Overview
The ADS8515IBDBR, produced by Texas Instruments, is a 16-bit sampling analog-to-digital (A/D) converter that utilizes state-of-the-art CMOS structures. This device is designed for high precision and reliability, offering a standard ±10-V input range and a sampling rate of 250 kHz. It features a capacitor-based, successive approximation register (SAR) A/D converter with sample and hold (S/H) capabilities, a reference, clock, and interface for microprocessor use, along with 3-state output drivers. The ADS8515IBDBR operates from a single +5-V supply, with power dissipation typically under 100 mW, and 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 | 8.885 | 8.885 | 8.885 |
| Analog Input Capacitance | pF | 75 | 75 | 75 |
| Throughput Rate | kHz | 250 | 250 | 250 |
| Integral Linearity Error (INL) | LSB | –3 | –2 | 3 |
| Differential Linearity Error (DNL) | LSB | –1 | –1 | 2 |
| No Missing Codes | Bits | 16 | 16 | 16 |
| Signal-to-Noise Ratio (SNR) | dB | 90 | ||
| Power Dissipation | mW | 100 | ||
| Package | 28-Pin SSOP |
Key Features
- Standard ±10-V input range with precision resistors providing industry-standard input levels.
- 90-dB minimum signal-to-noise ratio (SNR) with a 20-kHz input.
- ±2.0 LSB maximum integral linearity error (INL) and ±1 LSB maximum differential linearity error (DNL).
- No missing codes in the 16-bit conversion range.
- 5-V analog supply with flexible I/O supply voltage from 1.65 V to 5.25 V.
- Internal or external reference options with a buffered internal 4.096-V reference.
- Full parallel data output in binary twos complement format.
- Pin-compatible with ADS7805/10 and 12-bit ADS7804/8504 models.
- Typical power dissipation of 100 mW at 250 kSPS.
Applications
- Industrial Process Control
- Data Acquisition Systems
- Digital Signal Processing
- Medical Equipment
- Instrumentation
Q & A
- What is the resolution of the ADS8515IBDBR?
The ADS8515IBDBR has a resolution of 16 bits.
- What is the input voltage range of the ADS8515IBDBR?
The input voltage range is ±10 V.
- What is the typical throughput rate of the ADS8515IBDBR?
The typical throughput rate is 250 kHz.
- Does the ADS8515IBDBR support both internal and external references?
Yes, it supports both internal and external references.
- What is the power dissipation of the ADS8515IBDBR at 250 kSPS?
The typical power dissipation is 100 mW at 250 kSPS.
- What is the operating temperature range of the ADS8515IBDBR?
The operating temperature range is –40°C to 85°C.
- What type of package is the ADS8515IBDBR available in?
The ADS8515IBDBR is available in a 28-pin SSOP package.
- Is the ADS8515IBDBR pin-compatible with other models?
Yes, it is pin-compatible with ADS7805/10 and 12-bit ADS7804/8504 models.
- What is the signal-to-noise ratio (SNR) of the ADS8515IBDBR?
The minimum SNR is 90 dB with a 20-kHz input.
- How does the ADS8515IBDBR initiate a new conversion?
A new conversion is initiated by holding CS and R/C low for a minimum of 40 ns.
