Overview
The LTC2312-14, produced by Analog Devices Inc., is a 14-bit, 500ksps serial sampling Analog-to-Digital Converter (ADC) designed for high-speed, low-power applications. This Successive Approximation Register (SAR) ADC operates from a single 3V or 5V supply, drawing only 3.2mA, making it ideal for compact and power-efficient systems. The device features an integrated low drift reference and reference buffer, providing high performance and a space-saving solution. It achieves outstanding AC performance with 77dB SINAD and –85dB THD while sampling at 500ksps, and it supports a high-speed SPI-compatible serial interface with no-cycle latency.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 14 bits |
| Sampling Rate | 500 ksps |
| Supply Voltage | Single 3V or 5V |
| Supply Current | 3.2 mA (typical at 3V or 5V) |
| Power Consumption | 9 mW at 3V, 15 mW at 5V |
| Internal Reference | 2.048V or 4.096V with 20 ppm/°C maximum drift |
| Dynamic Performance | 77 dB SINAD, –85 dB THD |
| Digital Interface | High-speed SPI-compatible, 1.8V to 5V logic |
| Package | 8-Lead TSOT-23 |
| Operating Modes | Nap mode and sleep mode with < 1 µA typical supply current |
Key Features
- High-speed sampling at 500 ksps with no-cycle latency
- Low power consumption: 9 mW at 3V and 15 mW at 5V
- Integrated low drift reference and reference buffer (20 ppm/°C maximum)
- Excellent dynamic performance: 77 dB SINAD, –85 dB THD
- Single 3V or 5V supply operation
- High-speed SPI-compatible serial interface supporting 1.8V to 5V logic
- Nap mode and sleep mode for power saving
- Guaranteed 14-bit no missing codes
- Separate 1.8V to 5V digital I/O supply
Applications
- High-speed data acquisition systems
- Compact and low-power systems
- Automotive and industrial applications requiring high accuracy and speed
- Medical devices and diagnostic equipment
- Aerospace and defense systems
- Test and measurement instruments
Q & A
- What is the resolution of the LTC2312-14 ADC?
The LTC2312-14 has a resolution of 14 bits.
- What is the sampling rate of the LTC2312-14?
The sampling rate of the LTC2312-14 is 500 ksps.
- What are the supply voltage options for the LTC2312-14?
The LTC2312-14 operates from a single 3V or 5V supply.
- How much power does the LTC2312-14 consume?
The LTC2312-14 consumes 9 mW at 3V and 15 mW at 5V.
- What is the dynamic performance of the LTC2312-14?
The LTC2312-14 achieves 77 dB SINAD and –85 dB THD.
- Does the LTC2312-14 have an internal reference?
Yes, the LTC2312-14 has an integrated low drift reference and reference buffer.
- What is the package type of the LTC2312-14?
The LTC2312-14 is packaged in an 8-Lead TSOT-23.
- Does the LTC2312-14 support low power modes?
Yes, the LTC2312-14 supports nap mode and sleep mode with < 1 µA typical supply current.
- What type of digital interface does the LTC2312-14 use?
The LTC2312-14 uses a high-speed SPI-compatible serial interface supporting 1.8V to 5V logic.
- What are some typical applications of the LTC2312-14?
The LTC2312-14 is suitable for high-speed data acquisition systems, compact and low-power systems, automotive, industrial, medical, aerospace, and test and measurement applications.
