Overview
The ADS8326IDGKR is a 16-bit, high-speed, microPower sampling analog-to-digital converter (ADC) produced by Texas Instruments. This device is designed to operate within a supply voltage range of 2.7V to 5.5V, making it highly versatile for various applications. The ADS8326 is known for its low power consumption, even at full data rates, and its ability to spend most of its time in power-down mode at lower data rates. This ADC features a synchronous serial (SPI/SSI-compatible) interface and a differential input, with the reference voltage adjustable within the range of 0.1V to VDD.
Key Specifications
| Parameter | Test Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Resolution | - | 16 | 16 | 16 | Bits |
| Integral Linearity Error (INL) | VDD = 5V, VREF = 5V | -1.5 | ±1 | +1.5 | LSB |
| Differential Linearity Error (DNL) | VDD = 5V, VREF = 5V | -1 | ±0.5 | +1 | LSB |
| Offset Error (VOS) | VDD = 5V, VREF = 5V | -1.5 | ±0.75 | +1.5 | mV |
| Gain Error (GERR) | VDD = 5V, VREF = 5V | -12 | ±6 | +12 | LSB |
| Power Dissipation | VDD = 2.7V, fS = 200kHz | 3.73 | - | 5.4 | mW |
| Power-Down Supply Current | VDD = 2.7V | 0.1 | - | 0.1 | μA |
| Operating Temperature Range | - | -40 | - | +85 | °C |
| Package Type | - | MSOP-8 | - | - | - |
Key Features
- 16-bit resolution with no missing codes across the full supply range.
- Very low noise: 3LSBPP (peak-to-peak).
- Excellent linearity: ±1LSB typ, ±1.5LSB max INL; ±0.6LSB typ, ±1LSB max DNL.
- Simultaneous sampling capability for multichannel systems.
- MicroPower operation: 10mW at 5V, 250kHz; 4mW at 2.7V, 200kHz.
- Synchronous serial (SPI/SSI-compatible) interface.
- Differential input with adjustable reference voltage (0.1V to VDD).
- Available in MSOP-8 and SON-8 packages.
- Pin-compatible with several other TI ADC models (e.g., ADS7816, ADS7822, ADS7826).
Applications
- Battery-operated systems.
- Remote data acquisition modules.
- Isolated data acquisition systems.
- Industrial controls.
- Robotics.
- Vibration analysis.
- Simultaneous multichannel systems.
Q & A
- What is the resolution of the ADS8326 ADC?
The ADS8326 has a 16-bit resolution.
- What is the operating supply voltage range of the ADS8326?
The ADS8326 operates within a supply voltage range of 2.7V to 5.5V.
- What are the typical power consumption values for the ADS8326 at different frequencies?
At 2.7V, the power consumption is approximately 4mW at 200kHz and 10mW at 5V, 250kHz.
- What is the linearity performance of the ADS8326?
The ADS8326 has an integral linearity error (INL) of ±1LSB typ, ±1.5LSB max, and a differential linearity error (DNL) of ±0.6LSB typ, ±1LSB max.
- What types of packages are available for the ADS8326?
The ADS8326 is available in MSOP-8 and SON-8 packages.
- Is the ADS8326 compatible with other TI ADC models?
Yes, the ADS8326 is pin-compatible with several other TI ADC models such as the ADS7816, ADS7822, and ADS7826.
- What is the typical offset error of the ADS8326?
The typical offset error (VOS) is ±0.75mV.
- What are some common applications of the ADS8326?
The ADS8326 is commonly used in battery-operated systems, remote data acquisition modules, isolated data acquisition systems, industrial controls, robotics, and vibration analysis.
- How does the ADS8326 handle power management?
The ADS8326 has a power-down mode that significantly reduces power consumption when not actively converting data.
- What is the signal-to-noise ratio (SNR) of the ADS8326?
The SNR is typically around 91 dB for a 5VPP sinewave at 2kHz.
