Overview
The AD7262BSTZ-5 is a dual, 12-bit, high-speed, low-power successive approximation analog-to-digital converter (ADC) produced by Analog Devices Inc. This component operates from a single 5 V power supply and features two complete ADC functions, allowing for simultaneous sampling and conversion of two channels. Each ADC is preceded by a true differential analog input with a programmable gain amplifier (PGA), offering 14 gain settings ranging from ×1 to ×128. The AD7262BSTZ-5 is designed for high throughput rates, with the AD7262 model achieving up to 1 MSPS per on-chip ADC and the AD7262-5 model achieving up to 500 kSPS.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 12 bits |
| Throughput Rate | Up to 1 MSPS (AD7262), up to 500 kSPS (AD7262-5) |
| Power Supply | Single 5 V |
| Package Type | 48-Lead Low Profile Quad Flat Package (LQFP) |
| Operating Temperature | −40°C to +105°C |
| Analog Input Impedance | >1 GΩ |
| Input Bandwidth | −3 dB bandwidth: 1.7 MHz at gain = 2 |
| Signal-to-Noise Ratio (SNR) | 73 dB typical at gain = 2, 66 dB typical at gain = 32 |
| On-chip Reference | 2.5 V (can be disabled for external reference) |
| Comparators | Four on-chip comparators (two low power, two fast propagation delay) |
| Interface | SPI/QSPI™/MICROWIRE/DSP compatible |
Key Features
- Dual 12-bit successive approximation ADCs with simultaneous sampling and conversion of two channels.
- True differential analog inputs with programmable gain amplifiers (PGA) offering 14 gain settings.
- High throughput rates: up to 1 MSPS for AD7262 and up to 500 kSPS for AD7262-5.
- Four on-chip comparators: two optimized for low power and two for fast propagation delays.
- Calibration function to remove device offset error and programmable gain adjust registers for input path compensation.
- On-chip 2.5 V reference that can be disabled for an external reference.
- High speed serial interface compatible with SPI/QSPI™/MICROWIRE/DSP.
Applications
The AD7262BSTZ-5 is ideally suited for monitoring small amplitude signals from a variety of sensors. It includes all the functionality needed for monitoring position feedback signals from analog encoders used in motor control systems. Other applications include data acquisition systems, industrial control systems, and any scenario requiring high-speed, low-power ADCs with flexible gain settings and on-chip comparators.
Q & A
- What is the resolution of the AD7262BSTZ-5 ADC?
The AD7262BSTZ-5 has a resolution of 12 bits.
- What are the throughput rates of the AD7262 and AD7262-5 models?
The AD7262 model achieves up to 1 MSPS, while the AD7262-5 model achieves up to 500 kSPS.
- What type of power supply does the AD7262BSTZ-5 require?
The AD7262BSTZ-5 operates from a single 5 V power supply.
- What is the package type of the AD7262BSTZ-5?
The AD7262BSTZ-5 comes in a 48-Lead Low Profile Quad Flat Package (LQFP).
- What is the operating temperature range of the AD7262BSTZ-5?
The operating temperature range is −40°C to +105°C.
- How many gain settings are available on the AD7262BSTZ-5?
There are 14 gain settings available: ×1, ×2, ×3, ×4, ×6, ×8, ×12, ×16, ×24, ×32, ×48, ×64, ×96, and ×128.
- Does the AD7262BSTZ-5 have on-chip comparators?
Yes, it has four on-chip comparators, with two optimized for low power and two for fast propagation delays.
- Can the on-chip reference of the AD7262BSTZ-5 be disabled?
Yes, the on-chip 2.5 V reference can be disabled if an external reference is preferred.
- What type of interface does the AD7262BSTZ-5 support?
The AD7262BSTZ-5 supports a high speed serial interface compatible with SPI/QSPI™/MICROWIRE/DSP.
- What are some common applications of the AD7262BSTZ-5?
Common applications include monitoring small amplitude signals from sensors, position feedback in motor control systems, data acquisition systems, and industrial control systems.
