Overview
The ADS8509IDWR is a 16-bit, 250-kSPS (kilosamples per second) successive approximation register (SAR) analog-to-digital converter (ADC) produced by Texas Instruments. This device integrates a sample-and-hold circuit, reference, clock, and a serial data interface, making it a comprehensive solution for various analog-to-digital conversion needs. It operates on a single 5-V supply and is available in 20-pin SOIC and 28-pin SSOP packages, ensuring flexibility in design and implementation.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 16 | Bits |
| Sampling Rate | 250 | kSPS |
| Input Voltage Range | ±10 V, ±5 V, ±3.33 V, ±5 V, 0 V to 5 V | V |
| Integral Linearity Error (INL) | -3 to 3 | LSB |
| Differential Linearity Error (DNL) | -2 to 2 | LSB |
| Power Dissipation | 70 mW (typical at 250 kSPS) | mW |
| Operating Temperature Range | -40°C to 85°C | °C |
| Package Type | 20-pin SOIC, 28-pin SSOP | |
| Supply Voltage (Analog and Digital) | 4.75 V to 5.25 V | V |
Key Features
- SPI compatible serial output with daisy-chain (TAG) feature for cascading multiple converters.
- Single 5-V supply operation with low power dissipation (typically 70 mW at 250 kSPS).
- Internal or external reference options with an internal reference voltage of approximately 2.5 V.
- Precision resistors providing various input ranges including ±10 V and 0 V to 5 V.
- Simple DSP interface with output synchronization pulse for ease of use with standard DSP processors.
- No missing codes and ±1 LSB max DNL, ensuring high accuracy.
- Pin-compatible with ADS7809 (low speed) and available in 20-pin SO and 28-pin SSOP packages.
Applications
- Industrial Process Control
- Data Acquisition Systems
- Digital Signal Processing
- Medical Equipment
- Instrumentation
Q & A
- What is the resolution of the ADS8509IDWR?
The ADS8509IDWR has a resolution of 16 bits.
- What is the sampling rate of the ADS8509IDWR?
The sampling rate is 250 kSPS.
- What are the input voltage ranges supported by the ADS8509IDWR?
The device supports input voltage ranges of ±10 V, ±5 V, ±3.33 V, and 0 V to 5 V.
- Can the ADS8509IDWR use an external reference?
- What is the power dissipation of the ADS8509IDWR at 250 kSPS?
The typical power dissipation is 70 mW at 250 kSPS.
- What are the package options for the ADS8509IDWR?
The device is available in 20-pin SOIC and 28-pin SSOP packages.
- What is the operating temperature range of the ADS8509IDWR?
The operating temperature range is -40°C to 85°C.
- Does the ADS8509IDWR support SPI interface?
- Can multiple ADS8509IDWR converters be cascaded?
- What is the typical supply voltage for the ADS8509IDWR?
The typical supply voltage is 5 V for both analog and digital supplies.
