Overview
The LTC2497CUHF#PBF is a 16-bit, 8-/16-channel ΔΣ (Delta-Sigma) Analog-to-Digital Converter (ADC) produced by Analog Devices Inc. This device features Easy Drive technology and a 2-wire I2C interface. It is designed to eliminate dynamic input current errors and the shortcomings of on-chip buffering through automatic cancellation of differential input current. This allows for the direct digitization of large external source impedances and rail-to-rail input signals while maintaining exceptional DC accuracy.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 16 bits |
| Number of Channels | 16 (8 differential) |
| Input Mode | Single-ended or differential |
| Interface | 2-wire I2C |
| Common Mode Input Range | 0V to VCC |
| Package | 38-Lead QFN (5mm x 7mm w/ EP) |
| Operating Temperature | -40°C to 85°C (commercial grade), -40°C to 125°C (industrial grade) |
Key Features
- Easy Drive technology for automatic cancellation of differential input current, allowing large external source impedances and rail-to-rail input signals to be directly digitized.
- Integrated oscillator for internal clock generation.
- Automatic rejection of line frequencies of 50Hz and 60Hz.
- No latency ΔΣ ADC architecture.
- Access to the multiplexer output enables optional external amplifiers to be shared between all analog inputs.
- Auto calibration continuously removes offset and drift associated with external amplifiers.
Applications
The LTC2497 is suitable for a variety of applications that require high precision and flexibility in analog-to-digital conversion. These include industrial automation, medical devices, test and measurement equipment, and any system requiring accurate and reliable analog input digitization.
Q & A
- What is the resolution of the LTC2497 ADC?
The LTC2497 has a resolution of 16 bits. - How many channels does the LTC2497 support?
The LTC2497 supports 16 channels, with 8 of them being differential channels. - What type of interface does the LTC2497 use?
The LTC2497 uses a 2-wire I2C interface. - What is the common mode input range of the LTC2497?
The common mode input range is from 0V to VCC. - What package options are available for the LTC2497?
The LTC2497 is available in a 38-Lead QFN (5mm x 7mm w/ EP) package. - Does the LTC2497 have built-in noise rejection?
Yes, the LTC2497 automatically rejects line frequencies of 50Hz and 60Hz. - Can the LTC2497 be used with external amplifiers?
Yes, the LTC2497 allows access to the multiplexer output, enabling the use of optional external amplifiers shared between all analog inputs. - How does the LTC2497 handle offset and drift of external amplifiers?
The LTC2497 features auto calibration that continuously removes the offset and drift associated with external amplifiers. - What are some typical applications for the LTC2497?
The LTC2497 is used in industrial automation, medical devices, test and measurement equipment, and other systems requiring accurate analog input digitization. - What is the operating temperature range for the LTC2497?
The operating temperature range is -40°C to 85°C for commercial grade and -40°C to 125°C for industrial grade.
