The MAX1377/MAX1379/MAX1383 feature two simulta- neous-sampling, low-power, 12-bit ADCs with serial interface and internal voltage reference.
The MAX1377, MAX1379, and MAX1383 are dual, simultaneous‑sampling, 12‑bit SAR ADCs with a serial interface (SPI/QSPI/MICROWIRE/DSP). They operate from low‑power analog supplies (2.7‑3.6 V for MAX1377, 4.75‑5.25 V for MAX1379/MAX1383) and offer internal or external voltage references. Features include two 2‑mux or differential inputs per ADC, selectable single or dual output modes, and power‑down options that reduce supply current to as low as 1 pA.
Typical applications are motor control, communications, data acquisition, bill validation, and portable instruments. The devices are supplied in a 20‑pin TQFN package and are rated for automotive temperature ranges (‑40 °C to +125 °C). The document provides detailed electrical characteristics, timing specifications, and functional diagrams for system integration.
| Resolution | 12 bits |
|---|---|
| Maximum Sampling Rate per ADC | 1.25 Msps |
| Analog Supply Voltage (MAX1377) | 2.7 V to 3.6 V |
| Analog Supply Voltage (MAX1379/MAX1383) | 4.75 V to 5.25 V |
| Full Power‑Down Current | 1 pA |
| Partial Power‑Down Current (MAX1377) | 2 mA |
| Package Type | 20‑pin TQFN‑EP |
| SINAD (MAX1379/MAX1383) | 71 dB |
| Typical Power Consumption (Normal Operation, MAX1377) | 50 mW |
| Typical Power Consumption (Normal Operation, MAX1379) | 90 mW |
The MAX1377 operates from a 2.7 V to 3.6 V analog supply.
The devices are offered in a 20‑pin TQFN package.
Full power‑down mode reduces the supply current to 1 pA.