Overview
The AD9218BST-80 is a dual 10-bit monolithic sampling analog-to-digital converter (ADC) produced by Analog Devices Inc. This component is designed for high-speed, low-power applications and features on-chip track-and-hold circuits. It operates at conversion rates of up to 80 MSPS and is known for its outstanding dynamic performance across its full operating range. The AD9218 is suitable for a variety of applications requiring high-speed data acquisition with minimal power consumption.
Key Specifications
| Parameter | Min | Typ | Max |
|---|---|---|---|
| Conversion Rate | 20 MSPS | - | 80 MSPS |
| Analog Input Range | 1 V p-p or 2 V p-p | - | - |
| Supply Voltage | 2.7 V | 3.0 V | 3.6 V |
| Power Consumption | - | 275 mW @ 105 MSPS per channel | - |
| Analog Bandwidth | - | 300 MHz each channel | - |
| SNR | - | 57 dB @ 41 MHz, Encode = 80 MSPS | - |
| Aperture Delay | - | 2 ns | - |
| Aperture Uncertainty (Jitter) | - | 3 ps rms | - |
| Output Valid Time | - | 2.5 ns | - |
| Output Propagation Delay | - | 4.5 ns to 7 ns | - |
| Output Rise Time | - | 1.0 ns | - |
| Output Fall Time | - | 1.2 ns | - |
Key Features
- Dual 10-bit ADC with on-chip track-and-hold circuits
- Conversion rates of 40, 65, 80, and 105 MSPS
- Low power consumption: 275 mW at 105 MSPS per channel
- 300 MHz analog bandwidth each channel
- SNR of 57 dB @ 41 MHz, Encode = 80 MSPS
- 1 V p-p or 2 V p-p analog input range each channel
- 3.0 V single-supply operation (2.7 V to 3.6 V)
- Power-down mode for single-channel operation
- Twos complement or offset binary output mode
- Output data alignment mode
- Pin compatible with the 8-bit AD9288
- –75 dBc crosstalk between channels
Applications
- Battery-powered instruments
- Hand-held scopemeters
- Low cost digital oscilloscopes
- I and Q communications
- Ultrasound equipment
Q & A
- What is the maximum conversion rate of the AD9218BST-80?
The maximum conversion rate of the AD9218BST-80 is 80 MSPS. - What is the typical power consumption of the AD9218 at 80 MSPS?
The typical power consumption at 80 MSPS is approximately 275 mW per channel. - What is the analog bandwidth of each channel?
The analog bandwidth of each channel is 300 MHz. - What are the available output data formats?
The available output data formats are twos complement and offset binary. - Can the AD9218 operate in power-down mode?
Yes, the AD9218 can operate in power-down mode for single-channel operation. - What is the supply voltage range for the AD9218?
The supply voltage range is from 2.7 V to 3.6 V. - Is the AD9218 compatible with other ADC models?
The AD9218 is pin compatible with the 8-bit AD9288. - What is the crosstalk between channels?
The crosstalk between channels is –75 dBc. - What are some typical applications of the AD9218?
Typical applications include battery-powered instruments, hand-held scopemeters, low cost digital oscilloscopes, I and Q communications, and ultrasound equipment. - What is the output valid time and propagation delay?
The output valid time is 2.5 ns, and the output propagation delay is between 4.5 ns and 7 ns.
