MAX1329 Industry's First 16-Bit Data-AcquisiTIon System with All Analog Circuitry for Sensor ExcitaTIon and µC Support FuncTIons
The MAX1329 is a low-power data-acquisiTIon system (DAS) that integrates precision data converters for signal conditioning and sensor excitation. This product provides higher performance and cost savings than the conventional microcontroller configuration. These features are achieved by integrating all of the analog circuitry necessary for handheld measurement applications in the MAX1329. This device is ideal for use in battery-powered / portable devices and data acquisition systems. MAX1329 pdf, MAX1329 datasheet
Low-Power Data-Acquisition System with Precision Data Converters
SUNNYVALE, CA—January 7, 2009—Maxim Integrated Products (NASDAQ: MXIM) introduces the MAX1329, a low-power data-acquisition system (DAS) that integrates precision data converters for signal conditioning and sensor excitation. The MAX1329 features a 12- / 16-bit analog-to-digital converter (ADC), dual 12-bit force-sense digital-to-analog converters (DACs), and voltage references. The 12-bit ADC's fast 300ksps conversion rate is ideal for profiling fast- decaying transient signals, such as those from a blood glucose sensor. For greater resolution, internal dithering and digital signal processing extend the ADC's natural 12-bit resolution to 16-bits. High-accuracy, internal 12-bit DACs (± 2 LSB INL , ± 1 DNL) with fast 10µs (max) settling times are also included for sensor excitation. These features support the intelligent microcontroller (µC) interface's seamless connection to a low-cost microcontroller, which completes the high-performance closed-looped system used in applications suc h as battery-powered / portable devices and data-acquisition systems.
In addition to the ADC, DACs, and references, the MAX1329 integrates analog support blocks ideal for portable DASs. These analog blocks include operational amplifiers, a 16: 1 input multiplexer, a programmable-gain amplifier (PGA), and low-leakage single -pole / double-throw (SPDT) and single-pole / single-throw (SPST) solid-state switches. The 1V / V to 8V / V PGA provides a wide, dynamic measurement range to measure low-level signals. An integrated oscillator provides a 32kHz clock for timekeeping, and a configurable frequency-locked loop (FLL) generates the high-speed clock necessary for driving a host µC. Other support features include dual voltage monitors, temperature measurement (internal and external temperature sensors), user -programmable general-purpose I / Os that can be used to output system interrupts, control switches, and drive shutdown. The high integration of this device simplifies the design process, saves board space, and offers designers much greater flexibility in their selec tion of microcontrollers.
Optimized for battery-powered applications, the MAX1329 operates from a + 1.8V to + 3.6V digital supply and a + 2.7V to + 5.5V analog supply. Additionally, an on-chip charge pump provides a + 5V supply up to 25mA to power other circuitry. With all of the analog blocks enabled, the MAX1329 has a quiescent supply current of 3.75mA (typ). This drops to 0.5µA (typ) in shutdown mode.
The MAX1329 is specified for the extended temperature range (-40 ° C to + 85 ° C) and is available in a 6mm x 6mm, 40-pin TQFN package. Prices start at $ 7.49 (1000-up, FOB USA).
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