LTC2488
PRODUCTION16-Bit 2-/4-Channel ΔΣ ADC with Easy Drive Input Current Cancellation
- Part Models
- 4
- 1ku List Price
- Starting From $2.60
Part Details
- Up to 2 Differential or 4 Single-Ended Inputs
- Easy Drive Technology Enables Rail-to-Rail Inputs with Zero Differential Input Current
- Directly Digitizes High Impedance Sensors with Full Accuracy
- 600nVRMS Noise (0.02LSB Transition Noise)
- GND to VCC Input/Reference Common Mode Range
- Simultaneous 50Hz/60Hz Rejection
- 2ppm INL, No Missing Codes
- 1ppm Offset and 15ppm Full-Scale Error
- No Latency: Digital Filter Settles in a Single Cycle, Even After a New Channel is Selected
- Single Supply 2.7V to 5.5V Operation (0.8mW)
- Internal Oscillator
- Tiny 4mm × 3mm DFN Package
The LTC2488 is a 4-channel (2-channel differential), 16-bit, No Latency ΔΣ™ ADC with Easy Drive™ technology. The patented sampling scheme eliminates dynamic input current errors and the shortcomings of on-chip buffering through automatic cancellation of differential input current. This allows large external source impedances and rail-to-rail input signals to be directly digitized while maintaining exceptional DC accuracy.
The LTC2488 includes an integrated oscillator. This device can be configured to measure an external signal from combinations of 4 analog input channels operating in single ended or differential modes. It automatically rejects line frequencies of 50Hz and 60Hz simultaneously.
The LTC2488 allows a wide common mode, input range (0V to VCC), independent of the reference voltage. Any combination of single-ended or differential inputs can be selected and the first conversion after a new channel selection is valid.
Applications
- Direct Sensor Digitizer
- Direct Temperature Measurement
- Instrumentation
- Industrial Process Control
Documentation
Data Sheet 1
Reliability Data 1
User Guide 1
Design Note 2
Technical Articles 1
Product Selector Card 2
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| LTC2488CDE#PBF | 14-Lead DFN (4mm x 3mm w/ EP) | ||
| LTC2488CDE#TRPBF | 14-Lead DFN (4mm x 3mm w/ EP) | ||
| LTC2488IDE#PBF | 14-Lead DFN (4mm x 3mm w/ EP) | ||
| LTC2488IDE#TRPBF | 14-Lead DFN (4mm x 3mm w/ EP) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Feb 20, 2022 - 21_0269 Addition of Alternate Assembly Site ASE Taiwan for Select LFCSP Products |
||
| LTC2488CDE#PBF | PRODUCTION | |
| LTC2488CDE#TRPBF | PRODUCTION | |
| LTC2488IDE#PBF | PRODUCTION | |
| LTC2488IDE#TRPBF | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Hardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Analog Temperature Sensors 1 | ||
| LTC2995 | PRODUCTION | Temperature Sensor and Dual Voltage Monitor with Alert Outputs |
| Precision Resistor Network 1 | ||
| LT5400 | RECOMMENDED FOR NEW DESIGNS | Quad Matched Resistor Network |
| Series Voltage References 1 | ||
| LT6660 | PRODUCTION | Tiny Micropower Precision Series References in 2mm × 2mm DFN |
| TimerBlox 1 | ||
| LTC6991 | PRODUCTION | TimerBlox: Resettable, Low Frequency Oscillator |
Evaluation Kits
LTC2488 16-bit 2-channel ADC, requires DC590