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EVALUATION KIT AVAILABLE
MAX11335–MAX11340
500ksps, 12-/10-Bit, 4-/8-/16-Channel ADCs with Post-Mux External Signal Conditioning Access
General Description
Benefits and Features
The MAX11335–MAX11340 are 12-/10-bit with external reference and 500kHz, full-linear-bandwidth, high-speed, low-power, serial-output successive approximation register (SAR) analog-to-digital converters (ADCs). The MAX11335–MAX11340 provide external access to the output of the integrated mux and ADC input, to simplify conditioning. The MAX11335–MAX11340 include both internal and external clock modes. These devices feature scan mode in both internal and external clock modes. The internal clock mode features internal averaging to increase SNR. The external clock mode features the SampleSetK technology, a user-programmable analog input channel sequencer. The SampleSet approach provides greater sequencing flexibility for multichannel applications while alleviating significant microcontroller or DSP (controlling unit) communication overhead. External pins provide access to the output of the multiplexer and ADC inputs to simplify multichannel signal conditioning. The internal clock mode features an integrated FIFO allowing data to be sampled at high speeds and then held for readout at any time or at a lower clock rate. Internal averaging is also supported in internal clock mode improving SNR for noisy input signals. The devices feature analog input channels that can be configured to be single-ended inputs, fully differential pairs, or pseudodifferential inputs with respect to one common input. The MAX11335–MAX11340 operate from a 2.35V to 3.6V supply and consume only 4.2mW at 500ksps. The MAX11335–MAX11340 include AutoShutdownK, fast wake-up, and a high-speed 3-wire serial interface. The devices feature full power-down mode for optimal power management. The 8MHz, 3-wire serial interface directly connects to SPI, QSPIK, and MICROWIREM devices without external logic. Excellent dynamic performance, low voltage, low power, ease of use, and small package size make these converters ideal for portable battery-powered data-acquisition applications, and for other applications that demand low power consumption and small space. The MAX11335–MAX11340 are available in 32-pin, 5mm x 5mm, TQFN packages and operate over the -40NC to +125NC temperature range.
SampleSet and AutoShutdown are trademarks of Maxim Integrated Products, Inc. QSPI is a trademark of Motorola, Inc. MICROWIRE is a registered trademark of National Semiconductor Corp.
Ordering Information appears at end of data sheet.
S Highly Integrated Precision ADC Saves Space while Retaining Flexibility ±1 LSB INL, ±1 LSB DNL, No Missing Codes 70dB SINAD at 100kHz 500ksps Conversion Rate with No Pipeline Delay
S Analog Multiplexer with True Differential Track/Hold: Any Combination of Single-Ended, Differential and Pseudo-Differential Input Pin Pairs Allowed 16-/8-/4-Channel Single-Ended 12-/8-/4-Channel Fully-Differential Pairs 15-/8-/4-Channel Pseudo-Differential Relative to a Common Input
S Two Software-Selectable Bipolar Input Ranges (±VREF+/2, ±VREF+)
S External Differential Reference (1V to VDD) S 32-Pin, 5mm x 5mm TQFN Package
S SampleSet™ Technology Brings Extreme Flexibility to Program Input Configurations Per Channel and Sampling Sequence, Optimizes Interface to the Microcontroller User-Defined Channel Sequence with Maximum Length of 256 Scan Modes, Internal Averaging, and Internal Clock 16-Entry First-In/First-Out (FIFO)
S Post-Mux Signal Access Allows for External Signal Conditioning Between the Mux and ADC For Differential Signals Externally Accessible Multiplex Output and ADC Input
S Low Power Consumption Extends Battery Life for Portable Applications 1.5V to 3.6V Digital I/O Supply Voltage 2.35V to 3.6V Supply Voltage 4.2mW at 500ksps with 3V Supplies 2μA Full-Shutdown Current
S Easy to Interface with Most Microcontrollers 16MHz, 3-Wire SPI-/QSPI-/MICROWIRE-/DSP Compatible Serial Interface
Applications
High-Speed Data Acquisition Systems
High-Speed Closed-Loop Systems
Industrial Control Systems
Medical Instrumentation
Battery-Powered Instruments
Portable Systems
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
19-6468; Rev 1; 12/14
MAX11335–MAX11340
500ksps, 12-/10-Bit, 4-/8-/16-Channel ADCs with Post-Mux External Signal Conditioning Access
ABSOLUTE MAXIMUM RATINGS
VDD to GND..............................................................-0.3V to +4V AOP, AON, AIP, AIN, OVDD, AIN0–AIN13, CNVST/AIN14, REF+,
REF-/AIN15 to GND........................................ -0.3V to the lower of
(VDD + 0.3V) and +4V CS, SCLK, DIN, DOUT, EOC TO GND........-0.3V to the lower of
(VOVDD + 0.3V) and +4V DGND to GND.......................................................-0.3V to +0.3V Input/O.