The MAX144/MAX145 low-power, 12-bit analog-to-digital converters (ADCs) are available in 8-pin µMAX® and DIP packages. Both devices operate with a single +2.7V to +5.25V supply and feature a 7.4µs successive- approximation ADC, automatic power-down, fast wake-up (2.5µs), an on-chip clock, and a high-speed, 3-wire serial interface. Power consumption is only 3.2mW (VDD = +3.6V) at the maximum sampling rate of 108ksps. At slower throughput rates, the automatic shutdown (0.2µA) further reduces power consumption. The MAX144 provides 2-channel, single-ended operation and accepts input signals from 0 to VREF. The MAX145 accepts pseudo-differential inputs ranging from 0 to VREF. An external clock accesses data-through the 3-wire serial interface, which is SPI™, QSPI™, and MICROWIRE™-compatible. Excellent dynamic performance and low power, combined with ease of use and small package size, make these converters ideal for battery-powered and data-acquisition applications, or for other circuits with demanding power-consumption and space requirements. For pin-compatible 10-bit ADCs, see the MAX157 and MAX159 data sheets.
title | Download file |
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MAX144-MAX145 Data Sheet | MAX144-MAX145.pdf |
Part Number | Resolution (bits) | Input Chan. | Conv. Rate (ksps) | ADC Architecture | Data Bus | Diff/S.E. Input | External VREF (V) | External VREF (V) | Unipolar VIN (V) | THD (dB) | INL (±LSB) | Package/Pins | Budgetary Price |
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ADC | max | min | max | max | See Notes | ||||||||
MAX144 | 12 | 2 | 108 | SAR | SPI | S.E. Only | 0 | 5.25 | 5.25 | -80 | 1 | µMAX/8 PDIP(N)/8 | $7.39 @1k |
MAX145 | 1 | µMAX/8 PDIP(N)/8 | $5.83 @1k | ||||||||||
Part Number | Status | Recommended Replacement | Package | Temp | RoHS |
---|---|---|---|---|---|
MAX145ACPA | No Longer Available | MAX145ACPA+ | PDIP(N),;8 pin;79.7 mm² | 0°C to +70°C | No |
MAX145ACPA+ | Active | PDIP(N),;8 pin;79.7 mm² | 0°C to +70°C | Lead Free | |
MAX145ACUA | No Longer Available | MAX145ACUA+ | µMAX,;8 pin;15.6 mm² | 0°C to +70°C | No |
MAX145ACUA+ | Active | µMAX,;8 pin;15.6 mm² | 0°C to +70°C | Lead Free | |
MAX145ACUA+T | Active | µMAX,;8 pin;15.6 mm² | 0°C to +70°C | Lead Free | |
MAX145ACUA-T | No Longer Available | MAX145ACUA+T | µMAX,;8 pin;15.6 mm² | 0°C to +70°C | No |
MAX145AEPA | No Longer Available | MAX145AEPA+ | PDIP(N),;8 pin;79.7 mm² | -40°C to +85°C | No |
MAX145AEPA+ | Active | PDIP(N),;8 pin;79.7 mm² | -40°C to +85°C | Lead Free | |
MAX145AEUA | No Longer Available | MAX145AEUA+ | µMAX,;8 pin;15.6 mm² | -40°C to +85°C | No |
MAX145AEUA+ | Active | µMAX,;8 pin;15.6 mm² | -40°C to +85°C | Lead Free | |
Part Number | Status | Recommended Replacement | Package | Temp | RoHS |
MAX145AEUA+T | Active | µMAX,;8 pin;15.6 mm² | -40°C to +85°C | Lead Free | |
MAX145AEUA-T | No Longer Available | MAX145AEUA+T | µMAX,;8 pin;15.6 mm² | -40°C to +85°C | No |
MAX145BCPA | No Longer Available | MAX145BCPA+ | PDIP(N),;8 pin;79.7 mm² | 0°C to +70°C | No |
MAX145BCPA+ | Active | PDIP(N),;8 pin;79.7 mm² | 0°C to +70°C | Lead Free | |
MAX145BCUA | No Longer Available | MAX145BCUA+ | µMAX,;8 pin;15.6 mm² | 0°C to +70°C | No |
MAX145BCUA+ | Active | µMAX,;8 pin;15.6 mm² | 0°C to +70°C | Lead Free | |
MAX145BCUA+T | Active | uMAX;8 pin | 0°C to +70°C | See data sheet | |
MAX145BCUA-T | No Longer Available | MAX145BCUA+T | uMAX;8 pin | 0°C to +70°C | See data sheet |
MAX145BEPA | No Longer Available | MAX145BEPA+ | PDIP(N),;8 pin;79.7 mm² | -40°C to +85°C | No |
MAX145BEPA+ | Active | PDIP(N),;8 pin;79.7 mm² | -40°C to +85°C | Lead Free | |
Part Number | Status | Recommended Replacement | Package | Temp | RoHS |
MAX145BEUA | No Longer Available | MAX145BEUA+ | µMAX,;8 pin;15.6 mm² | -40°C to +85°C | No |
MAX145BEUA+ | Active | µMAX,;8 pin;15.6 mm² | -40°C to +85°C | Lead Free | |
MAX145BEUA+T | Active | uMAX;8 pin | -40°C to +85°C | See data sheet | |
MAX145BEUA-T | No Longer Available | MAX145BEUA+T | uMAX;8 pin | -40°C to +85°C | See data sheet |