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MAX1240CMJA+ Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX1240CMJA+ Datasheet(HTML) 1 Page - Maxim Integrated Products |
1 / 15 page __________________General Description The MAX1240/MAX1241 low-power, 12-bit analog-to- digital converters (ADCs) are available in 8-pin pack- ages. The MAX1240 operates with a single +2.7V to +3.6V supply, and the MAX1241 operates with a single +2.7V to +5.25V supply. Both devices feature a 7.5µs successive-approximation ADC, a fast track/hold (1.5µs), an on-chip clock, and a high-speed, 3-wire ser- ial interface. Power consumption is only 37mW (VDD = 3V) at the 73ksps maximum sampling speed. A 2µA shutdown mode reduces power at slower throughput rates. The MAX1240 has an internal 2.5V reference, while the MAX1241 requires an external reference. The MAX1241 accepts signals from 0V to VREF, and the reference input range includes the positive supply rail. An exter- nal clock accesses data from the 3-wire interface, which connects directly to standard microcontroller I/O ports. The interface is compatible with SPI™, QSPI™, and MICROWIRE™. Excellent AC characteristics and very low power com- bined with ease of use and small package size make these converters ideal for remote-sensor and data- acquisition applications, or for other circuits with demanding power consumption and space require- ments. The MAX1240/MAX1241 are available in 8-pin PDIP and SO packages. Applications Battery-Powered Systems Portable Data Logging Isolated Data Acquisition Process Control Instrumentation ________________________________Features ♦ Single-Supply Operation: +2.7V to +3.6V (MAX1240) +2.7V to +5.25V (MAX1241) ♦ 12-Bit Resolution ♦ Internal 2.5V Reference (MAX1240) ♦ Small Footprint: 8-Pin DIP/SO Packages ♦ Low Power: 3.7µW (73ksps, MAX1240) 3mW (73ksps, MAX1241) 66µW (1ksps, MAX1241) 5µW (power-down mode) ♦ Internal Track/Hold ♦ SPI/QSPI/MICROWIRE 3-Wire Serial Interface ♦ Internal Clock +2.7V, Low-Power, 12-Bit Serial ADCs in 8-Pin SO ________________________________________________________________ Maxim Integrated Products 1 19-1155; Rev 4; 6/10 SPI and QSPI are trademarks of Motorola, Inc. MICROWIRE is a trademark of National Semiconductor Corp. Ordering Information continued at end of data sheet. TOP VIEW 1 2 3 4 8 7 6 5 SCLK CS DOUT GND REF SHDN AIN VDD DIP/SO MAX1240 MAX1241 Pin Configuration Ordering Information EVALUATION KIT AVAILABLE Functional Diagram 7 AIN T/H DOUT 6 1 OUTPUT SHIFT REGISTER CONTROL LOGIC INT CLOCK 12-BIT SAR 8 2 3 5 REF 4 SHDN 2.5V REFERENCE (MAX1240 ONLY) GND SCLK CS MAX1240 MAX1241 VDD *Dice are specified at TA = +25°C, DC parameters only. **Future product—contact factory for availability. /V denotes an automotive qualified part. +Denotes a lead(Pb)-free/RoHS-compliant package. PART* TEMP RANGE PIN- PACKAGE INL (LSB) MAX1240ACPA+ 0 °C to +70°C 8 PDIP ±1/2 MAX1240BCPA+ 0 °C to +70°C 8 PDIP ±1 MAX1240CCPA+ 0 °C to +70°C 8 PDIP ±1 MAX1240ACSA+ 0 °C to +70°C 8 SO ±1 MAX1240BCSA+ 0 °C to +70°C 8 SO ±1/2 MAX1240CCSA+ 0 °C to +70°C 8 SO ±1 MAX1240BC/DDD 0 °C to +70°C Dice* ±1 MAX1240AESA/V+** -40 °C to +85°C 8 SO ±1/2 MAX1240BESA/V+ -40 °C to +85°C 8 SO ±1 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. |
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