Overview
The MAX1438ECQ+D, produced by Analog Devices Inc./Maxim Integrated, is an octal, 12-bit analog-to-digital converter (ADC) designed for low-power and high-dynamic performance. This device is optimized for applications in medical imaging instrumentation and digital communications. It operates from a single 1.8V supply, consuming only 913mW (114mW per channel), and features fully differential inputs, a pipelined architecture, and digital error correction. The MAX1438ECQ+D is known for its excellent dynamic performance, including a 69.9dB signal-to-noise ratio (SNR) and 95dBc spurious-free dynamic range (SFDR) at a 5.3MHz input frequency.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 12-bit | |
| Number of ADCs | 8 | |
| Number of Input Channels | 8 | |
| Sampling Rate | 65 Msps | |
| Digital Interface Type | Serial LVDS | |
| Input Type | Voltage | |
| Input Signal Type | Differential | |
| Voltage Reference | Internal (1.24V precision bandgap reference) | |
| Voltage Supply Source | Single (1.8V) | |
| Input Voltage | 1.4 Vp-p | |
| Typical Power Dissipation | 913 mW | |
| Maximum Power Dissipation | 1035 mW | |
| Integral Nonlinearity Error | ±2.5 LSB | |
| Full Scale Error | -3.5/2% FSR | |
| Signal to Noise Ratio | 69.9 dB (typ) | |
| Sample and Hold | Yes | |
| Minimum Operating Temperature | -40°C | |
| Maximum Operating Temperature | 85°C | |
| Package/Case | TQFP-100 | |
| Pin Count | 100 |
Key Features
- Excellent Dynamic Performance: 69.9dB SNR at 5.3MHz, 95dBc SFDR at 5.3MHz, and 85dB channel isolation.
- Ultra-Low Power: 114mW per channel in normal operation.
- Serial LVDS Outputs: Supports up to 30 inches FR-4 backplane connections.
- Pin-Selectable LVDS/SLVS (Scalable Low-Voltage Signal) Mode.
- Test Mode for Digital Signal Integrity.
- Fully Differential Analog Inputs: Wide differential input voltage range (1.4Vp-p).
- On-Chip 1.24V Precision Bandgap Reference.
- Clock Duty-Cycle Equalizer.
- Compact, 100-Pin TQFP Package with Exposed Pad.
- Evaluation Kit Available (MAX1438EVKIT).
Applications
- Instrumentation.
- Multichannel Communications.
- Ultrasound and Medical Imaging.
Q & A
- What is the resolution of the MAX1438ECQ+D ADC?
The MAX1438ECQ+D has a 12-bit resolution.
- How many ADCs and input channels does the MAX1438ECQ+D have?
The MAX1438ECQ+D features 8 ADCs and 8 input channels.
- What is the maximum sampling rate of the MAX1438ECQ+D?
The maximum sampling rate is 65 Msps.
- What type of digital interface does the MAX1438ECQ+D use?
The MAX1438ECQ+D uses a serial LVDS digital interface.
- What is the input signal type of the MAX1438ECQ+D?
The input signal type is differential.
- What is the typical power dissipation of the MAX1438ECQ+D?
The typical power dissipation is 913 mW.
- What is the signal-to-noise ratio (SNR) of the MAX1438ECQ+D at 5.3MHz input frequency?
The SNR is 69.9 dB (typ) at 5.3MHz input frequency.
- Does the MAX1438ECQ+D have a power-down mode?
Yes, the MAX1438ECQ+D features a power-down mode for idle periods.
- What is the operating temperature range of the MAX1438ECQ+D?
The operating temperature range is -40°C to +85°C.
- What type of package does the MAX1438ECQ+D come in?
The MAX1438ECQ+D comes in a 100-pin TQFP package with an exposed pad.
