Overview
The AD7982BCPZ-RL7 is an 18-bit, successive approximation, analog-to-digital converter (ADC) produced by Analog Devices Inc. This device operates from a single power supply and features a low power, high speed sampling ADC along with a versatile serial interface port. The AD7982 is designed to sample the voltage difference between the IN+ and IN− pins, with the reference voltage (VREF) applied externally and independent of the supply voltage (VDD). It supports various logic levels (1.8 V, 2.5 V, 3 V, and 5 V) using a separate VIO supply.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 18 bits |
| Conversion Rate | Up to 1 MSPS |
| Input Range | ±10V, ±5V (differential) |
| Power Supply | 2.375 V to 2.625 V (VDD), 1.71 V to 5.5 V (VIO) |
| Temperature Range | −40°C to +85°C |
| Package Type | 10-Lead LFCSP (3 mm × 3 mm) |
| Differential Linearity Error (DNL) | −0.85 to +1.5 LSB |
| Integral Linearity Error (INL) | −2 to +2 LSB |
| Gain Error | −0.023% to +0.023% of FS |
| Zero Error | ±100 μV to ±700 μV |
| Power Dissipation | 70 μW to 8.6 mW (depending on throughput) |
| Energy per Conversion | 7.0 nJ/sample |
Key Features
- SPI-/QSPI-/MICROWIRE-/DSP-compatible serial interface
- Ability to daisy-chain multiple ADCs on a single 3-wire bus
- Optional busy indicator
- Support for 1.8 V, 2.5 V, 3 V, and 5 V logic levels using separate VIO supply
- Low power consumption with power scaling linearly with throughput
- High speed sampling capability
- Wide operating temperature range: −40°C to +85°C
Applications
- Automated test equipment
- Data acquisition systems
- Medical instruments
- Machine automation
Q & A
- What is the resolution of the AD7982BCPZ-RL7?
The AD7982BCPZ-RL7 has an 18-bit resolution.
- What is the maximum conversion rate of the AD7982BCPZ-RL7?
The maximum conversion rate is up to 1 MSPS.
- What are the input voltage ranges supported by the AD7982BCPZ-RL7?
The device supports differential input ranges of ±10V and ±5V.
- What are the power supply requirements for the AD7982BCPZ-RL7?
The device requires a power supply of 2.375 V to 2.625 V (VDD) and 1.71 V to 5.5 V (VIO).
- What is the operating temperature range of the AD7982BCPZ-RL7?
The operating temperature range is −40°C to +85°C.
- What package type is the AD7982BCPZ-RL7 available in?
The device is available in a 10-Lead LFCSP (3 mm × 3 mm) package.
- Does the AD7982BCPZ-RL7 support daisy-chaining of multiple ADCs?
Yes, it supports daisy-chaining of multiple ADCs on a single 3-wire bus.
- What is the power dissipation of the AD7982BCPZ-RL7 at different throughputs?
The power dissipation ranges from 70 μW to 8.6 mW depending on the throughput.
- What is the energy per conversion for the AD7982BCPZ-RL7?
The energy per conversion is 7.0 nJ/sample.
- In which applications is the AD7982BCPZ-RL7 commonly used?
The device is commonly used in automated test equipment, data acquisition systems, medical instruments, and machine automation.
