Overview
The AD7763BSVZ is a high-performance, 24-bit, Σ-Δ (Sigma-Delta) analog-to-digital converter (ADC) produced by Analog Devices Inc. This device is designed to combine wide input bandwidth and high speed with the benefits of Σ-Δ conversion, making it ideal for high-speed data acquisition applications. The AD7763 offers a signal-to-noise ratio (SNR) of 107 dB at a sampling rate of 625 kSPS, and it features a wide dynamic range with significantly reduced antialiasing requirements, simplifying the design process.
Key Specifications
| Parameter | Specification | Unit |
|---|---|---|
| Resolution | 24-bit | |
| Sampling Rate | Up to 625 kSPS | |
| Signal-to-Noise Ratio (SNR) | 107 dB | |
| Analog Input Range (VREF = 4 V) | ±3.2 V differential-biased around 2 V common mode | |
| Input Capacitance (Internal Buffer) | 5 pF (typ) | |
| Input Capacitance (Modulator) | 55 pF (typ) | |
| Reference Voltage Input | +2.5 V to +4.096 V | |
| Power Dissipation (Normal Mode) | 955.5 mW (max) | |
| Power Dissipation (Low Power Mode) | 651 mW (max) | |
| Power Dissipation (Standby Mode) | 6.35 mW (typ) | |
| Operating Temperature Range | −40°C to +85°C | |
| Package Type | 64-Lead Thin Quad Flat Package, Exposed Pad (TQFP_EP) |
Key Features
- High-performance 24-bit Σ-Δ ADC with 107 dB SNR at 625 kSPS.
- Wide input bandwidth and high speed.
- Integrated buffer to drive the reference, differential amplifier for signal buffering and level shifting.
- Overrange flag, internal gain and offset registers.
- Low-pass digital FIR filter with user-programmable coefficients.
- Programmable decimation rates.
- Reduced antialiasing requirements due to wide dynamic range.
- Common-mode biasing achievable using on-chip differential amplifiers.
Applications
The AD7763BSVZ is ideal for applications demanding high SNR without the need for complex front-end signal processing. These include:
- High-speed data acquisition systems.
- Industrial automation and control systems.
- Medical imaging and diagnostic equipment.
- Aerospace and defense applications.
- High-precision measurement and testing equipment.
Q & A
- What is the resolution of the AD7763BSVZ ADC?
The AD7763BSVZ has a 24-bit resolution.
- What is the maximum sampling rate of the AD7763BSVZ?
The maximum sampling rate is up to 625 kSPS.
- What is the signal-to-noise ratio (SNR) of the AD7763BSVZ?
The SNR is 107 dB at 625 kSPS.
- What is the analog input range of the AD7763BSVZ with a 4 V reference voltage?
The analog input range is ±3.2 V differential-biased around a 2 V common mode.
- What type of package does the AD7763BSVZ come in?
The AD7763BSVZ comes in a 64-Lead Thin Quad Flat Package, Exposed Pad (TQFP_EP).
- What is the operating temperature range of the AD7763BSVZ?
The operating temperature range is from −40°C to +85°C.
- Does the AD7763BSVZ have integrated signal conditioning components?
Yes, it includes an integrated buffer to drive the reference, a differential amplifier for signal buffering and level shifting, and other integrated components.
- Can the decimation rates and FIR filter coefficients be programmed by the user?
Yes, the decimation rates and FIR filter coefficients can be user-programmed.
- What are some typical applications of the AD7763BSVZ?
Typical applications include high-speed data acquisition systems, industrial automation, medical imaging, aerospace, and high-precision measurement equipment.
- How much power does the AD7763BSVZ consume in normal operation?
The total power dissipation in normal mode is up to 955.5 mW.
