Overview
The LTC2315-12, produced by Analog Devices Inc., is a 12-bit, 5Msps (mega-samples per second) serial sampling Analog-to-Digital Converter (ADC). This device is designed for high-speed, low-power applications and features an integrated bandgap and reference buffer, providing a high-performance and space-saving solution. It operates from a wide analog supply range of 2.7V to 5.25V and draws only 6.4mA at 5Msps with a 5V supply. The LTC2315-12 achieves excellent AC performance with a SINAD (Signal-to-Noise and Distortion Ratio) of 72.6dB and a THD (Total Harmonic Distortion) of –84dB when sampling a 500kHz input frequency.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 12-bit |
| Sample Rate | 5Msps |
| Analog Supply Voltage | 2.7V to 5.25V |
| Current Consumption | 6.4mA at 5Msps and 5V |
| SINAD | 72.6dB |
| THD | –84dB |
| SNR | 73dB |
| Internal Reference | 2.048V/4.096V Span |
| Digital I/O Supply | 1.8V to 5V |
| Operating Temperature Range | –40°C to 125°C (H-grade) |
| Package | 8-Lead TSOT-23 |
Key Features
- High-speed SPI-compatible serial interface supporting 1.8V, 2.5V, 3V, and 5V logic.
- Guaranteed 12-bit no missing codes.
- Internal reference with 2.048V/4.096V span.
- Low noise: 73dB SNR.
- Low power consumption: 6.4mA at 5Msps and 5V.
- Dual supply range: 3V/5V operation.
- Sleep mode with < 1µA typical supply current and nap mode with quick wake-up.
- Separate 1.8V to 5V digital I/O supply.
- High-speed data throughput with 87.5MHz data clock support.
Applications
- Communication Systems
- High Speed Data Acquisition
- Handheld Terminal Interfaces
- Medical Imaging
- Uninterrupted Power Supplies
- Battery Operated Systems
- Automotive Systems
Q & A
- What is the resolution and sample rate of the LTC2315-12?
The LTC2315-12 is a 12-bit ADC with a sample rate of 5Msps.
- What is the operating voltage range for the LTC2315-12?
The LTC2315-12 operates from an analog supply voltage range of 2.7V to 5.25V.
- How much current does the LTC2315-12 consume at 5Msps and 5V supply?
The LTC2315-12 consumes 6.4mA at 5Msps and 5V supply.
- What are the SINAD and THD specifications of the LTC2315-12?
The LTC2315-12 achieves a SINAD of 72.6dB and a THD of –84dB when sampling a 500kHz input frequency.
- Does the LTC2315-12 have power-down modes?
Yes, the LTC2315-12 provides both sleep and nap modes for power optimization.
- What is the temperature range for the LTC2315-12?
The operating temperature range for the LTC2315-12 is –40°C to 125°C (H-grade).
- What type of package is the LTC2315-12 available in?
The LTC2315-12 is available in an 8-Lead TSOT-23 package.
- What is the internal reference voltage span of the LTC2315-12?
The internal reference voltage span is 2.048V/4.096V.
- Does the LTC2315-12 support multiple digital I/O voltage levels?
Yes, the LTC2315-12 supports digital I/O supply voltages from 1.8V to 5V.
- What are some typical applications of the LTC2315-12?
Typical applications include communication systems, high-speed data acquisition, handheld terminal interfaces, medical imaging, uninterrupted power supplies, battery-operated systems, and automotive systems.
