Overview
The AD7898AR-3 is a high-performance, 12-bit analog-to-digital converter (ADC) produced by Analog Devices Inc. This component operates from a single 5 V supply and is housed in a compact 8-lead Standard Small Outline Package (SOIC). The AD7898AR-3 features a successive approximation A/D converter, an on-chip track/hold amplifier, and a high-speed serial interface, making it suitable for a variety of applications requiring fast and accurate analog-to-digital conversion.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Bits | 12 |
| Sampling Rate | 220 kSPS |
| Supply Voltage | 5 V ± 5% |
| Operating Temperature | –40°C to +85°C |
| Input Range | ±2.5 V (AD7898-3) |
| Power Consumption | 22.5 mW Max |
| Package Type | 8-SOIC (0.154", 3.90mm Width) |
| Data Interface | SPI |
| Architecture | Successive Approximation (SAR) |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Key Features
- Fast 12-bit ADC with a throughput rate of up to 220 kSPS.
- On-chip track/hold amplifier and high-speed serial interface.
- Single 5 V supply operation with low power consumption of 22.5 mW max.
- Flexible serial interface allowing direct connection to either 3 V or 5 V processor systems.
- High input impedance and dynamic performance parameters including harmonic distortion and signal-to-noise ratio.
- Dual operation modes: Mode 0 (conversion initiated by CONVST input) and Mode 1 (conversion controlled by an externally applied SCLK).
Applications
The AD7898AR-3 is suitable for various applications requiring high-speed and accurate analog-to-digital conversion, such as:
- Industrial control systems.
- Medical devices.
- Aerospace and defense systems.
- Automotive systems.
- Data acquisition systems.
Q & A
- What is the resolution of the AD7898AR-3 ADC?
The AD7898AR-3 has a resolution of 12 bits. - What is the maximum sampling rate of the AD7898AR-3?
The maximum sampling rate is 220 kSPS. - What is the supply voltage for the AD7898AR-3?
The supply voltage is 5 V ± 5%. - What are the operating temperature ranges for the AD7898AR-3?
The operating temperature ranges are –40°C to +85°C. - What is the input range for the AD7898-3 model?
The input range for the AD7898-3 model is ±2.5 V. - How much power does the AD7898AR-3 consume?
The AD7898AR-3 consumes a maximum of 22.5 mW. - What type of package does the AD7898AR-3 come in?
The AD7898AR-3 comes in an 8-lead Standard Small Outline Package (SOIC). - What type of data interface does the AD7898AR-3 use?
The AD7898AR-3 uses an SPI (Serial Peripheral Interface) data interface. - What architecture does the AD7898AR-3 employ?
The AD7898AR-3 employs a Successive Approximation (SAR) architecture. - Is the AD7898AR-3 lead-free and RoHS compliant?
No, the AD7898AR-3 contains lead and is not RoHS compliant.
