Overview
The LTC2175IUKG-12 is a 4-channel, simultaneous sampling 12-bit analog-to-digital converter (ADC) designed by Analog Devices Inc. This device is optimized for digitizing high frequency, wide dynamic range signals, making it ideal for demanding communications applications. It features low power consumption, high signal-to-noise ratio (SNR), and spurious free dynamic range (SFDR), along with ultralow jitter, which allows for excellent noise performance even when undersampling IF frequencies.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Channels | 4 |
| Resolution | 12 bits |
| Sampling Rate | 125 Msps |
| Signal-to-Noise Ratio (SNR) | 70.6 dB |
| Spurious Free Dynamic Range (SFDR) | 88 dB |
| Power Consumption | 545 mW (total), 136 mW (per channel) |
| Supply Voltage | 1.8 V (single supply) |
| Input Range | 1 Vpp to 2 Vpp |
| Full Power Bandwidth S/H | 800 MHz |
| Output Interface | Serial LVDS (1 or 2 bits per channel) |
| Package | 52-pin QFN (7mm x 8mm x 0.75mm) |
| Operating Temperature | -40°C to 85°C |
Key Features
- 4-channel simultaneous sampling ADC
- Low power consumption: 545mW total, 136mW per channel
- Single 1.8V supply
- Serial LVDS outputs: 1 or 2 bits per channel
- Selectable input ranges: 1Vpp to 2Vpp
- 800MHz full power bandwidth S/H
- Shutdown and nap modes for power management
- Serial SPI port for configuration
- Pin compatible with 14-bit and 12-bit versions
- Ultralow jitter of 0.15ps RMS
- Internal clock duty cycle stabilizer for high performance across various clock duty cycles
Applications
The LTC2175IUKG-12 is particularly suited for demanding communications applications, including:
- High frequency signal processing
- Wide dynamic range signal digitization
- IF (Intermediate Frequency) undersampling with excellent noise performance
- Wireless communication systems
- Radar and surveillance systems
- High-speed data acquisition systems
Q & A
- What is the resolution of the LTC2175IUKG-12 ADC?
The LTC2175IUKG-12 has a resolution of 12 bits.
- What is the sampling rate of the LTC2175IUKG-12?
The sampling rate is 125 Msps (mega-samples per second).
- What is the signal-to-noise ratio (SNR) of the LTC2175IUKG-12?
The SNR is 70.6 dB.
- What is the spurious free dynamic range (SFDR) of the LTC2175IUKG-12?
The SFDR is 88 dB.
- What is the power consumption of the LTC2175IUKG-12?
The total power consumption is 545 mW, with 136 mW per channel.
- What is the supply voltage for the LTC2175IUKG-12?
The device operates on a single 1.8V supply.
- What are the input ranges for the LTC2175IUKG-12?
The input ranges are selectable from 1 Vpp to 2 Vpp.
- What is the full power bandwidth of the sample and hold (S/H) for the LTC2175IUKG-12?
The full power bandwidth S/H is 800 MHz.
- What type of output interface does the LTC2175IUKG-12 use?
The output interface is serial LVDS, with options for 1 or 2 bits per channel.
- What is the package type and size of the LTC2175IUKG-12?
The device is packaged in a 52-pin QFN (7mm x 8mm x 0.75mm).
