Overview
The AD7674ACPZRL is an 18-bit, 800 kSPS (kilosamples per second), charge redistribution, successive approximation register (SAR) analog-to-digital converter (ADC) produced by Analog Devices Inc. This device operates on a single 5 V power supply and is known for its high resolution, fast throughput, and excellent accuracy. The AD7674 features a fully differential input structure and is available in a 48-lead LFCSP (Lead Frame Chip Scale Package) with operation specified from −40°C to +85°C.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 18 bits |
| Sampling Rate | 800 kSPS (warp mode), 666 kSPS (normal mode), 570 kSPS (impulse mode) |
| Input Range | Differential input range: ±VREF (VREF up to 5 V) |
| Integral Nonlinearity (INL) | ±2.5 LSB max (±9.5 ppm of full scale) |
| Dynamic Range | 103 dB typ (VREF = 5 V) |
| SINAD (Signal-to-Noise and Distortion Ratio) | 100 dB typ at 2 kHz (VREF = 5 V) |
| Interface | Parallel (18-, 16-, or 8-bit bus) and serial (SPI/QSPI™/MICROWIRE/DSP compatible) |
| Power Supply | Single 5 V supply |
| Power Dissipation | 98 mW typ at 800 kSPS, 78 mW typ at 500 kSPS (impulse mode), 160 µW at 1 kSPS (impulse mode) |
| Package | 48-lead LFCSP |
| Operating Temperature | −40°C to +85°C |
Key Features
- No pipeline delay due to SAR architecture.
- High speed and high resolution with 18-bit conversion.
- Excellent accuracy with a maximum integral nonlinearity of ±2.5 LSB.
- Versatile interface options including parallel (18-, 16-, or 8-bit bus) and serial (SPI/QSPI™/MICROWIRE/DSP compatible).
- On-board reference buffer and error correction circuits.
- Single 5 V supply operation with low power dissipation.
Applications
- CT scanners.
- High dynamic data acquisition systems.
- Geophone and hydrophone sensors.
- Σ-Δ replacement in low power, multichannel applications.
- Instrumentation and spectrum analysis.
- Medical instruments.
Q & A
- What is the resolution of the AD7674ACPZRL? The AD7674ACPZRL has an 18-bit resolution.
- What are the sampling rates of the AD7674ACPZRL? The sampling rates are 800 kSPS (warp mode), 666 kSPS (normal mode), and 570 kSPS (impulse mode).
- What is the input range of the AD7674ACPZRL? The differential input range is ±VREF (VREF up to 5 V).
- What is the maximum integral nonlinearity (INL) of the AD7674ACPZRL? The maximum INL is ±2.5 LSB (±9.5 ppm of full scale).
- What interfaces does the AD7674ACPZRL support? It supports both parallel (18-, 16-, or 8-bit bus) and serial (SPI/QSPI™/MICROWIRE/DSP compatible) interfaces.
- What is the power supply requirement for the AD7674ACPZRL? It operates on a single 5 V supply.
- What is the typical power dissipation of the AD7674ACPZRL? The typical power dissipation is 98 mW at 800 kSPS, 78 mW at 500 kSPS (impulse mode), and 160 µW at 1 kSPS (impulse mode).
- In what package is the AD7674ACPZRL available? It is available in a 48-lead LFCSP.
- What is the operating temperature range of the AD7674ACPZRL? The operating temperature range is −40°C to +85°C.
- What are some common applications of the AD7674ACPZRL? Common applications include CT scanners, high dynamic data acquisition systems, geophone and hydrophone sensors, Σ-Δ replacement in low power, multichannel applications, instrumentation, spectrum analysis, and medical instruments.
