Overview
The MAX1422CCM+TD, produced by Analog Devices Inc./Maxim Integrated, is a 12-bit, 20Msps, 3.3V, low-power analog-to-digital converter (ADC). This device features a fully differential input, pipelined, 12-stage ADC architecture with wideband track-and-hold (T/H) and digital error correction. It is optimized for low-power, high dynamic performance applications in imaging and digital communications. 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 |
|---|---|
| Resolution | 12 bits |
| Sampling Frequency | 20 Msps |
| Supply Voltage | 3.3V |
| Power Consumption | 137 mW (typ) |
| Signal-to-Noise Ratio (SNR) | 67 dB (typ) at fIN = 5 MHz |
| Input Bandwidth | 400 MHz small signal -3dB bandwidth |
| Reference Voltage | Internal 2.048V precision bandgap reference |
| Package | 48-pin TQFP, 7mm x 7mm x 1.4mm |
| 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
- Low power consumption: 130mW (reference shutdown mode), 10µW (shutdown mode)
- Parallel, offset binary, CMOS-compatible three-state outputs
- Flexible reference structure for internal or external reference application
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 20 Msps.
- What is the power consumption of the MAX1422?
The MAX1422 consumes 137 mW of power.
- What is the signal-to-noise ratio (SNR) of the MAX1422 at 5 MHz input frequency?
The SNR is 67 dB (typ) at a 5 MHz input frequency.
- What is the input bandwidth of the MAX1422?
The input bandwidth is 400 MHz small signal -3dB bandwidth.
- 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 is the package type and size of the MAX1422?
The MAX1422 is available in a 48-pin TQFP package, 7mm x 7mm x 1.4mm.
- 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).
- What are some typical applications of the MAX1422?
Typical applications include Medical Ultrasound Imaging, CCD Pixel Processing, Data Acquisition, and Radar IF and Baseband Digitization.
