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MAX1237EUA+ Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX1237EUA+ Datasheet(HTML) 1 Page - Maxim Integrated Products |
1 / 22 page For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. General Description The MAX1236–MAX1239 low-power, 12-bit, multichan- nel analog-to-digital converters (ADCs) feature internal track/hold (T/H), voltage reference, clock, and an I2C-compatible 2-wire serial interface. These devices operate from a single supply of 2.7V to 3.6V (MAX1237/ MAX1239) or 4.5V to 5.5V (MAX1236/MAX1238) and require only 670µA at the maximum sampling rate of 94.4ksps. Supply current falls below 230µA for sam- pling rates under 46ksps. AutoShutdown™ powers down the devices between conversions, reducing sup- ply current to less than 1µA at low throughput rates. The MAX1236/MAX1237 have four analog input chan- nels each, while the MAX1238/MAX1239 have 12 ana- log input channels each. The fully differential analog inputs are software configurable for unipolar or bipolar, and single-ended or differential operation. The full-scale analog input range is determined by the internal reference or by an externally applied reference voltage ranging from 1V to VDD. The MAX1237/ MAX1239 feature a 2.048V internal reference and the MAX1236/MAX1238 feature a 4.096V internal reference. The MAX1236/MAX1237 are available in an 8-pin µMAX® package. The MAX1238/MAX1239 are available in a 16- pin QSOP package. The MAX1236–MAX1239 are guar- anteed over the extended temperature range (-40°C to +85°C). For pin-compatible 10-bit parts, refer to the MAX1136–MAX1139 data sheet. For pin-compatible 8-bit parts, refer to the MAX1036–MAX1039 data sheet. Applications Features ♦ High-Speed I2C-Compatible Serial Interface 400kHz Fast Mode 1.7MHz High-Speed Mode ♦ Single-Supply 2.7V to 3.6V (MAX1237/MAX1239) 4.5V to 5.5V (MAX1236/MAX1238) ♦ Internal Reference 2.048V (MAX1237/MAX1239) 4.096V (MAX1236/MAX1238) ♦ External Reference: 1V to VDD ♦ Internal Clock ♦ 4-Channel Single-Ended or 2-Channel Fully Differential (MAX1236/MAX1237) ♦ 12-Channel Single-Ended or 6-Channel Fully Differential (MAX1238/MAX1239) ♦ Internal FIFO with Channel-Scan Mode ♦ Low Power 670µA at 94.4ksps 230µA at 40ksps 60µA at 10ksps 6µA at 1ksps 0.5µA in Power-Down Mode ♦ Software-Configurable Unipolar/Bipolar ♦ Small Packages 8-Pin µMAX (MAX1236/MAX1237) 16-Pin QSOP (MAX1238/MAX1239) 2.7V to 3.6V and 4.5V to 5.5V, Low-Power, 4-/12-Channel, 2-Wire Serial, 12-Bit ADCs ________________________________________________________________ Maxim Integrated Products 1 Ordering Information 19-2333; Rev 5; 2/09 PART TEMP RANGE PIN- PACKAGE I2C SLAVE ADDRESS MAX1236EUA+ -40°C to +85°C 8 µMAX 0110100 MAX1237EUA+ -40°C to +85°C 8 µMAX 0110100 MAX1238EEE+ -40°C to +85°C 16 QSOP 0110101 MAX1239EEE+ -40°C to +85°C 16 QSOP 0110101 Pin Configurations and Typical Operating Circuit appear at end of data sheet. AutoShutdown is a trademark of Maxim Integrated Products, Inc. µMAX is a registered trademark of Maxim Integrated Products, Inc. PART INPUT CHANNELS INTERNAL REFERENCE (V) SUPPLY VOLTAGE (V) INL (LSB) MAX1236 4 4.096 4.5 to 5.5 ±1 MAX1237 4 2.048 2.7 to 3.6 ±1 MAX1238 12 4.096 4.5 to 5.5 ±1 MAX1239 12 2.048 2.7 to 3.6 ±1 Handheld Portable Applications Medical Instruments Battery-Powered Test Equipment Solar-Powered Remote Systems Received-Signal-Strength Indicators System Supervision Selector Guide +Denotes a lead(Pb)-free/RoHS-compliant package. |
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