Overview
The AD7770ACPZ-RL is a high-performance 8-channel analog-to-digital converter (ADC) produced by Analog Devices Inc. This device is designed for simultaneous sampling, making it ideal for precise and reliable data acquisition. It features eight full sigma-delta (Σ-Δ) ADCs on a single chip, each with a programmable gain stage that supports gains of 1, 2, 4, and 8. This allows for accurate mapping of lower amplitude sensor outputs onto the full-scale ADC input range, maximizing the dynamic range of the signal chain. The AD7770 accepts VREF voltages ranging from 1 V to 3.6 V and supports various analog input configurations, including unipolar, true bipolar, differential, pseudo differential, and single-ended signals.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of Channels | 8 | - |
| Number of Bits | 24 | - |
| Sampling Rate (Per Second) | 32k | samples/s |
| Input Type | Differential, Single Ended | - |
| Data Interface | SPI | - |
| Configuration | MUX-PGA-ADC | - |
| Architecture | Sigma-Delta | - |
| Reference Type | External, Internal | - |
| Voltage - Supply, Analog | 2.2 V ~ 3.6 V | V |
| Voltage - Supply, Digital | 1.8 V to 3.6 V | V |
| Minimum Operating Temperature | -40°C | °C |
| Maximum Operating Temperature | +125°C | °C |
| Package / Case | 64-LFCSP (9x9) | - |
Key Features
- Synchronous sampling for phase coherent measurement
- Ultra-wide bandwidth and frequency response
- Fully programmable parameters for customization
- Programmable gain stages with gains of 1, 2, 4, and 8
- Support for VREF voltages ranging from 1 V to 3.6 V
- Low input current to allow direct sensor connections
- Two modes of operation: high resolution mode and low power mode
Applications
- High-voltage monitoring
- Temperature sensing
- Power distribution monitoring
- Protection relays
- General-purpose data acquisition
- Industrial process control
Q & A
- What is the AD7770ACPZ-RL?
The AD7770ACPZ-RL is an 8-channel, 24-bit, sigma-delta analog-to-digital converter (ADC) produced by Analog Devices Inc.
- What is the sampling rate of the AD7770ACPZ-RL?
The sampling rate is 32 ksamples per second.
- What types of analog inputs does the AD7770ACPZ-RL support?
The device supports differential, pseudo differential, and single-ended analog inputs.
- What are the programmable gain options for the AD7770ACPZ-RL?
The gain stages are programmable with gains of 1, 2, 4, and 8.
- What is the operating temperature range of the AD7770ACPZ-RL?
The specified operating temperature range is -40°C to +105°C, although the device is operational up to +125°C.
- What data interface does the AD7770ACPZ-RL use?
The device uses an SPI (Serial Peripheral Interface) data interface.
- What are the power modes available for the AD7770ACPZ-RL?
The device offers high resolution mode and low power mode.
- What is the package type of the AD7770ACPZ-RL?
The package type is 64-LFCSP (9x9).
- Can the AD7770ACPZ-RL be used for high-voltage monitoring?
- Is the AD7770ACPZ-RL RoHS compliant?
