Overview
The AD7712ANZ is a precision analog-to-digital converter (ADC) produced by Analog Devices Inc. It is designed as a complete analog front end for low-frequency measurement applications. The device features two analog input channels, accepting both low-level signals directly from transducers and high-level signals up to ±4 × VREF. The AD7712ANZ employs sigma-delta conversion techniques to achieve up to 24 bits of no missing codes performance, making it highly accurate for various measurement tasks.
Key Specifications
| Specification | Value |
|---|---|
| Part Number | AD7712ANZ |
| Manufacturer | Analog Devices Inc. |
| Description | Analog to Digital Converter, 24 bit, 19.5 kSPS, Single, 4.75 V, 10.5 V, DIP |
| Lifecycle Status | PRODUCTION |
| Factory Lead Time | 8 Weeks |
| ECCN Code | EAR99 |
| Max Power Dissipation | 53 mW |
| Number of Functions | 1 |
| Supply Voltage | 5 V |
| Operating Supply Voltage | 10 V |
| Polarity | Bipolar, Unipolar |
| Configuration | MUX-PGA-ADC |
| Number of Channels | 2 |
| Interface | SPI, Serial |
| Resolution | 24 bits |
| Sampling Rate | 19.5 kSPS |
| Voltage - Supply, Analog | 5 V ~ 10 V |
| Output Bit Code | BINARY, OFFSET BINARY |
| Power Consumption | 30 mW |
| Linearity Error-Max (EL) | 0.003% |
| Min Dual Supply Voltage | 4.75 V |
| Pin Count | 24 |
| Package Type | DIP, SOIC |
Key Features
- Sigma-Delta Conversion Technique: Achieves up to 24 bits of no missing codes performance, ensuring high accuracy.
- Programmable Gain Front End: Allows for the measurement of both low-level and high-level signals.
- Programmable Low-Pass Digital Filter: Adjustable filter cutoff and settling time via the on-chip control register.
- Differential Input Capability: One of the analog inputs and the reference input are differential, allowing for precise measurements.
- Self-Calibration, System Calibration, and Background Calibration: Removes internal and external offset and gain errors.
- Low Power Consumption: CMOS construction ensures low power dissipation, with a hardware programmable power-down mode reducing standby power to 100 µW typical.
- Flexible Serial Interface: Bidirectional SPI interface allows connection to digital signal processors and microcontrollers.
Applications
- Low-Frequency Measurement Applications: Ideal for measuring signals from transducers in various industrial and medical devices.
- Smart, Microcontroller-Based Systems: Suitable for integration into systems requiring precise analog-to-digital conversion.
- Industrial Automation: Used in control systems, sensors, and other automation equipment.
- Medical Devices: Applicable in medical equipment requiring accurate signal measurement and conversion.
Q & A
- What is the resolution of the AD7712ANZ ADC?
The AD7712ANZ has a resolution of up to 24 bits.
- What is the sampling rate of the AD7712ANZ?
The sampling rate of the AD7712ANZ is 19.5 kSPS.
- What types of input signals can the AD7712ANZ handle?
The AD7712ANZ can handle both low-level signals directly from transducers and high-level signals up to ±4 × VREF.
- Does the AD7712ANZ support differential input capability?
Yes, one of the analog inputs and the reference input are differential.
- What calibration modes are available on the AD7712ANZ?
The AD7712ANZ supports self-calibration, system calibration, and background calibration.
- What is the power consumption of the AD7712ANZ in standby mode?
The standby power consumption is 100 µW typical.
- What types of packages are available for the AD7712ANZ?
The AD7712ANZ is available in 24-pin DIP and 24-lead SOIC packages.
- Can the AD7712ANZ be used in single-supply configurations?
Yes, the AD7712ANZ can be operated from a single supply by tying the VSS pin to AGND.
- What is the maximum power dissipation of the AD7712ANZ?
The maximum power dissipation is 53 mW.
- What interface does the AD7712ANZ use for communication?
The AD7712ANZ uses a bidirectional SPI interface.
