Overview
The AD7768-1BCPZ-RL7, produced by Analog Devices Inc., is a high-performance, low-power, single-channel Σ-Δ (Sigma-Delta) analog-to-digital converter (ADC). This device is a single-channel version of the AD7768, an 8-channel, simultaneously sampling Σ-Δ ADC. It provides a single configurable and reusable data acquisition (DAQ) footprint, setting a new industry standard in combined ac and dc performance. This ADC is designed to enable instrumentation and industrial system designers to create versatile measurement systems for both isolated and non-isolated applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 24-bit | |
| Sampling Rate | Up to 256 kSPS | |
| Dynamic Range | 108.5 dB | |
| Input Bandwidth | 110.8 kHz | |
| Integral Nonlinearity (INL) | ±1.1 ppm | |
| Offset Error | ±30 µV | |
| Gain Error | ±30 ppm | |
| Package Type | 28-Lead LFCSP (4mm x 5mm x 0.75mm) | |
| Operating Temperature Range | -40°C to +125°C | |
| Power Supply Voltages | AVDD1: 4.5V to 5.5V, AVDD2: 2.0V to 5.0V, IOVDD: 1.8V to 3.3V | |
| Power Consumption (Fast Mode) | AVDD1: 4.1mA to 5.1mA, AVDD2: 4.7mA to 5.65mA, IOVDD: 3.35mA to 11.5mA |
Key Features
- Extensive Digital Filtering Capabilities: The AD7768-1 offers various filter options including low ripple FIR, sinc5, and sinc3 filters, which can be configured for different system requirements such as frequency domain measurements, linear phase response, low latency paths, and dc input measurements.
- High Performance Metrics: Achieves a dynamic range of 108.5 dB, ±1.1 ppm integral nonlinearity (INL), ±30 µV offset error, and ±30 ppm gain error.
- Low Power Operation: Can operate in low power mode with supplies running from a single 3.0 V rail, reducing power consumption.
- Embedded Analog Functionality: 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 requirements.
- Programmable Decimation and Filter Options: Allows for programmable decimation and various filter configurations to meet different system needs.
Applications
- Instrumentation Systems: Suitable for designing versatile measurement systems in instrumentation applications.
- Industrial Systems: Ideal for industrial system designers needing high performance and flexibility in data acquisition.
- Control Loop Applications: The low latency paths and configurable filters make it suitable for control loop applications.
- Isolated and Non-Isolated Applications: Can be used in both isolated and non-isolated measurement scenarios.
Q & A
- What is the resolution of the AD7768-1BCPZ-RL7 ADC?
The AD7768-1BCPZ-RL7 has a 24-bit resolution.
- What is the maximum sampling rate of the AD7768-1BCPZ-RL7?
The maximum sampling rate is up to 256 kSPS.
- What is the dynamic range of the AD7768-1BCPZ-RL7?
The dynamic range is 108.5 dB when using the low ripple FIR filter at 256 kSPS.
- What are the key filter options available in the AD7768-1BCPZ-RL7?
The key filter options include low ripple FIR, sinc5, and sinc3 filters, which can be configured for different system requirements.
- How does the AD7768-1BCPZ-RL7 reduce the design burden in data acquisition systems?
The device includes embedded analog functionality such as precharge buffers and full buffer inputs, which simplify the task of external amplifiers and reference devices.
- What are the power supply voltage ranges for the AD7768-1BCPZ-RL7?
The power supply voltage ranges are AVDD1: 4.5V to 5.5V, AVDD2: 2.0V to 5.0V, and IOVDD: 1.8V to 3.3V.
- Can the AD7768-1BCPZ-RL7 operate in low power mode?
Yes, it can operate in low power mode with supplies running from a single 3.0 V rail.
- What is the operating temperature range of the AD7768-1BCPZ-RL7?
The operating temperature range is -40°C to +125°C.
- What type of package does the AD7768-1BCPZ-RL7 come in?
The device comes in a 28-Lead LFCSP (4mm x 5mm x 0.75mm) package.
- Is there an evaluation board available for the AD7768-1BCPZ-RL7?
Yes, the EV-AD7768-1FMCZ evaluation kit is available for evaluating the features of the AD7768-1.
