Overview
The LTC2312ITS8-12, produced by Analog Devices Inc., is a 12-bit, 500ksps serial sampling Analog-to-Digital Converter (ADC) designed for high-speed, low-power applications. This ADC features an integrated low drift reference and reference buffer, providing a high-performance and space-saving solution. It operates from a single 3V or 5V supply, drawing only 3mA, and achieves outstanding AC performance with 72.7dB SINAD and –84dB THD at 500ksps. The device is ideal for compact, low-power systems due to its high sample rate-to-power ratio and automatic nap mode after conversions to save power.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Bits | 12 |
| Sampling Rate | 500ksps |
| Supply Voltage | 2.7V to 3.6V, 5V |
| Supply Current | 3mA (typical at 3V or 5V) |
| Reference Type | Internal |
| Reference Voltage | 2.048V or 4.096V |
| Operating Temperature | -40°C to 85°C |
| Package | SOT-23-8 Thin, TSOT-23-8 |
| Data Interface | SPI-compatible serial interface |
| Input Type | Single Ended |
| Architecture | SAR (Successive Approximation Register) |
Key Features
- High-speed SPI-compatible serial interface supporting 1.8V, 2.5V, 3V, and 5V logic.
- Fast 500ksps throughput with no-cycle latency.
- Integrated low drift reference and reference buffer (20ppm/°C maximum).
- Low power consumption: 8mW at 500ksps and 3V supply.
- Low noise: 73dB SNR, 72.7dB SINAD, and –84dB THD.
- Automatic nap mode and sleep mode with < 1µA typical supply current.
- Separate 1.8V to 5V digital I/O supply.
- Guaranteed operation from –40°C to 85°C.
Applications
- Communication Systems
- High Speed Data Acquisition
- Handheld Terminal Interface
- Medical Imaging
- Uninterrupted Power Supplies
- Battery Operated Systems
- Automotive Systems
Q & A
- What is the sampling rate of the LTC2312ITS8-12?
The LTC2312ITS8-12 has a sampling rate of 500ksps.
- What is the power consumption of the LTC2312ITS8-12 at 500ksps and 3V supply?
The power consumption is approximately 8mW at 500ksps and 3V supply.
- What type of reference does the LTC2312ITS8-12 use?
The LTC2312ITS8-12 uses an internal reference with options for 2.048V or 4.096V.
- What is the operating temperature range of the LTC2312ITS8-12?
The operating temperature range is from –40°C to 85°C.
- What type of data interface does the LTC2312ITS8-12 support?
The LTC2312ITS8-12 supports a high-speed SPI-compatible serial interface.
- Does the LTC2312ITS8-12 have power-saving modes?
- What is the package type of the LTC2312ITS8-12?
The package type is SOT-23-8 Thin, TSOT-23-8.
- What are the typical applications of the LTC2312ITS8-12?
Typical applications include communication systems, high-speed data acquisition, handheld terminal interfaces, medical imaging, uninterrupted power supplies, battery-operated systems, and automotive systems.
- How does the LTC2312ITS8-12 manage power consumption during inactive periods?
The device automatically switches to nap mode after conversions and can be put into sleep mode through serial interface control to reduce power dissipation during long inactive periods.
- What is the dynamic performance of the LTC2312ITS8-12?
The LTC2312ITS8-12 achieves outstanding AC performance with 72.7dB SINAD and –84dB THD while sampling at 500ksps.
