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MAX192ACWP

製品説明
仕様・特性

19-0247; Rev. 1; 4/97 Low-Power, 8-Channel, Serial 10-Bit ADC The MAX192 is a low-cost, 10-bit data-acquisition system that combines an 8-channel multiplexer, high-bandwidth track/hold, and serial interface with high conversion speed and ultra-low power consumption. The device operates with a single +5V supply. The analog inputs are software configurable for single-ended and differential (unipolar/bipolar) operation. The 4-wire serial interface connects directly to SPI™, QSPI™, and Microwire™ devices, without using external logic. A serial strobe output allows direct connection to TMS320 family digital signal processors. The MAX192 uses either the internal clock or an external serialinterface clock to perform successive approximation A/D conversions. The serial interface can operate beyond 4MHz when the internal clock is used. The MAX192 has an internal 4.096V reference with a drift of ±30ppm typical. A reference-buffer amplifier simplifies gain trim and two sub-LSBs reduce quantization errors. The MAX192 provides a hardwired SHDN pin and two software-selectable power-down modes. Accessing the serial interface automatically powers up the device, and the quick turn-on time allows the MAX192 to be shut down between conversions. By powering down between conversions, supply current can be cut to under 10µA at reduced sampling rates. The MAX192 is available in 20-pin DIP and SO packages, and in a shrink-small-outline package (SSOP) that occupies 30% less area than an 8-pin DIP. The data format provides hardware and software compatibility with the MAX186/MAX188. For anti-aliasing filters, consult the data sheets for the MAX291–MAX297. o 8-Channel Single-Ended or 4-Channel Differential Inputs o Single +5V Operation o Low Power: 1.5mA (operating) 2µA (power-down) o Internal Track/Hold, 133kHz Sampling Rate o Internal 4.096V Reference o 4-Wire Serial Interface is Compatible with SPI, QSPI, Microwire, and TMS320 o 20-Pin DIP, SO, SSOP Packages o Pin-Compatible 12-Bit Upgrade (MAX186/MAX188) _______________Ordering Information PART TEMP. RANGE MAX192ACPP 0°C to +70°C PIN-PACKAGE INL (LSB) 20 Plastic DIP ±1/2 MAX192BCPP MAX192ACWP MAX192BCWP MAX192ACAP MAX192BCAP MAX192AEPP MAX192BEPP MAX192AEWP MAX192BEWP MAX192AEAP MAX192BEAP MAX192AMJP MAX192BMJP 0°C to +70°C 0°C to +70°C 0°C to +70°C 0°C to +70°C 0°C to +70°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -55°C to +125°C -55°C to +125°C 20 Plastic DIP 20 Wide SO 20 Wide SO 20 SSOP 20 SSOP 20 Plastic DIP 20 Plastic DIP 20 Wide SO 20 Wide SO 20 SSOP 20 SSOP 20 CERDIP 20 CERDIP ±1 ±1/2 ±1 ±1/2 ±1 ±1/2 ±1 ±1/2 ±1 ±1/2 ±1 ±1/2 ±1 ________________________Applications Automotive Pen-Entry Systems Consumer Electronics Portable Data Logging Robotics Battery-Powered Instruments, Battery Management Medical Instruments ___________________Pin Configuration TOP VIEW CH0 1 20 VDD CH1 2 19 SCLK 18 CS CH2 3 CH3 4 MAX192 17 DIN See last page for Typical Operating Circuit. CH4 5 16 SSTRB CH5 6 15 DOUT CH6 7 ____________________________Features 14 DGND CH7 8 13 AGND AGND 9 SHDN 10 SPI and QSPI are trademarks of Motorola Corp. Microwire is a trademark of National Semiconductor Corp. 12 REFADJ 11 VREF DIP/SO/SSOP ________________________________________________________________ Maxim Integrated Products 1 For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800. For small orders, phone 408-737-7600 ext. 3468. MAX192 ________________General Description

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