............................ -65NC to +150NC (V + 0.3V) and +4V OVDD Lead Temperature (soldering, 10s) ................................+300NC DGND to GND ......................................................-0.3V to +0.3V Soldering Temperature (reflow) ......................................+260NC Input/Output Current (all pins) ...........................................50mA Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional opera- tion 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 (B ) ...........29NC/W JA Junction-to-Case Thermal Resistance (B ) ..................2NC/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.maxim-ic.com/thermal-tutorial. ELECTRICAL CHARACTERISTICS (MAX11135/MAX11136/MAX11137) (V = 2.35V to 3.6V, V = 1.5V to 3.6V, f = 500ksps, f = 8MHz, 50% duty cycle, V = V , T = -40NC to +125NC, DD OVDD SAMPLE SCLK REF+ DD A unless otherwise noted. Typical values are at T = +25NC.) (Note 2) A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS DC ACCURACY (Notes 3 and 4) Resolution RES 12 bit 12 Bits Integral Nonlinearity INL 1.0 LSB Differential Nonlinearity DNL No missing codes 1.0 LSB Offset Error 0.7 2.5 LSB Gain Error (Note 5) -0.5 4.4 LSB Offset Error Temperature OE 2 ppm/NC TC Coefficient Gain Temperature Coefficient GE 0.8 ppm/NC TC Channel-to-Channel Offset 0.5 LSB Matching Line Rejection PSR (Note 6) 0.4 1.5 LSB/V DYNAMIC PERFORMANCE (250kHz, input sine wave) (Notes 3 and 7) Signal-to-Noise Plus Distortion SINAD 70 72.5 dB Signal-to-Noise Ratio SNR 70 72.6 dB Total Harmonic Distortion THD -87 -78 dB (Up to the 5th Harmonic) Spurious-Free Dynamic Range SFDR 79 88 dB Intermodulation Distortion IMD f = 249.878kHz, f = 219.97kHz -85 dB 1 2 2