Overview
The MAX1422CCM+D, produced by Analog Devices Inc./Maxim Integrated, is a 12-bit, 20Msps, 3.3V, low-power analog-to-digital converter (ADC). This device is optimized for low-power, high dynamic performance applications in imaging and digital communications. It features a fully differential input, pipelined, 12-stage ADC architecture with wideband track-and-hold (T/H) and digital error correction, incorporating a fully differential signal path. The MAX1422 operates from a single 3.3V supply, consuming only 137mW while delivering a 67dB (typ) signal-to-noise ratio (SNR) at a 5MHz input frequency and a 20Msps sampling frequency.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Resolution | 12-bit | |
| Sampling Frequency | 20Msps | |
| Supply Voltage | 3.3V | |
| Power Consumption | 137mW | |
| Signal-to-Noise Ratio (SNR) | 67dB (typ) at fIN = 5MHz | |
| Input Bandwidth | 400MHz (small signal -3dB bandwidth) | |
| Internal Reference Voltage | 2.048V | |
| Package Type | 48-pin TQFP | |
| Operating Temperature Range | Commercial: 0°C to +70°C, Extended Industrial: -40°C to +85°C |
Key Features
- Single 3.3V Power Supply
- Internal 2.048V Precision Bandgap Reference
- Differential Wideband Input T/H Amplifier
- Power-Down Modes: Reference Power-Down and Full Shutdown
- Parallel, Offset Binary, CMOS-Compatible Three-State Outputs
- Space-Saving 48-Pin TQFP Package
Applications
- Medical Ultrasound Imaging
- CCD Pixel Processing
- Data Acquisition
- Radar IF and Baseband Digitization
Q & A
- What is the resolution of the MAX1422 ADC?
The MAX1422 is a 12-bit analog-to-digital converter.
- What is the sampling frequency of the MAX1422?
The MAX1422 has a sampling frequency of 20Msps.
- What is the power consumption of the MAX1422?
The MAX1422 consumes 137mW of power.
- What is the signal-to-noise ratio (SNR) of the MAX1422 at 5MHz input frequency?
The SNR is 67dB (typ) at a 5MHz input frequency.
- What is the input bandwidth of the MAX1422?
The small signal -3dB bandwidth is 400MHz.
- Does the MAX1422 have an internal reference voltage?
Yes, it has an internal 2.048V precision bandgap reference.
- What are the power-down modes available in the MAX1422?
The MAX1422 features reference power-down and full shutdown modes.
- What type of package does the MAX1422 come in?
The MAX1422 is available in a 48-pin TQFP package.
- What are the operating temperature ranges for the MAX1422?
The operating temperature ranges are commercial (0°C to +70°C) and extended industrial (-40°C to +85°C).
- Can the MAX1422 be used with single-ended inputs?
Yes, the fully-differential input stage can be operated with single-ended inputs.
