Overview
The ADS8422IBPFBR is a high-performance, 16-bit analog-to-digital converter (ADC) produced by Texas Instruments. It is part of the high-speed successive approximation register (SAR) ADC family, known for its high resolution and low latency. This device features a fully differential, pseudo-bipolar input range of -4 V to +4 V, making it suitable for a variety of applications requiring precise analog-to-digital conversion. The ADS8422IBPFBR includes an internal 4.096-V reference and operates at a sampling rate of 4 MSPS, with a throughput rate of 4 MHz. It is available in a 48-pin TQFP package and is characterized over the industrial temperature range of -40°C to +85°C.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Resolution | - | 16 Bits | - | - |
| Sampling Rate | - | 4 MSPS | - | - |
| Input Range | -4 V | - | +4 V | V |
| Integral Linearity (INL) | -6 | ±2 | 6 | LSB |
| Differential Linearity (DNL) | -2 | ±0.7 | 2 | LSB |
| Offset Error | -0.5 | ±0.25 | 0.5 | mV |
| Gain Error | -0.1 | ±0.05 | 0.1 | %FS |
| SNR | - | 92 dB | - | - |
| THD | - | -102 dB | - | - |
| Power Consumption | - | 155 mW at 4 MHz | - | - |
| Operating Temperature Range | -40°C | - | +85°C | °C |
| Package Type | - | 48-Pin 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 and a throughput rate of 4 MHz.
- 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 ease of integration.
- High resolution with 1 LSB INL and 92 dB SNR, -102 dB THD.
- Common-mode rejection ratio of 81 dB at dc.
- Operating temperature range of -40°C to +85°C.
Applications
- Data acquisition systems.
- Instrumentation.
- Transducer interfaces.
- Medical instruments.
- Spectrum analysis.
- Automated test equipment (ATE).
- Digital signal processing systems requiring high-speed and high-resolution ADCs.
Q & A
- What is the resolution of the ADS8422IBPFBR?
The ADS8422IBPFBR has a resolution of 16 bits.
- What is the sampling rate of the ADS8422IBPFBR?
The sampling rate of the ADS8422IBPFBR is 4 MSPS.
- What is the input range of the ADS8422IBPFBR?
The input range is -4 V to +4 V.
- Does the ADS8422IBPFBR 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 ADS8422IBPFBR at 4 MHz?
The power consumption is 155 mW at 4 MHz.
- What is the operating temperature range of the ADS8422IBPFBR?
The operating temperature range is -40°C to +85°C.
- What type of package does the ADS8422IBPFBR come in?
The ADS8422IBPFBR comes in a 48-pin TQFP package.
- What are some common applications of the ADS8422IBPFBR?
Common applications include data acquisition systems, instrumentation, transducer interfaces, medical instruments, spectrum analysis, and automated test equipment (ATE).
- Does the ADS8422IBPFBR support power-down modes?
Yes, it has a flexible power-down scheme to reduce power consumption when not in use.
- What is the common-mode rejection ratio of the ADS8422IBPFBR?
The common-mode rejection ratio is 81 dB at dc.
