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
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
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 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.
16-/8-/4-Channel Single-Ended
8-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
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
MAX11335–MAX11340 operate from a 2.35V to 3.6V sup-
ply and consume only 4.2mW at 500ksps.
QV
/2, QV
REF+
REF+
S Flexible Input Configuration Across All Channels
S High Accuracy
Q1 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
4.2mW at 500ksps with 3V Supplies
2µA Full-Shutdown Current
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
S External Differential Reference (1V to V
)
DD
S 8MHz, 3-Wire SPI-/QSPI-/MICROWIRE-/DSP-
Compatible Serial Interface
M
S Wide -40NC to +125NC Operation
directly connects to SPI, QSPIK, and MICROWIRE
devices without external logic.
S Space-Saving, 32-Pin, 5mm x 5mm TQFN Packages
S 500ksps Conversion Rate, No Pipeline Delay
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.
Applications
High-Speed Data Acquisition Systems
High-Speed Closed-Loop Systems
Industrial Control Systems
Medical Instrumentation
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.
Battery-Powered Instruments
Portable Systems
For related parts and recommended products to use with this part,
refer to www.maximintegrated.com/MAX11335-MAX11340.related.
Ordering Information appears at end of data sheet.
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 0; 9/12
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