Overview
The LTC2338-18, produced by Analog Devices Inc., is a high-performance, 18-bit successive approximation register (SAR) analog-to-digital converter (ADC). This device is designed for high-speed and low-noise applications, operating from a single 5V supply. It features fully differential inputs with a ±10.24V true bipolar input range, making it ideal for applications requiring a wide dynamic range. The LTC2338-18 is known for its high signal-to-noise ratio (SNR) of 100dB and its low power consumption, dissipating only 50mW during operation and 300μW in sleep mode.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 18 bits |
| Sample Rate | 1 Msps |
| Input Range | ±10.24V true bipolar, fully differential |
| Signal-to-Noise Ratio (SNR) | 100 dB |
| Integral Nonlinearity (INL) | ±4 LSB max |
| No Missing Codes | At 18 bits |
| Supply Voltage | 5V single supply |
| Power Consumption | 50 mW (active), 300 μW (sleep mode) |
| Interface | High speed SPI-compatible serial interface (1.8V, 2.5V, 3.3V, 5V logic) |
| Package | 16-Lead MSOP |
| Temperature Range | -40°C to 85°C |
Key Features
- Low noise and high speed operation with 1 Msps throughput and no cycle latency.
- On-board single-shot capable reference buffer and low drift (20 ppm/°C max) 2.048V temperature compensated reference.
- High speed SPI-compatible serial interface supporting 1.8V, 2.5V, 3.3V, and 5V logic with daisy-chain mode.
- 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 LTC2338-18 is suited for a variety of high-speed applications that require high accuracy and low noise. These include industrial automation, medical devices, test and measurement equipment, and any system needing high dynamic range and precision analog-to-digital conversion.
Q & A
- What is the resolution of the LTC2338-18 ADC?
The LTC2338-18 has an 18-bit resolution. - What is the sample rate of the LTC2338-18?
The sample rate is 1 Msps (mega-samples per second). - What is the input range of the LTC2338-18?
The input range is ±10.24V true bipolar, fully differential. - What is the signal-to-noise ratio (SNR) of the LTC2338-18?
The SNR is 100 dB. - What is the power consumption of the LTC2338-18?
The power consumption is 50 mW during active operation and 300 μW in sleep mode. - What type of interface does the LTC2338-18 use?
The LTC2338-18 uses a high speed SPI-compatible serial interface supporting 1.8V, 2.5V, 3.3V, and 5V logic. - What is the package type of the LTC2338-18?
The package type is 16-Lead MSOP. - What is the temperature range of the LTC2338-18?
The temperature range is -40°C to 85°C. - Does the LTC2338-18 have any on-board reference features?
Yes, it has an on-board single-shot capable reference buffer and a low drift (20 ppm/°C max) 2.048V temperature compensated reference. - How does the LTC2338-18 manage power consumption during inactive periods?
The LTC2338-18 automatically naps between conversions and has a sleep mode to reduce power consumption to 300 μW.
