EVALUATION KIT AVAILABLE Click here for production status of specific part numbers. MAX11120MAX11128 1Msps, Low-Power, Serial 12-/10-/8-Bit, 4-/8-/16-Channel ADCs General Description Benefits and Features The MAX11120MAX11128 are 12-/10-/8-bit with external Scan Modes, Internal Averaging, and Internal Clock reference and industry-leading 1.5MHz, full linear band- 16-Entry First-In/First-Out (FIFO) width, high speed, low-power, serial output successive- SampleSet: User-Defined Channel Sequence with approximation register (SAR) analog-to-digital converters Maximum Length of 256 (ADCs). The MAX11120MAX11128 include both internal Analog Multiplexer with True Differential Track/Hold and external clock modes. These devices feature scan 16-/8-/4-Channel Single-Ended mode in both internal and external clock modes. The inter- 8-/4-/2-Channel Fully-Differential Pairs nal clock mode features internal averaging to increase 15-/8-/4-Channel Pseudo-Differential Relative to a SNR. The external clock mode features the SampleSet Common Input technology, a user-programmable analog input channel Two Software-Selectable Bipolar Input Ranges sequencer. The SampleSet approach provides greater V /2, V sequencing flexibility for multichannel applications while REF+ REF+ alleviating significant microcontroller or DSP (controlling Flexible Input Configuration Across All Channels unit) communication overhead. High Accuracy The internal clock mode features an integrated FIFO 1 LSB INL, 1 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 70dB SINAD Guaranteed at 250kHz Input Frequency averaging is also supported in this mode improving SNR 1.5V to 3.6V Wide Range I/O Supply for noisy input signals. The devices feature analog input Allows the Serial Interface to Connect Directly to channels that can be configured to be single-ended 1.8V, 2.5V, or 3.3V Digital Systems inputs, fully differential pairs, or pseudo-differential inputs 2.35V to 3.6V Supply Voltage with respect to one common input. The MAX11120 Longer Battery Life for Portable Applications MAX11128 operate from a 2.35V to 3.6V supply and Low Power consume only 5.4mW at 1Msps. 5.4mW at 1Msps with 3V Supplies The MAX11120MAX11128 include AutoShutdown, fast 2A Full-Shutdown Current wake-up, and a high-speed 3-wire serial interface. The External Differential Reference (1V to V ) DD devices feature full power-down mode for optimal power 16MHz, 3-Wire SPI-/QSPI-/MICROWIRE-/DSP- management. Compatible Serial Interface The 16MHz, 3-wire serial interface directly connects to Wide -40C to +125C Operation SPI, QSPI, and MICROWIRE devices without external Space-Saving, 28-Pin, 5mm x 5mm TQFN Packages logic. 1Msps Conversion Rate, No Pipeline Delay Excellent dynamic performance, low voltage, low power, 12-/10-/8-Bit Resolution ease of use, and small package size make these convert- ers ideal for portable battery-powered data-acquisition AECQ-100 Qualified Variant Available (MAX11128ATI/V+) applications, and for other applications that demand low power consumption and small space. Applications High-Speed Data Acquisition Systems The MAX11120MAX11128 are available in 28-pin, 5mm High-Speed Closed-Loop Systems x 5mm, TQFN packages and operate over the -40C to Industrial Control Systems +125C temperature range. Medical Instrumentation SampleSet and AutoShutdown are trademarks of Maxim Battery-Powered Instruments Integrated Products, Inc. Portable Systems QSPI is a trademark of Motorola, Inc. MICROWIRE is a registered trademark of National Ordering Information appears at end of data sheet. Semiconductor Corporation. 19-6148 Rev 4 2/19MAX11120MAX11128 1Msps, 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 = +70C) DD A OVDD, AIN0AIN13, CNVST/AIN14, REF+, REF-/AIN15 TQFN (derate 34.4mW/C above +70C)..................2758mW to GND ...............-0.3V to the lower of (V + 0.3V) and +4V Operating Temperature Range ......................... -40C to +125C DD CS, SCLK, DIN, DOUT, EOC TO GND ......-0.3V to the Lower of Junction Temperature ......................................................+150C (V + 0.3V) and +4V Storage Temperature Range ............................ -65C to +150C OVDD DGND to GND ......................................................-0.3V to +0.3V Lead Temperature (soldering, 10s) .................................+300C Input/Output Current (all pins) ............................................50mA Soldering Temperature (reflow) .......................................+260C 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 ( ) ..........29C/W JA Junction-to-Case Thermal Resistance ( ) ................2C/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 (MAX11122/MAX11125/MAX11128) (V = 2.35V to 3.6V, V = 1.5V to 3.6V, f = 1Msps, f = 16MHz, 50% duty cycle, V = V , T = -40C to +125C, DD OVDD SAMPLE SCLK REF+ DD A unless otherwise noted. Typical values are at T = +25C.) (Note 2) A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS DC ACCURACY (Notes 3 and 4) Resolution RES 12 bit 12 Bits 1.0 Integral Nonlinearity INL LSB MAX11128ATI/V+ 1.2 Differential Nonlinearity DNL No missing codes 1.0 LSB Offset Error 0.7 2.5 LSB Gain Error (Note 5) -0.5 4.0 LSB Offset Error Temperature OE 2 ppm/C TC Coefficient Gain Temperature Coefficient GE 0.8 ppm/C 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 Maxim Integrated 2 www.maximintegrated.com