Overview
The AD7381-4BCPZ-RL7, produced by Analog Devices Inc., is a 14-bit, quad, simultaneous sampling, high-speed successive approximation register (SAR) analog-to-digital converter (ADC). This device operates from a 3.0 V to 3.6 V power supply and features throughput rates up to 4 MSPS. It is designed for applications requiring high-speed data acquisition with low noise and high dynamic range. The AD7381-4 includes on-chip oversampling blocks to enhance dynamic range and reduce noise at lower bandwidths, and it supports both internal and external reference voltages. The device is packaged in a 24-lead lead frame chip scale package (LFCSP) and is specified to operate from −40°C to +125°C.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 14 bits | |
| Number of Channels | 4 | |
| Analog Input Type | Differential | |
| Throughput Rate | Up to 4 MSPS | |
| Power Supply | 3.0 V to 3.6 V | V |
| Logic Supply | 1.8 V, 2.5 V, 3.3 V | V |
| Internal Reference Voltage | 2.5 V (10 ppm/°C) | V |
| External Reference Voltage | Up to 3.3 V | V |
| Operating Temperature | −40°C to +125°C | °C |
| Package Type | 24-Lead LFCSP (4mm x 5mm) | |
| VCC Supply Current (Normal Mode) | 38 mA to 42 mA | mA |
| VLOGIC Current (Normal Mode) | 7.3 mA to 8 mA | mA |
| Power Dissipation (Total) | 163.1 mW to 180 mW | mW |
Key Features
- Quad simultaneous sampling and conversion
- High throughput rate of up to 4 MSPS at 14-bit resolution
- Integrated oversampling block to increase dynamic range and reduce noise
- Differential analog inputs with wide common-mode range
- Small sampling capacitor reduces amplifier drive burden
- Compatible with 1.8 V, 2.5 V, and 3.3 V interfaces using separate logic supply
- Buffered internal 2.5 V reference (10 ppm/°C) and support for external reference up to 3.3 V
- Space-saving 24-lead LFCSP package
- Easy interfacing to microprocessors or digital signal processors (DSPs) via standard control inputs
- Data output via 4-wire mode for faster throughput or 1-wire serial mode for slower throughput
Applications
The AD7381-4 is suitable for a variety of high-speed data acquisition applications, including:
- Industrial process control and automation
- Medical imaging and diagnostics
- Aerospace and defense systems
- Automotive safety and control systems
- High-speed data acquisition systems
Q & A
- What is the resolution of the AD7381-4 ADC?
The AD7381-4 has a resolution of 14 bits.
- How many channels does the AD7381-4 support?
The AD7381-4 supports four simultaneous sampling channels.
- What is the maximum throughput rate of the AD7381-4?
The maximum throughput rate is up to 4 MSPS.
- What type of analog inputs does the AD7381-4 accept?
The AD7381-4 accepts differential analog inputs with a wide common-mode range.
- Can the AD7381-4 use an external reference voltage?
- What is the operating temperature range of the AD7381-4?
The operating temperature range is from −40°C to +125°C.
- What package type is the AD7381-4 available in?
The AD7381-4 is available in a 24-lead LFCSP package.
- How does the AD7381-4 improve dynamic range and reduce noise?
The AD7381-4 includes on-chip oversampling blocks to improve dynamic range and reduce noise at lower bandwidths.
- Is the AD7381-4 compatible with different logic supply voltages?
- How can the conversion result be clocked out from the AD7381-4?
The conversion result can be clocked out via 4-wire mode for faster throughput or via 1-wire serial mode for slower throughput.
