Overview
The MAX1438ECQ+ is an octal, 12-bit analog-to-digital converter (ADC) produced by Analog Devices Inc./Maxim Integrated. This device is optimized for low-power and high-dynamic performance, making it suitable for applications such as medical imaging instrumentation and digital communications. The MAX1438ECQ+ operates from a 1.8V single supply, consuming 825mW (103mW per channel) while delivering a 70.5dB (typ) signal-to-noise ratio (SNR) at a 5.3MHz input frequency. It features a pipelined architecture, fully differential inputs, and digital error correction, ensuring high accuracy and reliability.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Resolution | 12 | Bits |
| Sampling Rate | 65 | Msps |
| Supply Voltage | 1.8 | V |
| Power Consumption (per channel) | 103 | mW |
| Signal-to-Noise Ratio (SNR) | 70.5 | dB (typ) at 5.3MHz input frequency |
| Input Differential Range | 1.4 | Vp-p |
| Common-Mode Voltage Range | 0.76 | V |
| Operating Temperature Range | -40°C to +85°C | |
| Package Type | 100-pin TQFP with exposed pad |
Key Features
- Excellent dynamic performance with 70.5dB SNR and 92dBc SFDR at 5.3MHz input frequency.
- Ultra-low power consumption of 103mW per channel in normal operation.
- Serial LVDS outputs supporting up to 30 inches FR-4 backplane connections.
- Pin-selectable LVDS/SLVS (Scalable Low-Voltage Signal) mode.
- Fully differential analog inputs with a wide differential input voltage range (1.4Vp-p).
- On-chip 1.24V precision bandgap reference with flexible reference structure for external reference use.
- Clock duty-cycle equalizer and on-chip PLL for high-speed serial LVDS clock generation.
- Compact 100-pin TQFP package with exposed pad.
- Power-down mode for idle periods to reduce power consumption.
Applications
- Ultrasound and medical imaging instrumentation.
- Multichannel communications systems.
- High-performance data acquisition systems.
- Industrial and medical imaging applications requiring high dynamic range and low power consumption.
Q & A
- What is the resolution and sampling rate of the MAX1438ECQ+ ADC?
The MAX1438ECQ+ is a 12-bit ADC with a maximum sampling rate of 65Msps.
- What is the power consumption of the MAX1438ECQ+?
The device consumes 825mW total, or 103mW per channel, in normal operation.
- What is the signal-to-noise ratio (SNR) of the MAX1438ECQ+?
The SNR is typically 70.5dB at a 5.3MHz input frequency.
- Does the MAX1438ECQ+ support external reference voltage?
- What type of output does the MAX1438ECQ+ provide?
The device provides serial LVDS outputs.
- What is the operating temperature range of the MAX1438ECQ+?
The operating temperature range is -40°C to +85°C.
- What package type is the MAX1438ECQ+ available in?
The device is available in a 100-pin TQFP package with an exposed pad.
- Does the MAX1438ECQ+ have a power-down mode?
- What are the common applications of the MAX1438ECQ+?
Common applications include ultrasound and medical imaging instrumentation, and multichannel communications systems.
- How does the MAX1438ECQ+ handle clock duty-cycle variations?
The device includes an internal duty-cycle equalizer to compensate for wide variations in clock duty cycle.
