Overview
The AD7768-1BCPZ-RL, produced by Analog Devices Inc., is a high-performance, low-power, Σ-Δ (sigma-delta) analog-to-digital converter (ADC). This single-channel ADC is part of the AD7768 family, which includes an 8-channel, simultaneously sampling Σ-Δ ADC. The AD7768-1 is designed to provide precision conversion of both AC and DC signals, making it a versatile component for various instrumentation and industrial applications. It offers a single configurable and reusable data acquisition (DAQ) footprint, setting a new industry standard in combined AC and DC performance.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 24-bit | |
| Sampling Rate | Up to 256 kSPS | |
| Dynamic Range | 108.5 dB | |
| Integral Nonlinearity (INL) | ±1.1 ppm | |
| Offset Error | ±30 µV | |
| Gain Error | ±30 ppm | |
| Input Bandwidth | 110.8 kHz | |
| Power Supply Voltages | AVDD1: 4.5 V to 5.5 V, AVDD2: 2.0 V to 5.0 V, IOVDD: 1.8 V to 3.3 V | V |
| Package Type | 28-Lead LFCSP (4mm x 5mm x 0.75mm) | |
| Operating Temperature Range | -40°C to +125°C | °C |
Key Features
- Extensive Digital Filtering Capabilities: The AD7768-1 offers various filter options, including low ripple FIR filters, sinc5 and sinc3 filters, which can be configured for different system requirements such as frequency domain measurements, control loop applications, and line frequency rejection.
- Embedded Analog Functionality: The device includes precharge buffers on each analog input and a full buffer input on the reference, reducing the design burden and simplifying external amplifier and reference device connections.
- Low Power Operation: The AD7768-1 can operate in low power mode, allowing the AVDD1, AVDD2, and IOVDD supplies to run from a single 3.0 V rail.
- High Performance Metrics: Achieves high dynamic range, low INL, offset error, and gain error, making it suitable for precise measurements in various applications.
Applications
- Instrumentation Systems: Ideal for designing across multiple measurement variants in instrumentation systems, both isolated and non-isolated applications.
- Industrial Systems: Suitable for industrial system designers who need high performance and low power consumption in their data acquisition systems.
- Control Loop Applications: The low latency path options (sinc5 or sinc3 filters) make it suitable for control loop applications.
- DC and AC Measurements: Capable of precise DC and AC signal measurements with configurable filters to reject line frequencies.
Q & A
- What is the resolution of the AD7768-1BCPZ-RL ADC?
The AD7768-1BCPZ-RL has a 24-bit resolution.
- What is the maximum sampling rate of the AD7768-1BCPZ-RL?
The maximum sampling rate is up to 256 kSPS.
- What is the dynamic range of the AD7768-1BCPZ-RL when using the low ripple FIR filter?
The dynamic range is 108.5 dB when using the low ripple FIR filter at 256 kSPS.
- What are the power supply voltage ranges for the AD7768-1BCPZ-RL?
The power supply voltage ranges are AVDD1: 4.5 V to 5.5 V, AVDD2: 2.0 V to 5.0 V, and IOVDD: 1.8 V to 3.3 V.
- What type of package does the AD7768-1BCPZ-RL come in?
The AD7768-1BCPZ-RL comes in a 28-Lead LFCSP (4mm x 5mm x 0.75mm) package.
- What is the operating temperature range of the AD7768-1BCPZ-RL?
The operating temperature range is -40°C to +125°C.
- Does the AD7768-1BCPZ-RL require an external reference?
- What are the key features of the digital filtering capabilities of the AD7768-1BCPZ-RL?
- How does the AD7768-1BCPZ-RL simplify the design process for external components?
- Can the AD7768-1BCPZ-RL operate in low power mode?
