Overview
The LTC2298CUP, produced by Analog Devices Inc., is a high-performance, dual 14-bit analog-to-digital converter (ADC) designed for digitizing high-frequency, wide dynamic range signals. This ADC operates at a sampling rate of up to 65 Msps and is optimized for low power consumption, making it suitable for demanding applications in imaging and communications.
With its single 3V supply and separate output supply, the LTC2298CUP can drive logic levels from 0.5V to 3.6V. It features a pipeline architecture, a clock duty cycle stabilizer, and shutdown and nap modes for power management. The device is available in a 64-lead QFN package and is RoHS compliant.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Resolution | 14 | Bits |
| Sampling Rate | 65 | Msps |
| Number of Channels | 2 | |
| Input Type | Differential/Single-Ended | |
| Architecture | Pipeline | |
| Analog Supply Voltage | 3V | |
| Power Dissipation | 400 mW | |
| Integral Nonlinearity (INL) | ±1.2 LSB | |
| Differential Nonlinearity (DNL) | ±0.5 LSB | |
| Signal-to-Noise and Distortion Ratio (SINAD) | 74.3 dB | |
| Spurious Free Dynamic Range (SFDR) | 90 dB | |
| Full Power Bandwidth S/H | 575 MHz | |
| Package/Case | 64-Lead QFN |
Key Features
- Integrated Dual 14-Bit ADCs: Designed for high-frequency, wide dynamic range signal digitization.
- Low Power Consumption: 400 mW at 65 Msps, with shutdown and nap modes for power management.
- High AC Performance: 74.3 dB SNR and 90 dB SFDR at the Nyquist frequency.
- Flexible Input Range: Supports input ranges from 1 Vpp to 2 Vpp.
- Clock Duty Cycle Stabilizer: Ensures high performance across a wide range of clock duty cycles.
- Multiplexed or Separate Data Bus: Optional multiplexer allows both channels to share a digital output bus.
- Pin Compatible Family: Compatible with other ADCs in the LTC229x series.
Applications
- Medical Imaging Systems: Ideal for high-resolution imaging applications requiring high-speed ADCs.
- Radar Applications: Suitable for radar systems that need to digitize high-frequency signals with high fidelity.
- Communications Infrastructure: Used in various communication systems that require high-speed, low-power ADCs.
- Signal Processing Tasks: Applicable in automated test systems and other signal processing applications.
- Medical Device Integration: Integrated into medical devices that require precise and high-speed analog-to-digital conversion.
Q & A
- What is the resolution of the LTC2298CUP ADC?
The LTC2298CUP has a resolution of 14 bits.
- What is the maximum sampling rate of the LTC2298CUP?
The maximum sampling rate is 65 Msps.
- What is the power consumption of the LTC2298CUP at 65 Msps?
The power consumption is 400 mW at 65 Msps.
- What is the signal-to-noise and distortion ratio (SINAD) of the LTC2298CUP?
The SINAD is 74.3 dB.
- What is the spurious free dynamic range (SFDR) of the LTC2298CUP?
The SFDR is 90 dB at the Nyquist frequency.
- What package type is the LTC2298CUP available in?
The LTC2298CUP is available in a 64-lead QFN package.
- Does the LTC2298CUP support multiplexed or separate data buses?
Yes, it supports both multiplexed and separate data buses.
- What are the shutdown and nap modes used for in the LTC2298CUP?
These modes are used for power management to reduce power consumption when the device is not actively converting signals.
- What is the full power bandwidth of the sample and hold (S/H) circuit in the LTC2298CUP?
The full power bandwidth of the S/H circuit is 575 MHz.
- In what applications is the LTC2298CUP commonly used?
It is commonly used in medical imaging systems, radar applications, communications infrastructure, and signal processing tasks.
