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MAX11322 Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX11322 Datasheet(HTML) 1 Page - Maxim Integrated Products |
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1 / 37 page  MAX11321–MAX11328 1Msps, 10-/12-Bit, 4-/8-/16-Channel ADCs with Post-Mux External Signal Conditioning Access 19-6467; Rev 0; 9/12 Ordering Information appears at end of data sheet. For related parts and recommended products to use with this part, refer to www.maximintegrated.com/MAX11321-MAX11328.related. General Description The MAX11321–MAX11328 are 12-/10-bit with external reference and 500kHz, full-linear-bandwidth, high-speed, low-power, serial-output successive approximation reg- ister (SAR) analog-to-digital converters (ADCs). The MAX11321–MAX11328 provide external access to the output of the integrated mux and ADC input, to simplify conditioning. The MAX11321–MAX11328 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 sig- nal conditioning. The internal clock mode features an inte- grated 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 pseudo- differential inputs with respect to one common input. The MAX11321–MAX11328 operate from a 2.35V to 3.6V sup- ply and consume only 5.4mW at 1Msps. The MAX11321–MAX11328 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 48MHz, 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 convert- ers ideal for portable battery-powered data-acquisition applications, and for other applications that demand low power consumption and small space. The MAX11321–MAX11328 are available in 32-pin, 5mm x 5mm, TQFN packages and operate over the -40NC to +125NC temperature range. Benefits and Features S Scan Modes, Internal Averaging, and Internal Clock S 16-Entry First-In/First-Out (FIFO) S SampleSet: User-Defined Channel Sequence with Maximum Length of 256 S Input Pins Any Combination of Single-Ended, Differential and Pseudo-Differential Pairs Allowed S Analog Multiplexer with True Differential Track/Hold 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 Externally Accessible Multiplex Output and ADC Input S Two Software-Selectable Bipolar Input Ranges Q VREF+/2, QVREF+ S Flexible Input Configuration Across All Channels S High Accuracy Q 1 LSB INL, Q1 LSB DNL, No Missing Codes S 70dB SINAD Guaranteed at 100kHz Input Frequency S 1.5V to 3.6V Digital I/O Supply Voltage S 2.35V to 3.6V Supply Voltage S Extended Battery Life for Portable Applications 5.4mW at 1Msps with 3V Supplies 2µA Full-Shutdown Current S External Differential Reference (1V to VDD) S 16MHz, 3-Wire SPI-/QSPI-/MICROWIRE-/DSP- Compatible Serial Interface S Wide -40NC to +125NC Operation S Space-Saving, 32-Pin, 5mm x 5mm TQFN Packages S 1Msps Conversion Rate, No Pipeline Delay Applications High-Speed Data Acquisition Systems High-Speed Closed-Loop Systems Industrial Control Systems Medical Instrumentation Battery-Powered Instruments Portable Systems 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. EVALUATION KIT AVAILABLE For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com. |
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