Overview
The AD7691BCPZRL is an 18-bit, charge redistribution, successive approximation analog-to-digital converter (ADC) produced by Analog Devices Inc. This ADC operates from a single power supply, making it versatile and efficient for various applications. It features a high resolution of 18 bits with no missing codes and a throughput of 250 kSPS, making it suitable for precise data acquisition tasks. The AD7691BCPZRL is part of the PulSAR series, known for its high performance and reliability.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 18 bits | |
| Throughput | 250 kSPS | |
| Integral Nonlinearity (INL) | ±0.75 LSB (typical), ±1.5 LSB (maximum) | |
| Dynamic Range | 102 dB (typical at 250 kSPS) | |
| Oversampled Dynamic Range | 125 dB (at 1 kSPS) | |
| Signal-to-Noise and Distortion Ratio (SINAD) | 101.5 dB (typical at 1 kHz) | |
| Total Harmonic Distortion (THD) | -125 dB (typical at 1 kHz) | |
| Analog Input Range | ±VREF (0 V to VREF with VREF up to VDD on both inputs) | |
| Supply Voltage | 2.3 V to 5.5 V | V |
| Logic Interface Voltage | 1.8 V, 2.5 V, 3 V, 5 V | V |
| Power Dissipation | 1.35 mW at 2.5 V/100 kSPS, 4 mW at 5 V/100 kSPS | mW |
| Standby Current | 1 nA | A |
| Package Type | 10-lead MSOP or 3 mm × 3 mm LFCSP | |
| Operating Temperature | -40°C to 85°C | °C |
Key Features
- High Resolution and Accuracy: 18-bit resolution with no missing codes and ±0.75 LSB typical INL.
- High Throughput: 250 kSPS sampling rate.
- Low Power Consumption: 1.35 mW at 2.5 V/100 kSPS and 4 mW at 5 V/100 kSPS.
- Single-Supply Operation: Operates from a single power supply ranging from 2.3 V to 5.5 V.
- Differential Analog Input: True differential analog input range of ±VREF.
- No Pipeline Delay: No latency or pipeline delay, ideal for multiple multiplexed channel applications.
- Serial Interface Compatibility: Compatible with SPI, QSPI, MICROWIRE, and DSP interfaces.
- Low Standby Current: 1 nA standby current.
- Compact Packaging: Available in 10-lead MSOP and 3 mm × 3 mm LFCSP packages.
Applications
- Battery-Powered Equipment: Ideal for battery-powered devices due to its low power consumption.
- Data Acquisition Systems: Suitable for high-precision data acquisition tasks.
- Seismic Data Acquisition Systems: Used in seismic data acquisition due to its high resolution and accuracy.
- Instrumentation: Used in various instrumentation applications requiring precise analog-to-digital conversion.
- Signal Processing and Communication: Applicable in signal processing and communication systems where high accuracy is required.
Q & A
- What is the resolution of the AD7691BCPZRL ADC?
The AD7691BCPZRL has an 18-bit resolution with no missing codes.
- What is the maximum sampling rate of the AD7691BCPZRL?
The maximum sampling rate is 250 kSPS.
- What is the typical INL of the AD7691BCPZRL?
The typical INL is ±0.75 LSB.
- What is the dynamic range of the AD7691BCPZRL at 250 kSPS?
The dynamic range is 102 dB typical at 250 kSPS.
- What are the supported logic interface voltages for the AD7691BCPZRL?
The supported logic interface voltages are 1.8 V, 2.5 V, 3 V, and 5 V.
- What is the power dissipation of the AD7691BCPZRL at 2.5 V and 100 kSPS?
The power dissipation is 1.35 mW at 2.5 V and 100 kSPS.
- What is the standby current of the AD7691BCPZRL?
The standby current is 1 nA.
- In what packages is the AD7691BCPZRL available?
The AD7691BCPZRL is available in 10-lead MSOP and 3 mm × 3 mm LFCSP packages.
- What is the operating temperature range of the AD7691BCPZRL?
The operating temperature range is -40°C to 85°C.
- Is the AD7691BCPZRL compatible with SPI and DSP interfaces?
Yes, it is compatible with SPI, QSPI, MICROWIRE, and DSP interfaces.
