Product category: Analogue and Mixed Signal ICs
News Release from: Maxim Integrated Products | Subject: MAX1300-MAX1303 and MAX1032-MAX1035
Edited by the Electronicstalk Editorial Team on 05 January 2007
A/D convertors handle sensor
overvoltages
Family of 16/14bit ADCs is the first to offer a +/-12V input range.
Maxim Integrated Products has released the MAX1300-MAX1303 and MAX1032-MAX1035 family of 16/14bit ADCs These new devices are the first to have the +/-12V input range
This article was originally published on Electronicstalk on 27 Aug 2002 at 8.00am (UK)
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Each input channel can be programmed with seven different input ranges for single-ended inputs and three different input ranges for differential inputs.
The programmable analogue input-voltage ranges are +/-24, +/-12, +/-6, +/-3, 0 to +12, -12 to 0, 0 to +6, and -6 to 0V.
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Traditionally, competitive analogue-to-digital convertors processed up to +/-10V while putting out an FSR value above that.
"This new family of ADCs is the industry's first to have a +/-12V voltage-input range, which allows the user to detect and process sensor overvoltage conditions", commented Chris Mostoller, Business Manager for precision ADC products.
Mostoller continued: "Designers now have the unprecedented flexibility of remotely programming each input to a unique input-voltage range".
"They will also save many external protection components because each input is protected from transients up to +/-16.5V".
This ADC family offers up to eight single-ended inputs or four differential inputs, all of which are +/-16.5V overvoltage tolerant.
compared with traditional designs, this capability gives the customer more flexibility when selecting an ADC for a design, and easy reuse of their design across different platforms.
The new ADCs allow accurate measurement of temp sensors, Wheatstone bridges, pressure sensors, PLC, 4 to 20mA loop under normal operating conditions, and overvoltage conditions using the +/-12V analogue input-voltage range.
Mostoller explained "Other data convertors output a full-scale reading when the sensor is either in an overvoltage condition or when it is broken".
"The wide input-voltage range of our ADCs will help the user identify the state of the sensor".
Excellent AC performance (THD of -97dB, typical) and DC accuracy (+/-2LSB INL, maximum) make the devices ideal for industrial process control, instrumentation, and data acquisition systems.
The MAX1300-MAX1303 and MAX1032-MAX1035 operate from a single +5V supply and feature a separate DVDD pin, which allows direct interfacing to +2.7 to +5.25V digital logic.
An internal or external 4.096V reference determines the full-scale analogue-input range.
Packaging varies by the parts.
The 16bit, eight-channel ADCs with a +/-12V/+/-Vref input range (MAX1300/MAX1302) are available in 24-pin TSSOPs, whereas the 16bit, four-channel devices with a +/-12V/+/-Vref input range (MAX1301/MAX1303) are available in 20-pin TSSOPs.
The 14bit, eight-channel ADCs with a +/-12V/+/-Vref input range (MAX1032/MAX1034) are available in 24-pin TSSOPs, and the 14bit, four-channel parts with a +/-12V/+/-Vref input range (MAX1033/MAX1035) are available in 20-pin TSSOPs.
Prices for these ADCs start at US $17.95 (1000-up, FOB USA).
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