MAX11329 Datasheet, PDF(1/37 Page) Maxim Integrated Products – 3Msps, 12-/10-Bit, 8-/16-Channel ADCs with Post-Mux External Signal Conditioning Access

19-6262; Rev 0; 3/12

EVALUATION KIT AVAILABLE

MAX11329âMAX11332

3Msps, 12-/10-Bit, 8-/16-Channel ADCs with

Post-Mux External Signal Conditioning Access

General Description

Benefits and Features

The MAX11329âMAX11332 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

MAX11329âMAX11332 provide external access to the

output of the integrated mux and ADC input, to simplify the

signal conditional circuitry. The MAX11329âMAX11332

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 fea-

tures 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

MAX11329âMAX11332 operate from a 2.35V to 3.6V sup-

ply and consume only 15.2mW at 3Msps.

The MAX11329âMAX11332 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 MAX11329âMAX11332 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 Corporation.

Ordering Information appears at end of data sheet.

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

ï²Any Combination of Single-Ended, Differential

and Pseudo-Differential Pairs Allowed

S Analog Multiplexer with True Differential

Track/Hold

ï² 16-/8-Channel Single-Ended

ï² 8-/4-Channel Fully-Differential Pairs

ï² 15-/8-Channel Pseudo-Differential Relative to

a Common Input

S Externally Accessible Multiplex Output and

ADC Input

S Two Software-Selectable Bipolar Input Ranges

ï² QVREF+/2, QVREF+

S Flexible Input Configuration Across All Channels

S High Accuracy

ï² 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

ï² 15.2mW at 3Msps with 3V Supplies

ï² 2ÂµA Full-Shutdown Current

S External Differential Reference (1V to VDD)

S 48MHz, 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 3Msps 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

For related parts and recommended products to use with this part,

refer to www.maxim-ic.com/MAX11329-MAX11332.related.

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maximâs website at www.maxim-ic.com.

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