Overview
The ADS8422IBPFBTG4 is a high-performance, 16-bit analog-to-digital converter (ADC) produced by Texas Instruments. This device is part of the high-speed successive approximation register (SAR) ADC family and is characterized by its pseudo-bipolar, fully differential input and high-resolution capabilities. The ADS8422 features an internal 4.096-V reference, zero latency, and a high-speed parallel interface, making it suitable for a variety of applications requiring precise and rapid data conversion.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 16 Bits | |
| Sampling Rate | 4 MSPS | |
| Input Range | -4 V to +4 V | V |
| Integral Linearity (INL) | ±2 LSB (Typ) | LSB |
| Differential Linearity (DNL) | ±1 LSB (Typ) | LSB |
| Offset Error | ±0.5 mV (Typ) | mV |
| Gain Error | ±0.1 %FS (Typ) | %FS |
| Signal-to-Noise Ratio (SNR) | 92 dB (Typ) | dB |
| Total Harmonic Distortion (THD) | -102 dB (Typ) | dB |
| Power Consumption | 155 mW at 4 MHz (Typ) | mW |
| Operating Temperature Range | -40°C to +85°C | °C |
| Package Type | 48-Pin 9×9 TQFP |
Key Features
- Fully differential, pseudo-bipolar input with a range of -4 V to +4 V.
- High-speed, 16-bit SAR ADC with a sampling rate of 4 MSPS.
- Internal 4.096-V reference with an option for external reference use.
- Zero latency and high-speed parallel interface.
- Low power consumption: 155 mW at 4 MHz.
- Flexible power-down scheme.
- Pin-out similar to ADS8412/8402 for easy integration.
- High common-mode rejection ratio (CMRR) of 81 dB.
- Internal sample and hold function.
Applications
- Data acquisition systems.
- Instrumentation.
- Medical instruments.
- Spectrum analysis.
- Automatic test equipment (ATE).
- Transducer interfaces.
Q & A
- What is the resolution of the ADS8422IBPFBTG4?
The ADS8422IBPFBTG4 has a resolution of 16 bits.
- What is the sampling rate of the ADS8422IBPFBTG4?
The sampling rate is 4 MSPS.
- What is the input range of the ADS8422IBPFBTG4?
The input range is -4 V to +4 V.
- Does the ADS8422IBPFBTG4 have an internal reference?
Yes, it has an internal 4.096-V reference, but it can also operate with an external reference.
- What is the power consumption of the ADS8422IBPFBTG4 at 4 MHz?
The power consumption is 155 mW at 4 MHz.
- What is the operating temperature range of the ADS8422IBPFBTG4?
The operating temperature range is -40°C to +85°C.
- What type of package does the ADS8422IBPFBTG4 come in?
The device is available in a 48-pin 9×9 TQFP package.
- What are some of the key applications for the ADS8422IBPFBTG4?
Key applications include data acquisition systems, instrumentation, medical instruments, spectrum analysis, and automatic test equipment (ATE).
- Does the ADS8422IBPFBTG4 have a sample and hold function?
Yes, it includes an internal sample and hold function.
- What is the common-mode rejection ratio (CMRR) of the ADS8422IBPFBTG4?
The CMRR is 81 dB.
