Overview
The LTC2372-18, produced by Analog Devices Inc., is a high-performance, low noise, 18-bit successive approximation register (SAR) analog-to-digital converter (ADC). This 8-channel ADC operates from a single 5V supply and is designed for high-speed and low crosstalk applications. It supports fully differential, pseudo-differential unipolar, and pseudo-differential bipolar analog input ranges, making it versatile for various signal processing needs.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Bits | 18 |
| Sampling Rate | 500 ksamples/s |
| Number of Inputs | 8 |
| Input Type | Differential, Pseudo-Differential Unipolar, Pseudo-Differential Bipolar |
| Supply Voltage | 5V |
| Signal-to-Noise Ratio (SNR) | 100 dB (fully differential), 95 dB (pseudo-differential) |
| Integral Nonlinearity (INL) | ±2.75 LSB (maximum) |
| Reference Voltage | 2.048V (onboard, temperature-compensated) |
| Power Consumption | 27 mW (active), 300 μW (sleep mode) |
| Package | 32-WFQFN Exposed Pad |
Key Features
- Highly configurable, low crosstalk 8-channel input multiplexer.
- Low noise and high speed operation.
- Onboard low drift (20 ppm/°C max) 2.048V temperature-compensated reference and a single-shot capable reference buffer.
- High speed SPI-compatible serial interface supporting 1.8V, 2.5V, 3.3V, and 5V logic.
- Internal oscillator for setting conversion time, reducing external timing considerations.
- Low power consumption with automatic nap mode between conversions and a sleep mode for further power savings.
Applications
The LTC2372-18 is suitable for a variety of applications requiring high precision and low noise, such as industrial control systems, medical devices, test and measurement equipment, and automotive systems. Its high speed and low crosstalk make it ideal for applications where multiple channels need to be sampled simultaneously.
Q & A
- What is the resolution of the LTC2372-18 ADC?
The LTC2372-18 has a resolution of 18 bits. - How many input channels does the LTC2372-18 support?
The LTC2372-18 supports 8 input channels. - What are the supported input types for the LTC2372-18?
The LTC2372-18 supports fully differential, pseudo-differential unipolar, and pseudo-differential bipolar analog input ranges. - What is the typical signal-to-noise ratio (SNR) of the LTC2372-18?
The typical SNR is 100 dB for fully differential inputs and 95 dB for pseudo-differential inputs. - What is the maximum integral nonlinearity (INL) of the LTC2372-18?
The maximum INL is ±2.75 LSB. - Does the LTC2372-18 have an onboard reference voltage?
Yes, the LTC2372-18 has an onboard 2.048V temperature-compensated reference voltage. - What is the power consumption of the LTC2372-18 in active and sleep modes?
The power consumption is 27 mW in active mode and 300 μW in sleep mode. - What package type is the LTC2372-18 available in?
The LTC2372-18 is available in a 32-WFQFN Exposed Pad package. - Does the LTC2372-18 support SPI-compatible serial interface?
Yes, the LTC2372-18 supports a high speed SPI-compatible serial interface. - What are some typical applications for the LTC2372-18?
The LTC2372-18 is suitable for industrial control systems, medical devices, test and measurement equipment, and automotive systems.
