Overview
The AD7654ASTZ is a dual-channel, 16-bit, simultaneous sampling 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, allowing for simultaneous sampling of four channels. It is designed for high-speed data acquisition with a throughput rate of up to 500 kSPS and includes internal error correction circuits, ensuring superior DC accuracy and no missing codes.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Resolution | - | - | 16 Bits | - |
| Analog Input Voltage Range | 0 | - | 5 V | V |
| Common-Mode Input Voltage | -0.1 | - | 0.5 V | V |
| Input Current (500 kSPS throughput) | - | - | 45 μA | A |
| Input Impedance | - | - | 2 μs | s |
| Throughput Rate (Normal Mode) | - | - | 500 kSPS | SPS |
| Throughput Rate (Impulse Mode) | - | - | 444 kSPS | SPS |
| Integral Linearity Error | -3.5 | - | 3.5 LSB | LSB |
| No Missing Codes | - | - | 16 Bits | - |
| Power Dissipation (Typical) | - | 120 mW | - | mW |
| Package Type | - | - | 48-Lead Low Profile Quad Flat Package (LQFP) | - |
Key Features
- Simultaneous Sampling: The AD7654ASTZ features two sample-and-hold circuits that allow simultaneous sampling of four channels.
- Fast Throughput: The device operates at a throughput rate of up to 500 kSPS.
- Superior DC Accuracy: It has a maximum integral nonlinearity of 3.5 LSB with no missing 16-bit codes.
- Single-Supply Operation: The ADC operates from a single 5 V power supply.
- Serial or Parallel Interface: It supports both serial and parallel system interface ports, including SPI, QSPI, MICROWIRE, and DSP compatible interfaces.
Applications
- AC Motor Control: Suitable for controlling AC motors due to its simultaneous sampling capability.
- 3-Phase Power Control: Ideal for applications requiring precise control over three-phase power systems.
- 4-Channel Data Acquisition: Used in various data acquisition systems where simultaneous sampling of multiple channels is necessary.
- Uninterrupted Power Supplies: Can be used in UPS systems to ensure continuous monitoring and control.
- Communications: Applicable in communication systems that require high-speed and accurate data conversion.
Q & A
- What is the resolution of the AD7654ASTZ ADC?
The AD7654ASTZ has a resolution of 16 bits. - What is the analog input voltage range of the AD7654ASTZ?
The analog input voltage range is from 0 V to 5 V. - What is the throughput rate of the AD7654ASTZ in normal mode?
The throughput rate in normal mode is up to 500 kSPS. - Does the AD7654ASTZ support simultaneous sampling?
Yes, it supports simultaneous sampling of four channels. - What type of interface does the AD7654ASTZ support?
The AD7654ASTZ supports both serial and parallel interfaces, including SPI, QSPI, MICROWIRE, and DSP compatible interfaces. - What is the typical power dissipation of the AD7654ASTZ?
The typical power dissipation is 120 mW. - What is the package type of the AD7654ASTZ?
The package type is a 48-Lead Low Profile Quad Flat Package (LQFP). - Is the AD7654ASTZ suitable for high-speed data acquisition?
Yes, it is designed for high-speed data acquisition with a throughput rate of up to 500 kSPS. - Does the AD7654ASTZ have any missing codes?
No, it has no missing 16-bit codes. - What are some common applications of the AD7654ASTZ?
Common applications include AC motor control, 3-phase power control, 4-channel data acquisition, uninterrupted power supplies, and communications.
