Overview
The ADS8505IDW, 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 and features a robust set of specifications that make it suitable for various industrial and medical uses. The ADS8505IDW operates from a single 5-V supply and is available in 28-pin SOIC and SSOP packages, ensuring compatibility with a wide range of system designs. It is fully specified for operation over the industrial temperature range of –40°C to 85°C, making it reliable in harsh environments.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 16 | Bits |
| Sample Rate | 250 | kSPS |
| Analog Input Range | ±10 | V |
| Integral Linearity Error (INL) | ±1.5 | LSB |
| Differential Linearity Error (DNL) | ±1 | LSB |
| Bipolar Zero Error | ±2 | mV |
| Full-Scale Error | ±0.1% | FSR |
| Power Supply | 4.75 to 5.25 | V |
| Power Dissipation | 70 | mW (typ) |
| Operating Temperature Range | –40 to 85 | °C |
| Package Type | SOIC (DW), SSOP | |
| Number of Pins | 28 |
Key Features
- 105 dB SFDR at 250-kHz sample rate
- Standard ±10-V input range
- ±1.5 LSB max INL and ±1 LSB max DNL with no missing codes
- ±2 mV max bipolar zero error with ±0.4 ppm/°C drift
- ±0.1% FSR max full-scale error with ±2 ppm/°C drift
- Single 5-V supply operation
- Pin-compatible with ADS7805 (low speed) and 12-bit ADS8504/7804
- Uses internal or external reference
- Full parallel data output
- 70-mW typical power dissipation at 250 kSPS
Applications
- Industrial process control
- Data acquisition systems
- Digital signal processing
- Medical equipment
- Instrumentation
Q & A
- What is the resolution of the ADS8505IDW?
The ADS8505IDW has a resolution of 16 bits.
- What is the maximum sample rate of the ADS8505IDW?
The maximum sample rate is 250 kSPS.
- What is the analog input range of the ADS8505IDW?
The analog input range is ±10 V.
- What is the power supply requirement for the ADS8505IDW?
The device operates from a single 5-V supply (4.75 V to 5.25 V).
- What are the package options for the ADS8505IDW?
The device is available in 28-pin SOIC and SSOP packages.
- What is the operating temperature range of the ADS8505IDW?
The operating temperature range is –40°C to 85°C.
- Does the ADS8505IDW support external or internal references?
Yes, it supports both internal and external references.
- What is the typical power dissipation of the ADS8505IDW at 250 kSPS?
The typical power dissipation is 70 mW.
- What are some common applications for the ADS8505IDW?
Common applications include industrial process control, data acquisition systems, digital signal processing, medical equipment, and instrumentation.
- Is the ADS8505IDW pin-compatible with other Texas Instruments ADCs?
Yes, it is pin-compatible with the ADS7805 (low speed) and 12-bit ADS8504/7804.
