Sunnyvale, Calif.—Maxim says its MAX1300-MAX1303 and MAX1032-MAX1035 family of 14- and 16-bit ADCs are the first with a ±12-volt input range, thus raising the performance and flexibility bars for temperature sensor, Wheatstone bridge, pressure sensor, and 4-to-20 mA loop measurements.
Competing devices process ±10 volt signals, says Maxim, and over-ranging inputs generate a full-scale output. “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,” said Chris Mostoller, Business
Manager for precision ADC products. “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.”
The MAX1300 are 16-bit devices with 8/4 (eight single-ended or 4 differential) channels and ±12-volt multirange inputs; the MAX1301 are 4/2 channel devices. Similarly, the MAX1302 and MAX1303 offer the same architecture, but with ±Vref multirange inputs (internal or external 4.096-volt reference determines the full-scale analog input range). In like respect, the MAX1032 and MAX1033, and the MAX1034-1035, are 14-bit ADCs providing the same functionality, respectively.
Each input channel can be programmed with seven different input ranges for single-ended inputs and three different input ranges for differential inputs. The ranges include ±24, ±12, ±6, ±3, 0 to +12, -12 to 0, 0 to +6, and -6 to 0 volts.
to facilitate use across different platforms. The converters feature a THD of -97 dB, typical, and
a DC accuracy of ±2 LSB INL, maximum. The MAX1300-MAX1303 and MAX1032-MAX1035 operate from a single +5-volt supply and feature a separate DVDD pin, which allows direct interfacing to
2.7-to-5.25 volt digital logic.
Click here for the MAX1300-1301's datasheet, here for the MAX1302-1303's, here for the MAX1032-1033's, and here for the MAX1034-1035's. The 16-bit, 8-channel ADCs with a ±12V/±VREF input range (MAX1300/MAX1302) are available in a 24-pin
TSSOP, while the 16-bit, 4-channel devices with a
±12V/±VREF input range (MAX1301/MAX1303) are available in a 20-pin TSSOP. The 14-bit, 8-channel ADCs with a ±12V/±VREF input range
(MAX1032/MAX1034) are available in a 24-pin
TSSOP, and the 14-bit, 4-channel parts with a
±12V/±VREF input range (MAX1033/MAX1035) are available in a 20-pin TSSOP. Prices for these ADCs start at $17.95 each (1000-up, FOB USA). The MAX1301, 1303, 1033, and 1035 are now available; the others will be released at a future date; check the factory for availability.
Maxim Integrated Products , 1-800-998-8800, www.maxim-ic.com