Overview
The LTC2312-12 is a 12-bit, 500ksps serial sampling analog-to-digital converter (ADC) produced by Analog Devices Inc. This device is designed to operate from a single 3V or 5V supply, drawing a mere 3mA of current. It features an integrated low drift reference and reference buffer, providing a high-performance, low-cost, and space-saving solution. The LTC2312-12 is ideal for compact, low power, and high-speed systems due to its excellent AC performance and high sample rate-to-power ratio.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 12 bits |
| Sampling Rate | 500 ksps |
| Supply Voltage | 3V or 5V |
| Supply Current | 3 mA (at 500 ksps and 3V supply) |
| Operating Temperature Range | -40°C to 125°C |
| Package Type | 8-Lead Plastic TSOT-23 |
| Interface Type | SPI-compatible serial interface (1.8V to 5V logic) |
| Analog Input Range | 0V to VREF |
| Internal Reference | 2.048V or 4.096V with 20 ppm/°C maximum drift |
| SINAD | 72.7 dB |
| THD | -84 dB |
Key Features
- High-speed SPI-compatible serial interface supporting 1.8V, 2.5V, 3V, and 5V logic.
- Integrated low drift reference and reference buffer (20 ppm/°C maximum).
- Low power consumption: 8 mW at 500 ksps and 3V supply.
- No cycle delay, ensuring continuous sampling.
- Guaranteed no missing codes for 12-bit resolution.
- Automatic nap mode after conversions, reducing supply current at lower sampling rates.
- High AC performance with SINAD of 72.7 dB and THD of -84 dB.
- Operating temperature range of -40°C to 125°C.
Applications
- Communication systems
- High-speed data acquisition
- Handheld terminal interfaces
- Medical imaging processing
- Uninterruptible power supplies
- Battery-powered systems
- Automotive applications
Q & A
- What is the resolution of the LTC2312-12 ADC?
The LTC2312-12 has a resolution of 12 bits.
- What is the sampling rate of the LTC2312-12?
The sampling rate of the LTC2312-12 is 500 ksps.
- What are the supply voltage options for the LTC2312-12?
The LTC2312-12 can operate from a single 3V or 5V supply.
- What is the typical supply current of the LTC2312-12 at 500 ksps and 3V supply?
The typical supply current is 3 mA at 500 ksps and 3V supply.
- What is the operating temperature range of the LTC2312-12?
The operating temperature range is -40°C to 125°C.
- What type of interface does the LTC2312-12 use?
The LTC2312-12 uses an SPI-compatible serial interface.
- What is the internal reference voltage of the LTC2312-12?
The internal reference voltage is 2.048V or 4.096V with a maximum drift of 20 ppm/°C.
- What is the SINAD and THD performance of the LTC2312-12?
The SINAD is 72.7 dB and the THD is -84 dB.
- Does the LTC2312-12 have any power-saving features?
Yes, the LTC2312-12 automatically enters nap mode after conversions, reducing supply current at lower sampling rates.
- What are some common applications of the LTC2312-12?
Common applications include communication systems, high-speed data acquisition, handheld terminal interfaces, medical imaging processing, and automotive applications.
