Overview
The LTC2312-14, produced by Analog Devices Inc., is a high-speed, high-precision 14-bit analog-to-digital converter (ADC) designed for various high-performance applications. This successive approximation register (SAR) ADC operates from a single 3V or 5V supply, making it versatile and power-efficient. It features an integrated low drift reference and reference buffer, providing a low-cost, high-performance solution with a maximum drift of 20ppm/°C. The device is known for its outstanding AC performance, achieving 77dB SINAD and –85dB THD while sampling at 500ksps, and its high sample rate-to-power ratio makes it ideal for compact, low-power systems.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 14 bits |
| Sampling Rate | 500 kSPS |
| Supply Voltage | 2.7V to 3.6V, 5V (Analog and Digital) |
| Supply Current | 3.2mA (at 3V or 5V supply) |
| Power Consumption | 9mW at 500ksps and 3V supply, 15mW at 500ksps and 5V supply |
| Reference Type | Internal (2.048V or 4.096V span) |
| Input Type | Single-ended |
| Data Interface | SPI-compatible serial interface (1.8V to 5V logic) |
| Package | TSOT-23-8 |
| Operating Temperature | 0°C to 70°C (standard), –40°C to 85°C and –40°C to 125°C (extended temperature grades) |
| Sample-and-Hold to ADC Ratio | 1:1 |
| Sleep Mode Current | < 1µA typical |
Key Features
- High-speed 500ksps sampling rate with no-cycle latency
- Guaranteed 14-bit no missing codes
- Low noise: 77.5dB SNR, –85dB THD
- Low power consumption: 9mW at 500ksps and 3V supply, 15mW at 500ksps and 5V supply
- Internal reference with low drift (20ppm/°C maximum)
- SPI-compatible serial interface supporting 1.8V to 5V logic
- Automatic nap mode and sleep mode for power saving
- Compact TSOT-23-8 package
- Compatible with a wide range of industrial, communications, and data acquisition systems
Applications
- Industrial automation and control
- Communications and networking equipment
- High-speed data acquisition systems
- Medical and instrumentation devices
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 is 500 kSPS.
- What are the supply voltage options for the LTC2312-14?
The device can operate from a single 3V or 5V supply.
- What is the power consumption of the LTC2312-14 at 500ksps?
The power consumption is 9mW at 3V supply and 15mW at 5V supply.
- Does the LTC2312-14 have an internal reference?
Yes, it has an internal reference with a 2.048V or 4.096V span.
- What type of data interface does the LTC2312-14 use?
The device uses an SPI-compatible serial interface.
- What is the package type of the LTC2312-14?
The package type is TSOT-23-8.
- What are the operating temperature ranges for the LTC2312-14?
The standard operating temperature range is 0°C to 70°C, with extended ranges of –40°C to 85°C and –40°C to 125°C available.
- Does the LTC2312-14 have power-saving modes?
Yes, it has automatic nap mode and sleep mode with < 1µA typical supply current in sleep mode.
- What are some typical applications of the LTC2312-14?
Typical applications include industrial automation, communications, high-speed data acquisition, and medical devices.
