Overview
The AD7762BSVZ-REEL, produced by Analog Devices Inc., is a high-performance, 24-bit Sigma-Delta (Σ-Δ) analog-to-digital converter (ADC). This device is designed for high-speed data acquisition and combines wide input bandwidth with the benefits of Σ-Δ conversion, offering a signal-to-noise ratio (SNR) of 106 dB at a sampling rate of 625 kSPS. The AD7762 features an integrated buffer, a differential amplifier for signal buffering and level shifting, and a low-pass digital FIR filter, making it a highly integrated and compact data acquisition device that minimizes the need for external signal conditioning components.
Key Specifications
| Parameter | Specification |
|---|---|
| Resolution | 24 bits |
| Sampling Rate | Up to 625 kSPS |
| Signal-to-Noise Ratio (SNR) | 106 dB at 625 kSPS |
| Analog Input Range | ±3.2 V differential (with 4 V reference) |
| Reference Voltage | 2.5 V to 4.096 V |
| Supply Voltage | 2.5 V to 5.25 V (analog), 2.5 V to 5.25 V (digital) |
| Package | 64-Lead TQFP (10mm x 10mm w/ EP) |
| Operating Temperature | -40°C to +85°C |
| Input Capacitance | 5 pF (at internal buffer inputs), 55 pF (at modulator inputs) |
Key Features
- Integrated buffer to drive the reference and differential amplifier for signal buffering and level shifting
- Low-pass digital FIR filter with default or user-programmable coefficients
- Overrange flag, internal gain and offset registers
- Programmable decimation rates (32× to 256×)
- Filter bypass modes and low power/power-down modes
- Synchronization of multiple devices via SYNC pin
- Fully differential modulator input and on-chip differential amplifier for reduced external signal conditioning requirements
Applications
- Data acquisition systems
- Vibration analysis
- Instrumentation
Q & A
- What is the resolution of the AD7762 ADC?
The AD7762 has a resolution of 24 bits.
- What is the maximum sampling rate of the AD7762?
The maximum sampling rate is up to 625 kSPS.
- What is the signal-to-noise ratio (SNR) of the AD7762 at 625 kSPS?
The SNR is 106 dB at 625 kSPS.
- What is the analog input range of the AD7762 with a 4 V reference?
The analog input range is ±3.2 V differential.
- What are the supply voltage ranges for the AD7762?
The supply voltage ranges are 2.5 V to 5.25 V for both analog and digital supplies.
- What package type is the AD7762 available in?
The AD7762 is available in a 64-Lead TQFP (10mm x 10mm w/ EP) package.
- What is the operating temperature range of the AD7762?
The operating temperature range is -40°C to +85°C.
- Does the AD7762 have integrated signal conditioning components?
Yes, it includes an integrated buffer, differential amplifier, and low-pass digital FIR filter.
- Can the decimation rate of the AD7762 be programmed?
Yes, the decimation rate can be programmed from 32× to 256×.
- What are some typical applications of the AD7762?
Typical applications include data acquisition systems, vibration analysis, and instrumentation.
