Overview
The LTC2321-14, produced by Analog Devices Inc., is a high-performance, low noise, dual 14-bit + sign successive approximation register (SAR) analog-to-digital converter (ADC). This device is designed with differential inputs and a wide input common mode range, making it ideal for applications requiring a wide dynamic range and high common mode rejection. It operates from a single 3.3V or 5V supply and features an 8V peak-to-peak differential input range. The LTC2321-14 is known for its high speed and low power consumption, making it suitable for a variety of high-speed applications.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Resolution | 14 Bits + Sign | |
| Sampling Rate | 2 Msps per channel | |
| Differential Input Range | 8 V peak-to-peak | |
| Supply Voltage | 3.3V or 5V | V |
| Integral Linearity Error (INL) | ±1 LSB typical | LSB |
| Differential Linearity Error (DNL) | ±0.4 LSB typical | LSB |
| Signal-to-Noise Ratio (SNR) | 80 dB | dB |
| Power Consumption (active) | 33 mW per channel | mW |
| Power Consumption (nap/sleep mode) | 5 μW | μW |
| Internal Reference Output Voltage | 2.048V or 4.096V | V |
| Internal Reference Temperature Coefficient | 20 ppm/°C max | ppm/°C |
| Package | 28-lead QFN |
Key Features
- High speed SPI-compatible serial interface supporting CMOS or LVDS logic.
- Fast 2 Msps per channel throughput with no-cycle latency.
- Low drift (20 ppm/°C max) 2.048V or 4.096V temperature-compensated reference.
- Low power consumption with nap and sleep modes to reduce power to 5 μW.
- Wide input common mode range and high common mode rejection.
- No missing codes at 14 bits and ±1 LSB INL typical.
- High signal-to-noise ratio (SNR) of 80 dB.
Applications
The LTC2321-14 is ideally suited for a wide variety of high-speed applications, including:
- High-speed data acquisition systems.
- Medical imaging and diagnostics.
- Aerospace and defense systems.
- Industrial automation and control systems.
- Test and measurement equipment.
Q & A
- What is the resolution of the LTC2321-14 ADC?
The LTC2321-14 has a resolution of 14 bits + sign.
- What is the sampling rate of the LTC2321-14?
The sampling rate is 2 Msps per channel.
- What is the differential input range of the LTC2321-14?
The differential input range is 8 V peak-to-peak.
- What are the supply voltage options for the LTC2321-14?
The device operates from a single 3.3V or 5V supply.
- What is the typical integral linearity error (INL) of the LTC2321-14?
The typical INL is ±1 LSB.
- What is the signal-to-noise ratio (SNR) of the LTC2321-14?
The SNR is 80 dB.
- How much power does the LTC2321-14 consume in active mode?
The power consumption is 33 mW per channel in active mode.
- What are the power-saving modes available in the LTC2321-14?
The device offers nap and sleep modes to reduce power consumption to 5 μW.
- What is the internal reference output voltage of the LTC2321-14?
The internal reference output voltage is 2.048V or 4.096V.
- What is the package type of the LTC2321-14?
The device is packaged in a 28-lead QFN.
