Overview
The MAX1449EHJ+T is a 10-bit, 105Msps (mega-samples per second), single 3.3V, low-power analog-to-digital converter (ADC) produced by Analog Devices Inc./Maxim Integrated. This ADC features a fully differential input, a pipelined 10-stage ADC architecture with wideband track-and-hold (T/H), and digital error correction incorporating a fully differential signal path. It is optimized for low-power, high-dynamic performance in various applications such as imaging and digital communications. The device operates from a single 2.7V to 3.6V supply, consuming only 186mW while delivering a 58.5dB (typical) signal-to-noise ratio (SNR) at a 20MHz input frequency.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 10 bits |
| Sampling Rate | 105 Msps |
| Supply Voltage Range | 2.7V to 3.6V |
| Operating Temperature Range | -40°C to +85°C |
| Power Consumption (Normal Operation) | 186mW |
| Power Consumption (Shutdown Mode) | 5µA |
| Input Bandwidth | -3dB at 400MHz |
| Signal-to-Noise Ratio (SNR) at 20MHz | 58.5dB (typ) |
| Spurious-Free Dynamic Range (SFDR) at 20MHz | 72dBc |
| Package Type | 32-pin TQFP |
| Output Type | Parallel, offset binary, CMOS-compatible, three-state outputs |
| Output Voltage Range | 1.7V to 3.6V |
Key Features
- Single 3.3V operation
- Excellent dynamic performance: 58.5dB SNR and 72dBc SFDR at 20MHz input frequency
- Low power consumption: 62mA in normal operation and 5µA in shutdown mode
- Fully differential analog input with a wide 2Vp-p differential input voltage range
- 400MHz -3dB input bandwidth, allowing for high-frequency input signals
- On-chip 2.048V precision bandgap reference for setting the ADC’s full-scale range
- Flexible reference structure allowing for buffered, direct, or externally derived references
- CMOS-compatible three-state outputs for flexible interfacing
- Available in a 32-pin TQFP package with an extended industrial temperature range (-40°C to +85°C)
Applications
- Baseband and IF digitization
- CCD imaging
- Digital set-top boxes
- Ultrasound imaging
- Video digitizing applications
Q & A
- What is the resolution and sampling rate of the MAX1449EHJ+T ADC?
The MAX1449EHJ+T is a 10-bit ADC with a sampling rate of 105 Msps.
- What is the operating voltage range of the MAX1449EHJ+T?
The device operates from a single 2.7V to 3.6V supply.
- What is the power consumption of the MAX1449EHJ+T in normal and shutdown modes?
The power consumption is 186mW in normal operation and 5µA in shutdown mode.
- What is the input bandwidth of the MAX1449EHJ+T?
The input bandwidth is -3dB at 400MHz.
- What is the signal-to-noise ratio (SNR) of the MAX1449EHJ+T at 20MHz input frequency?
The SNR is 58.5dB (typical) at 20MHz input frequency.
- Can the MAX1449EHJ+T be operated with single-ended inputs?
- What type of output does the MAX1449EHJ+T have?
The device has parallel, offset binary, CMOS-compatible, three-state outputs.
- What is the temperature range for the MAX1449EHJ+T?
The device is specified over the extended industrial temperature range of -40°C to +85°C.
- Is an evaluation kit available for the MAX1449EHJ+T?
- What are some common applications of the MAX1449EHJ+T?
