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MAX1243BESA Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX1243BESA Datasheet(HTML) 1 Page - Maxim Integrated Products |
1 / 12 page 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. __________________General Description The MAX1242/MAX1243 are low-power, 10-bit analog- to-digital converters (ADCs) available in 8-pin pack- ages. They operate with a single +2.7V to +5.25V supply and feature a 7.5µs successive-approximation ADC, a fast track/hold (1.5µs), an on-chip clock, and a high-speed, 3-wire serial interface. Power consumption is only 3mW (VDD = 3V) at the 73ksps maximum sampling speed. A 2µA shutdown mode reduces power at slower throughput rates. The MAX1242 has an internal 2.5V reference, while the MAX1243 requires an external reference. The MAX1243 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 MAX1242/MAX1243 are available in 8-pin DIP and SO packages. Applications Portable Data Logging Process Control Monitoring Test Equipment Temperature Measurement Isolated Data Acquisition ________________________________Features o +2.7V to +5.25V Single-Supply Operation o 10-Bit Resolution o Internal 2.5V Reference (MAX1242) o Small Footprint: 8-Pin DIP and SO Packages o Low Power: 3.7mW (73ksps, MAX1242) 3mW (73ksps, MAX1243) 66µW (1ksps, MAX1243) 5µW (power-down mode) o Internal Track/Hold o SPI™/QSPI™/Microwire™ 3-Wire Serial Interface o Pin-Compatible 12-Bit Upgrades: MAX1240/MAX1241 +2.7V to +5.25V, Low-Power, 10-Bit Serial ADCs in SO-8 ________________________________________________________________ Maxim Integrated Products 1 19-1156; Rev 2; 6/98 SPI and QSPI are trademarks of Motorola, Inc. Microwire is a trademark of National Semiconductor Corp. Ordering Information continued at end of data sheet. Note: Order the MAX1242A in place of the MAX1242C. Order the MAX1242B in place of the MAX1242D. ________________Functional Diagram 7 AIN T/H DOUT 6 1 5 OUTPUT SHIFT REGISTER CONTROL LOGIC 2.5V REFERENCE MAX1242 ONLY INT CLOCK 10-BIT SAR 8 2 3 REF 4 SHDN SCLK CS MAX1242 MAX1243 VDD GND TOP VIEW 1 2 3 4 8 7 6 5 SCLK CS DOUT GND REF SHDN AIN VDD DIP/SO MAX1242 MAX1243 Pin Configuration _________________Ordering Information ±1 8 Plastic DIP -40°C to +85°C MAX1242BEPA ±1/2 8 Plastic DIP -40°C to +85°C MAX1242AEPA ±1/2 8 SO 0°C to +70°C MAX1242ACSA ±1 ±1 ±1/2 INL (LSB) 8 SO 8 Plastic DIP 8 Plastic DIP PIN- PACKAGE TEMP. RANGE 0°C to +70°C 0°C to +70°C 0°C to +70°C MAX1242BCSA MAX1242BCPA MAX1242ACPA PART |
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