Overview
The ADS8505IDWR is a 16-bit successive approximation register (SAR) analog-to-digital converter (ADC) produced by Texas Instruments. This device is part of the ADS8505 family and is available in a 28-pin SOIC package. It is designed for high-performance applications requiring precise analog-to-digital conversion. The ADS8505 operates from a single 5-V supply, with a power dissipation of typically 70 mW at a 250 kHz sampling rate. It features a standard ±10-V input range and can use either an internal 2.5-V reference or an external reference. The device is fully specified for operation over the industrial temperature range of –40°C to 85°C.
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 |
| Sampling 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 Supply Voltage | V | 4.75 | 5 | 5.25 |
| Power Dissipation | mW | 70 | 100 | 100 |
| Operating Temperature Range | °C | -40 | - | 85 |
Key Features
- 16-bit successive approximation register (SAR) analog-to-digital converter
- 250 kHz sampling rate
- Standard ±10-V input range
- Single 5-V supply operation with power dissipation under 100 mW
- Internal or external reference options
- Full parallel data output in binary 2's complement format
- Pin-compatible with ADS7805 (low speed) and 12-bit ADS8504/7804
- Available in 28-pin SOIC and SSOP packages
- Specified performance over the industrial temperature range of –40°C to 85°C
- 105 dB SFDR at 250 kHz sample rate
Applications
- Industrial Process Control
- Data Acquisition Systems
- Digital Signal Processing
- Medical Equipment
- Instrumentation
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 has a sampling rate of 250 kHz.
- What is the input voltage range of the ADS8505?
The input voltage range is ±10 V.
- Can the ADS8505 use an external reference?
- What is the power supply voltage for the ADS8505?
The power supply voltage is 4.75 V to 5.25 V.
- What is the typical power dissipation of the ADS8505 at 250 kHz sampling rate?
The typical power dissipation is 70 mW.
- What is the operating temperature range of the ADS8505?
The operating temperature range is –40°C to 85°C.
- What are the package options for the ADS8505?
The ADS8505 is available in 28-pin SOIC and SSOP packages.
- What are some typical applications of the ADS8505?
Typical applications include industrial process control, data acquisition systems, digital signal processing, medical equipment, and instrumentation.
- What is the SFDR of the ADS8505 at 250 kHz sample rate?
The SFDR is 105 dB at 250 kHz sample rate.
