Overview
The LTC2389-16, produced by Analog Devices Inc., is a low noise, high speed 16-bit successive approximation register (SAR) analog-to-digital converter (ADC). This device operates from a single 5V supply and is designed to support various analog input ranges, including fully differential (±4.096V), pseudo-differential unipolar (0V to 4.096V), and pseudo-differential bipolar (±2.048V) configurations. This versatility allows the LTC2389-16 to interface with multiple signal chain formats without the need for additional level translation or signal conditioning.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Resolution | 16 bits | |
| Sampling Rate | 2.5 Msps | |
| Integral Nonlinearity (INL) | ±1 LSB (max) | |
| No Missing Codes | Guaranteed at 16 bits | |
| Signal-to-Noise Ratio (SNR) | 96.0 dB (fully differential), 93.5 dB (pseudo differential) | dB |
| Internal Reference Voltage | 4.096 V | V |
| Internal Reference Accuracy | 0.5% initial accuracy | % |
| Temperature Coefficient of Internal Reference | ±20 ppm/°C (max) | ppm/°C |
| Power Consumption at 2.5 Msps | 162.5 mW | mW |
| Power-Down Modes | Nap and sleep modes | |
| Package Type | 48-Lead LQFP (7mm x 7mm) |
Key Features
- Low noise and high speed operation
- Pin-configurable analog input ranges: fully differential (±4.096V), pseudo-differential unipolar (0V to 4.096V), and pseudo-differential bipolar (±2.048V)
- Fast 2.5 Msps throughput with no cycle latency in parallel interface modes
- Internal oscillator for setting conversion time, easing external timing considerations
- Precision internal 4.096V reference with 0.5% initial accuracy and ±20 ppm/°C temperature coefficient
- Internal reference buffer
- Low power consumption with nap and sleep power-down modes
Applications
The LTC2389-16 is ideally suited for a wide variety of high-speed applications, including:
- High-speed imaging and instrumentation
- High-speed control loop applications
- Communications applications requiring wide dynamic range and significant signal bandwidth
- Industrial automation and process control
- Medical devices and diagnostic equipment
Q & A
- What is the resolution of the LTC2389-16 ADC?
The LTC2389-16 has a resolution of 16 bits.
- What are the supported analog input ranges for the LTC2389-16?
The LTC2389-16 supports pin-configurable 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 LTC2389-16?
The LTC2389-16 has a sampling rate of 2.5 Msps.
- What is the signal-to-noise ratio (SNR) of the LTC2389-16?
The SNR of the LTC2389-16 is 96.0 dB (fully differential) and 93.5 dB (pseudo differential).
- Does the LTC2389-16 have an internal reference voltage?
Yes, the LTC2389-16 includes a precision internal 4.096V reference.
- What is the power consumption of the LTC2389-16 at 2.5 Msps?
The power consumption of the LTC2389-16 at 2.5 Msps is 162.5 mW.
- Does the LTC2389-16 have power-down modes?
Yes, the LTC2389-16 has nap and sleep power-down modes to reduce power consumption during inactive periods.
- What package types are available for the LTC2389-16?
The LTC2389-16 is available in 48-Lead LQFP (7mm x 7mm) and 48-Lead QFN (7mm x 7mm x 0.75mm w/ EP) packages.
- What are some typical applications for the LTC2389-16?
The LTC2389-16 is typically used in high-speed imaging, instrumentation, control loop applications, communications, industrial automation, and medical devices.
- Does the LTC2389-16 have an internal oscillator for setting conversion time?
Yes, the LTC2389-16 has an internal oscillator that sets the conversion time, easing external timing considerations.
