Overview
The LTC2321-16, produced by Analog Devices Inc., is a low noise, high speed dual 16-bit successive approximation register (SAR) analog-to-digital converter (ADC) with differential inputs and a wide input common mode range. This device operates from a single 3.3V or 5V supply, making it versatile for various high-speed applications. It features an 8VP-P differential input range, which is ideal for applications requiring a wide dynamic range with high common mode rejection. The LTC2321-16 is known for its high accuracy, achieving ±4LSB INL typical and no missing codes at 16 bits, along with an 81dB signal-to-noise ratio (SNR) at 500kHz input frequency.
Key Specifications
| Parameter | Specification |
|---|---|
| Number of Bits | 16 |
| Sampling Rate | 2 Msps per channel |
| Input Type | Differential, Pseudo-Differential |
| Input Range | 8VP-P differential input range |
| Supply Voltage | 3.3V or 5V |
| Power Consumption | 31mW per channel (active), 5μW (nap/sleep mode) |
| SNR | 81dB (typ) at fIN = 500kHz |
| THD | -90dB (typ) at fIN = 500kHz |
| Reference Type | Internal (2.048V or 4.096V), External |
| Data Interface | CMOS or LVDS SPI-compatible serial interface |
| Operating Temperature | Guaranteed operation to 125°C |
| Package | 28-WFQFN Exposed Pad |
Key Features
- Low noise and high speed operation with 2Msps throughput per channel and no cycle latency.
- High accuracy with ±4LSB INL typical and no missing codes at 16 bits.
- Wide input common mode range and 8VP-P differential input range.
- Onboard low drift (20ppm/°C max) 2.048V or 4.096V temperature-compensated reference.
- CMOS or LVDS SPI-compatible serial interface.
- Low power consumption with nap and sleep modes reducing power to 5μW.
- Guaranteed operation to 125°C.
Applications
- High speed data acquisition systems.
- Industrial control and automation.
- Medical imaging and diagnostics.
- Aerospace and defense applications.
- Automotive systems requiring high accuracy and speed.
Q & A
- What is the sampling rate of the LTC2321-16?
The LTC2321-16 has a sampling rate of 2 Msps per channel.
- What is the input range of the LTC2321-16?
The LTC2321-16 has an 8VP-P differential input range.
- What are the supply voltage options for the LTC2321-16?
The LTC2321-16 can operate from a single 3.3V or 5V supply.
- What is the power consumption of the LTC2321-16 in active and sleep modes?
The LTC2321-16 consumes 31mW per channel in active mode and 5μW in nap/sleep mode.
- What is the signal-to-noise ratio (SNR) of the LTC2321-16?
The LTC2321-16 achieves an 81dB SNR (typ) at 500kHz input frequency.
- Does the LTC2321-16 have an internal reference voltage?
Yes, the LTC2321-16 has an onboard low drift (20ppm/°C max) 2.048V or 4.096V temperature-compensated reference.
- What type of data interface does the LTC2321-16 support?
The LTC2321-16 supports CMOS or LVDS SPI-compatible serial interface.
- What is the operating temperature range of the LTC2321-16?
The LTC2321-16 is guaranteed to operate up to 125°C.
- What is the package type of the LTC2321-16?
The LTC2321-16 is available in a 28-WFQFN Exposed Pad package.
- Is the LTC2321-16 suitable for high-speed applications?
Yes, the LTC2321-16 is ideally suited for high-speed applications due to its fast throughput and no cycle latency.
