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MAX1271BCAI from MAX,MAXIM - Dallas Semiconductor

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MAX1271BCAI

Manufacturer: MAX, MAXIM

Multirange / +5V / 8-Channel / Serial 12-Bit ADCs

Partnumber Manufacturer Quantity Availability
MAX1271BCAI MAX, MAXIM 267 In Stock

Description and Introduction

Multirange / +5V / 8-Channel / Serial 12-Bit ADCs The MAX1271BCAI is a 12-bit, multichannel, successive approximation analog-to-digital converter (ADC) manufactured by Maxim Integrated (now part of Analog Devices). Below are its specifications, descriptions, and features based on factual information:

### **Specifications:**
- **Resolution:** 12-bit  
- **Channels:** 8 single-ended or 4 differential  
- **Conversion Time:** 3µs (max)  
- **Throughput Rate:** 333ksps (max)  
- **Input Voltage Range:**  
  - **Single-Ended:** 0V to VREF  
  - **Differential:** ±VREF  
- **Reference Voltage (VREF):** 4.096V (internal) or external (2.5V to VDD)  
- **Supply Voltage (VDD):** +5V ±10%  
- **Power Consumption:**  
  - **Operating:** 5.5mA (typ)  
  - **Shutdown Mode:** 2µA (max)  
- **Interface:** SPI/QSPI/MICROWIRE-compatible serial interface  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 28-pin SSOP  

### **Descriptions:**
The MAX1271BCAI is a high-speed, low-power, 12-bit ADC with an internal track/hold, voltage reference, and serial interface. It supports both single-ended and differential input configurations, making it suitable for industrial control, data acquisition, and instrumentation applications.

### **Features:**
- **12-Bit Resolution** with no missing codes  
- **Low Power:** 5.5mA operating current, 2µA shutdown mode  
- **Flexible Input Configuration:** 8 single-ended or 4 differential channels  
- **Internal 4.096V Reference** or external reference support (2.5V to VDD)  
- **High-Speed Serial Interface** (SPI/QSPI/MICROWIRE-compatible)  
- **Software-Configurable Unipolar/Bipolar Inputs**  
- **Internal Track/Hold Circuit** (3µs conversion time)  
- **Wide Operating Temperature Range:** -40°C to +85°C  

The MAX1271BCAI is designed for precision measurement applications requiring high-speed, low-power ADCs with multiple input options.

Application Scenarios & Design Considerations

Multirange / +5V / 8-Channel / Serial 12-Bit ADCs

Alternative Part Number

  • AD7874ANZ --: 12-bit successive-approximation ADC with similar speed and parallel interface, widely available and pin-functionally comparable for many designs.
  • LTC1272CCN --: 12-bit 250ksps sampling ADC with parallel output, close electrical equivalent to the MAX1271 family and a common drop-in candidate.
  • ADS7805U --: 12-bit parallel-output ADC with comparable throughput and input range, suitable as a functional replacement when layout changes are acceptable.

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