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MAX1257BETM+ from MAXIM,MAXIM - Dallas Semiconductor

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MAX1257BETM+

Manufacturer: MAXIM, MAXIM/DALLAS

12-Bit, Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports

Partnumber Manufacturer Quantity Availability
MAX1257BETM+,MAX1257BETM MAXIM, MAXIM/DALLAS 28 In Stock

Description and Introduction

12-Bit, Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports The MAX1257BETM+ is a high-speed, 12-bit analog-to-digital converter (ADC) manufactured by Maxim Integrated (formerly Dallas Semiconductor). Below are its key specifications, descriptions, and features:

### **Specifications:**
- **Resolution:** 12-bit  
- **Sampling Rate:** 65Msps (Mega samples per second)  
- **Input Voltage Range:** 1.5Vp-p (differential)  
- **Power Supply:** +3.3V  
- **Power Consumption:** 495mW (typical)  
- **DNL (Differential Nonlinearity):** ±0.5 LSB (max)  
- **INL (Integral Nonlinearity):** ±1.0 LSB (max)  
- **SNR (Signal-to-Noise Ratio):** 68dB (typical at 30MHz input)  
- **SFDR (Spurious-Free Dynamic Range):** 80dB (typical at 30MHz input)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 48-pin TQFP (Thin Quad Flat Pack)  

### **Description:**
The MAX1257BETM+ is a high-performance, low-power, 12-bit ADC designed for applications requiring high-speed data conversion. It features a pipelined architecture with internal track-and-hold (T/H) circuitry, ensuring accurate signal acquisition. The device supports differential analog inputs and provides excellent dynamic performance, making it suitable for communication, imaging, and instrumentation applications.

### **Features:**
- **High-Speed Conversion:** 65Msps sampling rate  
- **Low Power Consumption:** 495mW at full speed  
- **Wide Input Bandwidth:** Up to 300MHz  
- **Differential Inputs:** Reduces noise and improves signal integrity  
- **Internal Voltage Reference:** Eliminates the need for external references  
- **3.3V Single Supply Operation:** Simplifies power supply design  
- **Digital Outputs:** Compatible with 3.3V logic  
- **Power-Down Mode:** Reduces power consumption when idle  
- **On-Chip T/H Circuitry:** Ensures accurate signal sampling  

This ADC is commonly used in applications such as digital receivers, medical imaging, and test equipment where high-speed, high-resolution conversion is required.

Application Scenarios & Design Considerations

12-Bit, Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports

Alternative Part Number

  • TPS62040DGQ --: High-efficiency step-down converter in a similar small package, widely available and pin-compatible in function for many MAX1257 applications.
  • LTC3406ES5 --: Compact synchronous buck regulator with comparable input range and current capability, suitable drop-in functional replacement.
  • AP3402DNTR-G1 --: Low-cost 2A synchronous step-down converter with similar electrical specs and small footprint, good second-source option.
  • AP3402KTR-G1 --: Low-cost 2A step-down converter with similar electrical characteristics and pin-compatible footprint options.

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