Overview
The AD7264BSTZ is a dual, 14-bit, high-speed, low-power successive approximation analog-to-digital converter (ADC) produced by Analog Devices Inc. This device operates from a single 5 V power supply and features throughput rates of up to 1 million samples per second (MSPS) per on-chip ADC. It is designed for simultaneous sampling and conversion of two channels, each preceded by a true differential analog input with a programmable gain amplifier (PGA). The AD7264 is ideal for monitoring small amplitude signals from various sensors and is particularly suited for applications in motor control systems and analog encoders.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 14-bit |
| Throughput Rate | Up to 1 MSPS per ADC |
| Analog Input Impedance | >1 GΩ |
| Input Bandwidth | -3 dB bandwidth: 1.7 MHz at gain = 2 |
| Signal-to-Noise Ratio (SNR) | 78 dB typical at gain = 2, 71 dB typical at gain = 32 |
| Gain Settings | ×1, ×2, ×3, ×4, ×6, ×8, ×12, ×16, ×24, ×32, ×48, ×64, ×96, ×128 |
| Comparators | Four on-chip comparators (A, B, C, D) |
| Reference Voltage | On-chip 2.5 V reference (can be disabled for external reference) |
| Operating Temperature | -40°C to +105°C |
| Package | 48-lead LFCSP and LQFP |
| Power Supply | Single 5 V |
Key Features
- Dual 14-bit ADCs for simultaneous sampling and conversion of two channels.
- True differential analog inputs with programmable gain amplifiers (PGA).
- Device offset calibration and system gain calibration.
- Four on-chip comparators with different optimization for power and speed.
- High-speed serial interface compatible with SPI, QSPI, MICROWIRE, and DSP.
- On-chip 2.5 V reference voltage with the option to use an external reference.
- Low power consumption and high-speed operation.
Applications
The AD7264BSTZ is ideally suited for a variety of applications, including:
- Monitoring small amplitude signals from various sensors.
- Position feedback signals from analog encoders in motor control systems.
- Industrial automation and control systems.
- Medical devices requiring high precision and low power consumption.
- Aerospace and defense applications where high reliability and wide operating temperature ranges are critical.
Q & A
- What is the resolution of the AD7264BSTZ ADC?
The AD7264BSTZ has a resolution of 14 bits. - What is the maximum throughput rate of the AD7264BSTZ?
The maximum throughput rate is up to 1 MSPS per on-chip ADC. - What is the input impedance of the AD7264BSTZ?
The input impedance is greater than 1 GΩ. - What are the available gain settings for the AD7264BSTZ?
The gain settings include ×1, ×2, ×3, ×4, ×6, ×8, ×12, ×16, ×24, ×32, ×48, ×64, ×96, and ×128. - Does the AD7264BSTZ have on-chip comparators?
Yes, it has four on-chip comparators. - What is the operating temperature range of the AD7264BSTZ?
The operating temperature range is -40°C to +105°C. - What types of packages are available for the AD7264BSTZ?
The device is available in 48-lead LFCSP and LQFP packages. - Can the AD7264BSTZ use an external reference voltage?
Yes, the on-chip 2.5 V reference can be disabled to use an external reference voltage. - What serial interfaces is the AD7264BSTZ compatible with?
The device is compatible with SPI, QSPI, MICROWIRE, and DSP serial interfaces. - What are some typical applications of the AD7264BSTZ?
Typical applications include monitoring small amplitude signals from sensors, position feedback in motor control systems, and various industrial and medical devices.
