Overview
The LTC2170IUKG-14#PBF is a 14-bit, low-power, quad analog-to-digital converter (ADC) produced by Analog Devices Inc. This device is designed for digitizing high-frequency, wide dynamic range signals and is particularly suited for demanding communications applications. It features simultaneous sampling of four channels, making it ideal for applications requiring high accuracy and low noise performance.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 14 bits (no missing codes) |
| Sampling Rate | 25 Msps |
| Signal-to-Noise Ratio (SNR) | 73.7 dB |
| Spurious Free Dynamic Range (SFDR) | 90 dB |
| Integral Linearity Error (INL) | ±1 LSB (typ) |
| Differential Linearity Error (DNL) | ±0.3 LSB (typ) |
| Offset Error | ±3 mV (typ) |
| Gain Error | ±1% FS (typ) |
| Analog Supply Voltage (VDD) | 1.7 to 1.9 V |
| Output Supply Voltage (OVDD) | 1.7 to 1.9 V |
| Analog Supply Current | 157 to 181 mA (sine wave input) |
| Digital Supply Current | 16 to 52 mA (depending on mode) |
| Power Dissipation | 311 mW (total), 78 mW per channel |
| Package | 52-Lead QFN (7mm x 8mm x 0.75mm) |
Key Features
- 4-channel simultaneous sampling ADC
- Low power consumption: 311 mW total, 78 mW 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
- 800 MHz full power bandwidth sample-and-hold
- Shutdown and nap modes for power saving
- Serial SPI port for configuration
- Pin-compatible 14-bit and 12-bit versions
- Internal clock duty cycle stabilizer for high performance
Applications
- Communications
- Cellular base stations
- Software defined radios
- Portable medical imaging
- Multichannel data acquisition
- Nondestructive testing
Q & A
- What is the resolution of the LTC2170IUKG-14#PBF? The resolution is 14 bits with no missing codes.
- What is the sampling rate of this ADC? The sampling rate is 25 Msps.
- What is the signal-to-noise ratio (SNR) of this device? The SNR is 73.7 dB.
- What is the spurious free dynamic range (SFDR) of this ADC? The SFDR is 90 dB.
- What are the power supply requirements for this device? The device operates with a single 1.8V supply for both analog and digital sections.
- How many channels does this ADC have? This ADC has four simultaneous sampling channels.
- What are the output formats of the digital data? The digital outputs are serial LVDS, with options for one or two bits per channel.
- What are the typical applications for this ADC? Typical applications include communications, cellular base stations, software defined radios, portable medical imaging, multichannel data acquisition, and nondestructive testing.
- Does this device have power-saving modes? Yes, it has shutdown and nap modes for power saving.
- How is the device configured? The device can be configured via a serial SPI port.
