Overview
The ADS8508IBDWR is a 12-bit sampling analog-to-digital (A/D) converter produced by Texas Instruments. It utilizes state-of-the-art CMOS structures and features a capacitor-based, successive approximation register (SAR) A/D converter. This device includes sample-and-hold, reference, clock, and a serial data interface, making it a comprehensive solution for various applications. The ADS8508 operates at a 250-kHz sampling rate across the full temperature range and can be powered from a single +5-V supply, with a power dissipation of typically 70 mW at 250 KSPS.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 12 | Bits |
| Sampling Rate | 250 kHz | |
| Input Ranges | 4 V, 5 V, 10 V, ±3.33 V, ±5 V, ±10 V | |
| SINAD (with 45-kHz input) | 73 dB | |
| Integral Nonlinearity (INL) | ±0.45 LSB | |
| Differential Nonlinearity (DNL) | ±0.45 LSB | |
| Bipolar Zero Error | ±1 LSB | |
| Bipolar Zero Error Drift | ±0.4 PPM/°C | |
| Supply Voltage | 5 V | |
| Power Dissipation (at 250 KSPS) | 70 mW (typ) | |
| Operating Temperature Range | -40°C to 85°C | |
| Package Type | 20-Pin SOIC |
Key Features
- 250-kHz sampling rate over the full temperature range
- Six specified input ranges: 4 V, 5 V, 10 V, ±3.33 V, ±5 V, and ±10 V
- 73-dB SINAD with a 45-kHz input
- ±0.45 LSB max INL and DNL, with no missing codes
- ±1 LSB bipolar zero errors and ±0.4 PPM/°C bipolar zero error drift
- SPI compatible serial output with daisy-chain (TAG) feature
- Uses internal or external reference
- Simple DSP interface
- Pin-compatible with ADS7808 (low speed) and 16-bit ADS8509/7809
Applications
- Industrial Process Control
- Data Acquisition Systems
- Digital Signal Processing
- Medical Equipment
- Instrumentation
Q & A
- What is the resolution of the ADS8508IBDWR?
The ADS8508IBDWR has a resolution of 12 bits.
- What is the sampling rate of the ADS8508IBDWR?
The sampling rate is 250 kHz.
- What are the input voltage ranges supported by the ADS8508IBDWR?
The device supports input ranges of 4 V, 5 V, 10 V, ±3.33 V, ±5 V, and ±10 V.
- What is the SINAD of the ADS8508IBDWR with a 45-kHz input?
The SINAD is 73 dB.
- Can the ADS8508IBDWR use an external reference?
- What is the typical power dissipation of the ADS8508IBDWR at 250 KSPS?
The typical power dissipation is 70 mW.
- What is the operating temperature range of the ADS8508IBDWR?
The operating temperature range is -40°C to 85°C.
- What type of package does the ADS8508IBDWR come in?
The device comes in a 20-Pin SOIC package.
- Is the ADS8508IBDWR compatible with other Texas Instruments ADCs?
- How does the ADS8508IBDWR handle data output?
The device can output data using either an internal clock or an external data clock, and it supports SPI compatible serial output with a daisy-chain feature.
