Overview
The AD7262BSTZ-RL7, manufactured by Analog Devices Inc., is a dual, 12-bit, high-speed, low-power successive approximation analog-to-digital converter (ADC). This component operates from a single 5 V power supply and is designed for low power consumption and compact packaging, making it ideal for space-limited designs. The AD7262 features throughput rates of up to 1 MSPS per on-chip ADC, while the AD7262-5 variant, such as the AD7262BSTZ-5-RL7, has throughput rates of up to 500 kSPS. Each ADC is preceded by a true differential analog input with a programmable gain amplifier (PGA) and supports simultaneous sampling and conversion of two channels.
Key Specifications
| Parameter | Value | Unit | Test Conditions/Comments |
|---|---|---|---|
| Number of Inputs | 2 | Differential | |
| Number of Bits | 12 | ||
| Number of A/D Converters | 2 | ||
| Sampling Rate (Per Second) | Up to 1 MSPS (AD7262), Up to 500 kSPS (AD7262-5) | ||
| Data Interface | SPI, DSP | ||
| Configuration | PGA-S/H-ADC | ||
| Ratio - S/H:ADC | 1:1 | ||
| Voltage - Supply, Analog | 5 V | ||
| Voltage - Supply, Digital | 2.7 V ~ 5.25 V | ||
| Operating Temperature | -40°C ~ 105°C | ||
| Package / Case | 48-LQFP (7x7) | ||
| Reference Type | External, Internal | ||
| Signal-to-Noise Ratio (SNR) | 73 dB typical at gain = 2 | dB | fIN = 100 kHz sine wave |
| Total Harmonic Distortion (THD) | -77 dB typical | dB | fIN = 100 kHz sine wave |
Key Features
- Simultaneous Sampling and Conversion: Allows for the simultaneous sampling and conversion of two channels, enhancing the efficiency of data acquisition.
- Programmable Gain Amplifier (PGA): Offers 14 gain settings (×1, ×2, ×3, ×4, ×6, ×8, ×12, ×16, ×24, ×32, ×48, ×64, ×96, and ×128) to accommodate various signal amplitudes.
- On-Chip Comparators: Includes four integrated comparators, with two optimized for low power and two with fast propagation delays, suitable for applications like motor control.
- Internal Reference: Features an on-chip 2.5 V reference that can be disabled to use an external reference if preferred.
- High-Speed Serial Interface: Compatible with SPI, QSPI, MICROWIRE, and DSP interfaces, facilitating high-speed data transfer.
- Calibration Functions: Includes device offset calibration and system gain calibration to ensure accurate measurements.
- Low Power Consumption: Designed to operate with low power, making it suitable for battery-powered and energy-efficient applications.
Applications
The AD7262BSTZ-RL7 is ideally suited for a variety of applications, including:
- Motor Control Systems: The simultaneous sampling capability and integrated comparators make it suitable for monitoring position feedback signals from analog encoders.
- Sensor Monitoring: It is designed for monitoring small amplitude signals from various sensors, such as those used in industrial automation and medical devices.
- Data Acquisition Systems: Its high-speed and low-power characteristics make it a good fit for data acquisition systems in both industrial and consumer electronics.
- Automotive Systems: The component's robust operating temperature range and reliability make it suitable for automotive applications.
Q & A
- What is the maximum sampling rate of the AD7262BSTZ-RL7?
The AD7262 features a maximum sampling rate of up to 1 MSPS per ADC, while the AD7262-5 variant has a maximum sampling rate of up to 500 kSPS.
- What type of analog inputs does the AD7262BSTZ-RL7 support?
The AD7262BSTZ-RL7 supports true differential analog inputs.
- What is the resolution of the AD7262BSTZ-RL7?
The AD7262BSTZ-RL7 is a 12-bit ADC.
- What are the available gain settings for the PGA in the AD7262BSTZ-RL7?
The PGA offers 14 gain settings: ×1, ×2, ×3, ×4, ×6, ×8, ×12, ×16, ×24, ×32, ×48, ×64, ×96, and ×128.
- Does the AD7262BSTZ-RL7 have on-chip comparators?
Yes, the AD7262BSTZ-RL7 includes four integrated comparators.
- What is the operating temperature range of the AD7262BSTZ-RL7?
The operating temperature range is -40°C to +105°C.
- What types of serial interfaces does the AD7262BSTZ-RL7 support?
The AD7262BSTZ-RL7 supports SPI, QSPI, MICROWIRE, and DSP interfaces.
- Does the AD7262BSTZ-RL7 have an internal reference voltage?
Yes, it features an on-chip 2.5 V reference that can be disabled to use an external reference if preferred.
- What is the package type of the AD7262BSTZ-RL7?
The AD7262BSTZ-RL7 comes in a 48-LQFP (7x7) package.
- Is the AD7262BSTZ-RL7 RoHS compliant?
Yes, the AD7262BSTZ-RL7 is RoHS compliant.
