Overview
The LTC2172IUKG-12, produced by Analog Devices Inc., is a 4-channel, simultaneous sampling 12-bit analog-to-digital converter (ADC). This device is designed to digitize high frequency, wide dynamic range signals, making it ideal for demanding communications applications. It features excellent AC performance, including a signal-to-noise ratio (SNR) of 71dB and a spurious free dynamic range (SFDR) of 90dB. The ADC also boasts an ultralow jitter of 0.15ps RMS, enabling the undersampling of IF frequencies with excellent noise performance.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Number of Bits | 12 | |
| Number of Channels | 4 | |
| Sampling Rate | 65 Msps | |
| Signal-to-Noise Ratio (SNR) | 71 dB | |
| Spurious Free Dynamic Range (SFDR) | 90 dB | |
| Jitter | 0.15 ps RMS | |
| Analog Supply Voltage | 1.7 V to 1.9 V | V |
| Digital Supply Voltage | 1.7 V to 1.9 V | V |
| Total Power Consumption | 306 mW / 198 mW / 160 mW | mW |
| Power Consumption per Channel | 77 mW / 50 mW / 40 mW | mW |
| Input Range | 1 V P-P to 2 V P-P | V P-P |
| Full Power Bandwidth Sample-and-Hold | 800 MHz | MHz |
| Package Type | 52-QFN (7mm × 8mm) | |
| Operating Temperature | -40°C to 85°C | °C |
Key Features
- 4-channel simultaneous sampling ADC
- Low power consumption: 306mW/198mW/160mW total, 77mW/50mW/40mW per channel
- Single 1.8V supply
- Serial LVDS outputs: one or two bits per channel
- Selectable input ranges: 1V P-P to 2V P-P
- 800MHz full power bandwidth sample-and-hold
- Shutdown and nap modes
- Serial SPI port for configuration
- Pin-compatible 14-bit and 12-bit versions
- Internal clock duty cycle stabilizer for high performance across various clock duty cycles
- Optional internal termination and adjustable output levels for LVDS drivers
Applications
The LTC2172IUKG-12 is particularly suited for demanding communications applications, including:
- High-frequency signal processing
- Wide dynamic range signal digitization
- Undersampling of IF frequencies
- Applications requiring low jitter and high SNR and SFDR
Q & A
- What is the number of bits and channels in the LTC2172IUKG-12?
The LTC2172IUKG-12 is a 12-bit, 4-channel ADC.
- What is the sampling rate of the LTC2172IUKG-12?
The sampling rate is up to 65 Msps.
- What are the key AC performance metrics of the LTC2172IUKG-12?
The device features a 71dB SNR and a 90dB SFDR.
- What is the jitter specification of the LTC2172IUKG-12?
The jitter is 0.15 ps RMS.
- What are the power consumption options for the LTC2172IUKG-12?
The total power consumption is 306 mW / 198 mW / 160 mW, with per-channel consumption of 77 mW / 50 mW / 40 mW.
- What are the input range options for the LTC2172IUKG-12?
The input range is selectable from 1 V P-P to 2 V P-P.
- What is the full power bandwidth of the sample-and-hold circuit?
The full power bandwidth is 800 MHz.
- Does the LTC2172IUKG-12 support different output modes?
Yes, it supports serial LVDS outputs with one or two bits per channel.
- What package type is the LTC2172IUKG-12 available in?
The device is packaged in a 52-QFN (7mm × 8mm) package.
- What is the operating temperature range of the LTC2172IUKG-12?
The operating temperature range is -40°C to 85°C.
