Overview
The LTC2321CUFD-16 is a high-performance, low noise, high speed dual 16-bit successive approximation register (SAR) analog-to-digital converter (ADC) produced by Analog Devices Inc. This ADC features 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 has an 8Vp-p differential input range. The LTC2321-16 achieves ±4LSB INL typical, no missing codes at 16 bits, and an 81dB signal-to-noise ratio (SNR) at 500kHz input frequency. It also includes an onboard low drift (20ppm/°C max) 2.048V or 4.096V temperature-compensated reference and a high-speed SPI-compatible serial interface supporting CMOS or LVDS logic.
Key Specifications
| Parameter | Value |
|---|---|
| Converter Type | General Purpose |
| Architecture | SAR |
| Resolution | 16-bit |
| Number of ADCs | 2 |
| Number of Input Channels | 2 |
| Sampling Rate | 2Msps |
| Digital Interface Type | Serial (SPI), CMOS or LVDS |
| Input Type | Voltage, Differential or Pseudo-Differential |
| Voltage Reference | Internal (2.048V or 4.096V), External |
| Voltage Supply Source | Single 3.3V or 5V |
| Input Voltage Range | 8Vp-p Differential |
| Maximum Power Dissipation | 31mW per channel (active), 5μW (nap/sleep mode) |
| Operating Temperature Range | Guaranteed operation to 125°C |
| Package | 28-Lead QFN (4mm x 5mm x 0.75mm w/ EP) |
Key Features
- Low noise and high speed operation
- Differential inputs with wide input common mode range
- No missing codes, guaranteed accuracy
- Fast throughput rate with no cycle latency (2Msps per channel)
- Low distortion and high SNR performance (81dB SNR at 500kHz input frequency)
- Onboard low drift (20ppm/°C max) 2.048V or 4.096V temperature-compensated reference
- High-speed SPI-compatible serial interface supporting CMOS or LVDS logic
- Low power consumption (31mW per channel active, 5μW in nap/sleep mode)
- Safe from electromagnetic interference
Applications
- Satellite communication
- Instrumentation
- Digital signage
- High-speed data acquisition systems
- Industrial control and automation
- Medical devices requiring high precision and low noise
Q & A
- Q: What is the resolution and sampling rate of the LTC2321CUFD-16?
A: The LTC2321CUFD-16 has a resolution of 16 bits and a sampling rate of 2Msps per channel.
- Q: What type of input does the LTC2321CUFD-16 support?
A: The LTC2321CUFD-16 supports differential or pseudo-differential voltage inputs.
- Q: What is the power consumption of the LTC2321CUFD-16?
A: The LTC2321CUFD-16 dissipates 31mW per channel in active mode and reduces to 5μW in nap/sleep mode.
- Q: Does the LTC2321CUFD-16 have an internal voltage reference?
A: Yes, the LTC2321CUFD-16 has an onboard low drift (20ppm/°C max) 2.048V or 4.096V temperature-compensated reference.
- Q: What is the operating temperature range of the LTC2321CUFD-16?
A: The LTC2321CUFD-16 is guaranteed to operate up to 125°C.
- Q: What type of digital interface does the LTC2321CUFD-16 support?
A: The LTC2321CUFD-16 supports a high-speed SPI-compatible serial interface with CMOS or LVDS logic.
- Q: What is the package type of the LTC2321CUFD-16?
A: The LTC2321CUFD-16 is available in a 28-Lead QFN (4mm x 5mm x 0.75mm w/ EP) package.
- Q: Is the LTC2321CUFD-16 resistant to electromagnetic interference?
A: Yes, the LTC2321CUFD-16 is designed to be safe from electromagnetic interference.
- Q: What are some typical applications of the LTC2321CUFD-16?
A: Typical applications include satellite communication, instrumentation, digital signage, high-speed data acquisition systems, industrial control, and medical devices.
- Q: Where can I find detailed information and datasheets for the LTC2321CUFD-16?
A: Detailed information and datasheets can be found on the Analog Devices website, as well as through authorized distributors like Ovaga and HKin.com.
