Overview
The LTC2351-14, produced by Analog Devices Inc., is a high-performance, 14-bit, 1.5Msps (mega-samples per second) simultaneous sampling analog-to-digital converter (ADC). This device features six differential inputs that are sampled simultaneously on the rising edge of the CONV signal, making it ideal for applications requiring precise and simultaneous data acquisition. The LTC2351-14 is housed in a compact 32-lead QFN package (5mm x 5mm x 0.75mm) and operates from a single 3V supply, drawing only 5.5mA of current. It also includes a sleep shutdown mode that reduces power consumption to 12µW, enhancing its suitability for portable and power-sensitive applications.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 14 bits |
| Sampling Rate | 1.5 Msps (250 ksps per channel) |
| Number of Channels | 6 differential inputs |
| Input Range | 0V to 2.5V unipolar, ±1.25V bipolar (differential) |
| Supply Voltage | 3V |
| Current Consumption | 5.5mA (active), 12µW (shutdown) |
| Package | 32-Lead QFN (5mm x 5mm x 0.75mm) |
| Common Mode Rejection | 83dB |
Key Features
- Simultaneous sampling of six differential inputs on the rising edge of the CONV signal.
- Low power consumption: 5.5mA active, 12µW in shutdown mode.
- Compact 32-lead QFN package (5mm x 5mm x 0.75mm).
- High common mode rejection of 83dB to eliminate ground loops and common mode noise.
- Flexible input range: 0V to 2.5V unipolar or ±1.25V bipolar (differential).
- Serial interface compatible with standard serial interfaces, sending out six conversion results in 96 clocks.
Applications
The LTC2351-14 is suitable for a variety of applications, including:
- Portable and battery-powered devices due to its low power consumption.
- Industrial and medical devices requiring simultaneous and precise data acquisition.
- Automotive systems where high accuracy and low noise are critical.
- Data acquisition systems in scientific and research environments.
Q & A
- What is the resolution of the LTC2351-14 ADC?
The LTC2351-14 has a resolution of 14 bits. - How many channels does the LTC2351-14 support?
The LTC2351-14 supports six differential input channels. - What is the sampling rate of the LTC2351-14?
The LTC2351-14 has a sampling rate of 1.5 Msps, with each channel sampled at 250 ksps. - What is the power consumption of the LTC2351-14 in active and shutdown modes?
The LTC2351-14 consumes 5.5mA in active mode and 12µW in shutdown mode. - What is the package type and size of the LTC2351-14?
The LTC2351-14 is housed in a 32-lead QFN package measuring 5mm x 5mm x 0.75mm. - What is the common mode rejection ratio of the LTC2351-14?
The LTC2351-14 has a common mode rejection ratio of 83dB. - Can the input range of the LTC2351-14 be configured?
Yes, the input range can be configured as 0V to 2.5V unipolar or ±1.25V bipolar (differential) based on the state of the BIP pin. - How does the serial interface of the LTC2351-14 work?
The serial interface sends out the six conversion results in 96 clocks, compatible with standard serial interfaces. - Can the conversion sequence be abbreviated to convert fewer than six channels?
Yes, the conversion sequence can be abbreviated based on the logic state of the SEL2, SEL1, and SEL0 inputs. - What are some typical applications of the LTC2351-14?
The LTC2351-14 is suitable for portable devices, industrial and medical devices, automotive systems, and data acquisition systems in scientific and research environments.
