Overview
The AD7671ACPZ is a 16-bit, 1 MSPS (Mega Samples Per Second), charge redistribution Successive Approximation Register (SAR) analog-to-digital converter (ADC) manufactured by Analog Devices Inc. This device operates from a single 5 V power supply and is available in a 48-lead Lead Frame Chip Scale Package (LFCSP) and a 48-lead Quad Flat Package (LQFP). The AD7671 is designed for high-speed data acquisition and features a resistor input scaler, an internal conversion clock, error correction circuits, and both serial and parallel system interface ports. It is fabricated using Analog Devices’ high-performance 0.6 micron CMOS process and is specified to operate from –40°C to +85°C.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 16 Bits | |
| Sampling Rate | 1 MSPS (Warp Mode), 800 kSPS (Normal Mode) | |
| Voltage - Supply, Digital | 5 V | |
| Voltage - Supply, Analog | 5 V | |
| Package | 48-Lead LFCSP (7mm x 7mm w/ EP), 48-Lead LQFP | |
| Operating Temperature | –40°C to +85°C | |
| Number of Inputs | 1 | |
| Input Type | Differential | |
| Data Interface | SPI, Parallel, DSP | |
| Power Dissipation | 112 mW (Typical) | |
| Integral Nonlinearity (INL) | 2.5 LSB Max (0.0038% of Full Scale) | |
| Signal-to-Noise Ratio (SNR) | 90 dB Typ at 250 kHz | |
| Total Harmonic Distortion (THD) | 100 dB Typ at 250 kHz |
Key Features
- High-Speed Throughput: The AD7671 offers high-speed sampling rates of up to 1 MSPS in Warp Mode and 800 kSPS in Normal Mode.
- Single-Supply Operation: Operates from a single 5 V power supply, with low power consumption and a power-down mode.
- Superior Linearity: Features a maximum integral nonlinearity of 2.5 LSB with no missing 16-bit codes.
- Versatile Interface: Supports both serial and parallel interfaces, compatible with 3 V or 5 V logic.
- True Bipolar Input: Allows for true bipolar input ranges, making it suitable for a variety of applications.
- Low Power Modes: Includes reduced power modes (Impulse) where power is scaled with throughput, and a power-down mode.
Applications
- Data Acquisition: Ideal for high-speed data acquisition systems due to its fast throughput and high resolution.
- Communication: Used in communication systems requiring high-speed analog-to-digital conversion.
- Instrumentation: Suitable for various instrumentation applications, including spectrum analysis and medical instruments.
- Spectrum Analysis: Utilized in spectrum analysis due to its high SNR and low THD.
- Medical Instruments: Used in medical devices requiring precise and high-speed analog-to-digital conversion.
- Process Control: Applied in process control systems for accurate and reliable data acquisition.
Q & A
- What is the resolution of the AD7671ACPZ?
The AD7671ACPZ has a resolution of 16 bits.
- What are the sampling rates of the AD7671ACPZ?
The AD7671ACPZ can sample at rates of up to 1 MSPS in Warp Mode and 800 kSPS in Normal Mode.
- What is the power supply requirement for the AD7671ACPZ?
The AD7671ACPZ operates from a single 5 V power supply.
- What types of interfaces does the AD7671ACPZ support?
The AD7671ACPZ supports both serial and parallel interfaces, compatible with 3 V or 5 V logic.
- What is the operating temperature range of the AD7671ACPZ?
The AD7671ACPZ operates from –40°C to +85°C.
- What is the typical power dissipation of the AD7671ACPZ?
The typical power dissipation of the AD7671ACPZ is 112 mW.
- Does the AD7671ACPZ support true bipolar inputs?
Yes, the AD7671ACPZ supports true bipolar inputs.
- What are the key applications of the AD7671ACPZ?
The AD7671ACPZ is used in data acquisition, communication, instrumentation, spectrum analysis, medical instruments, and process control.
- What is the maximum integral nonlinearity (INL) of the AD7671ACPZ?
The maximum INL of the AD7671ACPZ is 2.5 LSB (0.0038% of Full Scale).
- Does the AD7671ACPZ have low power modes?
Yes, the AD7671ACPZ includes reduced power modes (Impulse) and a power-down mode.
