Overview
The LTC2372-18#PBF, produced by Analog Devices Inc., is a high-performance, 18-bit successive approximation register (SAR) analog-to-digital converter (ADC). This component is designed for low noise and high speed applications, operating from a single 5V supply. It features an 8-channel input multiplexer with support for fully differential, pseudo-differential unipolar, and pseudo-differential bipolar analog input ranges. The ADC is known for its high signal-to-noise ratio (SNR) and low integral nonlinearity (INL), making it suitable for a variety of precision measurement applications.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 18 bits |
| Sample Rate | 500 ksps |
| Number of Channels | 8 |
| Input Range | Fully differential, pseudo-differential unipolar, pseudo-differential bipolar |
| SNR (Typical) | 100 dB (fully differential), 95 dB (pseudo-differential) |
| INL (Maximum) | ±2.75 LSB |
| Reference Voltage | 2.048 V (onboard, temperature-compensated) |
| Supply Voltage | 5 V |
| Power Consumption | 27 mW (active), 300 μW (sleep mode) |
| Package | 32-Lead QFN (5mm x 5mm x 0.75mm) |
| Interface | SPI-compatible serial interface (1.8V, 2.5V, 3.3V, 5V logic) |
Key Features
- Highly configurable 8-channel input multiplexer with low crosstalk.
- Onboard low drift (20 ppm/°C max) 2.048 V temperature-compensated reference and single-shot capable reference buffer.
- High speed SPI-compatible serial interface supporting various logic levels.
- 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.
- No missing codes at 18 bits.
Applications
The LTC2372-18#PBF is suitable for a wide range of applications requiring high precision and low noise, including:
- Precision measurement systems.
- Industrial control and automation.
- Medical devices and diagnostic equipment.
- Aerospace and defense systems.
- High-performance data acquisition systems.
Q & A
- What is the resolution of the LTC2372-18#PBF ADC?
The LTC2372-18#PBF has a resolution of 18 bits. - What is the maximum sample rate of the LTC2372-18#PBF?
The maximum sample rate is 500 ksps. - How many input channels does the LTC2372-18#PBF have?
The LTC2372-18#PBF has 8 input channels. - What are the supported input ranges for the LTC2372-18#PBF?
The supported input ranges include fully differential, pseudo-differential unipolar, and pseudo-differential bipolar. - What is the typical SNR of the LTC2372-18#PBF?
The typical SNR is 100 dB for fully differential inputs and 95 dB for pseudo-differential inputs. - What is the maximum INL of the LTC2372-18#PBF?
The maximum INL is ±2.75 LSB. - Does the LTC2372-18#PBF have an onboard reference voltage?
Yes, it has an onboard 2.048 V temperature-compensated reference voltage. - What is the power consumption of the LTC2372-18#PBF in active and sleep modes?
The power consumption is 27 mW in active mode and 300 μW in sleep mode. - What type of package does the LTC2372-18#PBF come in?
The LTC2372-18#PBF comes in a 32-Lead QFN package (5mm x 5mm x 0.75mm). - What interface does the LTC2372-18#PBF use for communication?
The LTC2372-18#PBF uses a SPI-compatible serial interface supporting 1.8V, 2.5V, 3.3V, and 5V logic levels.
