Overview
The AD7631BCPZRL is an 18-bit, successive approximation register (SAR) analog-to-digital converter (ADC) produced by Analog Devices Inc. This device is fabricated using the iCMOS high voltage process and is designed for high-speed data acquisition and precision applications. It features a charge redistribution architecture with no pipeline delay, making it suitable for various high-performance applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 18 bits | |
| Sampling Rate | Up to 250 kSPS | |
| Integral Nonlinearity (INL) | ±1.5 LSB typical, ±2.5 LSB maximum | |
| Signal-to-Noise Ratio (SNR) | 101 dB @ 2 kHz | |
| Total Harmonic Distortion (THD) | −112 dB @ 2 kHz | |
| Dynamic Range | 102.5 dB | |
| Internal Reference Voltage | 5 V typical, drift: ±3 ppm/°C | |
| Power Dissipation | 73 mW @ 250 kSPS, 10 mW @ 1 kSPS | |
| Operating Temperature Range | −40°C to +85°C | |
| Package Type | 48-lead LFCSP (7 mm × 7 mm) |
Key Features
- No pipeline delay due to SAR architecture
- High speed sampling up to 250 kSPS
- Internal 5 V reference with low drift (±3 ppm/°C)
- Parallel (18-/16-/8-bit bus) and serial interface options (SPI-/QSPI-/MICROWIRE-/DSP-compatible)
- Four different analog input ranges
- Error correction circuits and internal conversion clock
- Low power dissipation: 73 mW @ 250 kSPS, 10 mW @ 1 kSPS
Applications
- Process controls
- High-speed data acquisition
- Digital signal processing
- Spectrum analysis
- Automated Test Equipment (ATE)
Q & A
- What is the resolution of the AD7631BCPZRL ADC?
The AD7631BCPZRL has an 18-bit resolution. - What is the maximum sampling rate of the AD7631BCPZRL?
The maximum sampling rate is up to 250 kSPS. - What is the typical signal-to-noise ratio (SNR) of the AD7631BCPZRL?
The typical SNR is 101 dB @ 2 kHz. - Does the AD7631BCPZRL have an internal reference voltage?
Yes, it has an internal 5 V reference voltage with a drift of ±3 ppm/°C. - What are the interface options for the AD7631BCPZRL?
The device supports both parallel (18-/16-/8-bit bus) and serial interfaces (SPI-/QSPI-/MICROWIRE-/DSP-compatible). - What is the operating temperature range of the AD7631BCPZRL?
The operating temperature range is −40°C to +85°C. - What is the power dissipation of the AD7631BCPZRL at 250 kSPS?
The power dissipation is 73 mW @ 250 kSPS. - What are some typical applications of the AD7631BCPZRL?
Typical applications include process controls, high-speed data acquisition, digital signal processing, spectrum analysis, and Automated Test Equipment (ATE). - What type of package does the AD7631BCPZRL come in?
The device comes in a 48-lead LFCSP (7 mm × 7 mm) package. - Does the AD7631BCPZRL have any pipeline delay?
No, the AD7631BCPZRL does not have any pipeline delay due to its SAR architecture.
