Overview
The LTC2281IUP, manufactured by Analog Devices Inc., is a dual 10-bit, 125Msps low power 3V analog-to-digital converter (ADC). This device is designed for digitizing high frequency, wide dynamic range signals, making it ideal for demanding imaging and communications applications. It operates on a single 3V supply, enabling low power operation, and features a separate output supply that allows the outputs to drive logic levels from 0.5V to 3.6V.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Resolution | 10 | 10 | 10 | bits | |
| Sampling Rate | 125 | 125 | 125 | Msps | |
| Supply Voltage | 2.85 | 3.4 | V | ||
| Analog Input Range | 2.85V < VDD < 3.4V | ±0.5 | ±1 | V | |
| Signal-to-Noise Ratio (SNR) | Signals at the Nyquist frequency | 61.6 | dB | ||
| Spurious Free Dynamic Range (SFDR) | Signals at the Nyquist frequency | 82 | dB | ||
| Integral Nonlinearity (INL) | ±0.1 | ±0.1 | LSB | ||
| Differential Nonlinearity (DNL) | ±0.1 | ±0.1 | LSB | ||
| Transition Noise | SENSE = 1V | 0.08 | LSBRMS | ||
| Package | 64-WFQFN Exposed Pad |
Key Features
- Dual 10-bit, 125Msps ADC with low power consumption.
- Single 3V supply with separate output supply for driving logic levels from 0.5V to 3.6V.
- High AC performance: 61.6dB SNR and 82dB SFDR for signals at the Nyquist frequency.
- Low transition noise of 0.08LSBRMS.
- 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.
- Differential analog input with offset matching and low offset error.
- Internal reference with low drift and line regulation.
Applications
- Demanding imaging applications.
- Communications applications requiring high frequency and wide dynamic range signal digitization.
- Other high-performance data acquisition systems.
Q & A
- What is the resolution and sampling rate of the LTC2281IUP?
The LTC2281IUP has a resolution of 10 bits and a sampling rate of 125 Msps.
- What is the supply voltage range for the LTC2281IUP?
The supply voltage range is from 2.85V to 3.4V.
- What are the key AC performance metrics of the LTC2281IUP?
The key AC performance metrics include a signal-to-noise ratio (SNR) of 61.6 dB and a spurious free dynamic range (SFDR) of 82 dB for signals at the Nyquist frequency.
- What is the transition noise of the LTC2281IUP?
The transition noise is 0.08 LSBRMS.
- Does the LTC2281IUP have an internal reference?
Yes, the LTC2281IUP has an internal reference with low drift and line regulation.
- What is the package type of the LTC2281IUP?
The package type is 64-WFQFN Exposed Pad.
- Can the LTC2281IUP drive different logic levels?
Yes, the LTC2281IUP can drive logic levels from 0.5V to 3.6V using a separate output supply.
- What are some typical applications of the LTC2281IUP?
Typical applications include demanding imaging and communications applications, as well as other high-performance data acquisition systems.
- Does the LTC2281IUP have an optional clock duty cycle stabilizer?
Yes, the LTC2281IUP has an optional clock duty cycle stabilizer for high performance across a wide range of clock duty cycles.
- How does the LTC2281IUP handle data output?
The LTC2281IUP features a data ready output clock (CLKOUT) that can be used to latch the output data.
