Overview
The AD7723BSZ is a 16-bit, sigma-delta Analog-to-Digital Converter (ADC) produced by Analog Devices Inc. This component operates from a single 5 V supply and features continuous sampling of the analog input, eliminating the need for an external sample-and-hold circuit. The AD7723 integrates a finite impulse response (FIR) digital filter, which can be programmed to have either a low-pass or band-pass frequency response. This on-chip filtering, combined with a high oversampling ratio, significantly reduces the external anti-alias requirements. The ADC provides 16-bit performance for input bandwidths up to 460 kHz and an output word rate up to 1.2 MHz.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Resolution | 16 bits | |||
| Input Bandwidth | Up to 460 kHz | |||
| Output Word Rate | Up to 1.2 MHz | |||
| Supply Voltage (AVDD, DVDD) | 4.75 | 5.0 | 5.25 | V |
| Current Consumption (AVDD, HALF_PWR = Low) | 50 | 60 | mA | |
| Current Consumption (DVDD, HALF_PWR = Low) | 25 | 35 | mA | |
| Operating Temperature Range | -40°C | +85°C | °C | |
| Package Type | 44-Lead Metric Quad Flat Package (MQFP) | |||
Key Features
- On-chip 2.5 V voltage reference, with the option to use an external reference.
- Programmable digital filter frequency response: low-pass or band-pass.
- Flexible parallel or serial interface.
- Standby mode with reduced power consumption (200 µW).
- Support for unipolar and bipolar input ranges.
- Synchronization input for simultaneous sampling and output register update in multiple ADC configurations.
Applications
The AD7723BSZ is suitable for a variety of applications requiring high precision and high-speed analog-to-digital conversion. These include:
- Industrial process control and monitoring systems.
- Medical devices, such as patient monitoring equipment and diagnostic tools.
- Aerospace and defense systems requiring precise data acquisition.
- Automotive systems, including engine control and safety systems.
- Test and measurement equipment, such as oscilloscopes and data acquisition systems.
Q & A
- What is the resolution of the AD7723BSZ ADC?
The AD7723BSZ has a resolution of 16 bits.
- What is the maximum input bandwidth of the AD7723BSZ?
The maximum input bandwidth is up to 460 kHz.
- What is the output word rate of the AD7723BSZ?
The output word rate can be up to 1.2 MHz.
- What type of digital filter does the AD7723BSZ use?
The AD7723BSZ uses a finite impulse response (FIR) digital filter.
- Can the AD7723BSZ operate in both unipolar and bipolar input modes?
Yes, the AD7723BSZ supports both unipolar and bipolar input ranges).
- What is the operating temperature range of the AD7723BSZ?
The operating temperature range is from -40°C to +85°C).
- What type of package is the AD7723BSZ available in?
The AD7723BSZ is available in a 44-Lead Metric Quad Flat Package (MQFP)).
- Does the AD7723BSZ have a standby mode?
Yes, the AD7723BSZ has a standby mode that reduces power consumption to 200 µW).
- Can the digital filter frequency response be programmed?
Yes, the digital filter frequency response can be programmed to be either low-pass or band-pass).
- Is an external sample-and-hold circuit required for the AD7723BSZ?
No, the AD7723BSZ continuously samples the analog input, eliminating the need for an external sample-and-hold circuit).
