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500ksps, 12-/10-Bit, 4-/8-/16-Channel ADCs with
Post-Mux External Signal Conditioning Access
MAX11335–MAX11340
General Description
Benefits and Features
● Highly Integrated Precision ADC Saves Space while
The MAX11335–MAX11340 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
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 SampleSet™
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.
Retaining Flexibility
• ±1 LSB INL, ±1 LSB DNL, No Missing Codes
• 70dB SINAD at 100kHz
• 500ksps Conversion Rate with No Pipeline Delay
● 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
● Two Software-Selectable Bipolar Input Ranges
(±V
+/2, ±V
+)
REF
REF
● External Differential Reference (1V to V
● 32-Pin, 5mm x 5mm TQFN Package
● SampleSet™ Technology Brings Extreme Flexibility
to Program Input Configurations Per Channel and
Sampling Sequence, Optimizes Interface to the
Microcontroller
)
DD
External pins provide access to the output of the
multiplexer and ADC inputs to simplify multichannel signal
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 MAX11335–MAX11340 operate from a 2.35V to 3.6V
supply and consume only 4.2mW at 500ksps.
• User-Defined Channel Sequence with Maximum
Length of 256
• Scan Modes, Internal Averaging, and Internal Clock
• 16-Entry First-In/First-Out (FIFO)
● Post-Mux Signal Access Allows for External Signal
Conditioning Between the Mux and ADC For
Differential Signals
• Externally Accessible Multiplex Output and ADC
Input
● Low Power Consumption Extends Battery Life for
Portable Applications
The MAX11335–MAX11340 include AutoShutdown™, 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, QSPI™, and MICROWIRE devices
without external logic.
®
• 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
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.
● Easy to Interface with Most Microcontrollers
• 16MHz, 3-Wire SPI-/QSPI-/MICROWIRE-/DSP-
Compatible Serial Interface
The MAX11335–MAX11340 are available in 32-pin, 5mm
x 5mm, TQFN packages and operate over the -40°C to
+125°C temperature range.
Applications
SampleSet and AutoShutdown are trademarks of Maxim
Integrated Products, Inc.
● High-Speed Data
● Medical Instrumentation
● Battery-Powered
Instruments
Acquisition Systems
High-Speed Closed-Loop
Systems
QSPI is a trademark of Motorola, Inc.
●
●
MICROWIRE is a registered trademark of National
Semiconductor Corp.
● Portable Systems
Industrial Control Systems
Ordering Information appears at end of data sheet.
19-6468; Rev 2; 6/21
©
2021 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners.
One Analog Way, Wilmington, MA 01887 U.S.A.
|
Tel: 781.329.4700
|
© 2021 Analog Devices, Inc. All rights reserved.
19-6468; Rev 1; 12/14
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