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EVALUATION KIT AVAILABLE
MAX11129–MAX11132
3Msps, Low-Power, Serial 12-/10-Bit, 8-/16-Channel ADCs
General Description
Benefits and Features
The MAX11129–MAX11132 are 12-/10-bit with external reference and industry-leading 1.5MHz, full linear bandwidth, high speed, low-power, serial output successive approximation register (SAR) analog-to-digital converters (ADCs). The MAX11129–MAX11132 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.
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 this 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 MAX11129– MAX11132 operate from a 2.35V to 3.6V supply and consume only 15.2mW at 3Msps.
The MAX11129–MAX11132 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 converters ideal for portable battery-powered data-acquisition applications, and for other applications that demand low power consumption and small space.
The MAX11129–MAX11132 are available in 28-pin, 5mm x 5mm, TQFN packages and the MAX11131 is available in a 28-pin TSSOP package. All devices 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 Corporation.
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 Analog Multiplexer with True Differential
Track/Hold 16-/8-Channel Single-Ended 8-/4-Channel Fully-Differential Pairs 15-/8-Channel Pseudo-Differential Relative to a Common Input S Two Software-Selectable Bipolar Input Ranges QVREF+/2, QVREF+ S Flexible Input Configuration Across All Channels S High Accuracy Q1 LSB INL, Q1 LSB DNL, No Missing Codes Over Temperature Range S 70dB SINAD Guaranteed at 500kHz Input Frequency S 1.5V to 3.6V Wide Range I/O Supply Allows the Serial Interface to Connect Directly to 1.8V, 2.5V, or 3.3V Digital Systems S 2.35V to 3.6V Supply Voltage S Longer Battery Life for Portable Applications Low Power 15.2mW at 3Msps with 3V Supplies 2µA Full-Shutdown Current S External Differential Reference (1V to VDD) S 48MHz, 3-Wire SPI-/QSPI-/MICROWIRE-/DSPCompatible Serial Interface S Wide -40NC to +125NC Operation S Space-Saving, 28-Pin, 5mm x 5mm TQFN Packages S 3Msps Conversion Rate, No Pipeline Delay S 12-/10-Bit Resolution
Applications
High-Speed Data Acquisition Systems
High-Speed Closed-Loop Systems
Industrial Control Systems
Medical Instrumentation
Battery-Powered Instruments
Portable Systems
Ordering Information appears at end of data sheet.
For related parts and recommended products to use with this part, refer to www.maximintegrated.com/MAX11129.related.
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
19-6026; Rev 5; 9/12
MAX11129–MAX11132
3Msps, Low-Power, Serial 12-/10-Bit, 8-/16-Channel ADCs
ABSOLUTE MAXIMUM RATINGS
VDD to GND..............................................................-0.3V to +4V 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/Output Current (all pins)............................................50mA
Continuous Power Dissipation (TA = +70NC) TQFN (derate 34.4mW/NC above +70NC)..................2758mW TSSOP (derate 27mW/NC above +70NC)...................2162mW Operating Temperature Range......................... -40NC to +125NC Junction Temperature......................................................+150NC Storage Temperature Range............................. -65NC to +150NC Lead T.