Overview
The ADS8505IBDBRG4, produced by Texas Instruments, is a 16-bit successive approximation register (SAR) analog-to-digital converter (ADC). This device is designed for high-performance applications requiring precise analog-to-digital conversion. It operates at a sampling rate of 250 kHz and is available in 28-pin SSOP and SOIC packages, ensuring robust performance across the industrial temperature range of –40°C to 85°C.
The ADS8505 features a complete 16-bit, capacitor-based SAR ADC with a sample-and-hold circuit, internal or external reference options, and a three-state output driver for parallel data output. It is powered by a single +5-V supply, making it efficient with a typical power dissipation of 70 mW at 250 kSPS.
Key Specifications
| Parameter | Unit | Min | Typ | Max |
|---|---|---|---|---|
| Resolution | Bits | 16 | 16 | 16 |
| Analog Input Voltage Range | V | ±10 | ±10 | ±10 |
| Analog Input Impedance | kΩ | 11.5 | 11.5 | 11.5 |
| Throughput Rate | kHz | 250 | 250 | 250 |
| Integral Linearity Error (INL) | LSB | -1.5 | -1.5 | 1.5 |
| Differential Linearity Error (DNL) | LSB | -1 | -1 | 1 |
| Full-Scale Error (FSE) | %FSR | -0.5 | -0.25 | 0.5 |
| Power Dissipation at 250 kSPS | mW | 70 | 70 | 100 |
| Operating Temperature Range | °C | -40 | -40 | 85 |
Key Features
- High Resolution and Accuracy: 16-bit resolution with ±1.5 LSB max INL and ±1 LSB max DNL, ensuring high precision in analog-to-digital conversion.
- High Sampling Rate: Operates at a sampling rate of 250 kHz, suitable for various high-speed applications.
- Internal or External Reference: Can use either an internal 2.5-V reference or an external reference, providing flexibility in system design.
- Single Supply Operation: Powered by a single +5-V supply, reducing the complexity of power management.
- Low Power Dissipation: Typical power dissipation of 70 mW at 250 kSPS, making it energy-efficient.
- Full Parallel Data Output: Provides a three-state output driver for parallel data output, facilitating easy integration with microprocessors.
- Industrial Temperature Range: Fully specified for operation over the industrial temperature range of –40°C to 85°C.
Applications
- Industrial Process Control: Suitable for monitoring and controlling industrial processes due to its high accuracy and robust operation.
- Data Acquisition Systems: Ideal for data acquisition systems that require high-speed and high-resolution analog-to-digital conversion.
- Medical Equipment: Used in medical devices where precise and reliable analog-to-digital conversion is critical.
- Digital Signal Processing: Applicable in various digital signal processing applications requiring high-resolution ADCs.
- Instrumentation: Suitable for instrumentation applications such as test and measurement equipment.
Q & A
- What is the resolution of the ADS8505?
The ADS8505 has a resolution of 16 bits.
- What is the sampling rate of the ADS8505?
The ADS8505 operates at a sampling rate of 250 kHz.
- What is the input voltage range of the ADS8505?
The input voltage range of the ADS8505 is ±10 V.
- Can the ADS8505 use an external reference?
Yes, the ADS8505 can use either an internal 2.5-V reference or an external reference.
- What is the power dissipation of the ADS8505 at 250 kSPS?
The typical power dissipation of the ADS8505 at 250 kSPS is 70 mW.
- What is the operating temperature range of the ADS8505?
The ADS8505 is fully specified for operation over the industrial temperature range of –40°C to 85°C.
- What type of output does the ADS8505 provide?
The ADS8505 provides a full parallel data output in binary 2's complement format.
- Is the ADS8505 suitable for medical equipment?
Yes, the ADS8505 is suitable for medical equipment due to its high accuracy and reliability.
- Can the ADS8505 be used in industrial process control?
Yes, the ADS8505 is suitable for industrial process control applications.
- What is the typical full-scale error of the ADS8505?
The typical full-scale error of the ADS8505 is ±0.5% FSR when using the internal reference.
