Overview
The ADS8508IBDW is a 12-bit, 250-kHz sampling rate, serial CMOS sampling analog-to-digital converter (ADC) produced by Texas Instruments. This device utilizes a successive approximation register (SAR) architecture and includes a capacitor-based ADC with sample-and-hold, reference, clock, and a serial data interface. It is designed for operation over the industrial temperature range of -40°C to 85°C and is available in a 20-pin SOIC package. The ADS8508IBDW is powered by a single +5-V supply and features low power dissipation, typically 70 mW at 250 kSPS.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 12 | Bits |
| Sampling Rate | 250 | kSPS |
| Analog Voltage Supply | 4.75 - 5.25 | V |
| Digital Voltage Supply | 4.75 - 5.25 | V |
| Input Range | ±10 V, 0 V to 5 V | V |
| Input Type | Single-Ended | |
| Architecture | SAR | |
| Interface | SPI | |
| Operating Temperature Range | -40°C to 85°C | °C |
| Power Consumption (Typical) | 70 mW | mW |
| SINAD | 73 dB | dB |
| INL (Max) | ±0.45 LSB | LSB |
| DNL (Max) | ±0.45 LSB | LSB |
| Package Type | SOIC-20 |
Key Features
- 12-bit successive approximation register (SAR) ADC with sample-and-hold and reference.
- 250-kHz sampling rate.
- Six specified input ranges including ±10 V and 0 V to 5 V.
- SPI compatible serial output with daisy-chain (TAG) feature.
- Internal or external reference mode.
- Low power dissipation of 70 mW at 250 kSPS.
- Simple DSP interface.
- Available in a 20-pin SOIC package.
- Full-scale error and bipolar zero error drift specifications.
- Support for both straight binary and binary two’s complement data format.
Applications
- Industrial Process Control.
- Data Acquisition Systems.
- Medical Equipment.
- Instrumentation.
- Digital Signal Processing.
Q & A
- What is the resolution of the ADS8508IBDW ADC?
The resolution of the ADS8508IBDW is 12 bits.
- What is the sampling rate of the ADS8508IBDW?
The sampling rate of the ADS8508IBDW is 250 kSPS.
- What are the input voltage ranges for the ADS8508IBDW?
The input voltage ranges include ±10 V, ±5 V, ±3.33 V, ±5 V, and 0 V to 5 V.
- What type of interface does the ADS8508IBDW use?
The ADS8508IBDW uses an SPI compatible serial interface.
- Can the ADS8508IBDW use an external reference?
Yes, the ADS8508IBDW can use either an internal or external reference.
- What is the typical power consumption of the ADS8508IBDW at 250 kSPS?
The typical power consumption is 70 mW at 250 kSPS.
- What is the operating temperature range of the ADS8508IBDW?
The operating temperature range is -40°C to 85°C.
- What package type is the ADS8508IBDW available in?
The ADS8508IBDW is available in a 20-pin SOIC package.
- Does the ADS8508IBDW support daisy-chaining?
Yes, the ADS8508IBDW supports daisy-chaining through its TAG feature.
- What are some common applications of the ADS8508IBDW?
Common applications include industrial process control, data acquisition systems, medical equipment, instrumentation, and digital signal processing.
