LMP90100MHX/NOPB vs TLV990-21PFB
| Part Number |
|
|
| Category | Data Acquisition - Analog Front End (AFE) | Data Acquisition - Analog Front End (AFE) |
| Manufacturer | Texas Instruments | Texas Instruments |
| Description | IC AFE 1 CHAN 24BIT 28HTSSOP | IC AFE 1 CHAN 10BIT 48TQFP |
| Package | -Reel® | Tube |
| Series | - | - |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 28-PowerTSSOP (0.173\", 4.40mm Width) | 48-TQFP |
| Supplier Device Package | 28-HTSSOP | 48-TQFP (7x7) |
| Power (Watts) | - | 150 mW |
| Number of Channels | 1 | 1 |
| Number of Bits | 24 | 10 |
| Voltage - Supply, Analog | 2.85V ~ 5.5V | 2.7V ~ 3.3V |
| Voltage - Supply, Digital | 2.7V ~ 5.5V | 2.7V ~ 3.3V |
-
1. What is ADC in data acquisition system?
ADC (Analog-to-Digital Converter) is an electronic device that converts analog signals into digital signals. Its main function is to convert continuously changing analog signals (such as voltage, current, etc.) into discrete digital signals for processing and analysis by digital systems (such as microcontrollers, DSPs, etc.).
Working Principle of ADC
The working principle of ADC includes the following core steps:
Sampling: Read the input analog signal at a fixed time interval to obtain the instantaneous voltage value. The sampling frequency is determined by the sampling rate of the ADC.
Hold: Temporarily fix the instantaneous voltage value obtained by sampling inside the ADC for subsequent processing to prevent the input signal from changing during the quantization process.
Quantization: Map the sampled analog voltage value to a finite discrete digital level, and convert the continuous analog value into a discrete digital value.
Encoding Encode the quantized digital signal and output it as a digital signal. -
2. What is the analog front end in BMS?
The analog front end (AFE) chip in BMS is a key component in the battery management system (BMS). It is mainly responsible for collecting battery parameters such as voltage, current and temperature, and performing corresponding processing and protection.
The specific functions of the AFE chip include:
Voltage, current and temperature measurement: The AFE chip monitors the battery voltage, current and temperature in real time through high-precision analog-to-digital conversion and filtering processing to ensure the safety and life of the battery.
Signal acquisition: Collect analog signals such as voltage and current from the battery, and convert and process them.
Communication: Exchange information with external devices such as controllers to solve problems such as safety, availability, and ease of use in lithium battery systems.
Protection function: Provide battery voltage, temperature and current readings through a high-precision fuel gauge to prevent battery overcharge, over discharge and short circuit. -
3. What is the difference between ADC and AFE?
The main difference between ADC (analog-to-digital converter) and AFE (analog front end) lies in their functions and application scenarios.
The main function of ADC is to convert analog signals into digital signals, while AFE is a more complex integrated component that includes sensor interface, analog signal conditioning circuit, multi-way switch, sample and hold, ADC, data cache and control logic. AFE not only performs the functions of ADC, but also contains additional signal conditioning functions such as filtering, amplification and digital signal processing, which makes it more efficient and flexible in processing complex signals. -
4. What is AFE in VLSI?
AFE (Analog Front End) plays a vital role in VLSI (Very Large Scale Integration).
Definition and function of AFE
AFE is the front-end part of the signal processing chain, which is mainly responsible for processing analog signals. It usually includes components such as amplifiers, analog-to-digital converters (ADCs) and digital-to-analog converters (DACs), which can convert analog signals into digital signals that can be processed by digital systems. The functions of AFE cover diverse tasks such as amplification, filtering, data conversion, and modulation and demodulation of signals.
Application of AFE in VLSI
AFE chips are indispensable in modern electronic devices and are widely used in many fields, including:
Wired and wireless communications: for signal reception and transmission.
Industrial electronics: for high-precision measurement and control.
Consumer products: such as smart phones, medical instruments, industrial automation and even automotive electronics.
