Overview
The AD7982BRMZ is an 18-bit, successive approximation, analog-to-digital converter (ADC) produced by Analog Devices Inc. It operates from a single power supply, VDD, and features a low power, high speed, 18-bit sampling ADC along with a versatile serial interface port. The ADC samples the voltage difference between the IN+ and IN− pins on the rising edge of the CNV signal. The reference voltage, VREF, is applied externally and can be set independently of the supply voltage. The AD7982 is available in 10-lead MSOP and 10-lead LFCSP packages, with an operating temperature range of −40°C to +85°C.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 18 bits |
| Sampling Rate | Up to 1 MSPS |
| Power Supply | 2.375 V to 2.625 V (VDD), 1.71 V to 5.5 V (VIO) |
| Operating Temperature | −40°C to +85°C |
| Package Type | 10-lead MSOP, 10-lead LFCSP |
| 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 | 7.0 nJ/sample at 1 MSPS |
Key Features
- SPI-/QSPI-/MICROWIRE-/DSP-compatible serial interface
- Ability to daisy-chain multiple ADCs on a single 3-wire bus
- Optional busy indicator
- Compatibility with 1.8 V, 2.5 V, 3 V, and 5 V logic using separate VIO supply
- Low power consumption, scaling linearly with throughput
- High speed and high accuracy with no missing codes
Applications
- Automated test equipment
- Data acquisition systems
- Medical instruments
- Machine automation
Q & A
- What is the resolution of the AD7982BRMZ ADC?
The AD7982BRMZ has a resolution of 18 bits.
- What is the maximum sampling rate of the AD7982BRMZ?
The maximum sampling rate is up to 1 MSPS.
- What are the operating temperature ranges for the AD7982BRMZ?
The operating temperature range is −40°C to +85°C.
- What types of packages are available for the AD7982BRMZ?
The AD7982BRMZ is available in 10-lead MSOP and 10-lead LFCSP packages.
- Can the AD7982BRMZ be daisy-chained with other ADCs?
- What is the power consumption of the AD7982BRMZ at 1 MSPS?
The power consumption is approximately 7.0 nJ/sample at 1 MSPS.
- Is the AD7982BRMZ compatible with different logic levels?
- What are some common applications of the AD7982BRMZ?
- How does the power of the AD7982BRMZ scale with throughput?
The power consumption scales linearly with throughput.
- Is there an evaluation kit available for the AD7982BRMZ?
