Overview
The LTC2389IUK-18#PBF is a high-performance, 18-bit successive approximation register (SAR) analog-to-digital converter (ADC) produced by Analog Devices Inc. This device is renowned for its low noise and high speed, making it suitable for a wide range of high-speed applications. It operates from a single 5V supply and supports multiple analog input ranges, including fully differential (±4.096V), pseudo-differential unipolar (0V to 4.096V), and pseudo-differential bipolar (±2.048V), eliminating the need for additional level translation or signal conditioning.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 18 bits |
| Sampling Rate | 2.5 Msps |
| Analog Input Range | Fully differential (±4.096V), pseudo-differential unipolar (0V to 4.096V), pseudo-differential bipolar (±2.048V) |
| Signal-to-Noise Ratio (SNR) | 99.8 dB (fully differential), 95.2 dB (pseudo differential) |
| Integral Nonlinearity (INL) | ±3 LSB (maximum) |
| Internal Reference | 4.096V with 0.5% initial accuracy and ±20 ppm/°C temperature coefficient |
| Power Supply | Single 5V supply |
| Power Consumption | 162.5 mW at 2.5 Msps |
| Package Options | 48-Lead QFN (7mm x 7mm x 0.75mm w/ EP), 48-Lead LQFP (7mm x 7mm) |
Key Features
- High-speed conversion with 2.5 Msps throughput and no cycle latency in parallel interface modes.
- Low noise performance with high SNR (99.8 dB fully differential, 95.2 dB pseudo differential).
- Pin-configurable analog input ranges to support various signal chain formats.
- Internal precision reference with high accuracy and low temperature coefficient.
- Low power consumption with nap and sleep power-down modes.
- Internal oscillator for setting conversion time, simplifying external timing considerations.
Applications
The LTC2389IUK-18#PBF is ideally suited for a variety of high-speed applications, including but not limited to:
- 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 LTC2389IUK-18#PBF ADC?
The LTC2389IUK-18#PBF has an 18-bit resolution.
- What are the supported analog input ranges for this ADC?
The device supports fully differential (±4.096V), pseudo-differential unipolar (0V to 4.096V), and pseudo-differential bipolar (±2.048V) analog input ranges.
- What is the sampling rate of the LTC2389IUK-18#PBF?
The sampling rate is 2.5 Msps.
- What is the signal-to-noise ratio (SNR) of this ADC?
The SNR is 99.8 dB for fully differential inputs and 95.2 dB for pseudo-differential inputs.
- Does the LTC2389IUK-18#PBF have an internal reference?
Yes, it includes a precision internal 4.096V reference with 0.5% initial accuracy and a ±20 ppm/°C temperature coefficient.
- What are the power consumption and power-down modes of the LTC2389IUK-18#PBF?
The device consumes 162.5 mW at 2.5 Msps and features nap and sleep power-down modes to reduce power consumption during inactive periods.
- What package options are available for the LTC2389IUK-18#PBF?
The device is available in 48-Lead QFN (7mm x 7mm x 0.75mm w/ EP) and 48-Lead LQFP (7mm x 7mm) packages.
- Does the LTC2389IUK-18#PBF have any cycle latency in parallel interface modes?
No, it does not have cycle latency in parallel interface modes.
- What is the purpose of the internal oscillator in the LTC2389IUK-18#PBF?
The internal oscillator sets the conversion time, easing external timing considerations.
- What are some typical applications for the LTC2389IUK-18#PBF?
Typical applications include high-speed data acquisition systems, medical imaging, aerospace and defense systems, industrial automation, and test and measurement equipment.
