Overview
The LTC2269, produced by Analog Devices Inc., is a high-performance 16-bit analog-to-digital converter (ADC) designed for digitizing high-frequency, wide dynamic range signals. This sampling ADC is particularly suited for demanding communications applications, offering exceptional AC performance with a signal-to-noise ratio (SNR) of 84.1 dB and a spurious free dynamic range (SFDR) of 99 dB. The device features low power consumption, various output modes, and a robust set of specifications that make it ideal for a variety of applications.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Resolution | 16-bit | |
| Sampling Rate | 20 Msps | |
| SNR | 84.1 dB | |
| SFDR | 99 dB | |
| Integral Nonlinearity (INL) | ±1 LSB (typ) | |
| Differential Nonlinearity (DNL) | ±0.2 LSB (typ) | |
| Analog Supply Voltage | 1.7 V to 1.9 V | V |
| Digital Supply Voltage | 1.7 V to 1.9 V | V |
| Operating Temperature Range | 0°C to 70°C (LTC2269C), -40°C to 85°C (LTC2269I) | °C |
| Package | 48-Lead (7mm × 7mm) Plastic QFN |
Key Features
- High AC performance with 84.1 dB SNR and 99 dB SFDR
- Low power consumption: 88 mW typical
- Single 1.8 V supply with separate output power supply
- CMOS, double data rate CMOS, or double data rate LVDS outputs
- Selectable input ranges: 1 V P-P to 2.1 V P-P
- 200 MHz full power bandwidth sample-and-hold
- Shutdown and nap modes for power management
- Serial SPI port for configuration
- Pin compatible with LTC2160
Applications
- Low power instrumentation
- Software defined radios
- Portable medical imaging
- Multichannel data acquisition
Q & A
- What is the resolution of the LTC2269 ADC?
The LTC2269 is a 16-bit analog-to-digital converter.
- What is the sampling rate of the LTC2269?
The sampling rate of the LTC2269 is 20 Msps.
- What are the typical SNR and SFDR values for the LTC2269?
The typical SNR is 84.1 dB, and the typical SFDR is 99 dB.
- What are the operating temperature ranges for the LTC2269?
The operating temperature ranges are 0°C to 70°C for the LTC2269C and -40°C to 85°C for the LTC2269I.
- What types of output modes does the LTC2269 support?
The LTC2269 supports full rate CMOS, double data rate CMOS, and double data rate LVDS outputs.
- What is the power consumption of the LTC2269?
The typical power consumption is 88 mW.
- Does the LTC2269 have power management features?
Yes, it includes shutdown and nap modes for power management.
- How is the LTC2269 configured?
The LTC2269 can be configured via a serial SPI port.
- What package type is the LTC2269 available in?
The LTC2269 is available in a 48-Lead (7mm × 7mm) Plastic QFN package.
- What are some common applications of the LTC2269?
Common applications include low power instrumentation, software defined radios, portable medical imaging, and multichannel data acquisition.
