Overview
The LTC2270CUP, produced by Analog Devices Inc., is a two-channel simultaneous sampling 16-bit analog-to-digital converter (ADC) designed for digitizing high-frequency, wide dynamic range signals. This device is ideal for demanding applications that require high AC performance, including low power instrumentation, software-defined radios, portable medical imaging, and multi-channel data acquisition.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Resolution | 16 | Bits |
| Sampling Rate | 20 | Msps |
| Signal-to-Noise Ratio (SNR) | 84.1 | dB |
| Spurious Free Dynamic Range (SFDR) | 99 | dB |
| Integral Linearity Error (INL) | ±2.3 | LSB (Max) |
| Differential Linearity Error (DNL) | ±0.2 | LSB (Typ) |
| Power Consumption | 160 | mW (Total), 80mW (Per Channel) |
| Supply Voltage | 1.7V to 1.9V | V |
| Input Range | 1V to 2.1V | P-P |
| Full Power Bandwidth S/H | 200 | MHz |
| Output Types | CMOS, DDR CMOS, DDR LVDS | |
| Package Type | 64-Lead QFN (9mm x 9mm x 0.75mm w/ EP) | |
| Operating Temperature | 0°C to 70°C | °C |
Key Features
- Two-channel simultaneous sampling ADC
- Low power consumption: 160mW total, 80mW per channel
- Single 1.8V supply
- CMOS, DDR CMOS, or DDR LVDS outputs
- Selectable input ranges: 1V to 2.1V P-P
- 200MHz full power bandwidth S/H
- Shutdown and nap modes for power management
- Serial SPI port for configuration
- Pin compatible with LTC2180 and LTC2140-14
- Optional clock duty cycle stabilizer for high performance across various clock duty cycles
Applications
- Low power instrumentation
- Software-defined radios
- Portable medical imaging
- Multi-channel data acquisition
Q & A
- What is the resolution and sampling rate of the LTC2270CUP?
The LTC2270CUP has a resolution of 16 bits and a sampling rate of 20 Msps.
- What is the signal-to-noise ratio (SNR) and spurious free dynamic range (SFDR) of the LTC2270CUP?
The SNR is 84.1 dB, and the SFDR is 99 dB.
- What are the power consumption and supply voltage requirements of the LTC2270CUP?
The total power consumption is 160 mW, with 80 mW per channel, and it operates on a single 1.8V supply (1.7V to 1.9V).
- What types of digital outputs does the LTC2270CUP support?
The device supports CMOS, DDR CMOS, and DDR LVDS outputs.
- What is the input range and full power bandwidth of the sample and hold (S/H) stage?
The input range is 1V to 2.1V P-P, and the full power bandwidth of the S/H stage is 200 MHz.
- Does the LTC2270CUP have power management features?
Yes, it includes shutdown and nap modes for power management.
- How is the LTC2270CUP configured?
It is configured via a serial SPI port.
- What package type is the LTC2270CUP available in?
The device is available in a 64-Lead QFN (9mm x 9mm x 0.75mm w/ EP) package.
- What is the operating temperature range of the LTC2270CUP?
The operating temperature range is from 0°C to 70°C.
- Is the LTC2270CUP pin compatible with other models?
Yes, it is pin compatible with the LTC2180 and LTC2140-14.
