2.7V to 3.6V and 4.5V to 5.5V, Low-Power, 4-/12-Channel, 2-Wire Serial, 12-Bit ADCs The MAX1239EEE is a 12-bit, multichannel, successive approximation analog-to-digital converter (ADC) manufactured by Maxim Integrated (now part of Analog Devices).  

### **Key Specifications:**  
- **Resolution:** 12-bit  
- **Channels:** 8 single-ended or 4 differential  
- **Conversion Time:** 3µs (max)  
- **Sampling Rate:** 333ksps (max)  
- **Input Voltage Range:** 0V to VREF (single-ended), ±VREF/2 (differential)  
- **Reference Voltage:** Internal 4.096V or external (2.5V to VDD)  
- **Supply Voltage:** +5V ±10%  
- **Power Consumption:** 5.5mW (typical)  
- **Interface:** SPI/QSPI/MICROWIRE-compatible serial  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 16-pin QSOP  

### **Descriptions and Features:**  
- **True Differential Inputs:** Reduces noise and improves accuracy in industrial environments.  
- **Low Power:** Auto shutdown mode reduces power consumption.  
- **Internal Reference:** 4.096V ±1% with low drift (15ppm/°C typical).  
- **Flexible Input Configuration:** Supports both single-ended and differential inputs.  
- **High-Speed Serial Interface:** Compatible with SPI, QSPI, and MICROWIRE.  
- **Internal Track/Hold:** Eliminates the need for an external sample-and-hold circuit.  
- **Applications:** Data acquisition, industrial control, medical instruments, and battery-powered systems.  

The MAX1239EEE is designed for precision measurement applications requiring high-speed, low-power, and multi-channel ADC functionality.

2.7V to 3.6V and 4.5V to 5.5V, Low-Power, 4-/12-Channel, 2-Wire Serial, 12-Bit ADCs