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MAX1295AEEI Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX1295AEEI Datasheet(HTML) 1 Page - Maxim Integrated Products |
1 / 20 page For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800. For small orders, phone 1-800-835-8769. General Description The MAX1295/MAX1297 low-power, 12-bit analog-to- digital converters (ADCs) feature a successive-approxi- mation ADC, automatic power-down, fast wake-up (2µs), on-chip clock, +2.5V internal reference, and high-speed 12-bit parallel interface. They operate with a single +2.7V to +3.6V analog supply. Power consumption is only 5.4mW at the maximum sampling rate of 265ksps. Two software-selectable power-down modes enable the MAX1295/MAX1297 to be shut down between conversions; accessing the par- allel interface returns them to normal operation. Powering down between conversions can reduce sup- ply current below 10µA at lower sampling rates. Both devices offer software-configurable analog inputs for unipolar/bipolar and single-ended/pseudo-differen- tial operation. In single-ended mode, the MAX1295 has six input channels and the MAX1297 has two (three input channels and one input channel, respectively, when in pseudo-differential mode). Excellent dynamic performance and low power combined with ease of use and small package size make these con- verters ideal for battery-powered and data-acquisition applications or for other circuits with demanding power- consumption and space requirements. The MAX1295 is offered in a 28-pin QSOP package, while the MAX1297 comes in a 24-pin QSOP. For pin-compatible +5V, 12-bit versions, refer to the MAX1294/MAX1296 data sheet. Applications Industrial Control Systems Data Logging Energy Management Patient Monitoring Data-Acquisition Systems Touchscreens Features o 12-Bit Resolution, ±0.5LSB Linearity o +3V Single-Supply Operation o Internal +2.5V Reference o Software-Configurable Analog Input Multiplexer 6-Channel Single-Ended/ 3-Channel Pseudo-Differential (MAX1295) 2-Channel Single-Ended/ 1-Channel Pseudo-Differential (MAX1297) o Software-Configurable Unipolar/Bipolar Analog Inputs o Low Current 1.8mA (265ksps) 1.0mA (100ksps) 400µA (10ksps) 2µA (shutdown) o Internal 3MHz Full-Power Bandwidth Track/Hold o Parallel 12-Bit Interface o Small Footprint 28-Pin QSOP (MAX1295) 24-Pin QSOP (MAX1297) 265ksps, +3V, 6-/2-Channel, 12-Bit ADCs with +2.5V Reference and Parallel Interface ________________________________________________________________ Maxim Integrated Products 1 19-1530; Rev 0; 9/99 EVALUATION KIT AVAILABLE 28 QSOP ±1 0°C to +70°C MAX1295BCEI INL (LSB) ±0.5 28 QSOP PIN-PACKAGE TEMP. RANGE 0°C to +70°C MAX1295ACEI PART Ordering Information Pin Configurations Typical Operating Circuits appear at end of data sheet. 28 27 26 25 24 23 22 21 20 19 18 17 16 15 1 2 3 4 5 6 7 8 9 10 11 12 13 14 D10 D11 VDD REF REFADJ GND CS COM CH0 CH1 CH2 CH3 CH4 CH5 CLK WR RD INT D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 QSOP TOP VIEW MAX1295 Pin Configurations continued at end of data sheet. 28 QSOP ±0.5 -40°C to +85°C MAX1295AEEI 28 QSOP ±1 -40°C to +85°C MAX1295BEEI 24 QSOP ±0.5 -40°C to +85°C MAX1297AEEG 24 QSOP ±1 -40°C to +85°C MAX1297BEEG 24 QSOP ±1 0°C to +70°C MAX1297BCEG ±0.5 24 QSOP 0°C to +70°C MAX1297ACEG |
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