Overview
The LTC2191IUKG is a high-performance, 16-bit, dual-channel analog-to-digital converter (ADC) designed by Analog Devices Inc. This component is part of the LTC2192/LTC2191/LTC2190 family and is optimized for digitizing high-frequency, wide dynamic range signals. It features simultaneous sampling capabilities, making it ideal for demanding applications such as communications, medical imaging, and multi-channel data acquisition.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| VDD (Analog Supply Voltage) | 1.7 | 1.8 | 1.9 | V | |
| OVDD (Output Supply Voltage) | 1.7 | 1.8 | 1.9 | V | |
| fS (Sampling Frequency) | 5 | 40 | MHz | ||
| SNR (Signal-to-Noise Ratio) | fIN = 5MHz, –1dBFS | 77 | dB | ||
| SFDR (Spurious Free Dynamic Range) | fIN = 70MHz, 40Msps, 2V Range | 90 | dB | ||
| INL (Integral Nonlinearity) | ±2LSB | ||||
| DNL (Differential Nonlinearity) | ±0.5LSB | ||||
| Operating Temperature | -40°C | 85°C | °C | ||
| Package | 52-WFQFN Exposed Pad |
Key Features
- Simultaneous sampling of two channels
- 16-bit resolution with no missing codes over temperature
- High sampling rates: up to 40Msps
- Low power consumption: analog supply current of approximately 80mA and digital supply current depending on the output mode
- High AC performance: 77dB SNR and 90dB SFDR
- Ultralow jitter: 0.07psRMS, enabling undersampling of IF frequencies with excellent noise performance
- Digital outputs with on-chip termination resistance
- Operating temperature range: -40°C to 85°C
Applications
- Communications: cellular base stations, software-defined radios
- Portable medical imaging
- Multi-channel data acquisition
- Nondestructive testing
Q & A
- What is the resolution of the LTC2191IUKG ADC?
The LTC2191IUKG has a 16-bit resolution.
- What are the sampling frequencies available for the LTC2191IUKG?
The LTC2191IUKG can sample at rates up to 40Msps.
- What is the signal-to-noise ratio (SNR) of the LTC2191IUKG?
The SNR of the LTC2191IUKG is typically 77dB at fIN = 5MHz, –1dBFS.
- What is the spurious free dynamic range (SFDR) of the LTC2191IUKG?
The SFDR of the LTC2191IUKG is typically 90dB at fIN = 70MHz, 40Msps, 2V Range.
- What is the operating temperature range of the LTC2191IUKG?
The operating temperature range is -40°C to 85°C.
- What is the package type of the LTC2191IUKG?
The LTC2191IUKG comes in a 52-WFQFN Exposed Pad package.
- What are some typical applications of the LTC2191IUKG?
Typical applications include communications, portable medical imaging, multi-channel data acquisition, and nondestructive testing.
- How does the LTC2191IUKG handle simultaneous sampling?
The LTC2191IUKG is designed for simultaneous sampling of two channels, ensuring synchronized data acquisition.
- What is the jitter performance of the LTC2191IUKG?
The LTC2191IUKG has an ultralow jitter of 0.07psRMS, which is beneficial for undersampling IF frequencies.
- How does the LTC2191IUKG manage digital output termination?
The LTC2191IUKG features on-chip termination resistance to minimize the number of data lines.
