Overview
The AD7655ASTZ is a low-cost, simultaneous sampling, dual-channel, 16-bit analog-to-digital converter (ADC) produced by Analog Devices Inc. This device operates from a single 5 V power supply and features two low-noise, wide-bandwidth track-and-hold amplifiers that allow for simultaneous sampling of four channels. The AD7655ASTZ is part of the PulSAR (Successive Approximation Register) ADC family and is known for its high-speed conversion and low power consumption, making it suitable for a variety of applications.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 16-bit |
| Number of Channels | 4-channel |
| Sampling Rate | 500 kSPS (normal mode), 444 kSPS (impulse mode) |
| Analog Input Voltage Range | 0 V to 5 V |
| Power Supply | Single 5 V |
| Power Dissipation | 120 mW typical, 2.6 mW at 10 kSPS |
| Package Type | 48-Lead LQFP (7mm x 7mm) |
| Operating Temperature Range | −40°C to +85°C |
| Interface | Parallel and serial (SPI/QSPI/MICROWIRE/DSP compatible) |
Key Features
- Simultaneous sampling of four channels using two track-and-hold amplifiers.
- High-speed conversion with a throughput of 500 kSPS in normal mode and 444 kSPS in impulse mode.
- Internal conversion clock and error correction circuits.
- Parallel and serial interface options (SPI/QSPI/MICROWIRE/DSP compatible).
- Low power consumption with reduced power mode for low throughput applications.
- Pin-to-pin compatible with the AD7654.
Applications
- AC motor control
- 3-phase power control
- 4-channel data acquisition
- Uninterrupted power supplies
- Communications
- Defense and aerospace applications (AD7655-EP model)
Q & A
- What is the resolution of the AD7655ASTZ ADC?
The AD7655ASTZ has a 16-bit resolution.
- How many channels does the AD7655ASTZ support?
The AD7655ASTZ supports four channels.
- What are the sampling rates of the AD7655ASTZ in normal and impulse modes?
The sampling rates are 500 kSPS in normal mode and 444 kSPS in impulse mode.
- What is the analog input voltage range of the AD7655ASTZ?
The analog input voltage range is from 0 V to 5 V.
- What type of power supply does the AD7655ASTZ require?
The AD7655ASTZ operates from a single 5 V power supply.
- What is the typical power dissipation of the AD7655ASTZ?
The typical power dissipation is 120 mW, and it can be as low as 2.6 mW at 10 kSPS.
- What package types are available for the AD7655ASTZ?
The AD7655ASTZ is available in a 48-Lead LQFP package.
- What is the operating temperature range of the AD7655ASTZ?
The operating temperature range is from −40°C to +85°C.
- What interfaces does the AD7655ASTZ support?
The AD7655ASTZ supports both parallel and serial interfaces (SPI/QSPI/MICROWIRE/DSP compatible).
- Is the AD7655ASTZ suitable for defense and aerospace applications?
Yes, the AD7655-EP model is specifically designed to support defense and aerospace applications, adhering to the AQEC standard.
