Overview
The LTC2351-14, produced by Analog Devices Inc., is a high-performance, 14-bit analog-to-digital converter (ADC) designed for simultaneous sampling of six differential inputs. This device is notable for its low power consumption and compact package, making it ideal for portable and space-constrained applications. It operates from a single 3V supply, drawing only 5.5mA, and features a sleep shutdown mode that reduces power consumption to 12µW. The LTC2351-14 is housed in a 32-lead QFN package with dimensions of 5mm x 5mm x 0.75mm, enhancing its suitability for a wide range of applications requiring precision and efficiency.
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) |
| Power Supply | Single 3V supply |
| Power 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 with a sleep shutdown mode to reduce power to 12µW.
- Compact 32-lead QFN package suitable for portable and space-constrained applications.
- 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, depending on the BIP pin state.
- Ability to abbreviate the conversion sequence to convert fewer than six channels using SEL2, SEL1, and SEL0 inputs.
- Serial interface compatible with standard serial interfaces, sending out six conversion results in 96 clocks.
Applications
The LTC2351-14 is versatile and can be used in a variety of applications, including:
- Portable and battery-powered devices due to its low power consumption.
- Industrial control systems requiring simultaneous sampling of multiple channels.
- Medical devices where high precision and low noise are critical.
- Aerospace and defense applications where compact size and reliability are essential.
- Automotive systems needing robust and efficient ADCs.
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 sampling rate is 1.5 Msps, with each channel sampled at 250 ksps. - What is the power consumption of the LTC2351-14 in active and shutdown modes?
In active mode, the power consumption is 5.5mA, and in shutdown mode, it is 12µW. - What is the package type and dimensions of the LTC2351-14?
The LTC2351-14 is packaged in a 32-lead QFN with dimensions of 5mm x 5mm x 0.75mm. - What is the common mode rejection ratio of the LTC2351-14?
The common mode rejection ratio is 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, depending on the state of the BIP pin. - How does the LTC2351-14 handle conversion sequences?
The conversion sequence can be abbreviated to convert fewer than six channels using the SEL2, SEL1, and SEL0 inputs. - What is the serial interface compatibility of the LTC2351-14?
The serial interface sends out the six conversion results in 96 clocks, compatible with standard serial interfaces. - What are some typical applications of the LTC2351-14?
Typical applications include portable devices, industrial control systems, medical devices, aerospace and defense, and automotive systems.
