Overview
The ADS8505IBDBG4, produced by Texas Instruments, is a 16-bit successive approximation register (SAR) analog-to-digital converter (ADC). This device is designed using state-of-the-art CMOS structures and is fully specified for operation over the industrial temperature range of –40°C to 85°C. It features a complete 16-bit, capacitor-based SAR ADC with a sample-and-hold (S/H) circuit, internal or external reference options, and a clock interface for microprocessor use. The ADS8505 also includes 3-state output drivers and operates from a single +5-V supply, with a typical power dissipation of 70 mW at a 250-kHz sampling rate.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Resolution | 16 bits | |||
| Sampling Rate | 250 kHz | |||
| Analog Input Range | ±10 V | |||
| Integral Linearity Error (INL) | -1.5 | 0 | 1.5 | LSB |
| Differential Linearity Error (DNL) | -1 | 0 | 1 | LSB |
| Full-Scale Error (FSR) | -0.5 | 0 | 0.5 | %FSR |
| Bipolar Zero Error | -2 | 0 | 2 | mV |
| Power Dissipation at 250 kHz | 70 | 100 | 100 | mW |
| Operating Temperature Range | -40 | 85 | °C | |
| Package Type | 28-pin SSOP, 28-pin SOIC | |||
Key Features
- 16-bit SAR ADC with sample-and-hold (S/H) circuit
- Internal or external reference options
- Single +5-V supply operation
- Typical power dissipation of 70 mW at 250 kHz sampling rate
- Full parallel data output
- Pin-compatible with ADS7805 (low speed) and 12-bit ADS8504/7804
- Industry standard ±10-V input range
- 105 dB SFDR at 250-kHz sample rate
- No missing codes, ±1 LSB max DNL, and ±1.5 LSB max INL
- Bipolar zero error of ±2 mV with ±0.4 PPM/°C drift
Applications
- Industrial Process Control
- Data Acquisition Systems
- Digital Signal Processing
- Medical Equipment
- Instrumentation
Q & A
- What is the resolution of the ADS8505?
The ADS8505 is a 16-bit analog-to-digital converter.
- What is the sampling rate of the ADS8505?
The sampling rate of the ADS8505 is 250 kHz.
- What is the analog input range of the ADS8505?
The analog input range of the ADS8505 is ±10 V.
- What are the package options for the ADS8505?
The ADS8505 is available in 28-pin SSOP and 28-pin SOIC packages.
- What is the operating temperature range of the ADS8505?
The operating temperature range of the ADS8505 is –40°C to 85°C.
- Does the ADS8505 support internal or external references?
Yes, the ADS8505 supports both internal and external reference options.
- What is the typical power dissipation of the ADS8505 at 250 kHz sampling rate?
The typical power dissipation of the ADS8505 at 250 kHz sampling rate is 70 mW.
- What are some of the key applications of the ADS8505?
The ADS8505 is used in industrial process control, data acquisition systems, digital signal processing, medical equipment, and instrumentation.
- What is the full-scale error of the ADS8505?
The full-scale error of the ADS8505 is ±0.5% FSR using the internal reference and ±0.1% FSR using the external 2.5-V reference.
- Does the ADS8505 have any missing codes?
No, the ADS8505 has no missing codes.
