Overview
The LTC2285IUP, developed by Analog Devices Inc., is a dual 14-bit, 125Msps low power analog-to-digital converter (ADC). This component is designed to digitize high frequency, wide dynamic range signals, making it ideal for demanding applications in imaging and communications. The LTC2285 operates on a single 3V supply, enabling low power operation, and features a separate output supply that allows the outputs to drive 0.5V to 3.6V logic. Its high performance is characterized by 72.2dB SNR and 82dB SFDR for signals at the Nyquist frequency, along with excellent DC specifications including ±1.5LSB INL and ±0.6LSB DNL.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Number of Bits | 14 | |
| Number of A/D Converters | 2 | |
| Sampling Rate | 125 Msps | |
| Analog Input Range | ±0.5V to ±1V | V |
| Supply Voltage (Analog and Digital) | 2.85V to 3.4V | V |
| Power Dissipation | 790 mW | mW |
| SNR | 72.2 dB | dB |
| SFDR | 82 dB | dB |
| Operating Temperature Range | -40°C to 85°C | °C |
| Package Type | 64-QFN (9x9) | |
| Input Type | Differential, Single Ended |
Key Features
- Simultaneous sampling of two channels
- High-speed sampling rate of 125 Msps
- Low power operation with a single 3V supply
- Flexible input range: 1Vpp to 2Vpp
- High AC performance: 72.2dB SNR and 82dB SFDR
- Low transition noise: 1.3LSBRMS
- Clock duty cycle stabilizer for high performance across various clock duty cycles
- Shutdown and nap modes for power management
- Data ready output clock (CLKOUT)
- Pin compatible with other ADCs in the family (e.g., LTC2283, LTC2285)
Applications
- Communication devices: wireless and wired broadband communication systems
- Imaging systems: high-speed imaging applications requiring high dynamic range
- Health monitoring systems: precise analog-to-digital conversion for medical devices
- Digital measuring systems: high-precision measurement instruments
- Spectral analysis: applications requiring high-frequency signal processing
- Portable instrumentation: handheld devices needing low power and high performance ADCs
Q & A
- What is the sampling rate of the LTC2285IUP?
The sampling rate of the LTC2285IUP is 125 Msps.
- What is the resolution of the LTC2285IUP?
The LTC2285IUP is a 14-bit ADC.
- What is the operating temperature range of the LTC2285IUP?
The operating temperature range is -40°C to 85°C.
- What types of inputs does the LTC2285IUP support?
The LTC2285IUP supports both differential and single-ended inputs.
- What is the power dissipation of the LTC2285IUP?
The power dissipation is approximately 790 mW.
- Does the LTC2285IUP have power management features?
Yes, it includes shutdown and nap modes for power management.
- What is the SNR of the LTC2285IUP at the Nyquist frequency?
The SNR is 72.2 dB at the Nyquist frequency.
- Is the LTC2285IUP RoHS compliant?
Yes, the LTC2285IUP is lead-free and RoHS compliant.
- What package type does the LTC2285IUP come in?
The LTC2285IUP comes in a 64-QFN (9x9) package.
- Does the LTC2285IUP have a clock duty cycle stabilizer?
Yes, it includes an optional clock duty cycle stabilizer for high performance across various clock duty cycles.
