Overview
The LTC2281CUP, produced by Analog Devices Inc., is a high-performance, dual-channel, 10-bit analog-to-digital converter (ADC) designed for digitizing high-frequency, wide dynamic range signals. This ADC operates at a sample rate of 125Msps and is optimized for low power consumption, making it suitable for demanding applications in imaging and communications.
The device features a single 3V supply and supports a flexible input range of 1V to 2V peak-to-peak. It is known for its excellent AC performance, including a signal-to-noise ratio (SNR) of 61.6dB and a spurious free dynamic range (SFDR) of 82dB at the Nyquist frequency. The LTC2281CUP also boasts high channel isolation of 110dB at 100MHz.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Resolution | 10 | - | - | Bits (No Missing Codes) |
| Sample Rate | - | 125 | - | Msps |
| Integral Linearity Error | -0.7 | ±0.1 | 0.7 | LSB |
| Differential Linearity Error | -0.5 | ±0.1 | 0.5 | LSB |
| Transition Noise | - | 0.08 | - | LSBRMS |
| Supply Voltage | 2.85 | - | 3.4 | V |
| Power Consumption | - | 790 | - | mW |
| SNR | - | 61.6 | - | dB |
| SFDR | - | 82 | - | dB |
| Channel Isolation at 100MHz | - | 110 | - | dB |
| Full Power Bandwidth S/H | - | 640 | - | MHz |
| Package Type | - | 64-Lead QFN (9mm x 9mm x 0.75mm w/ EP) | - | - |
| Operating Temperature Range | 0 | - | 70 | °C (Commercial Grade) |
| Operating Temperature Range | -40 | - | 85 | °C (Industrial Grade) |
Key Features
- Integrated Dual 10-Bit ADCs with a sample rate of 125Msps.
- Single 3V supply (2.85V to 3.4V) for low power operation.
- Flexible input range: 1V to 2V peak-to-peak.
- High AC performance: 61.6dB SNR and 82dB SFDR at the Nyquist frequency.
- High channel isolation of 110dB at 100MHz.
- 640MHz full power bandwidth sample-and-hold (S/H).
- Optional clock duty cycle stabilizer for high performance across a wide range of clock duty cycles.
- Data ready output clock (CLKOUT) for latching output data.
- Shutdown and nap modes for power management.
- 64-Lead QFN package with exposed pad for improved thermal performance.
Applications
- Wireless and Wired Broadband Communication Systems.
- Imaging Systems, including medical and industrial imaging.
- Spectral Analysis and Signal Processing.
- Portable Instrumentation and Test Equipment.
- Industrial Automation and Control Systems.
Q & A
- What is the resolution and sample rate of the LTC2281CUP?
The LTC2281CUP has a resolution of 10 bits and a sample rate of 125Msps.
- What is the power supply requirement for the LTC2281CUP?
The LTC2281CUP operates on a single 3V supply (2.85V to 3.4V).
- What are the key AC performance metrics of the LTC2281CUP?
The LTC2281CUP features 61.6dB SNR and 82dB SFDR at the Nyquist frequency.
- What is the channel isolation of the LTC2281CUP at 100MHz?
The channel isolation is 110dB at 100MHz.
- Does the LTC2281CUP support flexible input configurations?
Yes, it supports input ranges from 1V to 2V peak-to-peak.
- What is the full power bandwidth of the sample-and-hold (S/H) in the LTC2281CUP?
The full power bandwidth of the S/H is 640MHz.
- Does the LTC2281CUP have power management features?
Yes, it includes shutdown and nap modes for power management.
- What is the package type of the LTC2281CUP?
The LTC2281CUP is packaged in a 64-Lead QFN (9mm x 9mm x 0.75mm w/ EP).
- What are the typical operating temperature ranges for the LTC2281CUP?
The commercial grade operates from 0°C to 70°C, and the industrial grade operates from -40°C to 85°C.
- What are some common applications of the LTC2281CUP?
Common applications include wireless and wired broadband communication, imaging systems, spectral analysis, portable instrumentation, and industrial automation.
